diff --git a/.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.i18n.yaml b/.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.i18n.yaml new file mode 100644 index 0000000000..047cccbce3 --- /dev/null +++ b/.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.i18n.yaml @@ -0,0 +1,6 @@ +# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each +# side as of the last confirmed-consistent state. Both languages carry equal authority; +# after editing either side, bring the other along and re-record with: +# pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.md +2026-07-29-projected-token-usage-and-request-context.md: 1e2c5ff067928620dee3d0937c247bec245e34f2 +2026-07-29-projected-token-usage-and-request-context.zh.md: 811d92e134b1df0fc6725e6c8d38b37efb57b3aa diff --git a/.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.md b/.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.md new file mode 100644 index 0000000000..1e2c5ff067 --- /dev/null +++ b/.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.md @@ -0,0 +1,59 @@ +# Agent Note: Projected token usage and context occupancy + +Status: implemented + +English | [中文](2026-07-29-projected-token-usage-and-request-context.zh.md) + +## Problem + +The Web stats line derived token totals from the currently loaded conversation nodes. That window is paged, so scrolling changed the totals, and compaction replaces visible content without preserving the billing behind it. Durable provider billing needs a source that survives both. + +Context occupancy needs a numerator and a denominator that no existing surface carried to the browser: the prompt size of the latest request, and the capacity of the route it used. + +## Decision + +Both values are ordinary durable session-projection state. `@deepseek-ai/dsh-token-meter` registers two units when `ctx.sessionProjections` is present. + +`tokenUsage` folds the complete durable log into uncached input, output, cache-read, and cache-write buckets. An `assistant/chunk` usage sample survives a later failed request; an `assistant/message` usage value for the same `(turn, step)` replaces the earlier sample instead of double-counting it. Reasoning stays an output subdivision. Compaction and surface replacement do not erase earlier billing. + +`contextPressure` carries optional `pressureTokens` — the newest provider-reported prompt size, summing uncached input plus cache reads and writes, excluding output — and optional `contextWindow` from the newest `request/context` record. Neither field is synthesized before its source exists. + +`request/context` is a new log-only session event recording registration-bound metadata for the route a request resolved to. AgentLoop appends it inside the step beside `request/header`, from the context metadata `prepareCall()` now returns alongside the resolved config — the same registration-bound lookup that already validated reasoning, so no second resolve happens. It is skipped when provider, model, and capacity all match the previous record. A route whose adapter advertises no capacity is recorded with `contextWindow` absent, clearing an older route's denominator. + +Capacity deliberately stays out of `EpochHeader`. That type is the reconstruction contract — what a request was built from — and `headerEquals` compares it field-wise to decide whether a snapshot is a real `change`. Capacity is adapter metadata describing a route, so placing it there would let a capacity change masquerade as a request-envelope change and would drag it into the loop's reconstruction invariant. + +Both units ride the standard projection lifecycle: history tail baselines, `session/projection` live frames, higher-seq-wins client storage, JSON checkpoints, cache recovery, and unit unload. There is no token-specific history field, mux frame, projector, revision counter, or client fence. + +The Web `StatsLine` reads both through the standard `useProjection` seat. Window nodes still supply turn and step counts plus LLM and tool wall times — those answer "what is on screen" and are correctly window-scoped. Durable token and context groups remain when compaction leaves no visible assistant step. Cache writes count in billed input and in the cache-hit denominator. A deployment without token-meter drops the token groups; occupancy stays hidden until both pressure and capacity are known. + +## Context occupancy is approximate, and that is the decision + +`pressureTokens` and `contextWindow` are independent last-wins fields, not one atomic observation. Switching models pairs a fresh capacity with the previous route's pressure until the next request reports usage, and the numerator describes the last request rather than the surface as it currently stands. + +This was accepted deliberately. An occupancy percentage is a user-facing reference figure: nothing in the harness makes decisions from it, and compaction reads `measure()` directly instead. The TUI status line has always computed occupancy this way, dividing a `measure()` total by a capacity resolved separately for the selected model — so an atomic variant here would have been the outlier, not the norm. + +Reviewers should not treat the non-atomicity as a defect awaiting a fix. A consumer that genuinely needs an exact same-boundary figure should call `ctx.tokenMeter.measure()` at its own request boundary, where both values are available together, rather than read this projection. + +## Alternatives considered + +**An atomic request-boundary snapshot delivered as a transient mux frame (implemented, then rejected).** An earlier revision of this branch emitted `session/model-request`: one non-replayable frame carrying `contextTokens` and `contextWindow` measured at the same `agent/model-request` boundary. Being the only non-replayable class on the mux stream is what broke it. Host and mux are independent SSE streams with no cross-stream ordering, so a request emitted before a removal could arrive after `host/session-removed` and revive a dead session's telemetry, while a legitimate request for a new lifecycle reusing the same id could be fenced by a late removal. `session/subscribed` is not lifecycle proof — it says a queue began subscribing to an id, not that a new in-memory session replaced an older one — and `lastSeq` is a durable watermark two lifecycles can share. A correct fix required a monotonic lifecycle generation on the frame, on subscription, and on removal, plus a client watermark comparison. + +That cost bought a worse display: occupancy went blank after every reconnect and never moved while a conversation grew. It also made ApiProxy a measurement site calling the O(surface) `measure()` on every request, and expressed reconnect state through a synthetic `cancelled` open error the UI had to special-case. + +**Fold the loaded node window in React.** Cannot survive pagination or compaction, and makes a presentation package reconstruct log semantics. + +**Publish usage only with final assistant messages.** A request that reports a usage chunk and then fails would lose its billing. + +**Resolve capacity inside token-meter.** The package documents itself as independent of model routing and is otherwise a pure reader that never appends to the log. AgentLoop already holds the resolved metadata where the header is written. + +**Extend the `session.models` RPC with capacity.** The handler already resolves and discards it, so the field is nearly free — but `StatsLine` lives in `ui-conversation` while the model directory lives in `ui-model`, and `ui-conversation` cannot depend on `ui-model`. Delivering it would have required either a second dock entry splitting one text row across two plugins, or a cross-plugin store write. + +**Add a context circle beside the model selector.** That placement suggests selected-model state. The stats line carries the figure without a duplicate UI or data path. + +## Consequences + +Token totals stay stable across pagination, compaction, replay, restart, and reconnect, because they are ordinary durable projection state recovered through the generic paths. The cross-stream reordering race is gone by construction rather than fenced. + +Occupancy is approximate in the ways documented above. It is available immediately after restore or reconnect, since both fields are durable, at the cost of describing the last recorded request rather than an exact current boundary. + +Each session log gains one small `request/context` record per route or advertised-capacity change. The token-meter projection is the canonical owner of durable session-projection usage semantics; the TUI retains its live per-step map because it does not mount the generic projection seam, and the standalone browser fixture mirrors the unit. ApiProxy carries no token-specific code, owns no per-session metrics cache, and performs no measurement. The browser keeps two generic projection values and no connection-local telemetry, and streaming text deltas still do not force the stats line to recompute. diff --git a/.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.zh.md b/.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.zh.md new file mode 100644 index 0000000000..811d92e134 --- /dev/null +++ b/.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.zh.md @@ -0,0 +1,59 @@ +# Agent Note: token 用量投影与上下文占用率 + +Status: implemented + +[English](2026-07-29-projected-token-usage-and-request-context.md) | 中文 + +## 问题 + +Web 统计行原先从当前已加载的会话节点推导 token 总量。该窗口是分页的，因此滚动会改变总量；压缩（compaction）又会替换可见内容，而不保留其背后的计费用量。持久的提供方计费用量需要一个能同时经受这两者的数据源。 + +上下文占用率需要一个分子和一个分母，而这两者都不曾由任何既有接口送达浏览器：最新一个请求的提示词规模，以及该请求所用路由的容量。 + +## 决策 + +这两个值都是普通的持久会话投影状态。当 `ctx.sessionProjections` 存在时，`@deepseek-ai/dsh-token-meter` 会注册两个单元。 + +`tokenUsage` 将完整持久日志归并为未缓存输入、输出、缓存读取和缓存写入四类计数项。即使后续请求失败，`assistant/chunk` 用量样本仍会保留；同一 `(turn, step)` 的 `assistant/message` 用量值会替换先前样本，不会重复计数。推理（reasoning）仍是输出的细分项。压缩和表层替换不会抹除先前的计费用量。 + +`contextPressure` 携带可选的 `pressureTokens`（提供方报告的最新提示词规模，为未缓存输入加缓存读取与写入之和，不含输出），以及来自最新一条 `request/context` 记录的可选 `contextWindow`。在各自来源出现前，两个字段都不会被合成。 + +`request/context` 是新增的仅入日志会话事件，记录请求所解析到的路由的、绑定注册项的元数据。AgentLoop 在步骤内紧随 `request/header` 追加它，数据取自 `prepareCall()` 现在与已解析配置一并返回的上下文元数据：正是那次已经校验过推理的、绑定注册项的查询，因此不会发生第二次解析。当提供方、模型和容量都与上一条记录相同时会跳过。适配器不公布容量的路由会以缺失 `contextWindow` 的形式记录，从而清除较早路由的分母。 + +容量刻意不进入 `EpochHeader`。该类型是重建契约，即请求由什么构建而成，而 `headerEquals` 会逐字段比较它，以判定某个快照是否真的是一次 `change`。容量是描述路由的适配器元数据，把它放进去会让容量变化伪装成请求封装的变化，还会把它拖进 AgentLoop 的重建不变式。 + +两个单元都沿用标准投影生命周期：历史尾页基线、`session/projection` 实时帧、seq 高者胜的客户端存储、JSON 检查点、缓存恢复和单元卸载。系统没有任何 token 专用的历史字段、mux 帧、投影器、修订计数器或客户端栅栏。 + +Web `StatsLine` 通过标准 `useProjection` 席位读取两者。窗口内节点仍提供轮次和步骤计数，以及 LLM（大语言模型）与工具的墙钟时间：它们回答的是「屏幕上有什么」，按窗口作用域正是正确的。压缩使可见 assistant 步骤归零后，持久 token 与上下文分组仍会保留。缓存写入会计入计费输入和缓存命中率分母。未部署 token-meter 时会去掉 token 分组；只有压力与容量都已知时才显示占用率。 + +## 上下文占用率是近似值，而这正是决策本身 + +`pressureTokens` 与 `contextWindow` 是两个各自后者胜的独立字段，不是一次原子观测。切换模型时，新容量会与上一路由的压力配对，直到下一个请求报告用量为止；分子描述的是最后一个请求，而不是此刻的表层。 + +这是刻意接受的结果。占用率百分比是面向用户的参考数字：harness 中没有任何环节依据它做决策，压缩改为直接读取 `measure()`。TUI 状态行一直以这种方式计算占用率，即用 `measure()` 总量除以为所选模型单独解析出的容量；因此在这里做成原子版本才是异类，而不是常态。 + +评审人不应把这种非原子性当作待修的缺陷。确实需要同一边界精确数字的消费方，应在自己的请求边界调用 `ctx.tokenMeter.measure()`，那里两个值同时可得，而不是读取该投影。 + +## 备选方案 + +**以临时 mux 帧交付请求边界上的原子快照（已实现，随后否决）。** 本分支较早的一个修订版会发出 `session/model-request`：一个不可回放的帧，携带在同一个 `agent/model-request` 边界测得的 `contextTokens` 与 `contextWindow`。真正让它失效的，是它成了 mux 流上唯一的不可回放类别。Host 流与 mux 流是两条独立的 SSE（Server-Sent Events）流，彼此之间没有顺序保证：在移除之前发出的请求可能在 `host/session-removed` 之后才到达，让一个已死会话的遥测数据复活；而复用同一 id 的新生命周期的合法请求，又可能被一条迟到的移除拦下。`session/subscribed` 不能证明生命周期：它只说明某个队列开始订阅某个 id，而不说明新的内存会话替换了较早的会话；`lastSeq` 则是两个生命周期可以共用的持久水位线。正确的修法需要在帧上、订阅上和移除上都带一个单调递增的生命周期代次，再加上一次客户端水位线比较。 + +这份代价换来的是更差的显示：占用率在每次重连后变为空白，而且会话增长期间从不移动。它还把 ApiProxy 变成一个测量点，每个请求都要调用 O(surface) 的 `measure()`，并通过一个 UI 必须特殊处理的、连接打开时的合成 `cancelled` 错误来表达重连状态。 + +**在 React 中归并已加载的节点窗口。** 无法跨分页或压缩保留数据，还会迫使展示包（package）重建日志语义。 + +**仅随最终 assistant 消息发布用量。** 如果请求报告一个用量分片后失败，就会丢失自己的计费用量。 + +**在 token-meter 内部解析容量。** 该包自述与模型路由无关，且在其他方面是一个从不向日志追加内容的纯读取方。AgentLoop 在写入请求头的位置已经持有已解析的元数据。 + +**为 `session.models` RPC 增加容量字段。** 其处理器已经解析出容量又将其丢弃，因此这个字段几乎是免费的；但 `StatsLine` 位于 `ui-conversation`，模型目录位于 `ui-model`，而 `ui-conversation` 不能依赖 `ui-model`。要送达它，就得增加第二个 dock 条目、把一行文本拆到两个插件里，或者做一次跨插件的 store 写入。 + +**在模型选择器旁增加上下文圆环。** 该位置会让人以为这是所选模型的状态。统计行可以承载该数字，无需引入重复的 UI 或数据路径。 + +## 后果 + +token 总量在分页、压缩、回放、重启和重连期间保持稳定，因为它们是通过通用路径恢复的普通持久投影状态。跨流重排序竞态从构造上就不存在，而不是被栅栏挡住。 + +占用率在上文记录的意义上是近似值。由于两个字段都是持久的，它在恢复或重连后立即可用；代价是它描述的是最后一条已记录的请求，而不是精确的当前边界。 + +每个会话日志会为每次路由或已公布容量变化增加一条小型 `request/context` 记录。token-meter 投影是持久会话投影用量语义的正典所有方；TUI 未挂载通用投影 seam，因此保留自己的实时逐步骤 map，而独立浏览器 fixture 会镜像该单元。ApiProxy 不携带任何 token 专用代码，不拥有逐会话指标缓存，也不执行测量。浏览器只保留两个通用投影值，不保留连接本地的遥测数据；流式文本增量仍不会迫使统计行重新计算。 diff --git a/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.i18n.yaml b/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.i18n.yaml index a56a91c980..bca3fb39ad 100644 --- a/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.i18n.yaml +++ b/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.i18n.yaml @@ -2,5 +2,5 @@ # side as of the last confirmed-consistent state. Both languages carry equal authority; # after editing either side, bring the other along and re-record with: # pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.md -2026-07-30-client-locale-full-rollout.md: c080d9f240d4533ecd9694ceecfada8662c46425 -2026-07-30-client-locale-full-rollout.zh.md: 062d982e3d7ea62f3ca4c8fedb842e8336f0852c +2026-07-30-client-locale-full-rollout.md: a357f20734d1aa8df60efbf28fd5b8a1a814d63e +2026-07-30-client-locale-full-rollout.zh.md: d22b743f0597405e7f42374ec2caed5523e85595 diff --git a/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.md b/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.md index c080d9f240..a357f20734 100644 --- a/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.md +++ b/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.md @@ -25,7 +25,7 @@ After the typed locale standard seat landed (`locale:` on register → framework **Derivation layers stay pure; localization happens at render.** ui-workspace's `relativeTime` returns structured `{unit, n}` composed with dictionary templates by the renderer; blank sessions and the Ungrouped bucket keep their stored titles, with the renderer substituting localized copy off the `blank` flag / absent `workspaceId`; **blank rows are excluded from search entirely** (a bilingual display title cannot match a single-language query stably). Dates use no Intl: format templates live in the dictionaries (message clock `clock.md`/`clock.ymd`, workspace hover `date.ymd`) and the formatters take `t` as a parameter, staying pure. -**Test and e2e doctrine**: `makeTranslate(...dicts)` (dsh-client-test-runtime) mirrors the service lookup chain (first-dict-wins, key fallback, `{name}` interpolation); component specs stub the `t` seat with it, typed against real props seats. Web e2e uniformly opens through `newEnglishPage` (pins `dsh.locale=en` before boot) and the built-boot snapshot pins the same — goldens are immune to localization migrations; the settings language-switch scenario deliberately bypasses the helper to cover the zh default. +**Test and e2e doctrine**: `makeTranslate(...dicts)` (dsh-client-test-runtime) mirrors the service lookup chain (first-dict-wins, key fallback, `{name}` interpolation); component specs stub the `t` seat with it, typed against real props seats. Web e2e uniformly opens through `newEnglishPage` (pins `dsh.locale=en` before boot) and the built-boot snapshot pins the same — goldens are immune to localization migrations; the settings language-switch scenario bypasses the helper and opens a `zh-CN` browser, since the initial locale follows `navigator` ([browser-derived initial locale](../feature/2026-07-31-browser-derived-initial-locale.md)). The "apply layer subscribes to `locale/change` and re-registers for fresh labels" mechanism in the [settings/locale/theme layering note](../../proposed/architecture/2026-07-25-client-settings-locale-theme.md) is superseded by this decision (thunk + revision lifecycle). diff --git a/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.zh.md b/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.zh.md index 062d982e3d..d22b743f05 100644 --- a/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.zh.md +++ b/.agents/notes/implemented/architecture/2026-07-30-client-locale-full-rollout.zh.md @@ -25,7 +25,7 @@ typed locale 标准席位（`locale:` 注册声明 → 框架注入强类型 `t` **派生层保持纯函数，本地化只在渲染层**：ui-workspace 的 `relativeTime` 返回结构化 `{unit, n}` 由渲染组合字典模板；blank 会话/未分组桶的存储标题不变，渲染按 `blank` 标志/`workspaceId` 缺席替换本地化文案；**搜索态 blank 行一律排除**（双语标题无法与单语查询稳定匹配）。日期不引 Intl：格式模板进字典（消息时钟 `clock.md`/`clock.ymd`，workspace hover `date.ymd`），格式化函数吃 `t` 参数保持纯。 -**测试与 e2e 口径**：`makeTranslate(...dicts)`（dsh-client-test-runtime）镜像服务查找链（首个命中字典胜出、key 兜底、`{name}` 插值），组件测试的 `t` 桩统一用它并以真实 props 席位定型。web e2e 统一 `newEnglishPage`（boot 前钉 `dsh.locale=en`），built-boot snapshot 同样钉 en——golden 对语言迁移免疫；settings 语言切换用例刻意绕开该 helper 覆盖 zh 默认态。 +**测试与 e2e 口径**：`makeTranslate(...dicts)`（dsh-client-test-runtime）镜像服务查找链（首个命中字典胜出、key 兜底、`{name}` 插值），组件测试的 `t` 桩统一用它并以真实 props 席位定型。web e2e 统一 `newEnglishPage`（boot 前钉 `dsh.locale=en`），built-boot snapshot 同样钉 en——golden 对语言迁移免疫；settings 语言切换用例绕开该 helper 并开启 `zh-CN` 浏览器，因为初始 locale 跟随 `navigator`（[由浏览器推导初始 locale](../feature/2026-07-31-browser-derived-initial-locale.md)）。 [settings/locale/theme 分层 Note](../../proposed/architecture/2026-07-25-client-settings-locale-theme.md) 中"apply 层订阅 `locale/change` 重注册刷新 label"的机制已被本决定取代（thunk + revision 生命周期）。 diff --git a/.agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.i18n.yaml b/.agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.i18n.yaml new file mode 100644 index 0000000000..7d68e52c82 --- /dev/null +++ b/.agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.i18n.yaml @@ -0,0 +1,6 @@ +# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each +# side as of the last confirmed-consistent state. Both languages carry equal authority; +# after editing either side, bring the other along and re-record with: +# pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.md +2026-07-31-english-compaction-checkpoints.md: dc95ed187a6ba5b86800f06ebefb2776995f9421 +2026-07-31-english-compaction-checkpoints.zh.md: 7cd4179430ed775f3807af5a02e81838e495c81e diff --git a/.agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.md b/.agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.md new file mode 100644 index 0000000000..dc95ed187a --- /dev/null +++ b/.agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.md @@ -0,0 +1,28 @@ +# Agent Note: Compaction checkpoints use an English engineering register + +Status: implemented + +English | [中文](2026-07-31-english-compaction-checkpoints.zh.md) + +## Problem + +A compaction checkpoint becomes part of the next model request's durable prefix. When a multilingual conversation leads the compactor to preserve its narrative material in the conversation language, the checkpoint can introduce a large amount of a language that is absent from the code, tool output, and existing reasoning prefix. That language then persists across later compaction cycles and can influence the conversation model's reasoning register. + +## Decision + +`COMPACTION_INSTRUCTION` requires an English-language internal engineering checkpoint. It asks the model to translate narrative source material as needed while preserving exact literals, including paths, commands, errors, identifiers, signatures, and quoted wording when exactness matters. The checkpoint's headings and terse engineering bullets remain the existing structured format. + +The requirement is integrated into the first sentence of the trailing compaction instruction. The replayed system prompt, tools, and conversation history remain byte-identical to the routed request, so the change retains the prefix-cache reuse owned by the [compaction summary prefix-cache note](2026-07-21-compaction-summary-prefix-cache-reuse.md). + +## Alternatives considered + +- **Leave checkpoint language to the replayed conversation** — rejected: the checkpoint is a durable prompt prefix, so preserving a transient conversational register can amplify it across later compactions. +- **Constrain the conversation model's language** — rejected: the policy is for an internal checkpoint, not the user's visible conversation, and a conversation-wide rule would unnecessarily change normal interaction. +- **Require ASCII-only output** — rejected: ASCII is a character-set constraint rather than an engineering-register constraint and would unnecessarily distort legitimate literals and technical material. +- **Append a separate final English-only sentence** — rejected: stating the requirement in the instruction's opening output contract is shorter and ties it directly to the checkpoint being requested. + +## Consequences + +- New checkpoints normalize narrative context into English while retaining the exact strings that future tool use and code work depend on. +- Existing checkpoint structure, compaction routing, and cache alignment are unchanged; only the final user instruction is different. +- The direct summarization call remains outside transcript snapshots because it emits no `assistant/chunk` events. The real-loop regression instead asserts the exact final instruction received by the summarization request. diff --git a/.agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.zh.md b/.agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.zh.md new file mode 100644 index 0000000000..7cd4179430 --- /dev/null +++ b/.agents/notes/implemented/bug-fix/2026-07-31-english-compaction-checkpoints.zh.md @@ -0,0 +1,28 @@ +# Agent Note: 压缩检查点使用英语工程文体 + +Status: implemented + +[English](2026-07-31-english-compaction-checkpoints.md) | 中文 + +## 问题 + +压缩（compaction）检查点会成为下一次模型请求中持久存在的前缀。当多语言对话使压缩器以对话语言保留叙述性材料时，检查点可能引入大量代码、工具输出和既有推理（reasoning）前缀中均未出现的语言内容。该语言随后会在后续压缩周期中持续存在，并影响对话模型的推理文体。 + +## 决策 + +`COMPACTION_INSTRUCTION` 要求生成英语的内部工程检查点。它要求模型在必要时翻译叙述性源材料，同时保留精确的字面量；这包括路径、命令、错误、标识符、签名，以及精确性重要时的引用措辞。检查点的标题及简洁的工程项目符号仍沿用既有的结构化格式。 + +这项要求被整合到尾部压缩指令的第一句话中。回放的系统提示词、工具和对话历史与已路由请求保持字节级一致，因此该变更保留 [compaction summary prefix-cache note](2026-07-21-compaction-summary-prefix-cache-reuse.md) 所确立的前缀缓存复用。 + +## 考虑过的替代方案 + +- **让回放的对话决定检查点语言**——不采纳：检查点是持久的提示词前缀，保留短暂的对话文体可能在后续压缩中放大这种影响。 +- **约束对话模型的语言**——不采纳：该策略针对内部检查点，而不是用户可见的对话；对整个对话施加规则会不必要地改变正常交互。 +- **要求仅输出 ASCII**——不采纳：ASCII 是字符集约束，而非工程文体约束，并会不必要地扭曲合法的字面量和技术材料。 +- **在末尾追加一句独立的仅限英语要求**——不采纳：在指令开头的输出契约中说明该要求更简洁，也直接将其与所请求的检查点绑定。 + +## 后果 + +- 新检查点会将叙述性上下文规范化为英语，同时保留未来工具使用和代码工作所依赖的精确字符串。 +- 既有检查点结构、压缩路由和缓存对齐保持不变；只有最后一条 user 指令不同。 +- 直接摘要调用仍不纳入 transcript（文本记录）快照，因为它不会发出 `assistant/chunk` 事件。真实循环回归改为断言摘要请求收到的精确最终指令。 diff --git a/.agents/notes/implemented/feature/2026-07-06-approval-seam.i18n.yaml b/.agents/notes/implemented/feature/2026-07-06-approval-seam.i18n.yaml index 51ddb7e70f..48d53f1896 100644 --- a/.agents/notes/implemented/feature/2026-07-06-approval-seam.i18n.yaml +++ b/.agents/notes/implemented/feature/2026-07-06-approval-seam.i18n.yaml @@ -2,5 +2,5 @@ # side as of the last confirmed-consistent state. Both languages carry equal authority; # after editing either side, bring the other along and re-record with: # pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-06-approval-seam.md -2026-07-06-approval-seam.md: efb4159d736779af28edc1ae6091de4669c92f31 -2026-07-06-approval-seam.zh.md: 9a4656f30a43473fe90cde9c56d45f48943e5d10 +2026-07-06-approval-seam.md: ae143a41302b7bcd6029345fa91ca4eda837c141 +2026-07-06-approval-seam.zh.md: a66ce804167fd4de5c8dbe51d70c9b038d1ebb17 diff --git a/.agents/notes/implemented/feature/2026-07-06-approval-seam.md b/.agents/notes/implemented/feature/2026-07-06-approval-seam.md index efb4159d73..ae143a4130 100644 --- a/.agents/notes/implemented/feature/2026-07-06-approval-seam.md +++ b/.agents/notes/implemented/feature/2026-07-06-approval-seam.md @@ -25,7 +25,7 @@ One `cordis.yml` entry mounts the seam. Not loading it is the fail-closed opt-ou # policy: never # deployment default for sessions without an override; 'ask' when omitted ``` -The entry alone provides mechanism, not a channel: with no answerer composed, every ask resolves `unavailable` and the asking tool call denies — fail-closed needs no configuration. Composing the ACP app (`@deepseek-ai/dsh-acp-demo`, as in [the acp-agent example's default tree](../../../../examples/acp-agent/README.md)) completes the loop: its [automation-only bridge](../simplification/2026-07-23-acp-automation-only-protocol.md) registers an answerer that sends `session/request_permission` to the owning client with the exact tool-call id and one-shot allow/reject options. `policy: never` is the unattended stance — every ask auto-rejects deterministically and is stated in the system prompt. `policy` is validated against the closed list at plugin load; anything else throws. +The entry alone provides mechanism, not a channel: with no answerer composed, every ask resolves `unavailable` and the asking tool call denies — fail-closed needs no configuration. Composing the ACP app (`@deepseek-ai/dsh-acp-demo`, as in [the acp-agent example's default tree](../../../../examples/acp-agent/README.md)) completes the loop: its [automation-only bridge](../simplification/2026-07-23-acp-automation-only-protocol.md) registers an answerer that sends `session/request_permission` to the owning client with the exact tool-call id and one-shot allow/reject options. `policy: never` is the unattended stance — every ask auto-rejects deterministically, and the current value joins the runtime-context snapshot. `policy` is validated against the closed list at plugin load; anything else throws. What a composed deployment observes: `allowed-once` lets exactly that call proceed; rejection, dismissal, and channel absence deny with three distinct reasons the model can tell apart; a successful in-turn request lands a durable `approval/asked`/`approval/decided` pair on the asking agent's session log; nothing about a grant persists past the call that asked. An idle request or audit append failure rejects instead of returning an unaudited decision. @@ -63,7 +63,7 @@ Answerers are `approval/request` waterfall listeners. Zero listeners fall throug #### The per-session policy tier -The seam also owns the session-scoped `'ask' | 'never'` policy described by [the sandbox Agent Note](2026-07-06-sandbox.md). Effective policy is folded from logged switches over the deployment default. `'never'` resolves to `rejected` inside `request()` before any answerer can run; `'ask'` dispatches and otherwise falls through to `unavailable`. The prompt states only deterministic `'never'`, switch narration is coalesced, and every request still records the audit pair. +The seam also owns the session-scoped `'ask' | 'never'` policy described by [the sandbox Agent Note](2026-07-06-sandbox.md). Effective policy is folded from logged switches over the deployment default. `'never'` resolves to `rejected` inside `request()` before any answerer can run; `'ask'` dispatches and otherwise falls through to `unavailable`. Both current values join the atomic runtime-context snapshot before each model request, so a policy switch needs no separate narration; every approval request still records the audit pair. #### The ACP answerer @@ -83,7 +83,7 @@ The answerer routes through the bridge's exact-agent ownership check described b Unit tests pin outcomes, first-wins delegation, containment, cancellation, scoped routing, audit pairing, the unbypassable `'never'` policy, tool deny reasons, and ACP ownership/outcome mapping through a real scripted bridge. -Snapshots record allowed and rejected sandbox escalation through `session/request_permission`, plus the `'never'` prompt and policy-switch notice. Unscripted permission prompts cancel and fail closed. +Snapshots record allowed and rejected sandbox escalation through `session/request_permission`, plus the complete `'ask'` and `'never'` runtime-context contributions. Unscripted permission prompts cancel and fail closed. ## Deferred @@ -124,7 +124,7 @@ Costs and accepted limits: - **What happens when the user dismisses the prompt, or the turn aborts mid-ask?** Dismissal maps to `cancelled` with its own deny text. An already-aborted signal settles `cancelled` without dispatching; an abort during the ask discards the late answer. When both audit appends commit, either path records one pair, never two. - **What if the client answers with an option the harness never offered?** Any selection other than the offered `allow_once` maps to `rejected` — an unknown optionId from a non-conforming client can never grant. - **How do subagents' approvals route?** An agent no answerer owns delegates through the whole waterfall and fails closed — in-process subagents are deliberately unanswerable. A `'never'` parent seeds that override into each in-process child's log ([decision](2026-07-25-subagent-policy-inheritance.md)), so the child is told up front instead of asking into the empty waterfall. `subagent-acp`'s child-side auto-answer is separate; routing a child's asks to the parent controller is deferred (§ Deferred). -- **What does `policy: 'never'` actually change at runtime?** The service resolves every ask for that session to `rejected` before dispatching any answerer (in-service, so no registration order can bypass it); the system prompt states the policy; switches are narrated at boundaries; each successful auto-rejection records the audit pair. +- **What does `policy: 'never'` actually change at runtime?** The service resolves every ask for that session to `rejected` before dispatching any answerer (in-service, so no registration order can bypass it); the next atomic runtime-context snapshot states the policy; each successful auto-rejection records the audit pair. - **What happens across a hot reload, or when an answerer unloads mid-session?** Answerers dispose with their owning fiber, so the next ask degrades to `unavailable` instead of hanging on a dead channel; remounting re-registers the answerer with no catch-up state. - **Where does a client get approval context?** The request carries the exact `callId` and the asker's human-readable `reason`; channel adapters may correlate richer tool-call state without duplicating arguments in the approval seam. diff --git a/.agents/notes/implemented/feature/2026-07-06-approval-seam.zh.md b/.agents/notes/implemented/feature/2026-07-06-approval-seam.zh.md index 9a4656f30a..a66ce80416 100644 --- a/.agents/notes/implemented/feature/2026-07-06-approval-seam.zh.md +++ b/.agents/notes/implemented/feature/2026-07-06-approval-seam.zh.md @@ -25,7 +25,7 @@ Status: implemented # policy: never # deployment default for sessions without an override; 'ask' when omitted ``` -仅有这条条目只提供机制，不提供通道：没有组合应答者时，每次 ask 都解析为 `unavailable`，发起请求的工具调用被拒绝——失败关闭无需配置。组合 ACP 应用（`@deepseek-ai/dsh-acp-demo`，如 [acp-agent 示例的默认树](../../../../examples/acp-agent/README.md)）即可闭环：其[仅面向自动化的桥接层](../simplification/2026-07-23-acp-automation-only-protocol.md)注册一个应答者，向拥有该会话的客户端发送 `session/request_permission`，携带精确的工具调用 id 和一次性 allow/reject 选项。`policy: never` 是无人值守姿态：每次 ask 确定性地自动拒绝，并在系统提示词中声明。`policy` 在插件加载时对照封闭列表校验；非法值直接抛异常。 +仅有这条条目只提供机制，不提供通道：没有组合应答者时，每次 ask 都解析为 `unavailable`，发起请求的工具调用被拒绝——失败关闭无需配置。组合 ACP 应用（`@deepseek-ai/dsh-acp-demo`，如 [acp-agent 示例的默认树](../../../../examples/acp-agent/README.md)）即可闭环：其[仅面向自动化的桥接层](../simplification/2026-07-23-acp-automation-only-protocol.md)注册一个应答者，向拥有该会话的客户端发送 `session/request_permission`，携带精确的工具调用 id 和一次性 allow/reject 选项。`policy: never` 是无人值守姿态：每次 ask 都会被确定性地自动拒绝，当前值也会加入运行时上下文快照。`policy` 在插件加载时对照封闭列表校验；非法值直接抛异常。 组合部署的可观测行为：`allowed-once` 仅允许该次调用继续；拒绝、关闭和通道缺失以三种不同原因拒绝，模型可以区分；轮次内成功的请求会在发起请求的 agent 的会话日志上落一对持久的 `approval/asked`/`approval/decided` 事件；授权不会在发起请求的调用结束后继续存在。空闲时的请求或审计追加失败会拒绝，而不会返回未经审计的决策。 @@ -63,7 +63,7 @@ tool/result "escalated" — this one call ran under the wider mode; the gra #### 每会话策略层 -seam 还拥有[沙箱 Agent Note](2026-07-06-sandbox.md) 所描述的会话级 `'ask' | 'never'` 策略。生效策略由日志中记录的切换在部署默认值之上折叠而成。`'never'` 会在任何应答者运行之前，于 `request()` 内部解析为 `rejected`；`'ask'` 则派发请求，否则一路委派至 `unavailable`。提示词仅声明确定性的 `'never'`，切换叙述会被合并，每个请求仍记录审计对。 +seam 还拥有[沙箱 Agent Note](2026-07-06-sandbox.md) 所描述的会话级 `'ask' | 'never'` 策略。生效策略由日志中记录的切换在部署默认值之上折叠而成。`'never'` 会在任何应答者运行之前，于 `request()` 内部解析为 `rejected`；`'ask'` 则派发请求，否则一路委派至 `unavailable`。两个当前值都会在每次模型请求前加入原子化的运行时上下文快照，因此策略切换无需单独叙述；每次批准请求仍会记录审计对。 #### ACP 应答者 @@ -83,7 +83,7 @@ ACP 桥只应答其会话映射所拥有的精确 agent 对象。它携带既有 单元测试固定结果、先到先得的委派、错误容纳、取消、作用域路由、审计配对、不可绕过的 `'never'` 策略、工具拒绝原因，以及通过真实脚本化桥实现的 ACP 归属/结果映射。 -快照记录通过 `session/request_permission` 批准和拒绝沙箱升级，以及 `'never'` 提示词与策略切换通知。没有脚本化应答的权限提示会取消并失败关闭。 +快照记录通过 `session/request_permission` 批准和拒绝沙箱升级，以及完整的 `'ask'` 与 `'never'` 运行时上下文贡献。没有脚本化应答的权限提示会取消并失败关闭。 ## 延后 @@ -124,7 +124,7 @@ ACP 桥只应答其会话映射所拥有的精确 agent 对象。它携带既有 - **用户关闭提示或轮次在 ask 进行中中止时会发生什么？** 关闭映射为 `cancelled` 并携带自己的拒绝文本。已中止的 signal 直接结算为 `cancelled` 而不派发；ask 进行中的中止丢弃迟到的应答。当两个审计追加都提交时，任一路径都记录恰好一对事件，绝不会两对。 - **如果客户端以 harness 从未提供的选项应答呢？** 除已提供的 `allow_once` 之外的任何选项都映射为 `rejected`——来自不合规客户端的未知 optionId 永远不能授权。 - **subagent 的审批如何路由？** 没有应答者拥有的 agent 穿过整个 waterfall 委派并失败关闭——进程内 subagent 被刻意设计为不可应答。`'never'` 父级会把该覆盖项预置到每个进程内子 agent 的日志中（[决策](2026-07-25-subagent-policy-inheritance.md)），因此子 agent 一开始就会得知，而不是向空的 waterfall 发出 ask。`subagent-acp` 的子侧自动应答是独立的；将子 agent 的 ask 路由到父控制器已延后（§ 延后）。 -- **`policy: 'never'` 在运行时实际改变了什么？** 服务在派发任何应答者之前，将该会话的每次 ask 解析为 `rejected`（在服务内部，因此没有注册顺序能绕过它）；系统提示词声明该策略；切换在边界处被叙述；每次成功的自动拒绝都会记录审计对。 +- **`policy: 'never'` 在运行时实际改变了什么？** 服务在派发任何应答者之前，将该会话的每次 ask 解析为 `rejected`（在服务内部，因此没有注册顺序能绕过它）；下一份原子化的运行时上下文快照会声明该策略；每次成功的自动拒绝都会记录审计对。 - **热重载或应答者在会话中途卸载时会发生什么？** 应答者随其拥有的 fiber 一起 dispose，因此下一次 ask 降级为 `unavailable` 而非挂在死通道上；重新挂载会重新注册应答者，无需追赶状态。 - **客户端从哪里获得审批上下文？** 请求携带精确的 `callId` 和发起方的人类可读 `reason`；通道适配器可自行关联更丰富的工具调用状态，而无需在审批 seam 中重复携带参数。 diff --git a/.agents/notes/implemented/feature/2026-07-06-sandbox.i18n.yaml b/.agents/notes/implemented/feature/2026-07-06-sandbox.i18n.yaml index 9311c6cac7..d5727d9c4b 100644 --- a/.agents/notes/implemented/feature/2026-07-06-sandbox.i18n.yaml +++ b/.agents/notes/implemented/feature/2026-07-06-sandbox.i18n.yaml @@ -2,5 +2,5 @@ # side as of the last confirmed-consistent state. Both languages carry equal authority; # after editing either side, bring the other along and re-record with: # pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-06-sandbox.md -2026-07-06-sandbox.md: 42b78ad8341dd52c4dd146a2207a5ae909d28f1e -2026-07-06-sandbox.zh.md: dfa3349e4d74d6f2c4944414c25fe3726d4a9b5a +2026-07-06-sandbox.md: 4355ab57374f77f1733fff39e2fb4ccadcedaf6b +2026-07-06-sandbox.zh.md: 02c5337555b7466c2bac7fc4774cdd2c945178ae diff --git a/.agents/notes/implemented/feature/2026-07-06-sandbox.md b/.agents/notes/implemented/feature/2026-07-06-sandbox.md index 42b78ad834..4355ab5737 100644 --- a/.agents/notes/implemented/feature/2026-07-06-sandbox.md +++ b/.agents/notes/implemented/feature/2026-07-06-sandbox.md @@ -40,7 +40,7 @@ The swap is invisible to every consumer of `ctx.bash`: the bash tools, hook comm Misconfiguration fails loud: `mode` outside the closed vocabulary is rejected at plugin load, and a host with no usable backend throws the structured `SANDBOX_UNAVAILABLE` — at `confine()` before the command ever spawns — rather than degrading to unconfined execution. `runnerCommand` on `dsh-sandbox-local` is the operator's explicit assertion of a bwrap-compatible runner (chain and probes skipped); it doubles as the deterministic fake-runner seam for keyless tests. -Denied file effects return a `[sandbox: file access denied under mode]` marker and instructions not to work around the denial. A confining executor adds paired `sandbox_permissions` and `justification` fields for one approved retry that must be strictly wider than the session's effective mode. A grant widens only that retry; rejection executes nothing, returns `the user rejected escalating this command to ""`, and permits no re-ask. The prompt does not announce sandbox mode, avoiding preemptive refusal. When `dsh-permission` is composed with a UI adapter, one preset selects both knob values; unmatched values fold to `custom`. The [ACP automation composition](../../../../examples/acp-agent/README.md) does not mount that UI service and selects its deployment mode explicitly. +Denied file effects return a `[sandbox: file access denied under mode]` marker and instructions not to work around the denial. A confining executor adds paired `sandbox_permissions` and `justification` fields for one approved retry that must be strictly wider than the session's effective mode. A grant widens only that retry; rejection executes nothing, returns `the user rejected escalating this command to ""`, and permits no re-ask. The owner-derived runtime context states the current file policy without replacing those enforcement boundaries. When `dsh-permission` is composed with a UI adapter, one preset selects both knob values; unmatched values fold to `custom`. The [ACP automation composition](../../../../examples/acp-agent/README.md) does not mount that UI service and selects its deployment mode explicitly. ### Design detail @@ -72,7 +72,7 @@ Backend profiles share the mode contract but differ in necessary host grants. La `dsh-bash-sandbox` extends `LocalBashExecutor` and hands `ctx.sandbox` the exact `['bash', '-c', command]` argv it is about to spawn. A denial is an orthogonal result fact, conservatively classified from the active runner's stderr dialect. A runner failure outranks denial: foreground execution throws `SANDBOX_UNAVAILABLE`; a settled `BashProcess` stamps `sandbox.runnerFailed`, and the bash producer renders it through generic `task_output`. -The model's view is result facts only: the static tool description explains the denial marker (`[sandbox: file access denied under mode]`), encourages attempting commands that may be denied, and forbids retrying around a denial; when the escalation fields are advertised, a denied result additionally carries the escalation hint itself, so the sanctioned same-turn retry is prompted at the decision point rather than depending on the model recalling the description (§ Escalation). No prompt section states the sandbox mode (§ Per-session modes). +The model sees the current effective file policy in the owner-derived `sandbox:policy` runtime context, while the static tool description explains the denial marker (`[sandbox: file access denied under mode]`), encourages attempting commands that may be denied, and forbids retrying around a denial; when the escalation fields are advertised, a denied result additionally carries the escalation hint itself, so the sanctioned same-turn retry is prompted at the decision point rather than depending on the model recalling the description (§ Escalation). [The current-policy decision](2026-07-30-current-sandbox-policy-context.md) owns the context's rationale and boundaries. #### Escalation: one approved wider retry after a denial @@ -105,7 +105,7 @@ interface SessionEventMap { Each owner exports the same three-piece kit: the event declaration, a pure fold (`effectiveSandboxMode(events)` / `effectiveApprovalPolicy(events)` — a `findLast`, typed to the domain's closed union), and THE write path (`setSandboxMode(session, mode)` / `setApprovalPolicy(session, policy)` — a switch IS its event; nothing mutates state out of band). No shared owner service, no generic facts map, no registry: a third knob copies the ~40-line pattern into its own package. Execution follows the fold on both sides — the bash tool's per-call stamp reads it as the middle rung of the § Escalation precedence chain, and the approval seam's `'never'` gate is [the approval Agent Note](2026-07-06-approval-seam.md)'s side of the same pattern. -Sandbox mode is not narrated in the prompt; denial results report the mode when it matters, avoiding preemptive refusal based on a standing label. Approval policy is different: only `'never'` is stated because automatic rejection otherwise looks like a user decision. Policy-change notices are coalesced and delivered by the next pre-step, with log-derived fallback after restart. The notice source is inferred from event position: a knob event after the last request header is user-driven; unlogged drift is operator or config driven. +Sandbox and approval policy are rendered as ordered contributions to one runtime-context snapshot before every request. The loop records the complete snapshot as a sourced `user/message`; both `'ask'` and `'never'` are explicit, so neither owner needs switch narration or last-told state. **The optional UI surface** is `PermissionService`: a deployment-defined preset table whose entries bundle one sandbox mode with one approval policy. The shipped `workspace-write` and `danger-full-access` presets write through to both domain setters; a knob combination outside the table is reported as `custom`. UI adapters may expose that table as a selector. The automation-only ACP transport advertises no configuration selector and mounts no permission-preset service. @@ -117,10 +117,10 @@ fs/web/todo execute in-process, so their sandbox semantics are policy at their s ### Testing -- **Unit:** pin platform selection and profiles, fail-closed runner classification, per-call mode/root resolution, per-process facts, escalation validation and outcomes, permission preset folding and write-through, and narrator coalescing. +- **Unit:** pin platform selection and profiles, fail-closed runner classification, per-call mode/root resolution, per-process facts, escalation validation and outcomes, permission preset folding and write-through, and runtime-context ordering and materialization. - **Keyless real-runner:** exercise bwrap, Landlock, and Seatbelt against real filesystem effects at provider and bash-consumer layers; one real Cordis context concurrently drives two project sessions through shipped bash and fs tools, proving own-root success and sibling-root denial. Packed-install coverage proves the registry launcher remains executable. CI rejects a silent all-skip. - **With-key:** start the real ACP composition in read-only mode, let a model-driven bash write hit the runner's denial marker, then drive the bridge answerer and disk effect through granted and rejected workspace-write retries; unavailable credentials or runners self-skip. -- **Snapshot:** pin prompt deltas and notices plus both scripted approval branches. A real ACP example scenario places its session under the user home while the deployment fallback points at `/tmp`, then pins a successful deployment-selected workspace-write mutation; this distinguishes session-root resolution from the process fallback without depending on runner-specific denial text. Other snapshots start unconfined so unrelated fixtures remain platform-independent. +- **Snapshot:** pin the atomic current-policy context and both scripted approval branches. A real ACP example scenario places its session under the user home while the deployment fallback points at `/tmp`, then pins both the workspace-write runtime-context message and a successful deployment-selected mutation; this distinguishes session-root resolution from the process fallback without depending on runner-specific denial text. Other snapshots start unconfined so unrelated fixtures remain platform-independent. ## Deferred phases @@ -149,9 +149,9 @@ Each phase gets its full design when picked up, validated against the code at th - **Per-session dynamic tool schemas** — rejected: schemas are registry-global by design (one assembly vocabulary, the pinned-header snapshot contract), and re-registering per session would buy only what the execution-time strict-wider check already guarantees, at the cost of a per-session schema surface and header churn on every switch. - **Hard-match the retry to a prior denial** — rejected: command-string identity is fragile (quoting, `workdir`, env prefixes, a pipeline retried as its failing stage) — false-rejects honest retries or is trivially satisfied; the real boundary is the human seeing command + justification. Revisit only if `allow_always` grant storage ever needs machine-checkable scopes. - **A generic `env/state` facts map with an owner service** — rejected: approval and sandbox compose independently, so neither's state may drag in a third package; single-key folds are one `findLast` each, dissolving the owner service; no invariant spans the knobs, so atomic multi-key patches bought nothing. -- **Narrate via `agent/user-message` + a bus event** — rejected: it presupposes a turn-entry seam that does not exist (the real seam is `agent/prompt-submit`), and pre-step's position serves both the coalesced turn-entry notice and the mid-turn immediacy bound with one listener. -- **A standing prompt statement of the sandbox mode (+ a switch narrator)** — shipped first, then removed on live evidence: with `Bash commands run under the "read-only" file sandbox.` in every request, the model refused to ATTEMPT denied-then-escalatable work (five of twelve turns in the first manual session ended with zero tool calls), turning the sandbox into a soft lockout. The denial marker names the mode at the moment it matters and the escalation fields carry the recovery; the approval knob keeps its statement because an auto-rejection is behaviorally indistinguishable from a human "no". -- **Track "last told" with its own bookkeeping events** — rejected: the `request/header` fold already records the exact prompt the model saw; parsing the closed candidate sentences back replaces a second bookkeeping stream — events are needed only where they ARE the store. +- **Narrate each switch through `agent.inject()` plus a bus event** — rejected: independent notices expose owner ordering and intermediate combinations, while one assembly pass can materialize the complete current state atomically at the request boundary. +- **State sandbox mode in the stable system prompt** — shipped first, then removed on live evidence: with `Bash commands run under the "read-only" file sandbox.` in every request, the model refused to ATTEMPT denied-then-escalatable work (five of twelve turns in the first manual session ended with zero tool calls), turning the sandbox into a soft lockout. The denial marker names the mode at the moment it matters and the escalation fields carry the recovery. The absence decision is superseded by [the current-policy decision](2026-07-30-current-sandbox-policy-context.md); this measurement and causal observation remain the evidence that any replacement must counter-test. +- **Track "last told" with its own bookkeeping events** — rejected: the latest sourced runtime-context `user/message` records the exact full snapshot the model saw. Materializing that snapshot from current owner contributions replaces a second bookkeeping stream — events are needed only where they ARE the store. - **Independent sandbox and approval selectors** — rejected: one deployment-defined permission preset keeps the two policy knobs coherent for UI clients that expose runtime switching. ## Consequences @@ -160,12 +160,12 @@ What shipped pins — the tiers in Testing hold each: - A denied command retried with `sandbox_permissions` + `justification` prompts the user through the composed answerer chain; a grant runs THAT call under the wider mode (result facts say so) while every other call keeps its own effective mode; every non-grant outcome produces its distinct error text and executes nothing. - The escalation fields exist exactly when the mounted executor confines; a request that is not strictly wider than the call's effective mode fails closed with its own text and prompts no one; a deployment with no ApprovalService fails escalating calls closed and leaves plain calls untouched. -- The system prompt never states the sandbox mode (an approval `'never'` policy is the one stated knob), and the whole exchange — headers, knob events, notices, approvals, results — reconstructs from the session log alone, with no event types beyond the two knob events. -- One preset selection records only changed knob values, while a no-op selection records nothing; an approval-policy switch is narrated in at most one coalesced notice, and a committed sandbox switch is honored by the next call's stamp. -- A resumed session's overrides apply with no catch-up state; a default changed while the process was down is narrated before the session's first new request, attributed to the operator. +- One sourced runtime-context message states the complete current sandbox and approval policies atomically; the whole exchange — context snapshots, headers, knob events, approval notices, approvals, and results — reconstructs from the session log alone, with no policy bookkeeping events beyond the two knob events. +- One preset selection records only changed knob values, while a no-op selection records nothing; the next request snapshots both current values atomically, and a committed sandbox switch is honored by the next call's stamp. +- A resumed session's overrides enter its first new runtime-context snapshot with no catch-up state; a composition default changed while the process was down likewise appears in that snapshot. - Two concurrent sessions never see each other's state or notices. - Two concurrent project sessions in one Cordis context resolve independent workspace roots; bash and fs writes succeed inside the calling session's cwd and fail against its neighbor's cwd. -- `agent-loop` is untouched — everything rides `systemPrompt.section`, `SessionEventMap` merging, `agent.inject()`, `agent/step`, `agent/prompt-submit`, and capability-owned policy resolution. +- Policy ownership stays in plugins through `systemPrompt.context`, `SessionEventMap` merging, and capability-owned resolution; the generic loop change materializes every owner's ordered context as one sourced message. Costs and accepted limits: @@ -178,9 +178,8 @@ Costs and accepted limits: - **The model may over-ask.** Escalating without denial grounding, or picking `danger-full-access` where `workspace-write` suffices: the description steers and the enum forces the ladder, but the human prompt is the actual gate; the `approval/asked` reasons make over-asking auditable, and a `prepend` policy answerer can auto-reject patterns a deployment never wants. - **The advertised target set is static while the effective mode is per-session** (schemas are registry-global) — a session already at the widest mode is still offered the fields. Harmless by construction: the strict-wider check at execution, not the enum, is the safety boundary — a non-widening request fails with its own text and never prompts anyone. - **A granted escalation is not a working sandbox.** An unavailable backend still fails closed even for a granted escalation to a confining mode — at `confine()` when the platform has no chain or every probe fails, at execution when an unprobed sole runner refuses (classified as a sandbox failure, not a command failure) — while a granted `danger-full-access` run never touches the provider at all: there the grant, not the probe, is the authority. -- **The approval narrator's restart baseline parses prompt prose.** The closed candidate sentence is owned by the writing module itself, so a wording change is a coordinated writer+parser edit in one file; a session whose headers predate the section silently adopts the current policy without a notice. -- **The approval section is still a dynamic prompt surface** (a `'never'` switch breaks provider prompt-prefix caching for that session). Accepted: policy switches are rare, and a model acting on a stale `'never'` is worse. The sandbox knob no longer touches the prompt at all. -- **The model may hold a stale belief about the sandbox mode** (nothing announces a switch). Accepted deliberately: the next attempt's marker or success corrects it, and the observed failure mode of announcing — preemptive refusal — is worse than one wasted retry. +- **Runtime-context history is append-only.** A policy switch appends a complete superseding snapshot after retained history, preserving the stable system-and-conversation prefix; unchanged state adds no message. +- **Older policy snapshots remain in history.** Each full snapshot explicitly supersedes earlier runtime-context snapshots, so replay and compaction need only retain the latest materialized message. ## FAQ @@ -191,8 +190,8 @@ Costs and accepted limits: - **Does the sandbox restrict network or process visibility?** No — `SandboxMode` claims FILE effects only; the bwrap profile deliberately does not unshare pid, and no backend claims network. Whether network restriction becomes its own knob is left open in § The seam. - **Which tools actually run confined?** OS subprocesses through `ctx.bash` — the bash tools, and hook commands transitively — plus the filesystem tools (`read`/`write`/`edit`) through the sandboxed `ctx.fs` provider (the [cross-family fs sandbox RFC](2026-07-14-cross-family-fs-sandbox.md)): bash confines via the OS runner, fs via an in-process path fence, both keying off the same `ctx.sandboxPolicy` mode. web/todo stay in-process and unfenced (web's only effect is network, outside the file-effect mode vocabulary). - **Does a granted escalation persist?** No. The grant is consumed by the exact foreground or background call that asked; every neighboring call keeps its own effective mode. A later background denial surfaces through `task_output` and may ground a new exact-command retry. -- **When does a runtime mode switch take effect?** Once its session event commits, the very next capability resolution folds and stamps the new mode. The model is not told a standing mode; its next command simply behaves under the new policy, and any denial names that policy at the point of use. -- **What survives a restart — and what if the operator changed the config default while the process was down?** Overrides replay from the session log (`effective = fold ?? config`), so a resumed session keeps its modes with zero catch-up machinery; a default that drifted offline changes behavior the same way a switch does (the approval policy, being stated, is additionally narrated with operator/config attribution). +- **When does a runtime mode switch take effect?** Once its session event commits, the next runtime-context snapshot and the next capability resolution fold the new mode. The sourced context message records what the model was told, and any later denial names the same policy at the point of use. +- **What survives a restart — and what if the operator changed the config default while the process was down?** Overrides replay from the session log (`effective = fold ?? config`), so a resumed session keeps its modes with zero catch-up machinery; a default that drifted offline enters the next full runtime-context snapshot. - **What does `enforcement: 'partial'` on a result mean?** The selected backend enforces the subset its kernel ABI governs — e.g. Landlock before ABI v3 does not govern path truncate — and says so structurally instead of refusing the host; the probe's report line distinguishes the cases. The bwrap and Seatbelt profiles govern every promised file effect by construction, so they always report `full`. ## Prior art diff --git a/.agents/notes/implemented/feature/2026-07-06-sandbox.zh.md b/.agents/notes/implemented/feature/2026-07-06-sandbox.zh.md index dfa3349e4d..02c5337555 100644 --- a/.agents/notes/implemented/feature/2026-07-06-sandbox.zh.md +++ b/.agents/notes/implemented/feature/2026-07-06-sandbox.zh.md @@ -40,7 +40,7 @@ harness 是一个 SDK，因此约束必须是开发者可组合的能力：是 配置错误大声失败：`mode` 不在封闭词汇中时在插件加载时被拒绝；主机上没有可用后端时在 `confine()` 阶段（命令 spawn 之前）抛出结构化的 `SANDBOX_UNAVAILABLE`，而非降级为无约束执行。`dsh-sandbox-local` 上的 `runnerCommand` 是运维人员对一个 bwrap 兼容 runner 的显式断言（跳过链和探测）；它同时充当 keyless 测试的确定性 fake-runner seam。 -被拒绝的文件操作返回 `[sandbox: file access denied under mode]` 标记，并附带不要绕过拒绝的指令。约束执行器添加配对的 `sandbox_permissions` 和 `justification` 字段，用于一次经批准的重试，该重试必须严格宽于会话的有效模式。授权仅放宽该次重试；拒绝则不执行任何内容，返回 `the user rejected escalating this command to ""`，且不允许再次请求。提示词不声明沙箱模式，以避免基于常驻标签的预防性拒绝。当 `dsh-permission` 与某个 UI 适配器一起组合时，一个 preset 同时选定两个旋钮值；不匹配的组合折叠为 `custom`。[ACP 自动化组合](../../../../examples/acp-agent/README.md)不挂载该 UI 服务，而是显式选定其部署模式。 +被拒绝的文件操作返回 `[sandbox: file access denied under mode]` 标记，并附带不要绕过拒绝的指令。约束执行器添加配对的 `sandbox_permissions` 和 `justification` 字段，用于一次经批准的重试，该重试必须严格宽于会话的有效模式。授权仅放宽该次重试；拒绝则不执行任何内容，返回 `the user rejected escalating this command to ""`，且不允许再次请求。由归属方派生的运行时上下文会说明当前文件策略，但不会取代这些强制执行边界。当 `dsh-permission` 与某个 UI 适配器一起组合时，一个 preset 同时选定两个旋钮值；不匹配的组合折叠为 `custom`。[ACP 自动化组合](../../../../examples/acp-agent/README.md)不挂载该 UI 服务，而是显式选定其部署模式。 ### 设计细节 @@ -72,7 +72,7 @@ Landlock launcher 源码和包工作区位于 `native/landlock-run`，与 harnes `dsh-bash-sandbox` 扩展 `LocalBashExecutor`，并把即将 spawn 的确切 `['bash', '-c', command]` argv 交给 `ctx.sandbox`。拒绝是与其他结果正交的事实，依据当前 runner 的 stderr 方言保守分类。Runner 失败优先于拒绝：前台执行抛出 `SANDBOX_UNAVAILABLE`；结算后的 `BashProcess` 会盖章 `sandbox.runnerFailed`，bash 生产者再通过通用 `task_output` 渲染它。 -模型看到的仅是结果事实：静态工具描述解释拒绝标记（`[sandbox: file access denied under mode]`），鼓励尝试可能被拒绝的命令，并禁止绕过拒绝重试；当升级字段被公布时，被拒绝的结果还额外携带升级提示本身，使被认可的同轮次重试在决策点被提示，而非依赖模型回忆描述（§ 升级机制）。没有提示词段落声明沙箱模式（§ 按会话模式）。 +模型会在归属方派生的 `sandbox:policy` 运行时上下文中看到当前有效的文件策略；静态工具描述则解释拒绝标记（`[sandbox: file access denied under mode]`），鼓励尝试可能被拒绝的命令，并禁止绕过拒绝重试。当升级字段被公布时，被拒绝的结果还会携带升级提示本身，使被认可的同轮次重试在决策点获得提示，而非依赖模型回忆描述（§ 升级机制）。[当前策略决策](2026-07-30-current-sandbox-policy-context.md)负责该上下文的理由与边界。 #### 升级机制：拒绝后一次经批准的更宽重试 @@ -105,7 +105,7 @@ interface SessionEventMap { 每个拥有者导出相同的三件套：事件声明、纯 fold（`effectiveSandboxMode(events)` / `effectiveApprovalPolicy(events)`——一个 `findLast`，类型化到领域的封闭联合），以及唯一的写入路径（`setSandboxMode(session, mode)` / `setApprovalPolicy(session, policy)`——切换即其事件；没有任何东西在带外修改状态）。无共享拥有者服务、无通用 facts map、无注册表：第三个旋钮只需将约 40 行模式复制到自己的包中。执行在两侧都遵循 fold——bash 工具的按调用盖章将其作为 § 升级机制优先级链的中间层读取，approval seam 的 `'never'` 门控是[批准 Agent Note](2026-07-06-approval-seam.md) 同一模式的另一侧。 -沙箱模式不在提示词中叙述；拒绝结果在需要时报告模式，避免基于常驻标签的预防性拒绝。批准策略不同：只有 `'never'` 被声明，因为自动拒绝在行为上与用户的「不」无法区分。策略变更通知被合并，由下一个步骤前检查点递送，重启后有基于日志的回退。通知来源从事件位置推断：最后一个 request header 之后的旋钮事件是用户驱动的；未记录的漂移是运维人员或配置驱动的。 +沙箱策略与批准策略会在每次请求前渲染为同一份运行时上下文快照中的有序贡献。循环会将完整快照记录为一条带来源的 `user/message`；`'ask'` 与 `'never'` 都会明确写入，因此两个归属方都无需切换叙述或「上次告知」状态。 **可选的 UI 界面**是 `PermissionService`：一张部署定义的 preset 表，每个条目捆绑一个沙箱模式与一个批准策略。随附的 `workspace-write` 和 `danger-full-access` preset 写入两个领域 setter；preset 表之外的旋钮组合报告为 `custom`。UI 适配器可以把该表暴露为选择器。仅面向自动化的 ACP 传输层不公布任何配置选择器，也不挂载权限 preset 服务。 @@ -117,10 +117,10 @@ fs/web/todo 在进程内执行，因此它们的沙箱语义是各自 seam 层 ### 测试 -- **单元测试：** 固定平台选择和 profile、失败关闭的 runner 分类、按调用的模式/根目录解析、按进程事实、升级验证和结果、权限 preset fold 和写入透传、以及叙述器合并。 +- **单元测试：** 固定平台选择和 profile、失败关闭的 runner 分类、按调用的模式/根目录解析、按进程事实、升级验证和结果、权限 preset fold 和写入透传、以及运行时上下文排序与具体化。 - **Keyless 真实 runner：** 在提供方和 bash 消费方层面对 bwrap、Landlock 和 Seatbelt 执行真实文件系统效果测试；一个真实 Cordis 上下文通过已交付的 bash 和 fs 工具并发驱动两个项目会话，证明在自身根目录写入成功、在兄弟根目录写入被拒绝。Packed-install 覆盖率证明注册表 launcher 保持可执行。CI 拒绝静默全跳过。 - **With-key：** 以只读模式启动真实 ACP 组合，让模型驱动的 bash 写入命中 runner 的拒绝标记，再通过已授权与被拒绝的 workspace-write 重试驱动 bridge 应答器和磁盘效果；不可用的凭证或 runner 自动跳过。 -- **快照：** 固定提示词 delta 和通知，以及两个脚本化的 approval 分支。一个真实 ACP 示例场景把会话放在用户主目录下，同时让部署后备根目录指向 `/tmp`，然后固定一次成功的、由部署选定的 workspace-write 变更；这能区分会话根目录解析与进程后备值，而不依赖 runner 特定的拒绝文本。其他快照以无约束启动，使无关 fixture（测试前置数据）保持平台无关。 +- **快照：** 固定原子化的当前策略上下文和两个脚本化的 approval 分支。一个真实 ACP 示例场景把会话放在用户主目录下，同时让部署后备根目录指向 `/tmp`，然后固定 workspace-write 运行时上下文消息与一次成功的、由部署选定的变更；这能区分会话根目录解析与进程后备值，而不依赖 runner 特定的拒绝文本。其他快照以无约束启动，使无关 fixture（测试前置数据）保持平台无关。 ## 延迟阶段 @@ -149,9 +149,9 @@ fs/web/todo 在进程内执行，因此它们的沙箱语义是各自 seam 层 - **按会话动态工具 schema**：否决。schema 设计上是注册表全局的（一套 assembly 词汇、固定 header 快照契约），按会话重新注册只能买到执行时严格放宽检查已保证的东西，代价是按会话的 schema 表面和每次切换的 header 变动。 - **将重试硬匹配到先前的拒绝**：否决。命令字符串同一性脆弱（引号、`workdir`、env 前缀、作为失败阶段重试的管道）——要么误拒诚实的重试，要么被轻易满足；真正的边界是人看到命令 + 理由。仅在 `allow_always` 授权存储需要机器可检查的范围时才重新考虑。 - **通用 `env/state` facts map 加拥有者服务**：否决。approval 和沙箱独立组合，因此任何一方的状态都不应拖入第三个包；单键 fold 各自是一个 `findLast`，拥有者服务自然消解；没有跨旋钮的不变式，因此原子多键补丁无收益。 -- **通过 `agent/user-message` + 总线事件叙述**：否决。它预设了一个不存在的轮次入口 seam（真正的 seam 是 `agent/prompt-submit`），而步骤前检查点的位置使一个监听器能够同时服务合并的轮次入口通知和轮中即时性约束。 -- **提示词中常驻声明沙箱模式（+ 切换叙述器）**：先交付后移除，基于实际证据：当每个请求中都有 `Bash commands run under the "read-only" file sandbox.` 时，模型拒绝尝试被拒绝后可升级的工作（首次手动会话中十二个轮次有五个以零工具调用结束），将沙箱变成了软锁定。拒绝标记在需要时命名模式，升级字段承载恢复路径；批准旋钮保留其声明，因为自动拒绝在行为上与人的「不」无法区分。 -- **用专门的簿记事件追踪「上次告知」**：否决。`request/header` fold 已记录模型看到的确切提示词；将封闭的候选句子解析回来替代了第二条簿记流——事件仅在它们本身即为存储时才需要。 +- **通过 `agent.inject()` 加总线事件逐次叙述切换**：否决。独立通知会暴露归属方顺序和中间组合，而一次组装过程可以在请求边界以原子方式具体化完整的当前状态。 +- **在稳定系统提示词中声明沙箱模式**：先行交付，随后根据线上证据移除：每次请求都带有 `Bash commands run under the "read-only" file sandbox.` 时，模型会拒绝尝试本可在被拒后升级的工作（首次人工会话的十二个轮次中有五个以零工具调用结束），使沙箱变成软锁死。拒绝标记会在相关时刻指出模式，升级字段则承载恢复路径。[当前策略决策](2026-07-30-current-sandbox-policy-context.md)取代了省略策略的决策；这项测量和因果观察仍是任何替代方案必须进行反证测试的依据。 +- **用专门的簿记事件追踪「上次告知」**：否决。最新一条带来源的运行时上下文 `user/message` 会记录模型看到的确切完整快照。根据当前归属方贡献具体化该快照，取代了第二条簿记流——事件仅在它们本身即为存储时才需要。 - **相互独立的沙箱与批准选择器**：否决。一个部署定义的权限 preset 让两个策略旋钮对暴露运行时切换的 UI 客户端保持一致。 ## 后果 @@ -160,12 +160,12 @@ fs/web/todo 在进程内执行，因此它们的沙箱语义是各自 seam 层 - 被拒绝的命令以 `sandbox_permissions` + `justification` 重试时，通过组合的应答器链提示用户；授权使该次调用在更宽模式下运行（结果事实如此报告），而其他所有调用保持各自的有效模式；每种非授权结果产生各自不同的错误文本且不执行任何内容。 - 升级字段恰好在已挂载的执行器约束时存在；不严格宽于调用有效模式的请求以自身文本失败关闭且不提示任何人；没有 ApprovalService 的部署对升级调用失败关闭，对普通调用不影响。 -- 系统提示词从不声明沙箱模式（批准 `'never'` 策略是唯一被声明的旋钮），且整个交互——header、旋钮事件、通知、批准、结果——仅从会话日志即可重建，除两个旋钮事件外无额外事件类型。 -- 一次 preset 选择只记录发生变化的旋钮值，而无操作的选择不记录任何内容；批准策略切换最多以一条合并通知叙述，已提交的沙箱切换由下一次调用的盖章兑现。 -- 恢复的会话的覆盖直接生效，无需追赶状态；进程停止期间变更的默认值在会话的首个新请求前被叙述，归因于运维人员。 +- 一条带来源的运行时上下文消息会以原子方式声明完整的当前沙箱策略与批准策略；整个交互——上下文快照、header、旋钮事件、批准通知、批准与结果——仅从会话日志即可重建，除两个旋钮事件外没有策略簿记事件。 +- 一次 preset 选择只记录发生变化的旋钮值，而无操作的选择不记录任何内容；下一个请求会把两个当前值共同纳入一份原子快照，已提交的沙箱切换由下一次调用的盖章兑现。 +- 恢复会话的覆盖项会进入其首个新运行时上下文快照，无需追赶状态；进程停止期间变更的组合默认值也会出现在该快照中。 - 两个并发会话永远看不到彼此的状态或通知。 - 同一个 Cordis 上下文中的两个并发项目会话解析各自独立的工作区根目录；bash 和 fs 写入在调用方会话的 cwd 内成功，对其相邻会话的 cwd 则失败。 -- `agent-loop` 未被触及——一切搭载 `systemPrompt.section`、`SessionEventMap` 合并、`agent.inject()`、`agent/step`、`agent/prompt-submit` 和由能力拥有的策略解析。 +- 策略归属仍通过 `systemPrompt.context`、`SessionEventMap` 合并和由能力归属方拥有的解析留在插件中；通用循环变更会将每个归属方的有序上下文具体化为一条带来源的消息。 代价与已接受的限制： @@ -178,9 +178,8 @@ fs/web/todo 在进程内执行，因此它们的沙箱语义是各自 seam 层 - **模型可能过度请求。** 在没有拒绝依据的情况下升级，或在 `workspace-write` 足够时选择 `danger-full-access`：描述引导且枚举强制阶梯，但人的提示词是实际门控；`approval/asked` 原因使过度请求可审计，且 `prepend` 策略应答器可以自动拒绝部署永远不想要的模式。 - **公布的目标集是静态的，而有效模式是按会话的**（schema 是注册表全局的）——已处于最宽模式的会话仍被提供这些字段。构造上无害：执行时的严格放宽检查（而非枚举）是安全边界——非放宽请求以自身文本失败且不提示任何人。 - **授权的升级不等于可工作的沙箱。** 不可用的后端即使对授权升级到约束模式也仍然失败关闭——在平台没有链或所有探测失败时于 `confine()` 阶段，在未探测的唯一 runner 拒绝时于执行阶段（归类为沙箱失败而非命令失败）——而授权的 `danger-full-access` 运行根本不触及提供方：此时授权（而非探测）是权威。 -- **批准叙述器的重启基线解析提示词文本。** 封闭的候选句子由写入模块本身拥有，因此措辞变更是同一文件中写入器+解析器的协调编辑；header 早于该段落的会话静默采用当前策略而不发通知。 -- **批准段落仍是动态提示词表面**（`'never'` 切换会破坏该会话的提供方提示词前缀缓存）。已接受：策略切换罕见，且模型基于过时的 `'never'` 行动更糟。沙箱旋钮不再触及提示词。 -- **模型可能持有关于沙箱模式的过时信念**（没有任何东西宣布切换）。有意接受：下一次尝试的标记或成功会纠正它，而宣布的观察到的失败模式——预防性拒绝——比一次浪费的重试更糟。 +- **运行时上下文历史仅追加。** 策略切换会在保留的历史之后追加一份用于取代先前快照的完整快照，从而保留稳定的系统与对话前缀；状态不变时不添加消息。 +- **旧策略快照仍保留在历史中。** 每份完整快照都会明确取代更早的运行时上下文快照，因此回放与压缩（compaction）只需保留最新具体化的消息。 ## FAQ @@ -191,8 +190,8 @@ fs/web/todo 在进程内执行，因此它们的沙箱语义是各自 seam 层 - **沙箱限制网络或进程可见性吗？** 不——`SandboxMode` 仅声称文件操作；bwrap profile 刻意不 unshare pid，没有后端声称网络。网络限制是否成为自己的旋钮留在 § seam 中开放。 - **哪些工具实际在约束下运行？** 通过 `ctx.bash` 的 OS 子进程——bash 工具及传递性的钩子命令——再加上通过沙箱化 `ctx.fs` 提供方运行的文件系统工具（`read`/`write`/`edit`，见[跨工具族 fs 沙箱 Agent Note](2026-07-14-cross-family-fs-sandbox.md)）：bash 通过 OS runner 约束，fs 通过进程内路径围栏约束，二者都以同一个 `ctx.sandboxPolicy` 模式为键。web/todo 仍在进程内且不受限制（web 的唯一效果是网络，不在文件效果模式词汇内）。 - **授权的升级会持久化吗？** 不会。授权由发起请求的确切前台或后台调用消费；每个相邻调用保留自己的有效模式。后续的后台拒绝通过 `task_output` 呈现，并且可以作为一次新的精确命令重试的依据。 -- **运行时模式切换何时生效？** 一旦其会话事件提交，紧接着的下一次能力解析就会折叠并盖章新模式。模型不被告知常驻模式；其下一个命令直接在新策略下运行，任何拒绝都会在使用点命名该策略。 -- **重启后什么存活——如果运维人员在进程停止期间改了配置默认值呢？** 覆盖从会话日志回放（`effective = fold ?? config`），因此恢复的会话以零追赶机制保持其模式；离线漂移的默认值以与切换相同的方式改变行为（批准策略因被声明，还额外以运维人员/配置归因叙述）。 +- **运行时模式切换何时生效？** 一旦其会话事件提交，下一个运行时上下文快照与下一次能力解析都会折叠新模式。带来源的上下文消息会记录模型收到的内容，之后的任何拒绝都会在使用点命名同一策略。 +- **重启后什么存活——如果运维人员在进程停止期间改了配置默认值呢？** 覆盖从会话日志回放（`effective = fold ?? config`），因此恢复的会话以零追赶机制保持其模式；离线漂移的默认值会进入下一份完整运行时上下文快照。 - **结果上的 `enforcement: 'partial'` 是什么意思？** 所选后端强制其内核 ABI 管控的子集——例如 ABI v3 之前的 Landlock 不管控路径 truncate——并以结构化方式如此声明而非拒绝主机；探测的报告行区分各种情况。bwrap 和 Seatbelt profile 构造上管控所有承诺的文件操作，因此始终报告 `full`。 ## 先例 diff --git a/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.i18n.yaml b/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.i18n.yaml index 11674d7747..9e8573a79d 100644 --- a/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.i18n.yaml +++ b/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.i18n.yaml @@ -2,5 +2,5 @@ # side as of the last confirmed-consistent state. Both languages carry equal authority; # after editing either side, bring the other along and re-record with: # pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.md -2026-07-20-dsh-cli-personal-config.md: 3331e36c86002d91fb272868268707fed014d01a -2026-07-20-dsh-cli-personal-config.zh.md: 172d84b075ed7ecc127c317b47e30581db67f89a +2026-07-20-dsh-cli-personal-config.md: 259c3865a9edcbc77949a9fe401af9a77e1e32c4 +2026-07-20-dsh-cli-personal-config.zh.md: 8f7c15c3c683cc855c6e3b704bfde8f87d4009d2 diff --git a/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.md b/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.md index 3331e36c86..259c3865a9 100644 --- a/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.md +++ b/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.md @@ -39,9 +39,9 @@ Hot-reload interplay: the include re-applies its `patches` on every config re-re ## Consequences - `dsh` from any directory (and `pnpm run demo:tui`) boots the personal provider/model with zero repo changes; verified end-to-end against a personal Anthropic proxy with Opus 4.8, including a bash tool round trip. -- Because an id-targeted patch replaces the whole `config`, a personal override restates the base fields it keeps and can drift when the base entry changes shape; the loader's entry-not-found/name-mismatch warnings are the only diagnostics. +- Because an id-targeted patch replaces the whole `config`, a personal override restates the base fields it keeps and can drift when the base entry changes shape; the loader's entry-not-found/name-mismatch warnings and [`dsh --dump-config`](2026-07-30-dsh-dump-config.md) (which prints the composed tree those patches produce) are the diagnostics. - Personal patches resolve ids against the booted file's own tree, so nested-include overlays (Code Mode) are not personalized; live-run parity for those leaves is deferred. -- `dsh-app-boot` depends on `js-yaml` (plus a load-only copy of the include's `!!js` YAML type) and, like `apps/cli`, on `@deepseek-ai/dsh-paths` for `resolveDshHome`. +- `dsh-app-boot` depends on `js-yaml` and imports the include's `!!js` YAML dialect (`entryListSchema`) directly, and, like `apps/cli`, depends on `@deepseek-ai/dsh-paths` for `resolveDshHome`. - When PR #443 lands, `apps/cli/src/bin.ts`'s dispatch chain and `apps/cli/package.json`'s dependency list conflict textually; both resolve as unions (their `web`/`-p` branches plus our default-TUI branch). ## Testing diff --git a/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.zh.md b/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.zh.md index 172d84b075..8f7c15c3c6 100644 --- a/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.zh.md +++ b/.agents/notes/implemented/feature/2026-07-20-dsh-cli-personal-config.zh.md @@ -39,9 +39,9 @@ PTY 冒烟测试的启动器把 `$DSH_HOME` 隔离到每个测试自己的目录 ## Consequences - 在任意目录运行 `dsh`（以及 `pnpm run demo:tui`）即可零仓库改动地使用个人提供方/模型；已针对个人 Anthropic 代理与 Opus 4.8 端到端验证，包括一次 bash 工具往返。 -- 由于按 id 定位的补丁替换整个 `config`，个人覆盖必须复述它保留的基础字段，并可能随基础配置项形态变化而漂移；loader 的「配置项未找到/名称不匹配」警告是仅有的诊断。 +- 由于按 id 定位的补丁替换整个 `config`，个人覆盖必须复述它保留的基础字段，并可能随基础配置项形态变化而漂移；诊断手段是 loader 的「配置项未找到/名称不匹配」警告和 [`dsh --dump-config`](2026-07-30-dsh-dump-config.md)（打印这些补丁合成出的配置树）。 - 个人补丁只在被启动文件自身的树里解析 id，因此嵌套 include 的 overlay（Code Mode）不会被个性化；这些叶子的实际运行等价性暂缓。 -- `dsh-app-boot` 依赖 `js-yaml`（外加一份只用于加载的 include `!!js` YAML 类型副本），并与 `apps/cli` 一样依赖 `@deepseek-ai/dsh-paths` 以获取 `resolveDshHome`。 +- `dsh-app-boot` 依赖 `js-yaml`，并直接导入 include 的 `!!js` YAML 方言（`entryListSchema`）；与 `apps/cli` 一样依赖 `@deepseek-ai/dsh-paths` 以获取 `resolveDshHome`。 - PR #443 落地时，`apps/cli/src/bin.ts` 的分发链与 `apps/cli/package.json` 的依赖列表会产生文本冲突；两者都按并集解决（他们的 `web`/`-p` 分支加上我们的默认 TUI 分支）。 ## Testing diff --git a/.agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.i18n.yaml b/.agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.i18n.yaml new file mode 100644 index 0000000000..9e267e82a0 --- /dev/null +++ b/.agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.i18n.yaml @@ -0,0 +1,6 @@ +# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each +# side as of the last confirmed-consistent state. Both languages carry equal authority; +# after editing either side, bring the other along and re-record with: +# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.md +2026-07-30-current-sandbox-policy-context.md: 093f9a8a0b58256bb4f2301cc62fa83629de4fbd +2026-07-30-current-sandbox-policy-context.zh.md: 729ea9d50c7dbbfa027e1cad11929ae1c2b379b1 diff --git a/.agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.md b/.agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.md new file mode 100644 index 0000000000..093f9a8a0b --- /dev/null +++ b/.agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.md @@ -0,0 +1,63 @@ +# Agent Note: Current sandbox policy context + +Status: implemented + +English | [中文](2026-07-30-current-sandbox-policy-context.zh.md) + +## Problem + +The sandbox policy already enforced and logged each session's file-effect mode, but a fresh model request did not contain that state. In a Web session under `read-only`, write and edit schemas remained visible, so the model claimed it could write and learned otherwise only after a denied call. After `/permission danger-full-access`, the next request carried the approval-policy change but still omitted the sandbox mode. Denial results were therefore the first model-visible policy source even when the user asked about capability before any operation. + +## Decision + +`dsh-sandbox-policy`, the owner of mode and workspace-root resolution, registers one `sandbox:policy` cache-safe context contribution. Every agent request resolves the active session directly through `ctx.sandboxPolicy.resolve({ session })`; there is no denial-history scan or process-local “last told” state. + +The policy contribution is capability-neutral and present for every agent session. It does not maintain a second inventory of mounted backends or tools; model-visible schemas remain the authority for available operations, while the context conditions its claims on any available operation that the DSH file sandbox enforces. The [capability-neutral policy context decision](../simplification/2026-07-31-capability-neutral-sandbox-policy-context.md) supersedes the earlier family-registration mechanism while retaining this note's cache-safe delivery and durable snapshot design. + +The contribution states only facts shared by every enforcement dialect. `read-only` says an available sandbox-enforced operation cannot modify files in the standing mode and directs the model to try an available tool normally, then follow any denial and escalation guidance that tool returns. `workspace-write` states the canonical session workspace with non-exclusive wording and summarizes, without enumerating, that some platform temporary areas may also be writable. `danger-full-access` says the DSH file sandbox does not restrict file modifications by available operations. Backend-selected temporary paths, `/dev/null`, runner readiness, exact tool availability, and other policy domains are absent because `resolve()` cannot establish them at request assembly. + +The existing `dsh-system-prompt` assembly now has ordered dynamic contexts alongside stable system sections and tool schemas. After assembling one step, agent-loop renders all active contexts as one full snapshot with an explicit supersession statement. It appends a sourced `user/message` only when no retained snapshot exists, the bytes changed, compaction removed the retained message, or the final contribution disappeared and needs one clearing snapshot. The snapshot is appended after existing history and before `step/start`, so a changed policy preserves the preceding system-and-conversation cache prefix. The session event itself reconstructs the exact model input; `request/header` remains byte-identical when only policy context changes. + +Ownership stays narrow. Approval policy contributes its complete current `ask` or `never` fact to the same full snapshot; migrating sandbox alone would not preserve cache because `/permission` changes both owners. Plan mode remains `plan:policy`, and tool plugins continue to own schemas plus attempt, denial, and escalation guidance. Context states standing policy; filesystem, one-shot bash, and terminal backends remain the enforcement boundaries. + +The cache decision follows current source rather than analogy alone. Codex models permissions as a developer-role `WorldState` section with a persisted fingerprint, emits it only when state changes or retained history lost the fragment, and records the snapshot transition. Hermes keeps its system prompt fixed for a session and explicitly prepends changing skill, model, and voice notices to the next user message to avoid invalidating prompt cache. Pi has no comparable built-in sandbox state, and Claude Code's current native implementation is not publicly inspectable; Anthropic's public cache guidance nevertheless places changing per-request context after the stable cached prefix. + +The earlier real-provider Web fixture quantified the defect in the system-section version. The first `danger-full-access` and `workspace-write` requests each reported only 256 cache-read tokens against 14,691 and 14,782 uncached input tokens. Later steps under an unchanged policy reported approximately 14.7k–15.5k cache-read tokens. Moving only the sandbox sentence would not fix those misses because the same preset switch also rewrote the approval-policy system section. + +## Wording evidence + +The wording experiment pre-registered preemptive refusal as its primary endpoint and required the old standing sentence to produce at least one refusal in twelve fresh sessions before any replacement could be judged. On 2026-07-30, commit `2bf41990401b194bd8637f07bbd90c67a9eeac75` ran `deepseek-v4-flash` through the shipped Web composition with the exact positive-control sentence `Bash commands run under the "read-only" file sandbox.` and the current tool-owned attempt guidance. The control produced zero preemptive refusals and zero speculative escalations; all twelve sessions made an ordinary bash call, observed a denial, escalated in the same turn, received approval, and landed the requested file. No sample was excluded. + +After the cache-safe delivery change, commit `10d4e0ff7b68d38fc4403403b644aac442b97a00` repeated the same twelve-session positive control through the new tail-context channel. It again produced zero preemptive refusals and zero speculative escalations; all twelve sessions made an ordinary first call, observed denial, escalated in the same turn, and received approval. Eight landed the exact requested file, and no sample was excluded. + +Both positive controls therefore failed the pre-registered sensitivity gate. The formal twelve-session Candidate A and B arms were not run, and these experiments do not select or validate the current wording. They establish that the earlier five-of-twelve result is not reproducible under this task and current tool guidance, and that a stronger positive control or different task distribution is required before making model-behavior rate claims. Deterministic tests below establish truthful request construction and replay only. + +The cache-safe delivery rework then supplied a separate, non-statistical acceptance comparison over the neutral Web task `Create the relative path policy-neutral.txt ...`; it does not replace the pre-registered twelve-session experiment. Candidate A's categorical read-only statement produced a text refusal with zero tool calls. Candidate B added one composition-conditioned sentence only for enforced families whose tools expose escalation. A fresh real-provider run then issued an ordinary `write`, observed the read-only denial, retried the same operation in the same turn with `sandbox_permissions: "workspace-write"`, received approval, read the file back, and verified the exact contents. It made no speculative escalation. Across the permission switches and four mutation steps, cache reads were 14,848–15,872 tokens while uncached input was 59–306 tokens per request, directly demonstrating the stable-prefix benefit. + +## Alternatives considered + +**Narrate only mode changes.** Rejected because it leaves a fresh session uninformed and makes the first denied operation the policy-discovery mechanism. It also requires a baseline definition that is unnecessary when current state can be rendered directly. + +**Scan denial history or remember the last narrated mode.** Rejected because denial events describe attempted operations, not authoritative current state, while process-local bookkeeping does not survive resume. The owner can fold the durable policy directly on every request. + +**Put current policy in a dynamic system section.** Rejected after real provider evidence showed that a first-time permission switch reduced cache reads to 256 tokens while roughly 14.7k input tokens missed. DeepSeek matches complete prefixes; changing the first wire message prevents reuse of the longer system-plus-history prefix. + +**Call `agent.inject()` independently from each policy owner.** Rejected because sibling listener order would define model order, separate messages could expose mismatched intermediate snapshots, and every owner would need its own compaction-retention scan. The existing assembly owner can order contributions and materialize one atomic full snapshot. + +**A generic runtime-facts package.** Rejected because the existing system-prompt assembly already owns sections, schemas, variables, scope, and the authoritative per-step waterfall. Extending that owner with ordered contexts adds no package or second registry service. + +**Repeat tool schemas or plan guidance in the context.** Rejected because those surfaces already have owners and independent lifecycles. Approval current state joins the snapshot only because the same `/permission` switch changes it and leaving its system section would retain the cache defect. + +**Keep Candidate A after the cache-safe move.** Rejected by the neutral real-provider task: the model returned a pure text refusal and made no tool call despite the existing bash attempt guidance. The surviving anti-refusal principle states no escalation mechanics itself; it tells the model not to infer impossibility from the standing label, then delegates denial and escalation behavior back to the available tool. + +**Keep sandbox mode absent because a standing mode label once caused preemptive refusal.** Rejected because a fresh Web request otherwise exposes mutation tools while withholding their standing policy, producing false capability claims before the first operation. The earlier live measurement remains a required counter-test: five of twelve turns ended without a tool call under `Bash commands run under the "read-only" file sandbox.` The committed tool-owned attempt guidance postdates that measurement, so the replacement is selected through a new positive-control experiment under the current tool contract rather than assuming the old and current conditions match. + +**A separate model-context package.** Rejected because the policy owner can resolve current session state directly and the existing assembly service can order it. A new package would add a shallow composition seam and documentation/gate surface around the same request boundary. + +**Enumerate writable temporary roots.** Rejected because the backend is selected later at `confine()`: bwrap, Landlock, Seatbelt, and the in-process filesystem fence do not grant one common temporary-path set. Host-specific paths in a standing request would be both unstable and overclaimed. + +## Consequences + +A model receives the standing file policy before probing a tool, and the next request after `/permission` reflects the committed mode. The stable system prompt no longer changes for sandbox or approval state; a changed full context snapshot is append-only after retained history, and unchanged state adds no message. Older snapshots remain in history but are explicitly superseded by the latest full snapshot. The statement is guidance, not an enforcement guard: runtime safety still comes from filesystem, one-shot bash, and terminal backends consuming the same resolved policy. + +Focused tests pin all modes, canonical roots, switch timing, service disposal, context ordering, clearing, stable request headers, resume, and byte stability across different `TMPDIR` values. Keyless assembled snapshots pin the durable context message through real Loader compositions. Keyless replay owns the neutral denial-to-escalation trajectory; it is a structural regression proof, not wording-selection evidence. diff --git a/.agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.zh.md b/.agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.zh.md new file mode 100644 index 0000000000..729ea9d50c --- /dev/null +++ b/.agents/notes/implemented/feature/2026-07-30-current-sandbox-policy-context.zh.md @@ -0,0 +1,63 @@ +# Agent Note: 当前沙箱策略上下文 + +Status: implemented + +[English](2026-07-30-current-sandbox-policy-context.md) | 中文 + +## 问题 + +沙箱策略已经强制执行并记录每个会话的文件操作模式，但新的模型请求并不包含这一状态。在 `read-only` 下的 Web 会话中，write 与 edit schema 仍然可见，因此模型会声称自己能够写入，直到一次被拒绝的调用后才发现事实并非如此。执行 `/permission danger-full-access` 后，下一个请求带有批准策略变更，却仍省略沙箱模式。因此，即使用户在任何操作前询问能力，拒绝结果也是模型可见的首个策略来源。 + +## 决策 + +`dsh-sandbox-policy` 负责解析模式与工作区根目录，并注册一项缓存安全的 `sandbox:policy` 上下文贡献。每次 agent（智能体）请求都通过 `ctx.sandboxPolicy.resolve({ session })` 直接解析当前会话；不存在拒绝历史扫描或进程本地的「上次告知」状态。 + +该策略贡献不依赖具体能力，并存在于每个 agent 会话中。它不会另行维护一份已挂载后端或工具清单；模型可见的 schema 仍是可用操作的权威来源，而上下文会将其声明限定在 DSH 文件沙箱所强制执行的任何可用操作上。[不依赖具体能力的策略上下文决策](../simplification/2026-07-31-capability-neutral-sandbox-policy-context.md)取代了较早的家族注册机制，同时保留本 Agent Note 的缓存安全交付与持久快照设计。 + +该贡献只说明所有强制执行方言所共有的事实。`read-only` 表明受沙箱强制执行的可用操作在常驻模式下无法修改文件，并指示模型正常尝试可用工具，随后遵循该工具返回的任何拒绝与升权引导。`workspace-write` 用非排他措辞说明规范化的会话工作区，并概述某些平台临时区域可能也可写，而不逐一列举。`danger-full-access` 表明 DSH 文件沙箱不会限制可用操作修改文件。后端选择的临时路径、`/dev/null`、runner 就绪状态、确切的工具可用情况和其他策略领域都不会出现，因为 `resolve()` 无法在请求组装时确定它们。 + +现有 `dsh-system-prompt` 组装在稳定系统段与工具 schema 之外，还包含有序的动态上下文。组装一个步骤后，agent loop（智能体循环）会将所有活动上下文渲染成一份带显式取代声明的完整快照。仅当不存在保留快照、字节发生变化、压缩（compaction）移除了保留消息，或最后一项贡献消失而需要一份清除快照时，它才会追加一条带来源的 `user/message`。快照追加在现有历史之后、`step/start` 之前，因此策略变化时仍会保留此前的系统与对话缓存前缀。会话事件本身可以重建确切的模型输入；只有策略上下文变化时，`request/header` 仍逐字节相同。 + +归属范围保持收敛。批准策略会将其完整的当前 `ask` 或 `never` 事实贡献给同一份完整快照；只迁移沙箱无法保留缓存，因为 `/permission` 会同时改变两方。计划模式仍由 `plan:policy` 负责，工具插件也继续负责各自的 schema，以及尝试、拒绝与升级引导。上下文负责说明常驻策略；文件系统、一次性 bash 与终端后端仍是强制执行边界。 + +缓存决策依据当前源码，而不只依靠类比。Codex 将权限建模为 developer 角色的 `WorldState` 段并保存其指纹；只有状态变化或保留的历史丢失该片段时才发出它，同时记录快照转换。Hermes 在会话期间保持系统提示词不变，并明确将不断变化的 skill（技能）、模型与语音通知前置到下一条用户消息，以免提示词缓存失效。Pi 没有可比的内置沙箱状态，Claude Code 当前的原生实现也无法公开检视；不过，Anthropic 的公开缓存指南仍将不断变化的逐请求上下文放在稳定缓存前缀之后。 + +先前接入真实提供方的 Web fixture（测试前置数据）量化了系统段版本的缺陷。首次 `danger-full-access` 和 `workspace-write` 请求分别只有 256 个缓存读取 token，而未缓存输入 token 为 14,691 和 14,782 个。相同策略下的后续步骤报告约 14.7k–15.5k 个缓存读取 token。只移动沙箱语句无法修复这些未命中，因为同一次 preset 切换还会改写批准策略系统段。 + +## 措辞证据 + +措辞实验预先登记「预防性拒绝」为主要终点，并要求旧常驻句子在十二个 fresh session 中至少产生一次拒绝，之后才能评判任何替代措辞。2026-07-30，commit `2bf41990401b194bd8637f07bbd90c67a9eeac75` 通过已交付的 Web 组合运行 `deepseek-v4-flash`，使用精确的阳性对照句子 `Bash commands run under the "read-only" file sandbox.` 与当前工具归属方的尝试引导。对照组产生零次预防性拒绝和零次推测性升级；十二个会话全部先发起普通 bash 调用、观察到拒绝、在同一轮次升级、获得批准，并让所请求文件实际落盘。没有样本被排除。 + +缓存安全交付变更后，commit `10d4e0ff7b68d38fc4403403b644aac442b97a00` 通过新的尾部上下文通道重复了同一项十二会话阳性对照。结果再次为零次预防性拒绝和零次推测性升权；十二个会话的首次调用均为普通调用，随后观察到拒绝、在同一轮次升权并获得批准。其中八个会话让所请求文件按确切要求落盘，没有样本被排除。 + +因此，两项阳性对照均未通过预先登记的灵敏度门槛。Candidate A 与 B 的正式十二会话实验组均未运行，这些实验不选择也不验证当前措辞。它们说明先前十二次中五次的结果无法在本任务与当前工具引导下复现；在声明模型行为率之前，需要更强的阳性对照或不同的任务分布。下述确定性测试只证明请求构造与回放真实一致。 + +随后，缓存安全交付重做针对中性 Web 任务 `Create the relative path policy-neutral.txt ...` 提供了一次独立的非统计验收对比；它不取代预先登记的十二会话实验。Candidate A 的绝对化只读声明导致模型以纯文本拒绝，工具调用为零。Candidate B 只针对受强制执行、且其工具公开升权能力的家族增加一句按组合条件化的文案。随后一次全新的真实提供方运行先发出普通 `write`，观察到只读拒绝，再在同一轮次用 `sandbox_permissions: "workspace-write"` 重试同一操作，获得批准、读回文件并核验确切内容。它没有进行推测性升权。在权限切换和四个变更步骤中，每个请求的缓存读取为 14,848–15,872 个 token，未缓存输入为 59–306 个 token，直接证明了稳定前缀的收益。 + +## 曾考虑的替代方案 + +**仅叙述模式变更。** 不予采用，因为这会让新会话不了解策略，并把首次被拒绝的操作变成策略发现机制。如果可以直接渲染当前状态，也就无需额外定义基线。 + +**扫描拒绝历史或记住上次叙述的模式。** 不予采用，因为拒绝事件描述的是尝试过的操作，而不是权威的当前状态；进程本地的簿记也无法跨恢复保留。归属方可以在每次请求时直接折叠持久策略。 + +**把当前策略放入动态系统段。** 不予采用，因为真实提供方证据显示，首次权限切换后缓存读取降至 256 个 token，而约 14.7k 个输入 token 未命中缓存。DeepSeek 匹配完整前缀；改变第一条 wire 消息会阻止复用更长的系统与历史前缀。 + +**由每个策略归属方独立调用 `agent.inject()`。** 不予采用，因为同级监听器的顺序会决定模型所见顺序，分开的消息可能暴露不匹配的中间快照，并且每个归属方都需要各自扫描压缩后的保留状态。现有组装归属方可以对贡献排序，并具体化一份原子化的完整快照。 + +**通用运行时事实包。** 不予采用，因为现有系统提示词组装已经拥有段、schema、变量、作用域和权威的逐步骤 waterfall（瀑布式事件）。为该归属方增加有序上下文，无需新增包或第二个注册表服务。 + +**在上下文中重复工具 schema 或计划引导。** 不予采用，因为这些接口已有各自归属方和独立生命周期。批准的当前状态加入快照，仅仅是因为同一个 `/permission` 切换会改变它，而把它留在系统段会保留缓存缺陷。 + +**缓存安全迁移后仍保留 Candidate A。** 不予采用，因为中性的真实提供方任务中，尽管已有 bash 尝试引导，模型仍以纯文本拒绝，且没有调用工具。保留下来的反预防性拒绝原则本身不说明任何升权机制；它告诉模型不要从常驻标签推断操作不可能完成，然后把拒绝与升权行为交还给可用工具。 + +**继续省略沙箱模式，因为常驻模式标签曾引发预防性拒绝。** 不予采用，因为新的 Web 请求否则会暴露变更工具，却隐去这些工具的常驻策略，导致模型在首次操作前错误声称自身能力。先前的线上测量仍是必须执行的反证测试：使用 `Bash commands run under the "read-only" file sandbox.` 时，十二个轮次中有五个没有调用工具。已提交的工具归属方尝试引导晚于该测量，因此应通过当前工具契约下的新阳性对照实验选择替代文案，而不能假设旧条件与当前条件相同。 + +**独立的模型上下文包。** 不予采用，因为策略归属方可以直接解析当前会话状态，现有组装服务也可以对其排序。新包只会围绕同一个请求边界引入浅层组合 seam 和额外的文档／门禁表面。 + +**枚举可写临时根目录。** 不予采用，因为后端要到稍后的 `confine()` 才会选定：bwrap、Landlock、Seatbelt 和进程内文件系统围栏并不授予一套共同的临时路径。常驻请求中的主机特定路径既不稳定，也会作出过度承诺。 + +## 后果 + +模型在试探工具前就会收到常驻文件策略，且 `/permission` 后的下一个请求会反映已提交的模式。稳定的系统提示词不再随沙箱或批准状态变化；变化后的完整上下文快照会在保留的历史之后仅追加，状态不变时不增加消息。较旧的快照仍保留在历史中，但最新的完整快照会明确取代它们。该声明是引导，而不是强制执行护栏：运行时安全仍来自文件系统、一次性 bash 与终端后端消费同一项解析完成的策略。 + +聚焦测试固定了所有模式、规范化根目录、切换时机、服务释放、上下文顺序、清除、稳定的请求 header、恢复，以及不同 `TMPDIR` 值下的字节稳定性。无密钥的组装快照通过真实 Loader 组合固定持久上下文消息。无密钥回放负责固定中性的拒绝到升级轨迹；它是结构回归证明，而不是措辞选型证据。 diff --git a/.agents/notes/implemented/feature/2026-07-30-dsh-dump-config.i18n.yaml b/.agents/notes/implemented/feature/2026-07-30-dsh-dump-config.i18n.yaml new file mode 100644 index 0000000000..0cd2549e55 --- /dev/null +++ b/.agents/notes/implemented/feature/2026-07-30-dsh-dump-config.i18n.yaml @@ -0,0 +1,6 @@ +# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each +# side as of the last confirmed-consistent state. Both languages carry equal authority; +# after editing either side, bring the other along and re-record with: +# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-30-dsh-dump-config.md +2026-07-30-dsh-dump-config.md: bc6504541c7868bad019a1bcd9f551435109e4c6 +2026-07-30-dsh-dump-config.zh.md: 5e173305a6cd03de3db4c763f26eeda6fba68ec7 diff --git a/.agents/notes/implemented/feature/2026-07-30-dsh-dump-config.md b/.agents/notes/implemented/feature/2026-07-30-dsh-dump-config.md new file mode 100644 index 0000000000..bc6504541c --- /dev/null +++ b/.agents/notes/implemented/feature/2026-07-30-dsh-dump-config.md @@ -0,0 +1,31 @@ +# Agent Note: dsh --dump-config prints the composed config tree + +Status: implemented + +English | [中文](2026-07-30-dsh-dump-config.zh.md) + +## Problem + +The booted tree is a composition the user never sees: the shipped base, a surface overlay, and the `--config` or personal `~/.dsh/config.yaml` overlay apply as sibling patch lists where each id-targeted patch replaces the row's whole `config` and an unmatched id only warns. Debugging a misbehaving personal overlay (a restated field dropped, a row id typo, a patch applying to the wrong surface) required mentally replaying the patch algorithm across three files. There was no way to see the effective tree or to diff it against the shipped defaults. + +## Decision + +`dsh --dump-config` and `dsh web --dump-config` print the composed entry list — base, surface overlay, then the `--config` or personal overlay, exactly the layers that surface's boot assembles — as YAML on stdout and exit without booting. `dsh --dump-default-config` / `dsh web --dump-default-config` stop at the surface overlay, so diffing the two outputs shows precisely what the user layer changes. + +The dump cannot drift from what boots because it shares the mounting code: the vendored include exports its patch algorithm as the pure `applyEntryPatches(data, patches, warn)` (the private `applyPatches` method now delegates to it) and its `!!js` YAML dialect as `entryListSchema`; `dsh-app-boot`'s `renderConfigDump()` composes labeled layers and renders through both, and `apps/cli/src/dump-config.ts` is a thin surface-selection wrapper. `!!js` expressions print verbatim and unevaluated — the dump shows composition, not one process's environment — and a patch whose target row is absent goes to stderr with its layer label, mirroring the Loader's boot-time warning. Launcher-owned boot-context values (session identity, web CLI-flag patches, the frontend dist path) are per-invocation facts outside the config tree and do not appear. The dump flags reject boot-only flags (`-p`, `--resume`, `--config-replace`) and each other, and `--dump-default-config` takes no `--config`. + +Each run of same-provenance rows is preceded by a `# ==` comment naming the file that contributed the rows and the layers that patched them (`# == base.cordis.yml, patched by tui.cordis.yml`), so the output shows which section comes from which file while remaining one loadable YAML document. Composition is one flattened `applyEntryPatches` call over all layers — boot's exact call shape, so even patch-visibility corner cases (a later layer targeting a group child that a plain `config` replacement introduced, invisible to the single-pass id index) compose identically; applying one call per layer would rebuild the index between layers and print a tree boot never mounts. Provenance is derived from single-call prefix snapshots (base + layers 1..k) diffed positionally: the patch algorithm only rewrites rows in place or appends, so a top-level index identifies one row across snapshots, and a layer counts as having patched a row when adding it changed that row (config replacement, disable, group insert). Patch lists are cloned per snapshot because `applyEntryPatches` pushes `insert` rows by reference from the patch list. + +`dsh-app-boot` previously duplicated the include's `!!js` YAML type for patch parsing; it now imports `entryListSchema`, so the dialect has one owner. + +## Alternatives considered + +**Boot the tree and dump `ctx.loader.entries()`.** Rejected: booting evaluates `!!js` expressions (leaking one machine's environment into the printed config), starts adapters and sessions as side effects, requires a TTY-independent teardown path, and is slow. The dump is for debugging composition, which is a pure function of the files. + +**Reimplement the patch merge in the CLI.** Rejected: a second implementation of `applyPatches` would silently drift from the vendored include — the exact failure mode the feature exists to debug. Exporting the include's own algorithm costs one logged vendor modification and guarantees identity. + +**A `/dump-config` TUI command instead of flags.** Rejected as the only form: the primary use is a piped `dsh --dump-config | diff - <(dsh --dump-default-config)` style workflow, which needs a boot-free non-TTY surface. A TUI command can be added later over the same `renderConfigDump`. + +## Consequences + +Config debugging becomes one command instead of mental patch replay, and support can ask for `--dump-config` output. The vendored include carries one more logged local modification (the `applyEntryPatches`/`entryListSchema` exports; behavior-preserving for mounting) to re-apply on upstream sync. Provenance tracking re-composes one prefix snapshot per layer and diffs rows by JSON stringify, so the dump does extra work proportional to layers² × rows; that cost lives only in the boot-free dump path. `renderConfigDump` is unit-tested for layer ordering, verbatim `!!js` round-tripping, provenance separators and grouping, labeled unmatched-patch warnings, and loud read/parse/shape failures; the built-bin e2e drives all four flag forms through `lib/bin.js` including the personal-overlay layer, its provenance label, and its stderr warning. diff --git a/.agents/notes/implemented/feature/2026-07-30-dsh-dump-config.zh.md b/.agents/notes/implemented/feature/2026-07-30-dsh-dump-config.zh.md new file mode 100644 index 0000000000..5e173305a6 --- /dev/null +++ b/.agents/notes/implemented/feature/2026-07-30-dsh-dump-config.zh.md @@ -0,0 +1,31 @@ +# Agent Note: dsh --dump-config 打印合成后的配置树 + +Status: implemented + +[English](2026-07-30-dsh-dump-config.md) | 中文 + +## Problem + +启动的配置树是一份用户从未见过的合成结果：已交付的基础配置、界面覆盖层，以及 `--config` 或个人 `~/.dsh/config.yaml` 覆盖层作为同级补丁列表依次应用，其中每个按 id 定向的补丁替换目标行的整个 `config`，未匹配的 id 只产生警告。调试一个行为异常的个人覆盖层（漏掉需要重述的字段、行 id 拼错、补丁应用到了错误的界面）需要在脑中跨三个文件重放补丁算法。既没有办法看到生效的树，也没有办法把它与已交付的默认值做 diff。 + +## Decision + +`dsh --dump-config` 和 `dsh web --dump-config` 把合成后的条目列表——基础配置、界面覆盖层、再叠 `--config` 或个人覆盖层，恰好是该界面启动时组装的那些层——以 YAML 打印到 stdout 后退出，不启动任何东西。`dsh --dump-default-config` / `dsh web --dump-default-config` 止步于界面覆盖层，因此对两份输出做 diff 就能精确看出用户层改了什么。 + +dump 不可能与实际启动漂移，因为它复用挂载代码：vendored include 把补丁算法导出为纯函数 `applyEntryPatches(data, patches, warn)`（私有的 `applyPatches` 方法现在委托给它），并把 `!!js` YAML 方言导出为 `entryListSchema`；`dsh-app-boot` 的 `renderConfigDump()` 通过这两者对带标签的层完成合成与渲染，`apps/cli/src/dump-config.ts` 只是选择界面的薄封装。`!!js` 表达式原样打印、不求值——dump 展示的是合成结果，不是某个进程的环境——目标行不存在的补丁会连同其层标签报到 stderr，与 Loader 启动时的警告一致。由启动器持有的启动上下文值（会话身份、web 的 CLI 标志补丁、前端 dist 路径）是每次调用的事实，位于配置树之外，不会出现。dump 标志拒绝仅用于启动的标志（`-p`、`--resume`、`--config-replace`）且两个 dump 标志互斥，`--dump-default-config` 不接受 `--config`。 + +每段来源相同的连续行之前都有一条 `# ==` 注释，标明贡献这些行的文件以及修补过它们的层（`# == base.cordis.yml, patched by tui.cordis.yml`），因此输出既展示每一节来自哪个文件，又仍是一份可加载的 YAML 文档。合成是对所有层展平后的一次 `applyEntryPatches` 调用——与启动的调用形状完全一致，因此即便是补丁可见性的边角情况（后一层定位到前一层通过普通 `config` 替换引入的组内子项，而单遍 id 索引看不到它）也与启动合成完全相同；若按层各调用一次，会在层与层之间重建索引，打印出一棵启动从不挂载的树。来源从单次调用的前缀快照（基础 + 第 1..k 层）按位置 diff 得出：补丁算法只会原地改写行或在末尾追加，因此顶层索引在各快照之间标识同一行；加入某层后该行发生变化（替换 config、禁用、组内插入）即视为该层修补了这一行。每个快照都会克隆补丁列表，因为 `applyEntryPatches` 会把 `insert` 行按引用从补丁列表推入结果。 + +`dsh-app-boot` 之前为解析补丁复制了 include 的 `!!js` YAML 类型；现在改为导入 `entryListSchema`，方言只有一个归属者。 + +## Alternatives considered + +**启动整棵树后 dump `ctx.loader.entries()`。** 拒绝：启动会求值 `!!js` 表达式（把某台机器的环境泄漏进打印的配置）、以副作用启动适配器和会话、需要独立于 TTY 的拆卸路径，而且慢。dump 是用来调试合成的，而合成是那些文件的纯函数。 + +**在 CLI 里重新实现补丁合并。** 拒绝：`applyPatches` 的第二个实现会与 vendored include 悄然漂移——这恰恰是该功能要调试的失败模式。导出 include 自己的算法只花费一条记录在案的 vendor 修改，却保证了同一性。 + +**用 `/dump-config` TUI 命令代替标志。** 作为唯一形式被拒绝：主要用法是 `dsh --dump-config | diff - <(dsh --dump-default-config)` 这类管道工作流，需要免启动、非 TTY 的界面。之后可以在同一个 `renderConfigDump` 之上再加 TUI 命令。 + +## Consequences + +配置调试从脑中重放补丁变成一条命令，支持工作也可以直接索要 `--dump-config` 输出。vendored include 多出一条记录在案的本地修改（导出 `applyEntryPatches`/`entryListSchema`；对挂载行为无影响），上游同步时需重新应用。来源追踪为每层重新合成一次前缀快照并按 JSON stringify 对行做 diff，因此 dump 有与层数²×行数成正比的额外开销；该开销只存在于免启动的 dump 路径。`renderConfigDump` 的单元测试覆盖层叠顺序、`!!js` 原样往返、来源分隔与分组、带标签的未匹配补丁警告，以及读取／解析／形状失败的大声报错；built-bin e2e 通过 `lib/bin.js` 驱动全部四种标志形式，包括个人覆盖层、其来源标签及其 stderr 警告。 diff --git a/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.i18n.yaml b/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.i18n.yaml index cdf0c3a817..579586f30a 100644 --- a/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.i18n.yaml +++ b/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.i18n.yaml @@ -2,5 +2,5 @@ # side as of the last confirmed-consistent state. Both languages carry equal authority; # after editing either side, bring the other along and re-record with: # pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.md -2026-07-30-versioned-gui-welcome-onboarding.md: 0705469e02ddb9068722ae5d500c151f077c83fd -2026-07-30-versioned-gui-welcome-onboarding.zh.md: bdd21d635f824b8c4a4813e6bff7798b34ec9677 +2026-07-30-versioned-gui-welcome-onboarding.md: 8155838f3b6b50f3474ef6c30065ad0d79e6f8af +2026-07-30-versioned-gui-welcome-onboarding.zh.md: c221a6d663af60b03757f135045961bcbcdd0da7 diff --git a/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.md b/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.md index 0705469e02..8155838f3b 100644 --- a/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.md +++ b/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.md @@ -12,7 +12,7 @@ The GUI's credential onboarding begins with a DeepSeek-specific readiness check, **The Settings shell coordinates ordered steps.** `settings.onboarding` remains a root-scoped list, but `ui-settings` projects its entry ids and order into one coordinator and mounts only the first incomplete step. The active registrant receives `complete()` and `openSection(id)`; no later step mounts until ownership transfers. The product welcome registers at order `-100`, while `ui-models` retains only the conditional DeepSeek readiness and credential-routing step at order `0`. -**Ownerless product onboarding belongs to `ui-settings-general`.** `src/onboarding-copy.ts` is the single editable source for the complete Chinese notice, its faithful English counterpart, the Continue labels, and `WELCOME_NOTICE_VERSION`. Runtime locale dictionaries derive their welcome values from that file, and tests import the same owner instead of repeating paragraph text. The notice is browser UI only: it creates no Session event and contributes no model-visible content. +**Ownerless product onboarding belongs to `ui-settings-general`.** `src/onboarding-copy.ts` is the single editable source for the complete notice, the Continue label, and `WELCOME_NOTICE_VERSION`; both supported GUI locales intentionally render the same Chinese owner copy. Runtime locale dictionaries derive their welcome values from that file, and tests import the same owner instead of repeating paragraph text. The notice is browser UI only: it creates no Session event and contributes no model-visible content. The notice identifies `DSH_TELEMETRY_DISABLED=1` as the telemetry opt-out. **Acknowledgement is durable per Harness profile.** The Host half registers a `ui-onboarding` section in the user-settings seam, stored under the active `$DSH_HOME/settings.yaml`. The browser shows the notice unless `welcomeNoticeVersion` equals the owner constant exactly. Continue applies one path mutation with the current version and calls `complete()` only after the Host commits it; a failed write leaves the notice open, and closing the page or process writes nothing. Bumping the constant intentionally makes every profile acknowledge the revised copy once. diff --git a/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.zh.md b/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.zh.md index bdd21d635f..c221a6d663 100644 --- a/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.zh.md +++ b/.agents/notes/implemented/feature/2026-07-30-versioned-gui-welcome-onboarding.zh.md @@ -12,7 +12,7 @@ GUI 的凭据引导从 DeepSeek 专用的就绪状态检查开始，但内部测 **设置外壳协调有序步骤。** `settings.onboarding` 仍是根作用域 list，但 `ui-settings` 会把其中各条目的 id 和顺序投影到一个协调器中，并且只挂载第一个未完成的步骤。当前注册方会收到 `complete()` 和 `openSection(id)`；所有权转移前，不会挂载后续步骤。产品欢迎步骤的顺序为 `-100`，`ui-models` 则只保留顺序为 `0` 的 DeepSeek 条件式就绪状态与凭据跳转步骤。 -**不属于单一功能的产品引导由 `ui-settings-general` 持有。** `src/onboarding-copy.ts` 是完整中文通知、忠实英文对侧文案、两种语言的「继续」按钮文案和 `WELCOME_NOTICE_VERSION` 的唯一可编辑来源。运行时 locale 字典从该文件派生欢迎文案，测试也导入同一个所有者，而不重复段落文本。该通知只存在于浏览器 UI：它不会创建会话事件，也不会贡献任何模型可见内容。 +**不属于单一功能的产品引导由 `ui-settings-general` 持有。** `src/onboarding-copy.ts` 是完整通知、「继续」按钮文案和 `WELCOME_NOTICE_VERSION` 的唯一可编辑来源；GUI 支持的两种 locale 都有意渲染同一份中文所有者文案。运行时 locale 字典从该文件派生欢迎文案，测试也导入同一个所有者，而不重复段落文本。该通知只存在于浏览器 UI：它不会创建会话事件，也不会贡献任何模型可见内容。通知明确以 `DSH_TELEMETRY_DISABLED=1` 作为遥测关闭方式。 **确认状态按 Harness profile 持久化。** 宿主端在 user-settings seam 中注册 `ui-onboarding` 分节，并存入当前 `$DSH_HOME/settings.yaml`。除非 `welcomeNoticeVersion` 与文案所有者文件中的常量精确相等，否则浏览器会显示通知。「继续」会以当前版本执行一次路径变更，并且仅在宿主端提交成功后调用 `complete()`；写入失败时通知保持打开，关闭页面或进程则不会写入任何内容。提升该常量会有意要求每个 profile 对修订后的文案重新确认一次。 diff --git a/.agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.i18n.yaml b/.agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.i18n.yaml new file mode 100644 index 0000000000..7efb9e75d5 --- /dev/null +++ b/.agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.i18n.yaml @@ -0,0 +1,6 @@ +# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each +# side as of the last confirmed-consistent state. Both languages carry equal authority; +# after editing either side, bring the other along and re-record with: +# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.md +2026-07-30-web-read-card-frontend.md: f504cab7705d03f6d3e911da05c509da50bb9abe +2026-07-30-web-read-card-frontend.zh.md: b6314f21ba3eb2283788374b10c77ed22e26d16c diff --git a/.agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.md b/.agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.md new file mode 100644 index 0000000000..f504cab770 --- /dev/null +++ b/.agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.md @@ -0,0 +1,54 @@ +# Agent Note: Web read card frontend — the read tool's line window renders line-numbered and highlighted + +Status: implemented + +English | [中文](2026-07-30-web-read-card-frontend.zh.md) + +## Problem + +The [read backend](2026-07-30-web-read-card.md) added a fourth render-intent card, `card: 'read'`, to `ToolResultView`: a settled read now carries `{ path, lines: [{ number, text }], totalLines, lang? }` onto the conversation snapshot as `resultView`. That data reaches the browser, but the Web client had no consumer for it. Every read row derived from args alone and the details panel flattened the result's content blocks into one `
`, so a read showed as `N: text`-prefixed plain text with no gutter, no syntax highlighting, and no "showing N of M" affordance for a windowed read. The [web terminal card](2026-07-28-web-terminal-card.md) established the pattern for consuming a structured card; the read card follows it, result-side only.
+
+## Decision
+
+`ReadBlock` is a `ui-primitives` component that renders a read result as a line-numbered, optionally syntax-highlighted file view, and both Web render sites for a read consume the read render intent through it: the chat tool row (resident under the summary line) and the details panel's Output section. `ui-conversation/src/client/contract/read-card-model.ts` is the single place that turns the snapshot's `resultView` into the component's props, so the two sites cannot disagree.
+
+**A new `ReadBlock` primitive, not an extension of `CodeBlock`.** `CodeBlock` already does shiki highlighting with a language banner and a copy control, but a read view needs a per-line gutter carrying each line's own file number, which `CodeBlock` renders as a single `
` tree with no per-line structure. Extending `CodeBlock` with an optional gutter would push a read-specific concern (windowed line numbers, a "showing N of M" note, a height cap) onto every markdown fence and every `run_code` body that shares that component. Instead `ReadBlock` reuses the part that is genuinely shared: the shiki grammar singleton in `markdown/highlight.ts`. A new `highlightLines(code, lang)` there tokenizes into shiki's own per-line token arrays (`codeToTokens`) rather than the single-`
` HTML `highlightToHtml` produces, so the block can place one gutter number per line and still color the content through the same `--shiki-*` custom properties on the same grammar allowlist. The height cap and its head/tail expand arithmetic are copied from `TerminalBlock` (`ceil(max/2)` head plus the remaining tail), so a long read and a long command output collapse at the same place. The copy control writes the window's raw text (the lines joined by newlines), never the gutter numbers or the banner.
+
+`readCardModel` is result-side only, mirroring the backend: a read call carries no content until `execute` returns, so the pending call stays a `GenericCallView` (`kind: 'read'`) and this returns null for a running read — the row keeps its args-derived summary until the result arrives. It also returns null for a settled call whose result view is not a read card, including a `card` value this UI version does not know (which arrives over the wire and cannot be trusted to be a compiled variant) and the read tool's own generic fallback for an error result. The card's banner label is the read view's `title` when the tool supplied one (the contract's replacement-title rule), otherwise the file path relativized to the session workspace so a workspace-rooted absolute path shows the same short form the row summary shows. The model copies the frozen line array into the primitive's own line shape, so the card never holds a reference into the runtime's snapshot cache.
+
+The chat row renders the card **resident** under the summary line, capped at `CHAT_READ_MAX_LINES` (8, half the primitive's default), the same posture `BashRow` gives a terminal card — the block's internal expander keeps a long read from taking over the message flow. Two render sites carry it: the keyed `ReadRow` (registered under `read` in `apply.ts`, the load-order seam being `inject: ['slots', 'conversation']` exactly as the bash sample) whose summary is the file path as an openable host link, and `GenericToolCard`'s fallback for a read-declaring tool without its own keyed row (e.g. `web_fetch`, which classifies to the `read` variant). The details panel renders the same card at the primitive's own full-height cap (16), because the panel is the single-call reading surface.
+
+Whole-row collapse/expand (defaulting every tool call to collapsed) is a separate later change that will flip every resident card at once; this note's card is resident, matching the terminal card it sits beside.
+
+**Read-card grammars load lazily; only the boot three stay eager.** `highlight.ts` is a platform seed `ui-primitives` loads on every Web boot, and its warm-up unconditionally builds the shiki singleton. The read card's `langFromPath` hints span the full source/config/markup extension set (python, rust, yaml, html, …); registering all of them eagerly would add ~1.6 MB of grammar modules to the boot chunk and their synchronous init to every session, including sessions that never open a read card. So only the three grammars every session already renders — TypeScript, shell, JSON (the markdown-fence and `run_code` languages) — load at boot. Each read-card extension grammar sits behind a dynamic `import()` in `LAZY_GRAMMARS`, keyed by the grammar id its aliases resolve to. On the first `highlightLines`/`highlightToHtml` call for a lazy language, `ensureGrammar` starts the import (once) and returns not-ready, so the card renders plain that frame; when the import resolves it registers the grammar with `loadLanguageSync`, bumps a load counter, and notifies subscribers. `ReadBlock` and `CodeBlock` subscribe through `useSyncExternalStore(subscribeGrammarLoaded, grammarLoadCount)`, so the card re-renders with highlighting the moment the grammar is ready. An unknown/absent language still returns undefined synchronously (plain, never an error).
+
+**The empty-window copy control is hidden, matching `TerminalBlock`.** A successful read of an empty file returns `lines: []`, `totalLines: 0`, and `presentResult` still projects `card: 'read'`, so the empty-window branch is reachable — the read card is not, as an earlier draft assumed, unreachable for an empty result. `ReadBlock` therefore hides the copy control when `lines` is empty, exactly as `TerminalBlock` hides copy on empty output, so the button can never wipe the clipboard with an empty string.
+
+## Alternatives considered
+
+**Extend `CodeBlock` with an optional line-number gutter and `startLine`.** Rejected: it imposes a read-specific gutter, a windowed-count note, and a height cap on every markdown fence and `run_code` body that shares `CodeBlock`, for no benefit to those callers. The genuinely shared surface is the shiki grammar singleton, which both blocks reuse through `highlight.ts`; the chrome around it differs (a read has a gutter and a window note, a fence has neither), so a second small primitive is the correct split, exactly as `TerminalBlock` is a second primitive over the same tokens rather than a `CodeBlock` mode.
+
+**Reuse `highlightToHtml` and inject gutter numbers with CSS counters.** Rejected: the single-`
` HTML shiki emits has no per-line boundary a gutter can hang a file line number off (a windowed read's numbers start above 1 and are not a simple CSS counter increment), and parsing the numbers back out of the HTML would be fragile. `codeToTokens` gives the per-line token structure directly.
+
+**Register all read-card grammars eagerly in the boot warm-up.** Rejected: it puts ~1.6 MB of grammar modules and their synchronous init on every Web boot for a card most sessions never open. The lazy path costs a single plain-first frame the first time a given language is read, then highlights on the grammar-load re-render; the boot cost is paid only for the three grammars every session already renders.
+
+## Consequences
+
+`ui-primitives` gains `ReadBlock` and `highlightLines`; no new runtime dependency (shiki was already present for `CodeBlock`). `ReadBlock` reads only the read view's fields, so it stays a pure function of what the render intent carries — no session lookups, replay-safe like the presenters that produce the view. A UI without the read capability still gets the backend's `content` fallback (the envelope-stripped text) through the generic card, unchanged.
+
+A read row in the Web chat now carries the file content resident, a deliberate density increase over a summary-only row, bounded by the chat cap. A `run_code` sub-dispatch does not reach a read card on the shipped wire for the same reason a nested bash call does not reach a terminal card: `session.ts` folds `tool/code-dispatch(-start)` with `resultView: null`, so a nested read keeps the generic flattened form.
+
+## Testing
+
+`packages/client/ui-primitives/tests/read-block.spec.tsx` pins the primitive and the token path: `highlightLines`' per-line css-variables runs, its trailing-terminator-line drop and the genuinely-blank-final-line case, its `undefined` for an unknown/absent language, and its lazy path (a lazy grammar returns plain on first touch, then highlights after the import registers and the subscriber fires); and `ReadBlock`'s gutter-numbered rows keeping the file's own numbers, the highlighted-vs-plain content arms, the banner (label, language, the count note only when the read is a window), the head/tail height cap with its `aria-expanded` toggle, the copy control writing the window's raw text on both the accepted and refused clipboard paths, and the empty-window arm hiding the copy control. `code-block.spec.tsx` covers `highlightToHtml` including its lazy path over every read-card grammar (each dynamic import thunk touched once). Both `ReadBlock.tsx` and `highlight.ts` (and `CodeBlock.tsx`) hold per-file 100% coverage across the two specs.
+
+`packages/client/ui-conversation/tests/read-card.spec.tsx` pins the wiring at every render site: `readCardModel`'s derivation and each null arm (running read, no view, generic view, unknown card), the result title replacing the relativized path, the path relativization against the workspace, the copy-not-alias of the frozen line array; the resident card in `GenericToolCard`'s fallback and in the keyed `ReadRow` (plus its path link opening the host, its running/error/stopped states, and its `read`-key registration); and the panel's Output section rendering the read card at full height while keeping the JSON Input section, with the running-read placeholder and non-read flattened-pre arms. That file sits on the coverage `exclude` list (`ui-conversation/src/*`), so it is written against no gate pressure.
+
+The fixture (`packages/client/connection/src/client/fixture.ts`) gains turn 66, a `read` call whose result view is a windowed read (lines starting at file line 41, `totalLines` 180, a `ts` hint), so the built-boot snapshot and a live `?fixture` server show the read card with its gutter numbers, highlighting, and count note. It is named `read` to exercise the keyed `ReadRow`. The turn 64 `run_code` sample's nested read sub-dispatches do not exercise the render-site fallback read card: `session.ts` folds them with `resultView: null`, so they cover only the fallback row's generic row shape, not a read card inside it; the fallback-row read card is pinned by `read-card.spec.tsx`'s `web_fetch` case. Turn 66 is ordered before the todo turn (now 67) for the same reason the terminal sample is: the standing plan retires at the next `turn/start`.
+
+## Related
+
+- [Read card backend](2026-07-30-web-read-card.md) — adds the `card: 'read'` result view this consumes; produces the `lines`/`totalLines`/`lang` this renders.
+- [Web terminal card](2026-07-28-web-terminal-card.md) — the precedent this follows: a `ui-primitives` block, a `contract/*-card-model.ts` derivation, a keyed row, and making `GenericToolCard`/`DetailsPanel` card-aware.
+- [Web client syntax highlighting](../process/2026-07-26-web-syntax-highlighting-shiki.md) — owns `CodeBlock` and the shiki `highlight.ts` singleton this extends with a per-line token path.
+- [Tagged render-intent union for tool-call presentation](../architecture/2026-07-02-tool-render-intent-union.md) — the `card`-tagged vocabulary; the Web client is now a full consumer of the `read` arm.
diff --git a/.agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.zh.md b/.agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.zh.md
new file mode 100644
index 0000000000..b6314f21ba
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-web-read-card-frontend.zh.md
@@ -0,0 +1,54 @@
+# Agent Note: Web 读取卡片前端 —— 读取工具的行窗口以带行号、语法高亮的形式渲染
+
+Status: implemented
+
+[English](2026-07-30-web-read-card-frontend.md) | 中文
+
+## Problem
+
+[读取后端](2026-07-30-web-read-card.md)给 `ToolResultView` 增加了第四种渲染意图卡片 `card: 'read'`：一次已结算的读取现在会把 `{ path, lines: [{ number, text }], totalLines, lang? }` 作为 `resultView` 带到会话快照上。这份数据能到达浏览器，但 Web 客户端没有消费者。每个读取行都仅从参数派生，详情面板把结果的 content block 摊平进一个 `
`，于是读取显示为带 `N: text` 前缀的纯文本，没有行号栏、没有语法高亮，也没有窗口读取的"显示 N / M"提示。[web 终端卡片](2026-07-28-web-terminal-card.md)确立了消费一个结构化卡片的模式；读取卡片沿用它，只在结果侧。
+
+## Decision
+
+`ReadBlock` 是一个 `ui-primitives` 组件，把一次读取结果渲染成带行号、可选语法高亮的文件视图，读取的两个 Web 渲染点都通过它消费读取渲染意图：聊天工具行（常驻在摘要行之下）与详情面板的 Output 区段。`ui-conversation/src/client/contract/read-card-model.ts` 是把快照的 `resultView` 转成组件 props 的唯一位置，因此两个渲染点不会产生分歧。
+
+**新建一个 `ReadBlock` primitive，而不是扩展 `CodeBlock`。** `CodeBlock` 已经带语言横幅和复制控件做 shiki 高亮，但读取视图需要一个每行带该行自身文件行号的行号栏，而 `CodeBlock` 把内容渲染为单个 `
` 树、没有逐行结构。给 `CodeBlock` 加一个可选行号栏会把读取专属的关切（窗口行号、"显示 N / M"提示、高度上限）强加给共享该组件的每个 markdown 代码围栏和每个 `run_code` 程序体。`ReadBlock` 转而复用真正共享的部分：`markdown/highlight.ts` 里的 shiki 语法单例。那里新增的 `highlightLines(code, lang)` 把代码切成 shiki 自己的逐行 token 数组（`codeToTokens`），而不是 `highlightToHtml` 产出的单 `
` HTML，于是该 block 能每行放一个行号、同时用同一套 `--shiki-*` 自定义属性、同一份语法白名单给内容上色。高度上限及其头/尾展开算法照抄自 `TerminalBlock`（`ceil(max/2)` 行头部加剩余的尾部），因此长读取和长命令输出在同一处折叠。复制控件写入窗口的原始文本（各行以换行拼接），绝不含行号栏或横幅。
+
+`readCardModel` 只在结果侧，与后端对称：一次读取调用在 `execute` 返回前不带任何内容，因此挂起中的调用保持为 `GenericCallView`（`kind: 'read'`），本函数对运行中的读取返回 null —— 该行保持其从参数派生的摘要，直到结果到达。它对结果视图不是读取卡片的已结算调用也返回 null，包括本 UI 版本不认识的 `card` 值（它从线路到来、不能被信任为一个已编译的变体）以及读取工具对错误结果自己的通用回退。卡片横幅标签在工具提供 `title` 时取它（契约的替换标题规则），否则取相对于会话工作区化简后的文件路径，使工作区根下的绝对路径显示为与行摘要相同的短形式。该 model 把冻结的行数组复制进 primitive 自己的行形状，因此卡片绝不持有指向运行时快照缓存的引用。
+
+聊天行把卡片**常驻**渲染在摘要行之下，上限 `CHAT_READ_MAX_LINES`（8，是 primitive 默认值的一半），与 `BashRow` 对终端卡片的姿态相同 —— block 的内部展开器让长读取不会占据整个消息流。两个渲染点承载它：keyed `ReadRow`（在 `apply.ts` 里以 `read` 键注册，加载顺序接缝为 `inject: ['slots', 'conversation']`，与 bash 样例完全一致），其摘要是作为可打开的宿主链接的文件路径；以及 `GenericToolCard` 对没有自己 keyed 行的读取声明工具（例如归到 `read` 变体的 `web_fetch`）的回退。详情面板以 primitive 自己的全高上限（16）渲染同一张卡片，因为面板是单次调用的阅读界面。
+
+整行折叠/展开（把每个工具调用默认折叠）是一个单独的后续改动，它会一次性翻转每张常驻卡片；本 note 的卡片是常驻的，与它旁边的终端卡片一致。
+
+**读取卡片的语法按需 lazy 加载，只有 boot 三种保持 eager。** `highlight.ts` 是 `ui-primitives` 在每次 Web 启动都加载的平台 seed，其预热会无条件构建 shiki 单例。读取卡片的 `langFromPath` 提示覆盖完整的源码/配置/标记扩展集（python、rust、yaml、html……）；把它们全部 eager 注册会给启动 chunk 增加约 1.6 MB 的语法模块、并把它们的同步初始化摊给每个会话，包括从不打开读取卡片的会话。因此只有每个会话本就渲染的三种语法 —— TypeScript、shell、JSON（markdown 围栏与 `run_code` 语言）—— 在 boot 时加载。每种读取卡片扩展语法置于 `LAZY_GRAMMARS` 中一个动态 `import()` 之后，以其别名解析到的语法 id 为键。对某个 lazy 语言首次调用 `highlightLines`/`highlightToHtml` 时，`ensureGrammar` 启动 import（仅一次）并返回未就绪，于是卡片该帧渲染纯文本；import 解析后用 `loadLanguageSync` 注册该语法、递增一个加载计数、并通知订阅者。`ReadBlock` 与 `CodeBlock` 通过 `useSyncExternalStore(subscribeGrammarLoaded, grammarLoadCount)` 订阅，因此语法就绪的那一刻卡片就重渲染带上高亮。未知/缺省语言仍同步返回 undefined（纯文本，绝不报错）。
+
+**空窗口的复制控件被隐藏，与 `TerminalBlock` 对齐。** 成功读取一个空文件会返回 `lines: []`、`totalLines: 0`，且 `presentResult` 仍投出 `card: 'read'`，因此空窗口分支是可达的 —— 读取卡片并非如早前草稿所假设的对空结果不可达。故 `ReadBlock` 在 `lines` 为空时隐藏复制控件，正如 `TerminalBlock` 对空输出隐藏复制，使按钮绝不会用空字符串清空剪贴板。
+
+## Alternatives considered
+
+**给 `CodeBlock` 加一个可选行号栏和 `startLine`。** 拒绝：这会把读取专属的行号栏、窗口计数提示和高度上限强加给共享 `CodeBlock` 的每个 markdown 围栏和 `run_code` 程序体，对那些调用者毫无好处。真正共享的界面是 shiki 语法单例，两个 block 都通过 `highlight.ts` 复用它；围绕它的外壳各不相同（读取有行号栏和窗口提示，围栏两者都没有），因此第二个小 primitive 是正确的切分 —— 正如 `TerminalBlock` 是基于同一套 token 的第二个 primitive，而不是 `CodeBlock` 的一种模式。
+
+**复用 `highlightToHtml`，用 CSS counter 注入行号。** 拒绝：shiki 产出的单 `
` HTML 没有可供行号栏挂上文件行号的逐行边界（窗口读取的行号从大于 1 处开始，不是简单的 CSS counter 自增），而从 HTML 里把行号解析回来又很脆弱。`codeToTokens` 直接给出逐行 token 结构。
+
+**在 boot 预热里 eager 注册所有读取卡片语法。** 拒绝：这会给每次 Web 启动摊上约 1.6 MB 语法模块及其同步初始化，只为一张多数会话从不打开的卡片。lazy 路径的代价是某个语言首次被读取时的一帧纯文本，随后在语法加载的重渲染里高亮；boot 代价只为每个会话本就渲染的三种语法付出。
+
+## Consequences
+
+`ui-primitives` 增加 `ReadBlock` 和 `highlightLines`；没有新的运行时依赖（shiki 已因 `CodeBlock` 存在）。`ReadBlock` 只读取读取视图的字段，因此保持为渲染意图所承载内容的纯函数 —— 无会话查询，与产出该视图的 presenter 一样可安全回放。没有读取能力的 UI 仍通过通用卡片拿到后端的 `content` 回退（剥掉外壳的文本），保持不变。
+
+Web 聊天里的读取行现在常驻承载文件内容，是相对纯摘要行的一次刻意的密度增加，受聊天上限约束。`run_code` 子派发在已发布的线路上到不了读取卡片，与嵌套 bash 调用到不了终端卡片同因：`session.ts` 把 `tool/code-dispatch(-start)` 折叠为 `resultView: null`，因此嵌套读取保持通用的摊平形式。
+
+## Testing
+
+`packages/client/ui-primitives/tests/read-block.spec.tsx` 固定 primitive 与 token 路径：`highlightLines` 的逐行 css-variables 运行、它对尾部终止行的丢弃与真正空白末行的情形、它对未知/缺省语言返回 `undefined`、以及它的 lazy 路径（lazy 语法首次触碰返回纯文本，import 注册且订阅者触发后再高亮）；还有 `ReadBlock` 的带行号行保留文件自身编号、高亮与纯文本两条内容分支、横幅（标签、语言、仅当读取是窗口时的计数提示）、头/尾高度上限及其 `aria-expanded` 切换、复制控件在接受与拒绝两条剪贴板路径上写入窗口原始文本、以及空窗口分支隐藏复制控件。`code-block.spec.tsx` 覆盖 `highlightToHtml`，含它对每种读取卡片语法的 lazy 路径（每个动态 import thunk 各触碰一次）。`ReadBlock.tsx`、`highlight.ts`（及 `CodeBlock.tsx`）在这两个 spec 上均保持每文件 100% 覆盖。
+
+`packages/client/ui-conversation/tests/read-card.spec.tsx` 固定每个渲染点的接线：`readCardModel` 的派生与每条 null 分支（运行中读取、无视图、通用视图、未知卡片）、结果标题替换化简后的路径、路径相对工作区的化简、冻结行数组的复制而非别名；`GenericToolCard` 回退中与 keyed `ReadRow` 中的常驻卡片（外加其路径链接打开宿主、其 running/error/stopped 状态、以及其 `read` 键注册）；还有面板 Output 区段以全高渲染读取卡片同时保留 JSON Input 区段，含运行中读取占位与非读取摊平 pre 两条分支。该文件位于覆盖 `exclude` 列表（`ui-conversation/src/*`），因此不承受门槛压力。
+
+fixture（`packages/client/connection/src/client/fixture.ts`）增加 turn 66，一次 `read` 调用，其结果视图是窗口读取（行号从文件行 41 起、`totalLines` 180、`ts` 提示），使内置启动快照和实时 `?fixture` 服务器展示带行号、高亮和计数提示的读取卡片。它命名为 `read` 以驱动 keyed `ReadRow`。turn 64 的 `run_code` 样例中的嵌套读取子派发并不驱动渲染点回退读取卡片：`session.ts` 把它们折叠为 `resultView: null`，因此它们只覆盖回退行的通用行形状，而非回退行内的读取卡片；回退行读取卡片由 `read-card.spec.tsx` 的 `web_fetch` 用例钉住。turn 66 排在 todo turn（现为 67）之前，与终端样例同因：常驻计划在下一次 `turn/start` 退场。
+
+## Related
+
+- [读取卡片后端](2026-07-30-web-read-card.md) —— 增加本文消费的 `card: 'read'` 结果视图；产出本文渲染的 `lines`/`totalLines`/`lang`。
+- [Web 终端卡片](2026-07-28-web-terminal-card.md) —— 本文遵循的先例：一个 `ui-primitives` block、一个 `contract/*-card-model.ts` 派生、一个 keyed 行，以及让 `GenericToolCard`/`DetailsPanel` 感知卡片。
+- [Web 客户端语法高亮](../process/2026-07-26-web-syntax-highlighting-shiki.md) —— 拥有 `CodeBlock` 与 shiki `highlight.ts` 单例，本文以逐行 token 路径扩展它。
+- [工具调用呈现的标签式渲染意图联合](../architecture/2026-07-02-tool-render-intent-union.md) —— `card` 标签词汇表；Web 客户端现在是 `read` 分支的完整消费者。
diff --git a/.agents/notes/implemented/feature/2026-07-30-web-search-card.i18n.yaml b/.agents/notes/implemented/feature/2026-07-30-web-search-card.i18n.yaml
new file mode 100644
index 0000000000..a6658971b1
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-web-search-card.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-30-web-search-card.md
+2026-07-30-web-search-card.md: 4c7ae6c8c658f4f10f0667b12853cb2e70df15b1
+2026-07-30-web-search-card.zh.md: 714a2979730dc2c83f6cfc1cf6d21978755a2d95
diff --git a/.agents/notes/implemented/feature/2026-07-30-web-search-card.md b/.agents/notes/implemented/feature/2026-07-30-web-search-card.md
new file mode 100644
index 0000000000..4c7ae6c8c6
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-web-search-card.md
@@ -0,0 +1,65 @@
+# Agent Note: Web search card — the grep and glob render intent reaches the browser
+
+Status: implemented
+
+English | [中文](2026-07-30-web-search-card.zh.md)
+
+## Problem
+
+The `grep` and `glob` tools declare a result-time `card: 'search'` render intent ([search render card](2026-07-30-search-render-card.md)): a `SearchMatchesResultView` (`shape: 'matches'`) carrying grep's matches grouped by file, or a `SearchPathsResultView` (`shape: 'paths'`) carrying glob's flat path list, both with a `truncated`/`total` capping signal. That view already reaches the browser — host, connection, and runtime deliver it onto `ConversationSnapshot` as `resultView` — but the Web client ignored it: every non-terminal, non-diff tool result fell through to the generic card, which renders the model-facing text. A web frontend that wants an expandable per-file group of matches, or a scannable path list, had only the pre-formatted text.
+
+This is the follow-up the search render card note names: that PR was the backend contract and its two producers; this PR is the web consumer.
+
+## Decision
+
+`SearchBlock` is a `ui-primitives` component that renders a completed search as either shape, and the Web render sites for a `grep`/`glob` call consume the search render intent through it. `ui-conversation/src/client/contract/search-card-model.ts` is the single place that turns the snapshot's `resultView` into the component's props, so no render site re-derives the shape. It returns null — the generic path — whenever the result view is not a search card, including a still-running call (a search card is result-time only, so there is nothing before `execute`), a generic result a `grep`/`glob` failure or a nested `run_code` dispatch produces, a terminal result view, a `card` value this client version does not know, a `card: 'search'` view whose `shape` this version does not compile, and — because `shape` and the grouped/flat contents ride the same untrusted wire frame the host schema only string-checks — a known `shape` whose `files`/`paths` is missing or malformed (which would otherwise crash `SearchBlock` at `.reduce`/`.map`). The result-view discriminant is `shape` (not `kind`, which the backend reserves for the call view's icon-picking tag); `SearchBlock`'s own prop stays `kind`, mapped from `shape` in this derivation.
+
+The asymmetry with the terminal card is deliberate and inherited from the backend contract: `terminalCardModel` reads both `callView` and `resultView` because a command, cwd, and description exist at call time; `searchCardModel` reads only `resultView` because a search's matches or paths exist only after execution. A running search row therefore shows its summary alone, with no card.
+
+One component draws both shapes, discriminated by `kind`, because `grep` and `glob` are the same visual object — a search result. `SearchMatchesBlockProps` (`kind: 'matches'`) and `SearchPathsBlockProps` (`kind: 'paths'`) keep each shape's fields required rather than a single interface with everything optional. The component flattens whichever shape it holds into one list of render rows — a file header row plus its match rows for the matches shape, one path row per path for the paths shape — so the height cap counts a file header as one row exactly as a match line or a path, and the head/tail slice arithmetic is `TerminalBlock`'s (`ceil(max/2)` head, the remainder tail), so a long search result and a long command output cut at the same place across the two cards.
+
+The component's contract:
+
+- **Grouped matches, collapsible per file.** Each file is a header row (a bold path plus its match count, the whole row the collapse control) followed by its `lineNumber: line` rows. Collapsing a group drops its match rows from the flattened list and from the height cap's arithmetic, but never from the copy text.
+- **Flat path list.** The paths shape renders one path per row, no headers.
+- **A capped indicator.** When `truncated`, the banner summary folds the pre-cap total in — `显示 X / 共 N 处匹配 · K 个文件` for grep, `显示 X / 共 N 个路径` for glob — so the card never presents a capped page as the complete result. When not `truncated` the summary is a plain structural count (`{n} 处匹配 · {m} 个文件`, or `{n} 个路径`).
+- **A recovery footer for a capped result.** The card holds only the retained page, but the locator to the rest — grep/glob's `Full … stored at: ` footer — lives only in the raw `tool/result` content (the search view carries no result text; a UI without a card falls back to that raw content), not in the structured matches/paths. Because every render site replaces the raw result with the card, `searchCardModel` surfaces the block's own flattened result text as `SearchCardModel.recovery` when (and only when) the result was capped, and each render site draws it below the card. Without this the one path to the dropped rows would vanish from the UI; an uncapped result carries every row, so its raw text adds nothing and is dropped.
+- **No soft wrapping.** Result rows are `white-space: pre` inside a horizontally scrolling box, so a long match line or a deep path scrolls sideways rather than folding.
+- **Height cap with an expand control.** More than `DEFAULT_SEARCH_MAX_LINES` (16) rows shows a head/tail slice with a button reporting the hidden count, the same shape and arithmetic as `TerminalBlock`.
+- **Copy.** The copy control writes the whole structured result — every file and match, or every path — regardless of the height cap or which groups are collapsed, so the clipboard carries the result rather than what the card happens to be showing.
+
+Geometry, radius, and fonts mirror `CodeBlock` and `TerminalBlock`, so a search card reads as one family with them; `white-space: pre` plus horizontal scroll is the shared deliberate divergence.
+
+### Render sites
+
+Three sites consume the derivation, mirroring the terminal card's placement exactly:
+
+- **The keyed `SearchRow`** (`toolviews/search-row.tsx`) registers ONE component under both `grep` and `glob` in the `conversation.chat.toolview` keyed hole, and renders the card RESIDENT under the summary row, capped at `CHAT_SEARCH_MAX_LINES` (8) — the same posture `BashRow` takes for its terminal card. Both tool names get the same row because the derived `kind` decides the shape, so a second component would duplicate it. A capped result's recovery footer sits below the card. Because the keyed row owns this render slot, a settled call with no search card — an errored search (grep/glob emit no result view on error), a successful nested `run_code` sub-dispatch (the backend computes no `presentationMeta`, so `resultView` is null), or a legacy generic result — would otherwise show only its summary with its content lost; the row surfaces that model-facing text as a fallback body, keyed on `search === null && settled` rather than on the error state alone. (This resident posture matches the current terminal/diff cards; a separate later PR unifies the whole-row collapse/expand interaction and flips all resident cards at once — out of scope here.)
+- **The generic fallback** (`chat/GenericToolCard` → `chat/ToolRow`) threads the derived model as an expand-gated body, the same arm `terminal` uses: a `grep`/`glob` result with no keyed row (none in the shipped app, since both are registered) still renders its card, with the recovery footer, behind the row's expand toggle.
+- **The details panel** (`skeleton/DetailsPanel`) renders the card at the primitive's own full height in the Output section, with the recovery footer below it, keeping the JSON Input section.
+
+`CHAT_SEARCH_MAX_LINES` (8) is the row cap, half the primitive's default the panel keeps, for the same reason as `CHAT_TERMINAL_MAX_LINES`: the chat flow is a summary surface read across many calls, the panel is the single-call reading surface.
+
+## Alternatives considered
+
+**Two card components, one per tool.** Rejected: `grep` and `glob` are the same visual object discriminated only by `kind`, so two components would duplicate the banner, the height cap, the copy control, and the no-wrap geometry. One component switching on `kind` is what the backend's single `card: 'search'` view is for.
+
+**A `SearchCallView` so the row renders a card while the search runs.** Rejected: the backend contract deliberately has no call-time search view — a search has no matches or paths before `execute`. The running row shows its summary alone, and `searchCardModel` returns null for a running block, which is faithful to what exists.
+
+**Reuse `TerminalBlock` or `CodeBlock`.** Rejected: neither models per-file collapsible groups or a folded capped-result summary, and both would need the grouped-matches shape bolted on. The three blocks share their geometry and font tokens instead, which is the only part where one implementation is correct for all.
+
+## Consequences
+
+`SearchBlock` reads only the search view's fields, so it stays a pure function of what the render intent carries — no session lookups, replay-safe like the presenters that produce the view. A UI without the search capability still gets the bridge's fenced fallback; nothing about the tool's result shape changed. Extending `ToolRow` with a `search` body prop adds one arm beside `terminal`; a call carries at most one card kind, so the two are never both present on a row.
+
+## Testing
+
+`packages/client/ui-primitives/tests/search-block.spec.tsx` pins the component at per-file 100%: both kinds, the folded pre-cap total in the summary, the empty arm, per-file collapse/re-expand without touching neighbours, a file header counting as one capped row alongside its matches, the tail slice restoring its owning file header when the cut falls mid-file, the head/tail cap and its expand control across both shapes and the no-tail and default-cap edges, and the copy control writing the whole structured result on the accepted and refused clipboard paths.
+
+`packages/client/ui-conversation/tests/search-card.spec.tsx` pins the wiring at every render site: `searchCardModel`'s derivation for both kinds, the truncation signal, the replacement title, the recovery text surfaced only when capped, each null arm (running, no views, generic, terminal, unknown card, an uncompiled `kind`, and a known kind with a missing/malformed shape); the chat row's expand-gated matches and paths bodies through `GenericToolCard` (with the recovery footer) against the non-search args-JSON body; `SearchRow`'s resident card for both kinds, its recovery footer, its fallback body for both an errored search and a settled cardless result, its agreement with the summary row's run state, the replacement-title precedence, and the keyed registration under both `grep` and `glob` with one component; and the details panel's Output section for both kinds (with the recovery footer) against the non-search flattened form. `packages/client/ui-conversation/src/*` sits on the coverage exclude list, so this file is written against no gate pressure. `packages/client/connection/src/client/fixture.ts` gains a `grep` turn emitting `kind: 'matches'` (three files, twelve rows over the row cap, `truncated` with a spill-recovery footer, so it exercises the head/tail cap and the recovery footer in the assembled snapshot) and a `glob` turn emitting `kind: 'paths'`, both driving the built-boot snapshot and the live `?fixture` server. `apps/web/tests/search-card.snapshot.ts` is the assembled-output check the repo contract asks for: it boots the real built `client.js` bundles through the keyless fixture transport, opens the fixture session, and pins the grep card's assembled shape — kind, truncation summary, the head/tail slice, and its expand control — under `apps/web/tests/snapshots/search-card/`, so a broken SearchRow registration or a dropped card fails a golden the built-boot smoke (boot-only by contract) cannot.
+
+## Related
+
+- [Search render intent — grep and glob emit a structured search card](2026-07-30-search-render-card.md) — the backend contract and its two producers; this is its named web-consumer follow-up.
+- [Web terminal card](2026-07-28-web-terminal-card.md) — the precedent this mirrors: a tool's render intent reaches the browser through a `ui-primitives` block, a single `contract/*-card-model.ts` derivation, and the same three render sites.
+- [Tagged render-intent union for tool-call presentation](../architecture/2026-07-02-tool-render-intent-union.md) — the `card`-tagged vocabulary both cards consume.
diff --git a/.agents/notes/implemented/feature/2026-07-30-web-search-card.zh.md b/.agents/notes/implemented/feature/2026-07-30-web-search-card.zh.md
new file mode 100644
index 0000000000..714a297973
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-30-web-search-card.zh.md
@@ -0,0 +1,65 @@
+# Agent Note：Web 搜索卡片 —— grep 与 glob 的 render intent 到达浏览器
+
+Status: implemented
+
+[English](2026-07-30-web-search-card.md) | 中文
+
+## Problem
+
+`grep` 与 `glob` 工具声明了一个仅在结果阶段存在的 `card: 'search'` render intent（[search render card](2026-07-30-search-render-card.md)）：`SearchMatchesResultView`（`shape: 'matches'`）携带 grep 按文件分组的匹配，或 `SearchPathsResultView`（`shape: 'paths'`）携带 glob 的扁平路径列表，两者都带 `truncated`/`total` 截断信号。该视图已经到达浏览器 —— host、connection、runtime 把它作为 `resultView` 投递到 `ConversationSnapshot` 上 —— 但 Web 客户端忽略了它：每个非终端、非 diff 的工具结果都落到 generic 卡片，渲染面向模型的文本。想把搜索结果渲染成可展开的按文件匹配分组、或可扫读的路径列表的 web 前端，只有那段预格式化文本。
+
+这正是 search render card note 指名的后续：那个 PR 是后端契约和它的两个生产者，本 PR 是 web 消费者。
+
+## Decision
+
+`SearchBlock` 是一个 `ui-primitives` 组件，把一次已完成的搜索渲染成两种形态之一，`grep`/`glob` 调用的 Web 渲染点都通过它消费搜索 render intent。`ui-conversation/src/client/contract/search-card-model.ts` 是把 snapshot 的 `resultView` 转成组件 props 的唯一位置，因此没有渲染点重新推导形态。当结果视图不是搜索卡片时它返回 null（走 generic 路径），包括仍在运行的调用（搜索卡片仅在结果阶段存在，`execute` 前无内容）、`grep`/`glob` 失败或嵌套 `run_code` dispatch 产生的 generic 结果、terminal 结果视图、本客户端版本不认识的 `card` 值、`shape` 是本版本无法编译的 `card: 'search'` 视图，以及 —— 因为 `shape` 和分组/扁平内容与 host schema 只做字符串校验的那同一个不可信 wire 帧同行 —— 一个 `shape` 已知但 `files`/`paths` 缺失或格式错误的视图（否则会让 `SearchBlock` 在 `.reduce`/`.map` 处崩溃）。结果视图的判别键是 `shape`（不是 `kind` —— 后端把 `kind` 留给 call view 的选图标签）；`SearchBlock` 自身的 prop 仍是 `kind`，由本推导从 `shape` 映射得到。
+
+与终端卡片的不对称是刻意的，继承自后端契约：`terminalCardModel` 同时读 `callView` 和 `resultView`，因为命令、cwd、description 在调用时就存在；`searchCardModel` 只读 `resultView`，因为搜索的匹配或路径只在执行后存在。因此运行中的搜索行只显示摘要，没有卡片。
+
+一个组件绘制两种形态，用 `kind` 区分，因为 `grep` 和 `glob` 是同一个视觉对象 —— 一个搜索结果。`SearchMatchesBlockProps`（`kind: 'matches'`）和 `SearchPathsBlockProps`（`kind: 'paths'`）让每种形态的字段保持必填，而不是所有字段都可选的单一接口。组件把它持有的形态压平成一个渲染行列表 —— matches 形态是一个文件头行加它的匹配行，paths 形态是每个路径一行 —— 于是高度上限把一个文件头当作一行来计，与一条匹配行或一个路径相同，头/尾切片算术就是 `TerminalBlock` 的（`ceil(max/2)` 头，其余为尾），因此一个长搜索结果和一段长命令输出在两张卡片间在同一处截断。
+
+组件契约：
+
+- **按文件分组的匹配，逐文件可折叠。** 每个文件是一个头行（加粗路径加它的匹配计数，整行即折叠控件），后面跟它的 `lineNumber: line` 行。折叠一个组会把它的匹配行从压平列表和高度上限的算术里去掉，但绝不从复制文本里去掉。
+- **扁平路径列表。** paths 形态每行一个路径，无头行。
+- **截断指示。** `truncated` 时，横幅摘要把截断前总数折入 —— grep 为 `显示 X / 共 N 处匹配 · K 个文件`，glob 为 `显示 X / 共 N 个路径` —— 因此卡片绝不把一个被截断的页面呈现为完整结果。未 `truncated` 时摘要是一个朴素的结构计数（`{n} 处匹配 · {m} 个文件`，或 `{n} 个路径`）。
+- **被截断结果的恢复脚注。** 卡片只持有保留的那一页，但通往其余部分的定位符 —— grep/glob 的 `Full … stored at: ` 脚注 —— 只存在于原始 `tool/result` 内容里（搜索视图不携带结果文本；没有卡片的 UI 回退到那段原始内容），而非结构化的 matches/paths 中。由于每个渲染点都用卡片替换了原始结果，`searchCardModel` 在（且仅在）结果被截断时把 block 自身压平后的结果文本作为 `SearchCardModel.recovery` 暴露出来，每个渲染点把它画在卡片下方。没有它，通往被丢弃行的唯一路径就会从 UI 里消失；未截断的结果携带了每一行，其原始文本不增加任何信息，因此被丢弃。
+- **不软换行。** 结果行在一个横向滚动的盒子里 `white-space: pre`，因此一条长匹配行或一个深路径横向滚动而不折叠。
+- **带展开控件的高度上限。** 超过 `DEFAULT_SEARCH_MAX_LINES`（16）行时显示一个头/尾切片，中间一个按钮报告被隐藏的行数，形状和算术与 `TerminalBlock` 相同。
+- **复制。** 复制控件写入整个结构化结果 —— 每个文件与匹配，或每个路径 —— 无关高度上限或哪些组被折叠，因此剪贴板携带的是结果本身，而不是卡片此刻恰好显示的内容。
+
+几何、圆角、字体镜像 `CodeBlock` 与 `TerminalBlock`，因此搜索卡片与它们读作同一族；`white-space: pre` 加横向滚动是它们共享的刻意分歧。
+
+### 渲染点
+
+三个渲染点消费该推导，与终端卡片的落位完全一致：
+
+- **keyed `SearchRow`**（`toolviews/search-row.tsx`）把一个组件同时注册到 `conversation.chat.toolview` keyed hole 的 `grep` 与 `glob` 键下，并把卡片作为常驻（resident）渲染在摘要行下方，上限为 `CHAT_SEARCH_MAX_LINES`（8）—— 与 `BashRow` 对其终端卡片采取的姿态相同。两个工具名共用同一行，因为推导出的 `kind` 决定形态，第二个组件只会重复它。被截断结果的恢复脚注画在卡片下方。因为 keyed 行占据了这个渲染槽，一个没有搜索卡片的已结算调用 —— 出错的搜索（grep/glob 出错时不产出结果视图）、成功的嵌套 `run_code` 子派发（后端不为其计算 `presentationMeta`，故 `resultView` 为 null）、或旧日志的 generic 结果 —— 否则只会显示摘要而丢失内容；该行把这段面向模型的文本作为 fallback body 暴露出来，判据是 `search === null && 已结算`，而非仅凭错误状态。（该常驻姿态与当前的 terminal/diff 卡片一致；一个单独的后续 PR 会统一整行折叠/展开交互并一次性翻转所有常驻卡片 —— 不在本 PR 范围内。）
+- **generic fallback**（`chat/GenericToolCard` → `chat/ToolRow`）把推导出的 model 作为展开门控的 body 传入，与 `terminal` 用的是同一分支：没有 keyed 行的 `grep`/`glob` 结果（发布应用里没有，因为两者都注册了）仍在行的展开开关后渲染其卡片，并带恢复脚注。
+- **details panel**（`skeleton/DetailsPanel`）在 Output 段以 primitive 自身的完整高度渲染卡片，恢复脚注画在其下方，保留 JSON Input 段。
+
+`CHAT_SEARCH_MAX_LINES`（8）是行内上限，为 primitive 默认值的一半（panel 保留默认值），理由与 `CHAT_TERMINAL_MAX_LINES` 相同：chat 流是跨多次调用扫读的摘要表面，panel 是单次调用的阅读表面。
+
+## Alternatives considered
+
+**两个卡片组件，每个工具一个。** 否决：`grep` 与 `glob` 是仅由 `kind` 区分的同一视觉对象，两个组件会重复横幅、高度上限、复制控件与不换行几何。一个按 `kind` 分支的组件正是后端那个单一 `card: 'search'` 视图的用途。
+
+**加一个 `SearchCallView`，让行在搜索运行时就渲染卡片。** 否决：后端契约刻意没有调用阶段的搜索视图 —— 搜索在 `execute` 前没有匹配或路径。运行中的行只显示摘要，`searchCardModel` 对运行块返回 null，忠实于实际存在的东西。
+
+**复用 `TerminalBlock` 或 `CodeBlock`。** 否决：两者都不建模逐文件可折叠的组或折叠式截断摘要，都需要把按文件分组的形态硬塞进去。三个块转而共享几何与字体 token，那是唯一一处一个实现对三者都正确的部分。
+
+## Consequences
+
+`SearchBlock` 只读搜索视图的字段，因此保持为 render intent 所携内容的纯函数 —— 无会话查询，与产生该视图的 presenter 一样可重放。没有搜索能力的 UI 仍得到 bridge 的围栏回退；工具的结果形态没有任何改变。给 `ToolRow` 扩一个 `search` body prop 只在 `terminal` 旁加一个分支；一次调用至多携带一种卡片，因此两者绝不同时出现在一行。
+
+## Testing
+
+`packages/client/ui-primitives/tests/search-block.spec.tsx` 以 per-file 100% 覆盖固定组件：两种 kind、折入摘要的截断前总数、空结果分支、逐文件折叠/再展开且不影响邻居、一个文件头与其匹配一起计为一个被截断行、切口落在文件中间时尾部切片恢复其所属文件头、跨两种形态的头/尾上限及其展开控件（含无尾与默认上限的边界），以及复制控件在接受与拒绝的剪贴板路径上写入整个结构化结果。
+
+`packages/client/ui-conversation/tests/search-card.spec.tsx` 固定每个渲染点的接线：`searchCardModel` 对两种 kind 的推导、截断信号、替换标题、仅在截断时暴露的恢复文本，以及每个 null 分支（运行中、无视图、generic、terminal、未知卡片、本版本无法编译的 `kind`、以及一个形态缺失/错误的已知 kind）；通过 `GenericToolCard` 的展开门控 matches 与 paths body（含恢复脚注），对照非搜索的 args-JSON body；`SearchRow` 对两种 kind 的常驻卡片、它的恢复脚注、它对出错搜索与已结算无卡片结果两者的 fallback body、它与摘要行运行状态的一致、替换标题优先级，以及一个组件在 `grep` 与 `glob` 两个键下的 keyed 注册；以及 details panel 的 Output 段对两种 kind（含恢复脚注），对照非搜索的压平形态。`packages/client/ui-conversation/src/*` 在覆盖排除清单上，因此该文件不受 gate 压力。`packages/client/connection/src/client/fixture.ts` 新增一个发出 `kind: 'matches'` 的 `grep` turn（三个文件、十二行超过行内上限、`truncated` 且带溢出恢复脚注，因此在组装快照里同时演练头/尾上限与恢复脚注）与一个发出 `kind: 'paths'` 的 `glob` turn，两者都驱动 built-boot snapshot 与实时 `?fixture` 服务。`apps/web/tests/search-card.snapshot.ts` 是仓库契约要求的组装输出检查：它通过 keyless fixture 传输启动真实构建的 `client.js` bundle，打开 fixture 会话，并把 grep 卡片的组装形态——kind、截断摘要、头/尾切片及其展开控件——固定在 `apps/web/tests/snapshots/search-card/` 下，因此一个损坏的 SearchRow 注册或被丢弃的卡片会让一个 golden 失败，而 built-boot smoke（按契约只测启动）无法捕获它。
+
+## Related
+
+- [Search render intent —— grep 与 glob 发出结构化搜索卡片](2026-07-30-search-render-card.md) —— 后端契约与它的两个生产者；本 note 是它指名的 web 消费者后续。
+- [Web 终端卡片](2026-07-28-web-terminal-card.md) —— 本 note 镜像的先例：工具的 render intent 通过一个 `ui-primitives` 块、一个 `contract/*-card-model.ts` 推导、以及同样的三个渲染点到达浏览器。
+- [工具调用呈现的标签化 render-intent 联合](../architecture/2026-07-02-tool-render-intent-union.md) —— 两张卡片都消费的 `card` 标签词汇。
diff --git a/.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.i18n.yaml b/.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.i18n.yaml
new file mode 100644
index 0000000000..d1fb6cb6c7
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.md
+2026-07-31-browser-derived-initial-locale.md: 0c49a6bbfec0ab33a5aa3ce53dde0cac747f3816
+2026-07-31-browser-derived-initial-locale.zh.md: c013d24dcd3bb49d176eaddd42ff41dde320ff1f
diff --git a/.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.md b/.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.md
new file mode 100644
index 0000000000..0c49a6bbfe
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.md
@@ -0,0 +1,36 @@
+# Agent Note: The Settings language a fresh browser opens in comes from the browser
+
+Status: implemented
+
+English | [中文](2026-07-31-browser-derived-initial-locale.zh.md)
+
+## Problem
+
+The Settings Language row opened every first visit in Chinese: `LocaleService` read `dsh.locale` from localStorage and fell straight back to `zh` when nothing was stored. The browser already states which languages its user reads — `navigator.languages` is that statement — and the app ignored it, so an English reader met a Chinese product and had to find a Chinese-labelled settings row to escape it. The fallback was doing two jobs at once: the last resort for an unresolvable locale, and the answer for every user who had simply never chosen.
+
+## Decision
+
+**The initial locale resolves through three ordered sources: the persisted preference, then the browser, then `FALLBACK_LOCALE`.** `resolveInitialLocale()` in `packages/client/locale/src/client/index.ts` runs at service construction and is the only place the order is expressed; `restorePreference()` now returns `LocaleId | undefined` (an absent, unparseable, or unreachable store reads as *no preference*) so the next source can speak.
+
+**Browser matching is on the primary subtag, over the ordered list.** `detectBrowserLocale()` walks `[...(navigator.languages ?? []), navigator.language]` and returns the first entry whose primary subtag names a shipped locale, so `zh-Hans-CN` and `zh-TW` both land on `zh` and `en-GB` on `en`, while a browser asking only for languages this app does not ship (`fr`, `de`) yields nothing and leaves `FALLBACK_LOCALE` in charge. `navigator.language` trails the list and covers its absence on hosts that ship a Navigator without `languages` — the DOM lib types it as always present, so that tolerance carries a narrow lint exception, the same environment-boundary distrust the `localStorage` guards already express.
+
+**`window`, not `navigator`, is the browser test.** Node ≥ 21 exposes a global `navigator` reporting the machine's own language (`en-US` on the CI runners), so gating on `navigator` would have let a node boot of the client tree resolve to `en` instead of the documented fallback. Gating on `window` keeps every non-browser run on `FALLBACK_LOCALE`.
+
+**An explicit choice is permanent.** `setLocale` persistence is untouched, and the persisted value is consulted first, so a user who picked a language keeps it even when travelling between browser profiles or system languages. Nothing writes the detected locale back to storage: detection is re-derived every boot and stays invisible to the "has the user chosen?" question.
+
+**The browser e2e lane now pins the browser language, not just storage.** Scenarios asserting Chinese copy (`access-confirmation`, `models-settings`, `onboarding-deepseek-config`, `settings-chrome`) open their page with `locale: ZH_BROWSER_LOCALE` from `apps/web/tests/support.ts`; `newEnglishPage` keeps pinning `dsh.locale=en`, which still wins over any browser language. `settings-chrome.e2e.ts` gained a scenario opening a second `en-US` page with empty storage and asserting the settings surface comes up English — the assembled-app proof of this feature.
+
+## Alternatives considered
+
+- **`Intl.DateTimeFormat().resolvedOptions().locale` or a single `navigator.language` read**: both collapse the user's ordered preference list to one tag, so a `['de', 'en', 'zh']` reader gets zh instead of en. The list is the part of the browser statement worth reading.
+- **Persisting the detected locale on first boot**: it would make detection a one-time event and let a stale first visit outlive a changed browser language, and it destroys the distinction the resolution order rests on — a stored value would no longer mean "the user chose this".
+- **Full BCP 47 negotiation (`Intl.LocaleMatcher`-style lookup, region and script weighting)**: with exactly two shipped locales that differ in language, primary-subtag matching is the whole of the correct answer; a negotiation layer would be untestable surface with no behavior to justify it.
+- **A cordis config key for the default locale**: the deployment does not vary here — the fallback is the product's answer for "no signal at all", not a knob. Repo policy reserves `Config` fields for deployment-varying choices with a current consumer.
+- **Keeping the e2e lane's zh scenarios on storage pinning (`dsh.locale=zh`)**: it would keep the suite green while removing the only place the browser-derived path runs in an assembled app; pinning the browser language instead exercises the new resolution end to end.
+
+## Consequences
+
+- A first visit from an English browser lands in English, and the Language row still shows the same two self-described options, so the escape hatch is unchanged in either direction.
+- `FALLBACK_LOCALE` narrows to its real job — the dictionary fallback and the no-signal answer — and stops standing in for "the user has not chosen".
+- Tests that construct a `LocaleService` under jsdom now depend on the environment's `navigator`: specs asserting localized copy declare their browser with one suite-level `usePinnedBrowserLanguages('zh-CN')` (dsh-client-test-runtime), and any future spec asserting a default must do the same. This package's own specs stub the globals directly, because they need shapes the helper deliberately cannot express (absent `languages`, a list decoupled from `language`, no `window` at all).
+- Detection cost is one array walk per service construction, and no storage write, so boot behavior and the persisted-state surface are unchanged.
diff --git a/.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.zh.md b/.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.zh.md
new file mode 100644
index 0000000000..c013d24dcd
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-31-browser-derived-initial-locale.zh.md
@@ -0,0 +1,36 @@
+# Agent Note: 全新浏览器打开的设置语言由浏览器决定
+
+Status: implemented
+
+[English](2026-07-31-browser-derived-initial-locale.md) | 中文
+
+## Problem
+
+设置里的语言行在每一次首访时都以中文开场：`LocaleService` 从 localStorage 读取 `dsh.locale`，读不到就直接回落到 `zh`。浏览器本已声明其使用者阅读哪些语言——`navigator.languages` 就是这份声明——而应用对此视而不见，于是英文读者迎面撞上一个中文产品，还得先找到一行中文标签的设置项才能脱身。回落值当时同时承担两份职责：既是无法解析出 locale 时的最后兜底，也是所有从未做过选择的用户拿到的答案。
+
+## Decision
+
+**初始 locale 依次经三个来源解析：已持久化的偏好、浏览器、`FALLBACK_LOCALE`。** `packages/client/locale/src/client/index.ts` 中的 `resolveInitialLocale()` 在服务构造时运行，是这一顺序的唯一表达处；`restorePreference()` 现在返回 `LocaleId | undefined`（存储项缺失、无法解析或不可访问，一律读作*没有偏好*），后一个来源才有开口的机会。
+
+**浏览器匹配按主子标签进行，且遍历有序列表。** `detectBrowserLocale()` 遍历 `[...(navigator.languages ?? []), navigator.language]`，返回主子标签命中已提供 locale 的首个条目，因此 `zh-Hans-CN` 与 `zh-TW` 同归 `zh`、`en-GB` 归 `en`；而只请求本应用不提供的语言（`fr`、`de`）的浏览器则什么都匹配不到，交由 `FALLBACK_LOCALE` 接管。`navigator.language` 排在列表之后，并兜住那些 Navigator 上没有 `languages` 的宿主——DOM 库把它标注为必然存在，所以这份容忍带一条窄口径 lint 例外，与 `localStorage` 守卫表达的环境边界不信任同源。
+
+**判定浏览器用的是 `window` 而非 `navigator`。** Node ≥ 21 暴露全局 `navigator` 并报告机器自身语言（CI runner 上是 `en-US`），因此以 `navigator` 把关会让 node 启动客户端树时解析成 `en`，而非文档约定的回落值。以 `window` 把关可使所有非浏览器运行都停留在 `FALLBACK_LOCALE`。
+
+**显式选择是永久的。** `setLocale` 的持久化未作改动，且持久化值最先被查询，因此选过语言的用户即便在不同浏览器配置或系统语言之间辗转也保留原选择。没有任何代码把探测到的 locale 写回存储：探测在每次启动时重新推导，对"用户是否做过选择"这一问题始终不可见。
+
+**浏览器 e2e 车道现在钉住浏览器语言，而不只是存储项。** 断言中文文案的场景（`access-confirmation`、`models-settings`、`onboarding-deepseek-config`、`settings-chrome`）以 `apps/web/tests/support.ts` 的 `locale: ZH_BROWSER_LOCALE` 打开页面；`newEnglishPage` 仍然钉 `dsh.locale=en`，它依旧压过任何浏览器语言。`settings-chrome.e2e.ts` 新增一个场景：另开一个存储项为空的 `en-US` 页面，断言设置界面以英文呈现——这是本功能在组装后应用中的证据。
+
+## Alternatives considered
+
+- **`Intl.DateTimeFormat().resolvedOptions().locale` 或单读 `navigator.language`**：两者都把用户的有序偏好列表塌缩成一个标签，于是 `['de', 'en', 'zh']` 的读者拿到的是 zh 而非 en。列表恰恰是浏览器这份声明里最值得读的部分。
+- **首次启动即持久化探测结果**：那会把探测变成一次性事件，让一次陈旧的首访凌驾于此后改变的浏览器语言之上，也摧毁了整个解析顺序所依赖的区分——存储值将不再意味着"用户选了它"。
+- **完整的 BCP 47 协商（`Intl.LocaleMatcher` 式查找、地区与文字权重）**：在只提供两个语言互异的 locale 时，主子标签匹配就是正确答案的全部；协商层只会带来无行为支撑、也无从测试的表面积。
+- **为默认 locale 增加一个 cordis config key**：此处部署之间并无差异——回落值是产品对"完全没有信号"给出的答案，不是旋钮。仓库策略把 `Config` 字段留给有当前消费者、且随部署变化的选择。
+- **让 e2e 车道的中文场景继续钉存储项（`dsh.locale=zh`）**：那会让套件保持绿色，却抹掉浏览器推导路径在组装后应用中唯一的运行处；改钉浏览器语言才能端到端地演练新的解析过程。
+
+## Consequences
+
+- 来自英文浏览器的首访落在英文界面，而语言行依然呈现同样两个以自身语言自述的选项，两个方向的脱身通道都未改变。
+- `FALLBACK_LOCALE` 收窄回它真正的职责——字典回落与无信号时的答案——不再兼职充当"用户尚未选择"。
+- 在 jsdom 下构造 `LocaleService` 的测试现在依赖环境的 `navigator`：断言本地化文案的用例以一行套件级 `usePinnedBrowserLanguages('zh-CN')`（dsh-client-test-runtime）声明其浏览器，今后任何断言默认值的用例同样如此。本包自己的用例直接给全局打桩，因为它们需要该 helper 刻意不表达的形状（`languages` 缺失、列表与 `language` 解耦、完全没有 `window`）。
+- 探测的代价是每次服务构造遍历一次数组，且不写存储，因此启动行为与持久化状态面均无变化。
diff --git a/.agents/notes/implemented/feature/2026-07-31-web-default-search.i18n.yaml b/.agents/notes/implemented/feature/2026-07-31-web-default-search.i18n.yaml
new file mode 100644
index 0000000000..f06c290bb3
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-31-web-default-search.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-31-web-default-search.md
+2026-07-31-web-default-search.md: ddc047a963212cb228da67c6c33128877cacf92c
+2026-07-31-web-default-search.zh.md: 05c30b625953ccd54c127a97b646ad7db75f693b
diff --git a/.agents/notes/implemented/feature/2026-07-31-web-default-search.md b/.agents/notes/implemented/feature/2026-07-31-web-default-search.md
new file mode 100644
index 0000000000..ddc047a963
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-31-web-default-search.md
@@ -0,0 +1,35 @@
+# Agent Note: Default Web search in the Web/headless composition
+
+Status: implemented
+
+English | [中文](2026-07-31-web-default-search.zh.md)
+
+## Problem
+
+The harness had a complete Web capability family—provider registry, DeepSeek/Exa/Perplexity search providers, local fetch, stable model tools, and structured result presentation—but the shipped `dsh web` composition mounted none of it. The model could not discover current information unless a deployment supplied a custom overlay. Merely mounting the existing DeepSeek provider would not complete the WebUI path: the Models page stores `DEEPSEEK_API_KEY` through `ctx.credentials`, while the search provider froze only the process environment at plugin load, so a key entered or rotated in the running UI would not reach search.
+
+## Decision
+
+`apps/cli/config/web.cordis.yml` explicitly mounts `dsh-web` with `searchProvider: deepseek-official`, `dsh-web-search-deepseek`, and `dsh-tool-web` with `fetch: false`. It does not mount `dsh-web-fetch-local` or select a fetch provider. The shared overlay makes only `web_search` a default for browser and headless sessions; the TUI composition remains unchanged. The explicit search provider id keeps selection independent of registration order and leaves personal or `--config` overlays able to replace or disable the rows.
+
+DeepSeek search uses the same `DEEPSEEK_API_KEY` credential reference as the official conversation adapter. The provider resolves that reference inside every search through the optional `ctx.credentials` service; only a composition without the seam falls back to the launching process environment, and a non-empty literal `apiKey` remains the programmatic last resort. A stored or rotated Web Models key therefore reaches the next search without restarting or retaining the value on the provider. Because `WebSearchProvider.available()` is synchronous, it treats an installed resolver as locally usable and missing dynamic credentials fail the operation with the provider-specific `WEB_PROVIDER_CREDENTIAL_MISSING` code while the stable tool schema stays registered.
+
+Search keeps its endpoint distinct from chat completions: `DEEPSEEK_SEARCH_BASE_URL` overrides the Anthropic-compatible base, while `DEEPSEEK_BASE_URL` continues to configure conversation requests. Each `web_search` performs an auxiliary DeepSeek Messages call with the native search server tool. Immediately before dispatch, the provider appends a log-only `web/deepseek-search-llm-request` event to the initiating Agent session with the resolved endpoint, API version, and exact secret-free JSON body. Credential preflight remains provider-local and races caller cancellation; neither concern expands the generic Web or credentials seams.
+
+The default mount does not create a Web-specific permission policy. `web_search` executes outside the bash/filesystem sandbox and approval presets, following `dsh-tool-web`'s existing contract. It does not mount `web_fetch` or a local fetch provider, so the default does not grant model-selected arbitrary URL retrieval. The shipped deployment already defaults to `danger-full-access`; a future restricted-network product stance must add a `tools/pre-execute` policy or capability-specific network confinement rather than implying that filesystem access mode governs Web calls.
+
+## Alternatives considered
+
+**Mount only `dsh-tool-web`.** Rejected because stable schemas without registered providers would make every default call fail; enablement and backend availability are deliberately separate, but a shipped default must supply its intended implementations.
+
+**Read `$DSH_HOME/.env` from `cordis.yml` or hoist it into `process.env`.** Rejected because the credential provider owns that document, environment values are read-only overrides, and hoisting would make stored keys unrotatable while bypassing the audited secret boundary.
+
+**Freeze `process.env.DEEPSEEK_API_KEY` at provider load.** Rejected because the Web Models page writes through `ctx.credentials`; the product's documented first-run path must make the next operation work without a restart.
+
+**Mount Web tools in `base.cordis.yml`.** Rejected because that would also change the TUI deployment. The browser and headless entries already share `web.cordis.yml`; they gain the capability together while TUI remains an explicit later decision.
+
+**Enable search and fetch together.** Rejected because default `web_fetch` would allow model-selected anonymous outbound HTTP(S) retrieval to arbitrary URLs. Search covers discovery; deployments that accept broader retrieval can opt into `dsh-web-fetch-local` and set `dsh-tool-web`'s `fetch` option to `true` in their overlay.
+
+## Consequences
+
+Web/headless model requests carry only the `web_search` schema and search-only prompt guidance in native mode; Code Mode exposes the same search capability beneath `run_code`. The prompt tells the model to use returned snippets and never advertises the disabled `web_fetch` tool. Search adds a complete auxiliary model call and may use the native server tool multiple times; its exact secret-free request remains reconstructable from the initiating session log. The default offers search-result snippets and source metadata but no arbitrary page retrieval; deployments that need full-page fetch must opt in. The Web snapshot lane boots the shipped tree, drives a replayed `web_search` call through the real DeepSeek provider against a local Messages fixture, asserts the durable auxiliary request and structured result, and pins the settled browser presentation. The real-composition smoke test pins the absence of `web_fetch`; provider tests pin missing, stored, and rotated credential behavior plus literal and ambient compatibility.
diff --git a/.agents/notes/implemented/feature/2026-07-31-web-default-search.zh.md b/.agents/notes/implemented/feature/2026-07-31-web-default-search.zh.md
new file mode 100644
index 0000000000..05c30b6259
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-07-31-web-default-search.zh.md
@@ -0,0 +1,35 @@
+# Agent Note: Web／无头组合中的默认 Web 搜索
+
+Status: implemented
+
+[English](2026-07-31-web-default-search.md) | 中文
+
+## 问题
+
+该 harness 已具备完整的 Web 能力体系：提供方注册表、DeepSeek、Exa 和 Perplexity 搜索提供方、本地抓取、稳定的面向模型工具，以及结构化结果呈现，但已交付的 `dsh web` 组合没有挂载其中任何一项。除非部署提供自定义覆盖层，否则模型无法发现最新信息。仅挂载现有 DeepSeek 提供方仍无法打通 WebUI 链路：Models 页面通过 `ctx.credentials` 存储 `DEEPSEEK_API_KEY`，而搜索提供方只会在插件加载时固定读取进程环境，因此在运行中的 UI 输入或轮换的密钥无法用于搜索。
+
+## 决策
+
+`apps/cli/config/web.cordis.yml` 明确挂载 `dsh-web`，配置 `searchProvider: deepseek-official`，同时挂载 `dsh-web-search-deepseek`，并以 `fetch: false` 挂载 `dsh-tool-web`。它不挂载 `dsh-web-fetch-local`，也不选择抓取提供方。共享覆盖层只将 `web_search` 设为浏览器与无头会话的默认工具；TUI 组合保持不变。显式搜索提供方 id 使选择不受注册顺序影响，同时个人覆盖层或 `--config` 覆盖层仍可替换或禁用这些配置项。
+
+DeepSeek 搜索使用与官方会话适配器相同的 `DEEPSEEK_API_KEY` 凭据引用。提供方在每次搜索内部通过可选的 `ctx.credentials` 服务解析该引用；只有未挂载该 seam 的组合才会回退到启动进程的环境变量，非空的 `apiKey` 字面值仍作为程序化配置的最后兜底。因此，由 Web 的 Models 页存储或轮换的密钥无需重启即可用于下一次搜索，提供方也无需保留该值。由于 `WebSearchProvider.available()` 是同步方法，它会将已安装解析器视为本地可用；若动态凭据缺失，操作会以提供方专属错误码 `WEB_PROVIDER_CREDENTIAL_MISSING` 失败，而稳定的工具 schema 仍保持注册。
+
+搜索端点与 chat completions 保持独立：`DEEPSEEK_SEARCH_BASE_URL` 覆盖 Anthropic 兼容基址，`DEEPSEEK_BASE_URL` 则继续配置会话请求。每次 `web_search` 都会发起一次辅助 DeepSeek Messages 调用，并携带原生搜索服务器工具。发出请求前一刻，提供方会向发起请求的 agent（智能体）会话追加仅用于日志的 LLM（大语言模型）请求事件 `web/deepseek-search-llm-request`，其中包含已解析端点、API 版本，以及不含密钥的精确 JSON 请求体。凭据预检仍留在提供方内部，并与调用方取消存在竞态；这两项关注点都不会扩展通用 Web seam 或凭据 seam。
+
+默认挂载不会创建 Web 专用权限策略。`web_search` 在 bash／文件系统沙箱及审批预设之外执行，并遵循 `dsh-tool-web` 的现有契约。组合不挂载 `web_fetch` 或本地抓取提供方，因此默认配置不会允许模型自行选择任意 URL 进行抓取。已交付部署的默认值本就是 `danger-full-access`；未来如果产品采取受限网络策略，必须添加 `tools/pre-execute` 策略或按能力限制网络访问，而不能暗示文件系统访问模式会管辖 Web 调用。
+
+## 考虑过的替代方案
+
+**仅挂载 `dsh-tool-web`。** 不予采纳：稳定的 schema 如果没有已注册提供方，每次默认调用都会失败。启用状态与后端可用性刻意分离，但已交付的默认配置必须提供其预期实现。
+
+**从 `cordis.yml` 读取 `$DSH_HOME/.env`，或将其提升到 `process.env`。** 不予采纳：凭据提供方拥有该文件，环境变量值是只读覆盖；提升后存储的密钥将无法轮换，还会绕过经审计的密钥边界。
+
+**在提供方加载时固定读取 `process.env.DEEPSEEK_API_KEY`。** 不予采纳：Web Models 页面通过 `ctx.credentials` 写入密钥；产品文档规定的首次运行路径必须保证下一次操作无需重启即可生效。
+
+**在 `base.cordis.yml` 中挂载 Web 工具。** 不予采纳：这也会改变 TUI 部署。浏览器与无头入口已经共享 `web.cordis.yml`；两者会一同获得该能力，是否为 TUI 启用则仍留作后续显式决策。
+
+**同时启用搜索和抓取。** 不予采纳：默认启用 `web_fetch` 会允许模型自行选择任意 URL，执行匿名出站 HTTP(S) 抓取。搜索负责发现信息；接受更广泛抓取范围的部署可以在覆盖层中选择启用 `dsh-web-fetch-local`，并将 `dsh-tool-web` 的 `fetch` 选项设为 `true`。
+
+## 后果
+
+Web／无头模型请求在原生模式下只会携带 `web_search` schema，以及仅用于搜索的提示词指引；Code Mode 通过 `run_code` 公开相同的搜索能力。该提示词要求模型使用返回的 snippet，且绝不会向模型提及已禁用的 `web_fetch` 工具。搜索会增加一次完整的辅助模型调用，并可能多次使用原生服务器工具；发起会话的日志仍可精确重建其不含密钥的请求。默认配置会提供搜索结果 snippet 与来源元数据，但不支持任意页面抓取；需要抓取完整页面的部署必须自行选择启用抓取。Web 快照通道会启动已交付配置树，使用本地 Messages fixture（测试前置数据），经由真实 DeepSeek 提供方驱动一次回放的 `web_search` 调用，断言持久化的辅助请求与结构化结果，并固定最终浏览器呈现。真实组合冒烟测试固定了不提供 `web_fetch` 这一事实；提供方测试固定缺失、已存储及已轮换凭据的行为，以及字面值与环境变量的兼容性。
diff --git a/.agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.i18n.yaml b/.agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.i18n.yaml
new file mode 100644
index 0000000000..f690cc7a95
--- /dev/null
+++ b/.agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.md
+2026-07-31-capability-neutral-sandbox-policy-context.md: d45c6c652fb7a061c2f92b7e03c41cce39da2a30
+2026-07-31-capability-neutral-sandbox-policy-context.zh.md: 9a1bb7a13d934826dddf89b409b25ba892a31ea3
diff --git a/.agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.md b/.agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.md
new file mode 100644
index 0000000000..d45c6c652f
--- /dev/null
+++ b/.agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.md
@@ -0,0 +1,35 @@
+# Agent Note: Capability-neutral sandbox policy context
+
+Status: implemented
+
+English | [中文](2026-07-31-capability-neutral-sandbox-policy-context.zh.md)
+
+## Problem
+
+The current-policy context originally mirrored runtime composition through separate enforced-family and escalatable-family registries. Six backend, tool, and example call sites contributed `filesystem`, `bash`, or `terminal`; the policy service retained token sets for independent disposal, intersected and ordered the two registries, invalidated prompt assemblies on every lifecycle change, and tested every family combination.
+
+That inventory was neither needed to state the file policy nor authoritative for model-visible capability. A backend contribution could name a family whose model-facing tool was absent or hidden by request scope, while tool schemas already told the model which exact operations were available. The registries therefore widened the public service and lifecycle contract to maintain an approximate English sentence.
+
+## Decision
+
+`dsh-sandbox-policy` contributes one capability-neutral `sandbox:policy` context for every agent session. It derives the text only from `resolve({ session })`; there is no backend or tool family registration API, contribution map, ordering rule, or registration-driven prompt invalidation.
+
+The text conditions capability claims on available operations that the DSH file sandbox enforces. Under `read-only`, it states that such operations cannot modify files in the standing mode and tells the model to try an available tool normally, then follow any denial and escalation guidance that tool returns. Under `workspace-write`, it states the canonical session workspace and the qualified temporary-area allowance. Under `danger-full-access`, it states that the DSH file sandbox does not restrict file modifications by available operations.
+
+Tool schemas remain the authority for which operations are available. Tool results remain the authority for operation-specific denials and approved wider retries. Filesystem, one-shot bash, and terminal implementations continue to resolve and enforce the same per-call policy; only the redundant model-facing capability inventory is removed.
+
+This decision partially supersedes the family-registration and composition-conditioned wording in [the current sandbox policy context decision](../feature/2026-07-30-current-sandbox-policy-context.md). That note remains the owner of cache-safe context delivery, durable snapshot materialization, wording evidence, and the separation between guidance and enforcement.
+
+## Alternatives considered
+
+**Keep the registries but reduce their tests.** Rejected because the public methods, retained lifecycle state, six contribution sites, and approximate capability claim would remain. The combinatorial tests reflected the design cost; they did not create it.
+
+**Derive an exact inventory from the tool registry.** Rejected because current policy needs only a truthful conditional statement, while exact availability already appears in the assembled tool schemas and can vary by request scope. Mapping each schema back to an enforcement backend would introduce another derived relation with no current consumer.
+
+**Omit policy context unless a backend advertises enforcement.** Rejected because it recreates the registration problem and makes policy visibility depend on optional contributors. The conditional wording remains truthful even when no applicable operation is available.
+
+## Consequences
+
+The policy service has one owner-derived context path instead of two public registries and their disposal lifecycle. Capability additions and removals no longer churn the runtime-context snapshot, while mode and workspace changes still do. Exact mode wording, canonical roots, switching, resume, service disposal, and no-agent assembly remain covered; family-combination and contribution-lifecycle tests disappear with the behavior they protected.
+
+The model no longer receives a prose list of sandboxed capability families. It receives exact tool schemas plus one standing file-policy statement. If a future product needs a separate capability inventory, it must be derived from the authoritative per-request assembly rather than reconstructed through backend registration side channels.
diff --git a/.agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.zh.md b/.agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.zh.md
new file mode 100644
index 0000000000..9a1bb7a13d
--- /dev/null
+++ b/.agents/notes/implemented/simplification/2026-07-31-capability-neutral-sandbox-policy-context.zh.md
@@ -0,0 +1,35 @@
+# Agent Note: 不依赖具体能力的沙箱策略上下文
+
+Status: implemented
+
+[English](2026-07-31-capability-neutral-sandbox-policy-context.md) | 中文
+
+## 问题
+
+当前策略上下文最初通过受强制执行家族与可升权家族两个独立注册表来映射运行时组合。后端、工具与示例中的六个调用点会贡献 `filesystem`、`bash` 或 `terminal`；策略服务保留 token 集合，以便独立释放各项注册，对两个注册表的内容求交集并排序，在每次生命周期变化时使提示词组装失效，并且需要测试覆盖所有家族组合。
+
+这份清单既不是说明文件策略所必需的，也不能作为模型可见能力的权威依据。后端贡献可能声明某个家族，而该家族面向模型的工具并不存在，或被请求作用域隐藏；工具 schema 已经向模型准确说明哪些操作可用。因此，为了维护一句近似的英文说明，注册表扩大了公开服务与生命周期契约。
+
+## 决策
+
+`dsh-sandbox-policy` 为每个 agent（智能体）会话贡献一项不依赖具体能力的 `sandbox:policy` 上下文。上下文文本只根据 `resolve({ session })` 派生；不存在后端或工具家族注册 API、贡献映射、排序规则，也不会因注册变化而使提示词失效。
+
+该文本将能力声明限定于 DSH 文件沙箱所强制执行的可用操作。在 `read-only` 下，它说明这类操作在常驻模式下无法修改文件，并指示模型正常尝试可用工具，随后遵循该工具返回的任何拒绝与升权引导。在 `workspace-write` 下，它说明规范化的会话工作区，以及带有适用条件的临时区域写入许可。在 `danger-full-access` 下，它说明 DSH 文件沙箱不会限制可用操作修改文件。
+
+哪些操作可用仍以工具 schema 为准。针对具体操作的拒绝以及获批后的更宽松模式重试，仍以工具结果为准。文件系统、一次性 bash 与终端实现继续解析并强制执行相同的逐调用策略；移除的只有面向模型的冗余能力清单。
+
+本决策取代了[当前沙箱策略上下文决策](../feature/2026-07-30-current-sandbox-policy-context.md)中关于家族注册与按组合条件化措辞的部分内容。缓存安全的上下文交付、持久快照具体化、措辞证据，以及引导与强制执行之间的边界，仍以该 Agent Note 为归属文档。
+
+## 曾考虑的替代方案
+
+**保留注册表，但减少对应测试。** 不予采用，因为公开方法、保留的生命周期状态、六个贡献点和近似的能力声明仍会存在。组合测试只是体现了这一设计成本，并非成本的成因。
+
+**从工具注册表派生确切清单。** 不予采用，因为当前策略只需要一句符合事实的条件性声明，而确切的可用情况已经体现在组装后的工具 schema 中，并且可能随请求作用域变化。若再把每个 schema 映射回其强制执行后端，就会引入另一项派生关系，而当前没有消费方需要它。
+
+**仅在后端声明会强制执行时提供策略上下文。** 不予采用，因为这会重现注册问题，并使策略是否可见取决于可选贡献方。即使没有可适用的操作，这段带条件的措辞仍然符合事实。
+
+## 后果
+
+策略服务只有一条由归属方直接派生的上下文路径，无需维护两个公开注册表及其释放生命周期。增加或移除能力不再导致运行时上下文快照反复变化，模式和工作区变化仍会触发快照更新。聚焦测试仍覆盖各模式的确切措辞、规范化根目录、模式切换、恢复、服务释放与无 agent 组装；家族组合与贡献生命周期测试则随其所保护的行为一同删除。
+
+模型不再收到以自然语言列出的沙箱能力家族清单，而是收到确切的工具 schema 与一项常驻文件策略声明。未来若产品需要独立的能力清单，该清单必须从权威的逐请求组装结果中派生，不能通过后端注册这种旁路机制重建。
diff --git a/.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.i18n.yaml b/.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.i18n.yaml
new file mode 100644
index 0000000000..8cfbcd08c3
--- /dev/null
+++ b/.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.md
+2026-07-31-drop-user-message-edit-stub.md: 5a34be1dd285f4aced9e6cfb2e324b20ec734bed
+2026-07-31-drop-user-message-edit-stub.zh.md: 768cb4618b4a85f61e6348f8c6fb6a93d686e7d3
diff --git a/.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.md b/.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.md
new file mode 100644
index 0000000000..5a34be1dd2
--- /dev/null
+++ b/.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.md
@@ -0,0 +1,27 @@
+# Agent Note: Drop the user-message edit stub
+
+Status: implemented
+
+English | [中文](2026-07-31-drop-user-message-edit-stub.zh.md)
+
+## Problem
+
+The user bubble's IconActions row carried an edit button beside copy and branch. Nothing backed it: the control had no click handler, no client mutation, and no host operation for resending an edited message. A user who found it saw an affordance the product cannot honor.
+
+## Decision
+
+`MessageIconActions` renders clock / copy / branch only, and its `edit` prop is gone with the button; `MessageItem` no longer passes it. The user bubble and the assistant chrome now differ only by clock side. The package README records the missing capability under Known Limitations, and the web message-actions golden pins the row without the control.
+
+The common locale keeps its generic `edit` term, which is shared vocabulary rather than this component's copy.
+
+Reintroduce the control together with the capability: a client mutation that edits a settled user message and the host behavior that decides what the edited message does to the turn that already consumed it.
+
+## Alternatives considered
+
+**Disable the button with a tooltip.** A visible-but-dead control still advertises editing and costs the same explaining; removal is the honest state.
+
+**Wire it to the queue editor.** The queue edits a message that has not been sent. A settled user message is already in the transcript and in the model's context, so reusing that editor would silently mean something else.
+
+## Consequences
+
+Web offers no way to correct a sent message; branching from the message is the nearest available gesture. Reintroduction is a UI-only change once the mutation exists, since the row composes its actions from props.
diff --git a/.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.zh.md b/.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.zh.md
new file mode 100644
index 0000000000..768cb4618b
--- /dev/null
+++ b/.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.zh.md
@@ -0,0 +1,27 @@
+# Agent Note: 移除 user 消息的编辑存根
+
+Status: implemented
+
+[English](2026-07-31-drop-user-message-edit-stub.md) | 中文
+
+## 问题
+
+user 气泡的 IconActions 行在复制和分支旁边还有一个编辑按钮，但其背后什么都没有：该控件没有点击处理、没有 client 侧变更，也没有 host 侧重新发送已编辑消息的操作。用户找到它时，看到的是一个产品无法兑现的可供性。
+
+## 决策
+
+`MessageIconActions` 只渲染时钟／复制／分支，其 `edit` prop 随按钮一并删除；`MessageItem` 不再传入该 prop。现在 user 气泡与 assistant chrome 只在时钟位置上不同。包 README 在 Known Limitations 中记录这项缺失的能力，web 的 message-actions 金样固定了不含该控件的动作行。
+
+公共 locale 保留通用的 `edit` 词条：它是共享词汇，而非本组件的文案。
+
+重新引入该控件时要与能力一起落地：既需要编辑已定稿 user 消息的 client 变更，也需要 host 侧决定这条编辑后的消息对已经消费过它的轮次意味着什么。
+
+## 曾考虑的替代方案
+
+**把按钮置灰并加提示。** 一个可见但无效的控件仍在宣告可以编辑，解释成本相同；直接移除才是诚实的状态。
+
+**接到队列编辑器上。** 队列编辑的是尚未发送的消息。已定稿的 user 消息已经进入转录和模型上下文，复用该编辑器会让同一个动作悄悄变成另一件事。
+
+## 后果
+
+Web 没有任何途径修正已发送的消息；从该消息分支是最接近的现有手势。由于动作行的内容完全由 props 组合而来，能力就绪后重新引入只是一次纯 UI 改动。
diff --git a/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.i18n.yaml b/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.i18n.yaml
index ada8ff7a3e..91d77fb803 100644
--- a/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.i18n.yaml
+++ b/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.md
-2026-07-24-web-gui-browser-e2e-lane.md: 107dbddbfde8ad29e22d9cba04ce2b83c1d01383
-2026-07-24-web-gui-browser-e2e-lane.zh.md: e4132b2ebb3f30a9d540f47cf9416a13bc4aa9f3
+2026-07-24-web-gui-browser-e2e-lane.md: cdb7de52c50733d6650202ee2117916319940738
+2026-07-24-web-gui-browser-e2e-lane.zh.md: b850acf026502d054a9d8b2168f0b4f47f58f39b
diff --git a/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.md b/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.md
index 107dbddbfd..cdb7de52c5 100644
--- a/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.md
+++ b/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.md
@@ -28,7 +28,7 @@ The barrier stack for replay-mode browser assertions is, in order: (1) host-side
 
 No single-shot transient-DOM assertions: every hop from replay yield to React commit can coalesce chunks, so sampling `[data-streaming]` is a race by construction. Streaming incrementality is asserted from the persisted `assistant/chunk` events (model-visible ⟺ logged makes the log the authoritative proof). `dsh-llm-replay`'s opt-in `paceMs` (default absent = burst) is a realism knob so the browser observes genuinely incremental SSE; correctness never leans on it, and abort during a pace wait cancels promptly.
 
-Every scenario fails on any pageerror and on the client's connection-loss/gap-repair console warnings: the reconnect machine plus history resync would otherwise self-heal a dead SSE path and the suite would certify a broken wire. Scaffold `close()` calls the `ReplayHandle.assertConsumed()` teardown check (every recorded script bound, every cursor drained), converting silent underruns and shifted bindings into crisp diagnostics. No vitest retry on the lane; one chromium per file, fresh context per scenario, one host per scenario; viewport pinned; interaction selectors anchor on roles, `data-*` attributes, and visible text, while the frame and conversation-region captures use the existing CSS-module local-name anchors. Standard scenarios set `dsh.locale=en` before client boot so localized role locators and goldens use one explicit language; `settings-chrome.e2e.ts` alone leaves storage unset to cover the default Chinese state and both switch directions.
+Every scenario fails on any pageerror and on the client's connection-loss/gap-repair console warnings: the reconnect machine plus history resync would otherwise self-heal a dead SSE path and the suite would certify a broken wire. Scaffold `close()` calls the `ReplayHandle.assertConsumed()` teardown check (every recorded script bound, every cursor drained), converting silent underruns and shifted bindings into crisp diagnostics. No vitest retry on the lane; one chromium per file, fresh context per scenario, one host per scenario; viewport pinned; interaction selectors anchor on roles, `data-*` attributes, and visible text, while the frame and conversation-region captures use the existing CSS-module local-name anchors. Standard scenarios set `dsh.locale=en` before client boot so localized role locators and goldens use one explicit language; the scenarios asserting Chinese copy leave storage unset and open a `zh-CN` browser instead, because the client derives its initial locale from `navigator` ([browser-derived initial locale](../feature/2026-07-31-browser-derived-initial-locale.md)), and `settings-chrome.e2e.ts` additionally covers both switch directions and the English-browser default.
 
 ### Expected outputs
 
diff --git a/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.zh.md b/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.zh.md
index e4132b2ebb..b850acf026 100644
--- a/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.zh.md
+++ b/.agents/notes/implemented/testing/2026-07-24-web-gui-browser-e2e-lane.zh.md
@@ -28,7 +28,7 @@ Web GUI 以一条真实组装链交付——chromium 页面 → client 插件 bu
 
 不做单次瞬态 DOM 断言：从回放产出到 React 提交的每一跳都可能合并分片，采样 `[data-streaming]` 天然就是竞态。流式输出的增量性由持久化的 `assistant/chunk` 事件断言（模型可见 ⟺ 已记录，使日志成为权威证据）。`dsh-llm-replay` 的可选 `paceMs`（默认缺省 = 突发）只是让浏览器观察到真正增量 SSE 的真实感旋钮；正确性绝不依赖它，且节奏等待期间中止会即时取消。
 
-每个场景都会因任何 pageerror 或客户端的连接丢失/间隙修复控制台警告而失败：否则重连机制加历史重同步会把一条死掉的 SSE 通路自愈掉，套件反而认证了坏 wire。Scaffold 的 `close()` 调用 `ReplayHandle.assertConsumed()` 收尾检查（每个已录脚本都被绑定、每个游标都耗尽），把静默的少放与错绑变成清晰诊断。车道不设 vitest 重试；每文件一个 chromium、每场景一个新 context、每场景一个 host；视口固定；交互选择器锚定 role、`data-*` 属性和可见文本，而 frame 与会话区采集则使用既有的 CSS 模块局部类名锚点。常规场景在客户端启动前设置 `dsh.locale=en`，使本地化的 role 定位器和预期输出统一采用明确指定的语言；只有 `settings-chrome.e2e.ts` 不预设该存储项，以覆盖默认中文状态及双向切换。
+每个场景都会因任何 pageerror 或客户端的连接丢失/间隙修复控制台警告而失败：否则重连机制加历史重同步会把一条死掉的 SSE 通路自愈掉，套件反而认证了坏 wire。Scaffold 的 `close()` 调用 `ReplayHandle.assertConsumed()` 收尾检查（每个已录脚本都被绑定、每个游标都耗尽），把静默的少放与错绑变成清晰诊断。车道不设 vitest 重试；每文件一个 chromium、每场景一个新 context、每场景一个 host；视口固定；交互选择器锚定 role、`data-*` 属性和可见文本，而 frame 与会话区采集则使用既有的 CSS 模块局部类名锚点。常规场景在客户端启动前设置 `dsh.locale=en`，使本地化的 role 定位器和预期输出统一采用明确指定的语言；断言中文文案的场景则不预设该存储项，改为开启 `zh-CN` 浏览器，因为客户端的初始 locale 由 `navigator` 推导（[由浏览器推导初始 locale](../feature/2026-07-31-browser-derived-initial-locale.md)），而 `settings-chrome.e2e.ts` 还额外覆盖双向切换与英文浏览器默认态。
 
 ### 预期输出
 
diff --git a/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.i18n.yaml b/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.i18n.yaml
index 9ce321434f..4603c65221 100644
--- a/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.i18n.yaml
+++ b/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.md
-2026-07-28-storage-root-and-derived-medium-recovery.md: 3937b17502d0bf640625e73822b758b1862b5391
-2026-07-28-storage-root-and-derived-medium-recovery.zh.md: ff2f196a911986d23b7a102e6336f353c6aef278
+2026-07-28-storage-root-and-derived-medium-recovery.md: 7759d0b6a8d522d6f853be0cd31a0b3909292446
+2026-07-28-storage-root-and-derived-medium-recovery.zh.md: 893b91c2ad3943cce9f64702e52afbb8075b907c
diff --git a/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.md b/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.md
index 3937b17502..7759d0b6a8 100644
--- a/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.md
+++ b/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.md
@@ -8,7 +8,7 @@ English | [中文](2026-07-28-storage-root-and-derived-medium-recovery.zh.md)
 
 The persisted projection cache ([RFC](2026-07-27-session-projection-and-command-log.md), shipped as `dsh-session-projection-cache`) surfaced two gaps in the storage substrate it landed on. Both are properties of the domain-KV stack ([design](2026-07-24-domain-kv-storage-and-workspace.md)), not of the cache itself, and both bite the cache first because it is the first *derived* medium on that stack.
 
-**Where the files actually live.** The shipped Web overlay gives the json backend a relative root — `root: './.storages'` (`apps/cli/config/web.cordis.yml`) — while the shared base defaults the session store to the global harness home (`$DSH_HOME/sessions`, default `~/.dsh/sessions`); no equivalent global root exists for `storage-json`. `JsonStorageBackend` never resolves its root either — each unit open joins the still-relative path against whatever `process.cwd()` is at that moment (packages/storage/storage-json/src/index.ts) — the exact hazard the JSONL session backend resolves-once to prevent ("later process.cwd() changes cannot split one backend across roots", packages/session-persistence/session-persistence-jsonl/src/index.ts). Net effect: session logs are global across launch directories, but `workspace.json` and `session_projcache.json` land under `/.storages/`. Two launches from different directories share their sessions yet see different workspace registries and different projection caches — and the cache exists precisely to serve the cross-session cold listing, which now misses for every session last cached under another launch directory.
+**Where the files actually live (root mismatch closed; resolve-once residual still open).** The shared base defaults the session store to the global harness home (`$DSH_HOME/sessions`, default `~/.dsh/sessions`), while the shipped Web overlay used to give the json backend the relative root `./.storages`: `workspace.json` and `session_projcache.json` landed under `/.storages/` — two launches from different directories shared their sessions yet saw different workspace registries and different projection caches, and the cache exists precisely to serve the cross-session cold listing, which missed for every session last cached under another launch directory. That mismatch is now closed: the overlay anchors `storage-json.root` to `$DSH_HOME/storages` with the same `!!js` expression the session root uses (`apps/cli/config/web.cordis.yml`). The residual hazard: `JsonStorageBackend` still never resolves its root — each unit open joins the path against whatever `process.cwd()` is at that moment (packages/storage/storage-json/src/index.ts); the shipped overlay root is already absolute and unaffected, but any relative root (bare Loader boots, tests) still splits on a later cwd change — the exact hazard the JSONL session backend resolves-once to prevent ("later process.cwd() changes cannot split one backend across roots", packages/session-persistence/session-persistence-jsonl/src/index.ts).
 
 **How recovery works today.** Inside a healthy medium the cache is fully self-healing by design: a `stateVersion`-mismatched row is discarded and refolded, a log shrunk below a row's watermark is detected by the anchored restore floor and answered with one full re-read, and every background write is fail-soft. But at the *medium* level there is no recovery at all: a truncated, hand-edited, or version-bumped `session_projcache.json` fails `openJsonUnit` with `malformed-medium`/`version-mismatch` (packages/storage/storage-json/src/format.ts), a schema-drifted record fails domain open with `invalid-record` (packages/storage/storage-domain/src/index.ts), the rejection propagates through `SessionProjectionCache[Service.init]`, and under the CLI's fail-loud boot the assembly refuses to start. A file whose entire content is rebuildable from session logs can brick boot. This contradicts the cache package's own stated stance ("a stale or unreadable cache costs a longer tail replay, never a wrong value") and the cache domain spec's JSDoc ("version bumps discard the whole medium"), which today describes an aspiration, not the implementation. The same fail-loud path is *correct* for `workspace.json` — workspace records are authoritative, not derivable — so the missing concept is a per-domain declaration of authority, not a global behavior change.
 
@@ -16,11 +16,11 @@ The persisted projection cache ([RFC](2026-07-27-session-projection-and-command-
 
 Two independent changes, one per gap.
 
-### One global storage root, resolved once
+### One global storage root (shipped, amended form); resolved once at construction (still open)
 
-- `AppCLIEntry.composePatches` Source 0 additionally patches `storage-json.root` to `join(resolveDshHome(), 'storages')` — `~/.dsh/storages` by default, beside `~/.dsh/sessions` — and `PROFILE_MAPPINGS` gains `storageRoot` → (`storage-json`, `root`), mirroring `persistenceRoot` exactly. The yml keeps `./.storages` as the raw-composition engineering default (tests and bare Loader boots are unaffected), same layering as the session root today.
-- `JsonStorageBackend` resolves its configured root once at construction (`resolve(config.root)`), adopting the JSONL backend's recorded rationale verbatim: a later `process.cwd()` change must not split one backend across roots. The SQLite storage backend already resolves its path.
-- Pre-release stance applies: no migration shim. A deployment that cached under `/.storages` re-derives everything (workspace re-bootstraps from the header index; the projection cache refolds lazily) or moves the two json files by hand once.
+- **Shipped**: the Web overlay anchors `storage-json.root` to `$DSH_HOME/storages` directly in the row, with the same `!!js` IIFE the session root uses (`~/.dsh/storages` by default, beside `~/.dsh/sessions`; no leading dot — the home is already a hidden tree). The user ruled this form in over this section's original launcher-patch + `storageRoot` profile key (see Alternatives); per-row overrides ride the personal `~/.dsh/config.yaml` patch layer. The verbatim duplication of the expression against the session root (`base.cordis.yml`) is a known cost — acceptable at two consumers; a third `$DSH_HOME`-derived root triggers extracting a single source (a launcher variable or a shared expression). The web e2e scaffold already patches the row to an absolute temp root, so tests never touch the user's home.
+- **Still open**: `JsonStorageBackend` resolves its configured root once at construction (`resolve(config.root)`), adopting the JSONL backend's recorded rationale verbatim: a later `process.cwd()` change must not split one backend across roots. The SQLite storage backend already resolves its path.
+- Pre-release stance applies (and was executed): no migration shim. A deployment that cached under `/.storages` re-derives everything (workspace re-bootstraps from the header index; the projection cache refolds lazily) or moves the two json files by hand once.
 
 ### Declared derived media: reset instead of reject
 
@@ -31,7 +31,9 @@ Two independent changes, one per gap.
 
 ## Alternatives considered
 
-**Keep per-launch-directory `.storages` (status quo)** — rejected: sessions are global, so every derived-from-sessions medium splits against its own source of truth; the cache's motivating scenario (one listing over all sessions) structurally misses rows, and the workspace registry indexes sessions it cannot see from another launch directory.
+**Keep per-launch-directory `.storages` (the pre-change status quo)** — rejected: sessions are global, so every derived-from-sessions medium splits against its own source of truth; the cache's motivating scenario (one listing over all sessions) structurally misses rows, and the workspace registry indexes sessions it cannot see from another launch directory.
+
+**Launcher patch + a `storageRoot` profile key (this section's original form)** — not taken: one `!!js` yml expression reaches the global root with the same layering the session root already has; a launcher patch adds a second rewrite point, and the profile key is an empty seat until a real consumer exists (per-row overrides already have the personal config.yaml patch layer).
 
 **Patch only the projection cache's route to a global root, leave `workspace.json` per-cwd** — rejected: the workspace registry has the identical global-vs-cwd mismatch, and the user decision that shaped the cache placed it deliberately beside `workspace.json` — one hub root keeps the media co-located and the mental model single.
 
@@ -45,7 +47,7 @@ Two independent changes, one per gap.
 
 ## Acceptance criteria
 
-- `dsh` launched from any directory reads and writes the same `$DSH_HOME/storages/*.json` (default `~/.dsh/storages`); the profile key `storageRoot` overrides it; a raw Loader boot of the yml still lands in `./.storages` relative to the boot cwd, resolved once at backend construction.
+- `dsh` launched from any directory reads and writes the same `$DSH_HOME/storages/*.json` (default `~/.dsh/storages`) — already satisfied by the overlay expression; per-row overrides ride the personal config.yaml patch layer; the backend resolves a relative root once at construction (still to do).
 - With a truncated, version-bumped, or schema-drifted `session_projcache.json`, the assembly boots clean: one warning names the discarded medium, the file is gone, the cache rebuilds through normal operation, and the cold listing column reappears as sessions are re-checkpointed.
 - The same damage to `workspace.json` still fails boot loudly.
 - Facility tests cover: each damage class resets a `'reset'` domain exactly once; non-damage failures stay loud on a `'reset'` domain; a `'reject'` domain propagates every failure; `destroy` removes the medium on both shipped backends.
diff --git a/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.zh.md b/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.zh.md
index ff2f196a91..893b91c2ad 100644
--- a/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.zh.md
+++ b/.agents/notes/proposed/architecture/2026-07-28-storage-root-and-derived-medium-recovery.zh.md
@@ -8,7 +8,7 @@ Status: proposed
 
 持久投影缓存（[RFC](2026-07-27-session-projection-and-command-log.md)，已作为 `dsh-session-projection-cache` 落地）暴露了它所依托的存储基座的两个缺口。二者都是 domain-KV 栈（[设计](2026-07-24-domain-kv-storage-and-workspace.md)）的属性而非缓存自身的问题，且都首先咬到缓存——因为它是这条栈上第一个*派生*介质。
 
-**文件到底存在哪。** 出厂 Web overlay 给 json 后端的是相对根目录——`root: './.storages'`（`apps/cli/config/web.cordis.yml`）——而共享 base 将会话存储默认为全局 harness home（`$DSH_HOME/sessions`，默认 `~/.dsh/sessions`）；`storage-json` 没有对应的全局根目录。`JsonStorageBackend` 自己也从不 resolve 根——每次打开 unit 都把仍然相对的路径 join 到当时的 `process.cwd()` 上（packages/storage/storage-json/src/index.ts）——这正是 JSONL 会话后端用「构造时 resolve 一次」防住的那个隐患（"later process.cwd() changes cannot split one backend across roots"，packages/session-persistence/session-persistence-jsonl/src/index.ts）。净效果：会话日志跨启动目录全局共享，但 `workspace.json` 和 `session_projcache.json` 落在 `<启动目录>/.storages/` 下。从两个不同目录启动，会话相同，工作区注册表和投影缓存却各是一份——而缓存存在的意义恰恰是跨会话冷列表，如今凡是上次在别的启动目录下缓存过的会话全部 miss。
+**文件到底存在哪（根错位已收口，resolve-once 残余仍开放）。** 共享 base 将会话存储默认为全局 harness home（`$DSH_HOME/sessions`，默认 `~/.dsh/sessions`），而出厂 Web overlay 曾给 json 后端相对根 `./.storages`：`workspace.json` 和 `session_projcache.json` 落在 `<启动目录>/.storages/` 下——从两个不同目录启动，会话相同，工作区注册表和投影缓存却各是一份，而缓存存在的意义恰恰是跨会话冷列表，凡上次在别的启动目录下缓存过的会话全部 miss。这一错位已消除：overlay 现以与会话根同一段 `!!js` 表达式把 `storage-json.root` 锚定到 `$DSH_HOME/storages`（`apps/cli/config/web.cordis.yml`）。残余隐患：`JsonStorageBackend` 仍从不 resolve 根——每次打开 unit 都把路径 join 到当时的 `process.cwd()` 上（packages/storage/storage-json/src/index.ts）；出厂 overlay 的根已是绝对路径不受影响，但任何相对根（裸 Loader 启动、测试）仍会被后续 cwd 变化劈开，JSONL 会话后端用「构造时 resolve 一次」防住的正是它（"later process.cwd() changes cannot split one backend across roots"，packages/session-persistence/session-persistence-jsonl/src/index.ts）。
 
 **现在是怎么恢复的。** 在健康介质内部，缓存按设计完全自愈：`stateVersion` 不匹配的行被丢弃重折，日志缩短到行水位以下由带锚的 restore floor 检出并以一次全量重读回答，每次后台写都是 fail-soft。但在*介质*层面完全没有恢复：被截断、被手改或版本被 bump 的 `session_projcache.json` 会让 `openJsonUnit` 以 `malformed-medium`/`version-mismatch` 失败（packages/storage/storage-json/src/format.ts），schema 漂移的记录让域 open 以 `invalid-record` 失败（packages/storage/storage-domain/src/index.ts），拒绝一路穿过 `SessionProjectionCache[Service.init]`，在 CLI 的 fail-loud 启动下整个组装拒绝启动。一个内容完全可从会话日志重建的文件能把启动搞死。这与缓存包自己声明的立场（"a stale or unreadable cache costs a longer tail replay, never a wrong value"）和缓存域 spec 的 JSDoc（"version bumps discard the whole medium"）相矛盾——后者今天描述的是愿望而非实现。同一条 fail-loud 路径对 `workspace.json` 却是*正确*的——工作区记录是权威数据，不可派生——所以缺的概念是按域声明权威性，而不是全局改行为。
 
@@ -16,11 +16,11 @@ Status: proposed
 
 两个独立改动，一个缺口一个。
 
-### 全局唯一存储根，构造时 resolve 一次
+### 全局唯一存储根（已落地，形态修正）；构造时 resolve 一次（仍开放）
 
-- `AppCLIEntry.composePatches` 的 Source 0 追加把 `storage-json.root` patch 到 `join(resolveDshHome(), 'storages')`——默认 `~/.dsh/storages`，与 `~/.dsh/sessions` 并肩——并且 `PROFILE_MAPPINGS` 增加 `storageRoot` →（`storage-json`，`root`），与 `persistenceRoot` 完全镜像。yml 保留 `./.storages` 作为裸组合的工程默认（测试和裸 Loader 启动不受影响），分层方式与今天的会话根相同。
-- `JsonStorageBackend` 在构造时对配置根 `resolve` 一次，原样采纳 JSONL 后端已记录的理由：后续 `process.cwd()` 变化不得把一个后端劈到多个根下。SQLite 存储后端已经 resolve 其路径。
-- 适用 pre-release 立场：不做迁移垫片。曾在 `/.storages` 下缓存过的部署要么全部重新派生（工作区从 header 索引重新 bootstrap；投影缓存惰性重折），要么手动把两个 json 文件挪一次。
+- **已落地**：出厂 Web overlay 直接在 `storage-json` 行内用与会话根同一段 `!!js` IIFE 把 `root` 锚定到 `$DSH_HOME/storages`（默认 `~/.dsh/storages`，与 `~/.dsh/sessions` 并肩；目录名不带点——home 本身已是隐藏树）。用户拍板采用此形态取代本节初版的「launcher patch + `storageRoot` profile 键」（见 Alternatives）；按行覆盖仍走个人 `~/.dsh/config.yaml` patch 层。该表达式与 sessions 根（`base.cordis.yml`）逐字重复是已知代价——两个消费者尚可接受；出现第三个 `$DSH_HOME` 派生根时提取单一来源（launcher 变量或共享表达式）。web e2e scaffold 本就把该行 patch 到临时绝对根，测试不触用户 home。
+- **仍开放**：`JsonStorageBackend` 在构造时对配置根 `resolve` 一次，原样采纳 JSONL 后端已记录的理由：后续 `process.cwd()` 变化不得把一个后端劈到多个根下。SQLite 存储后端已经 resolve 其路径。
+- 适用 pre-release 立场（已按此执行）：不做迁移垫片。曾在 `/.storages` 下缓存过的部署要么全部重新派生（工作区从 header 索引重新 bootstrap；投影缓存惰性重折），要么手动把两个 json 文件挪一次。
 
 ### 声明派生介质：损坏时重置而非拒绝
 
@@ -31,7 +31,9 @@ Status: proposed
 
 ## Alternatives considered
 
-**保持按启动目录的 `.storages`（现状）**——拒绝：会话是全局的，所以每个从会话派生的介质都与自己的真源劈叉；缓存的动机场景（一次列出全部会话）结构性丢行，工作区注册表索引着从另一个启动目录看不见的会话。
+**保持按启动目录的 `.storages`（改动前现状）**——拒绝：会话是全局的，所以每个从会话派生的介质都与自己的真源劈叉；缓存的动机场景（一次列出全部会话）结构性丢行，工作区注册表索引着从另一个启动目录看不见的会话。
+
+**launcher patch + `storageRoot` profile 键（本节初版提案形态）**——未采：一行 yml `!!js` 表达式即达全局根，与会话根的既有分层完全一致；launcher patch 多引入一个改写点，profile 键在有真实消费者前是空席（按行覆盖已有个人 config.yaml patch 层可用）。
 
 **只把投影缓存的 route 指到全局根，`workspace.json` 留在 per-cwd**——拒绝：工作区注册表有一模一样的全局 vs per-cwd 错位，而且塑造缓存的用户决策就是刻意把它放在 `workspace.json` 旁边——一个 hub 根让介质同址、心智模型单一。
 
@@ -45,7 +47,7 @@ Status: proposed
 
 ## Acceptance criteria
 
-- 从任意目录启动 `dsh` 都读写同一份 `$DSH_HOME/storages/*.json`（默认 `~/.dsh/storages`）；profile 键 `storageRoot` 可覆盖；裸 Loader 启动 yml 仍落在相对启动 cwd 的 `./.storages`,并在后端构造时 resolve 一次。
+- 从任意目录启动 `dsh` 都读写同一份 `$DSH_HOME/storages/*.json`（默认 `~/.dsh/storages`）——已由 overlay 表达式满足，按行覆盖走个人 config.yaml patch 层；后端对相对根在构造时 resolve 一次（待做）。
 - `session_projcache.json` 被截断、版本 bump 或 schema 漂移时，组装干净启动：一条警告命名被丢弃的介质，文件消失，缓存经正常运转重建，冷列表列随会话重新 checkpoint 逐步回归。
 - 同样的损坏发生在 `workspace.json` 上仍大声拒绝启动。
 - facility 测试覆盖：每个损坏类恰好重置一次 `'reset'` 域；非损坏失败在 `'reset'` 域上保持大声；`'reject'` 域传播一切失败；`destroy` 在两个出厂后端上都移除介质。
diff --git a/.gitattributes b/.gitattributes
index a51c5e7b5e..2efafac8b8 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -5,3 +5,5 @@
 # for cmd.exe), add a `*.bat text eol=crlf` override AFTER this line — the
 # in-repo form stays LF; CRLF becomes checkout-time presentation only.
 * text=auto eol=lf
+
+*.pdf binary
diff --git a/README.i18n.yaml b/README.i18n.yaml
index afdb75f1aa..6fbb7f5299 100644
--- a/README.i18n.yaml
+++ b/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write README.md
-README.md: b17098a4fee2354dfb2015afe34582f725b59df1
-README.zh.md: 9a17f76608e23719d27e9eb43d01582987adb3bf
+README.md: 08ae0b3d5d2d7ad8e7cb62bd5e8b3242426735dc
+README.zh.md: 9587215b6b17250504877b8930fdf431fd24b2ac
diff --git a/README.md b/README.md
index b17098a4fe..08ae0b3d5d 100644
--- a/README.md
+++ b/README.md
@@ -8,13 +8,11 @@ It uses an architecture where **everything is a plugin**.
 
 ## Internal testing notice
 
-Thank you for taking the time to try DeepSeek Harness.
+感谢您愿意拨冗试用 DeepSeek Harness。当前版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。
 
-This version is still in internal testing. Its functionality still needs improvement, and the experience may feel a little rough.
+“如切如磋，如琢如磨。” 产品的成长，离不开一次次真实的碰撞与坦诚的反馈。您在真实使用中发现的问题，也可能促使我们重新审视，甚至推翻已有的设计。
 
-“As one cuts and files, as one chisels and polishes.” A product grows through real encounters and candid feedback. Problems you discover in real use may prompt us to reconsider—or even overturn—our existing designs.
-
-We especially want to hear about failures, confusion, and friction. If you have any feedback or suggestions, please leave us a message in our WeCom group. Every piece of feedback helps us refine it.
+为了帮助我们更准确地还原您真实使用中的问题，内测版本默认会上传所有 Session Log；如需关闭，可以设置环境变量 `DSH_TELEMETRY_DISABLED=1`。另外，如果您有任何反馈与建议，请在企业微信群中留言告诉我们。每一条反馈，都会帮助我们把它打磨得更好。
 
 ## Install
 
diff --git a/README.zh.md b/README.zh.md
index 9a17f76608..9587215b6b 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -8,13 +8,11 @@ DeepSeek Harness（`dsh`）是一款基于 DeepSeek Harness SDK 构建的开源
 
 ## 内测声明
 
-感谢您愿意拨冗试用 DeepSeek Harness。
-
-目前的版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。
+感谢您愿意拨冗试用 DeepSeek Harness。当前版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。
 
 “如切如磋，如琢如磨。” 产品的成长，离不开一次次真实的碰撞与坦诚的反馈。您在真实使用中发现的问题，也可能促使我们重新审视，甚至推翻已有的设计。
 
-我们尤其希望听见那些失败、困惑与不顺手的时刻——如果您有任何反馈与建议，请在企业微信群中留言告诉我们。每一条反馈，都会帮助我们把它打磨得更好。
+为了帮助我们更准确地还原您真实使用中的问题，内测版本默认会上传所有 Session Log；如需关闭，可以设置环境变量 `DSH_TELEMETRY_DISABLED=1`。另外，如果您有任何反馈与建议，请在企业微信群中留言告诉我们。每一条反馈，都会帮助我们把它打磨得更好。
 
 ## 安装
 
diff --git a/apps/cli/README.i18n.yaml b/apps/cli/README.i18n.yaml
index bce3099226..4cbe9469d1 100644
--- a/apps/cli/README.i18n.yaml
+++ b/apps/cli/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write apps/cli/README.md
-README.md: db4489c6087f5e844dcc2dda723d208c8137186d
-README.zh.md: 7880e98459a844cdb8124ed89c0ef90ea6301868
+README.md: 4b4367b9e92761361855828dad35e50fa1fa3ef0
+README.zh.md: 2c77f92b90366e7d3516d714513eb833d5cf7aaf
diff --git a/apps/cli/README.md b/apps/cli/README.md
index db4489c608..4b4367b9e9 100644
--- a/apps/cli/README.md
+++ b/apps/cli/README.md
@@ -3,7 +3,7 @@
 English | [中文](README.zh.md)
 
 
-Argv is parsed once through a [Commander](https://github.com/tj/commander.js) adapter ([`src/args.ts`](src/args.ts)): one program whose default (no subcommand) is the TUI/headless surface (`--config`, `-p`/`--prompt`, `--resume`), whose `meta` subcommand is the same TUI over this checkout, whose `upgrade` subcommand is an option-less guided-session entry, and whose `web` subcommand is the browser UI. `src/bin.ts` switches on the resolved mode and dynamic-imports only that mode's module. `dsh --help` lists every mode and `dsh web --help` renders the web usage, `dsh --version` prints this app's version, and an unknown option or a mistyped `--resume` fails loud (stderr, exit 1) instead of misrouting. Every subcommand that shares no option with the default surface — `upgrade`, `web`, `meta` — rejects a leaked `--config`/`-p`/`--resume` rather than running and dropping it. `dsh web`'s `--host`/`--port` are unvalidated pass-through overrides: the `dsh-host-webserver` schema is the single source of both the default (the shipped Web overlay value when a flag is absent) and validity, and rejects a bad value at boot. `--trusted-host` appends named authorities for the /api browser-trust fence; an all-interfaces bind additionally derives the machine's LAN IP literals itself ([`src/app-cli-entry.ts`](src/app-cli-entry.ts)), so the printed LAN URL works without flags.
+Argv is parsed once through a [Commander](https://github.com/tj/commander.js) adapter ([`src/args.ts`](src/args.ts)): one program whose default (no subcommand) is the TUI/headless surface (`--config`, `-p`/`--prompt`, `--resume`, `--dump-config`, `--dump-default-config`), whose `meta` subcommand is the same TUI over this checkout, whose `upgrade` subcommand is an option-less guided-session entry, and whose `web` subcommand is the browser UI. `src/bin.ts` switches on the resolved mode and dynamic-imports only that mode's module. `dsh --help` lists every mode and `dsh web --help` renders the web usage, `dsh --version` prints this app's version, and an unknown option or a mistyped `--resume` fails loud (stderr, exit 1) instead of misrouting. Every subcommand that shares no option with the default surface — `upgrade`, `web`, `meta` — rejects a leaked `--config`/`-p`/`--resume`/dump flag rather than running and dropping it. `dsh web`'s `--host`/`--port` are unvalidated pass-through overrides: the `dsh-host-webserver` schema is the single source of both the default (the shipped Web overlay value when a flag is absent) and validity, and rejects a bad value at boot. `--trusted-host` appends named authorities for the /api browser-trust fence; an all-interfaces bind additionally derives the machine's LAN IP literals itself ([`src/app-cli-entry.ts`](src/app-cli-entry.ts)), so the printed LAN URL works without flags.
 
 The TUI surface:
 
@@ -18,10 +18,14 @@ The TUI surface:
 
 `dsh upgrade` is a guided fresh-session entry over the default TUI surface: it mints a fresh session in the invoking directory and seeds its first turn with the bundled `dsh-upgrade` skill, exactly as if the user typed `/skill:`. The launcher passes the skill name on the boot context ([`INITIAL_SKILL_KEY`](../../packages/ui/tui/README.md)), which the TUI auto-invokes once the chat is live. Both take no options — `--config`, `-p`, and `--resume` fail loud — and seed only on this first launch, so a later `dsh --resume ` of the session is an ordinary TUI session with no re-injection.
 
+`dsh --dump-config` and `dsh web --dump-config` print the composed config tree — the shipped base, the surface overlay, and the `--config` or personal overlay, exactly the layers that surface would boot — as YAML on stdout and exit without booting; `--dump-default-config` stops at the surface overlay, so diffing the two shows precisely what the user layer changes. Each run of rows is preceded by a `# ==` comment naming the file it comes from and the layers that patched it (e.g. `# == base.cordis.yml, patched by tui.cordis.yml`), so the output shows provenance while staying one loadable document. Composition runs through the include's own patch algorithm and YAML dialect (`applyEntryPatches`/`entryListSchema` from `@cordisjs/plugin-include`), so the dump cannot drift from what boots; `!!js` expressions print verbatim and unevaluated, and a patch whose target row is absent is reported on stderr with its layer, mirroring the Loader's boot-time warning. Launcher-owned boot-context values (session identity, CLI-flag patches) are per-invocation facts outside the config tree and do not appear. The dump flags reject boot-only flags (`-p`, `--resume`, `--config-replace`) rather than silently ignoring them, and `--dump-default-config` takes no `--config`.
+
 The Web and headless surfaces boot `base.cordis.yml` plus `web.cordis.yml`, then apply `$DSH_HOME/config.yaml`; an explicit `--config ` replaces that personal overlay. Both surfaces otherwise share the same composition: both treat the invoking directory as the default project and Workspace root, create named Workspaces beneath that root unless `--workspace-root ` overrides it, load applicable `AGENTS.md`/`CLAUDE.md` instructions into each agent-loop request prefix with a 65,536-byte render budget, opt into first-message model titles, use the same bounded transient model-request retry policy as the TUI, and mount a disposable in-memory SQLite content-index service. That service is ACTIVE at boot, while its `node:sqlite` module and database handle open only on the first content search. This keeps Node 22 startup output free of SQLite's experimental warning before search is used; the first actual search may still emit the runtime warning. Each service instance owns its database, so parallel invocations neither share unsupported SQLite state nor leave derived index files behind, and the first search lazily reconciles live and persisted logs. Headless differs only in listening on an OS-assigned port (parallel `dsh -p` runs never collide; the stderr-printed URL opens the live session in a browser). Both need the frontend dist and client bundles built (`pnpm run build && pnpm run build:web`).
 
 The shipped TUI and Web compositions register the native DeepSeek adapter plus pi-ai OpenAI and Anthropic profiles. Credentials and endpoint overrides come from the provider-standard `DEEPSEEK_API_KEY` / `DEEPSEEK_BASE_URL`, `OPENAI_API_KEY` / `OPENAI_BASE_URL`, and `ANTHROPIC_API_KEY` / `ANTHROPIC_BASE_URL` pairs in the boot's layered environment.
 
+The Web/headless composition also registers only `web_search`. Search uses DeepSeek's Anthropic-compatible Messages endpoint, resolves the same `DEEPSEEK_API_KEY` reference for every call, and accepts the separate `DEEPSEEK_SEARCH_BASE_URL` endpoint override; each search is an auxiliary model request with its own latency and token cost. `web_fetch` remains disabled and the composition mounts no default fetch provider, so deployments that need arbitrary page retrieval must opt in through an overlay. The TUI composition does not mount Web tools by default. The deployment decision and its security boundary live in the [default Web search Agent Note](../../.agents/notes/implemented/feature/2026-07-31-web-default-search.md).
+
 `DSH_TOOLS_MODE` selects the tool presentation mode for the whole Web/headless process: `native` (the schema default when unset), `code` (the `run_code`-only Code Mode wire), or `both`; any other value fails loud at boot through the `dsh-tools` config schema. It is a TEMPORARY seam — process-wide because Loader composition is static — and is removed once the web UI owns per-session tool-mode selection; the TUI surface ignores it (its config tree pins its own mode).
 
 Every `dsh` surface — TUI, Web, and headless — reports session telemetry by default (the row lives in the shared `base.cordis.yml`): every session-log event streams as OTLP/HTTP log records to `https://harness-telemetry.deepseeksvc.com/v1/logs` on a 10-second batch cadence. `DSH_TELEMETRY_OTLP_URL` points the exporter at a different collector; setting `DSH_TELEMETRY_DISABLED` to ANY non-empty value — including `0` or `false` — disables the row before it loads (a privacy switch prefers off-by-mistake over on-by-mistake). No redaction rule is mounted in this composition yet: exported records are the raw captured copy, including message text, tool arguments and results, and the session's working-directory path. The deployment rulings live in the [web-telemetry-default-mount Agent Note](../../.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.md).
diff --git a/apps/cli/README.zh.md b/apps/cli/README.zh.md
index 7880e98459..2c77f92b90 100644
--- a/apps/cli/README.zh.md
+++ b/apps/cli/README.zh.md
@@ -3,7 +3,7 @@
 [English](README.md) | 中文
 
 
-Argv 只会通过 [Commander](https://github.com/tj/commander.js) 适配器（[`src/args.ts`](src/args.ts)）解析一次：同一个程序的默认形式（无子命令）是 TUI／无头界面（`--config`、`-p`/`--prompt`、`--resume`），`meta` 子命令是以本 checkout 为 workspace 的同一个 TUI，`upgrade` 子命令是无选项的引导会话入口，`web` 子命令则是浏览器 UI。`src/bin.ts` 按解析后的 mode 分支，仅动态导入该 mode 的模块。`dsh --help` 列出所有 mode，`dsh web --help` 渲染 Web 用法，`dsh --version` 打印此应用的版本；未知选项或拼错的 `--resume` 会明确报错（stderr，退出码 1），而不会被错路由。凡与默认界面不共享任何选项的子命令（`upgrade`、`web`、`meta`）都会拒绝泄漏进来的 `--config`/`-p`/`--resume`，而不会照常运行并丢弃它。`dsh web` 的 `--host`/`--port` 是未验证的直通覆盖：`dsh-host-webserver` schema 是默认值（标志缺失时使用已交付的 Web 覆盖层值）和有效性的唯一真源，并在启动时拒绝错误值。`--trusted-host` 为 /api 浏览器信任栅栏追加具名权威；全接口绑定还会自行推导本机的 LAN IP 字面量（[`src/app-cli-entry.ts`](src/app-cli-entry.ts)），因此打印出的 LAN URL 无需任何标志即可使用。
+Argv 只会通过 [Commander](https://github.com/tj/commander.js) 适配器（[`src/args.ts`](src/args.ts)）解析一次：同一个程序的默认形式（无子命令）是 TUI／无头界面（`--config`、`-p`/`--prompt`、`--resume`、`--dump-config`、`--dump-default-config`），`meta` 子命令是以本 checkout 为 workspace 的同一个 TUI，`upgrade` 子命令是无选项的引导会话入口，`web` 子命令则是浏览器 UI。`src/bin.ts` 按解析后的 mode 分支，仅动态导入该 mode 的模块。`dsh --help` 列出所有 mode，`dsh web --help` 渲染 Web 用法，`dsh --version` 打印此应用的版本；未知选项或拼错的 `--resume` 会明确报错（stderr，退出码 1），而不会被错路由。凡与默认界面不共享任何选项的子命令（`upgrade`、`web`、`meta`）都会拒绝泄漏进来的 `--config`/`-p`/`--resume`/dump 标志，而不会照常运行并丢弃它。`dsh web` 的 `--host`/`--port` 是未验证的直通覆盖：`dsh-host-webserver` schema 是默认值（标志缺失时使用已交付的 Web 覆盖层值）和有效性的唯一真源，并在启动时拒绝错误值。`--trusted-host` 为 /api 浏览器信任栅栏追加具名权威；全接口绑定还会自行推导本机的 LAN IP 字面量（[`src/app-cli-entry.ts`](src/app-cli-entry.ts)），因此打印出的 LAN URL 无需任何标志即可使用。
 
 TUI 界面：
 
@@ -18,10 +18,14 @@ TUI 界面：
 
 `dsh upgrade` 是默认 TUI 界面之上的引导式全新会话入口：它在调用目录中创建一个全新会话，并以内置 `dsh-upgrade` skill 播种其首轮，效果等同于用户手动键入 `/skill:`。启动器将 skill 名称提供到启动上下文（[`INITIAL_SKILL_KEY`](../../packages/ui/tui/README.md)），TUI 在聊天就绪后自动调用它。两者都不接受任何选项——`--config`、`-p`、`--resume` 都会明确报错——且仅在首次启动时播种，因此之后 `dsh --resume ` 恢复该会话时是普通 TUI 会话，不会重复注入。
 
+`dsh --dump-config` 和 `dsh web --dump-config` 把合成后的配置树——已交付的基础配置、界面覆盖层，以及 `--config` 或个人覆盖层，恰好是该界面启动时组装的那些层——以 YAML 打印到 stdout 后退出，不启动任何东西；`--dump-default-config` 止步于界面覆盖层，因此对两份输出做 diff 就能精确看出用户层改了什么。每段连续的行之前都有一条 `# ==` 注释，标明该段来自哪个文件以及被哪些层修补过（例如 `# == base.cordis.yml, patched by tui.cordis.yml`），因此输出既展示来源，又仍是一份可加载的文档。合成通过 include 自己的补丁算法和 YAML 方言（`@cordisjs/plugin-include` 的 `applyEntryPatches`/`entryListSchema`）完成，因此 dump 不可能与实际启动漂移；`!!js` 表达式原样打印、不求值，目标行不存在的补丁会连同其所在层报到 stderr，与 Loader 启动时的警告一致。由启动器持有的启动上下文值（会话身份、CLI 标志补丁）是每次调用的事实，位于配置树之外，不会出现。dump 标志会拒绝仅用于启动的标志（`-p`、`--resume`、`--config-replace`）而不是静默忽略它们，`--dump-default-config` 不接受 `--config`。
+
 Web 和无头界面启动 `base.cordis.yml` 与 `web.cordis.yml`，随后应用 `$DSH_HOME/config.yaml`；显式的 `--config ` 会替代该个人覆盖。除此之外，两者共享同一套组合：两者都将调用目录视为默认项目和 Workspace 根目录，除非通过 `--workspace-root ` 覆盖，否则会在该根目录下创建具名 Workspace；它们会把适用的 `AGENTS.md`/`CLAUDE.md` 指令加载到每个 agent-loop 请求前缀中，渲染预算为 65,536 字节，选用首条消息模型标题，采用与 TUI 相同的有界暂时性模型请求重试策略，并挂载一个可丢弃的内存 SQLite 内容索引服务。该服务在启动时处于 ACTIVE 状态，但其 `node:sqlite` 模块与数据库句柄分别要到首次内容搜索才会导入和打开。这样可使 Node 22 在尚未使用搜索时的启动输出不出现 SQLite 实验性警告；首次实际搜索仍可能发出运行时警告。每个服务实例独占自己的数据库，因此并行调用既不会共享不受支持的 SQLite 状态，也不会留下派生索引文件，首次搜索还会惰性对账实时日志与持久化日志。无头界面唯一的差异是监听操作系统分配的端口（并行 `dsh -p` 运行绝不冲突；stderr 打印的 URL 会在浏览器中打开实时会话）。两者都需要先构建前端 dist 和客户端 bundle（`pnpm run build && pnpm run build:web`）。
 
 已交付的 TUI 和 Web 组合会注册原生 DeepSeek 适配器，以及 pi-ai 的 OpenAI 和 Anthropic 提供方配置。凭据和端点覆盖来自启动分层环境中的提供方标准变量对：`DEEPSEEK_API_KEY` / `DEEPSEEK_BASE_URL`、`OPENAI_API_KEY` / `OPENAI_BASE_URL` 和 `ANTHROPIC_API_KEY` / `ANTHROPIC_BASE_URL`。
 
+Web／无头组合还只会注册 `web_search`。搜索使用 DeepSeek 的 Anthropic 兼容 Messages 端点，每次调用都会解析同一个 `DEEPSEEK_API_KEY` 凭据引用，并接受独立的 `DEEPSEEK_SEARCH_BASE_URL` 端点覆盖；每次搜索都是一次辅助模型请求，会产生独立的延迟与 token 成本。`web_fetch` 仍处于禁用状态，组合也未挂载默认抓取提供方；需要任意页面抓取能力的部署必须通过覆盖层选择启用。TUI 组合默认不挂载 Web 工具。部署决策及其安全边界见[默认 Web 搜索 Agent Note](../../.agents/notes/implemented/feature/2026-07-31-web-default-search.md)。
+
 `DSH_TOOLS_MODE` 为整个 Web／无头进程选择工具呈现模式：可选值为 `native`（未设置时的 schema 默认值）、`code`（仅含 `run_code` 的 Code Mode 协议接口）或 `both`；任何其他值都会经由 `dsh-tools` 配置 schema 在启动时明确报错。它是一个临时 seam：Loader 组合是静态的，因此该设置作用于整个进程；待 Web UI 负责逐会话工具模式选择后便会移除。TUI 界面会忽略该变量（其配置树固定了自身模式）。
 
 每个 `dsh` 界面——TUI、Web 与无头——都默认上报会话遥测（该行位于共享的 `base.cordis.yml`）：每条会话日志事件以 OTLP/HTTP 日志记录的形式、按 10 秒批处理节奏流向 `https://harness-telemetry.deepseeksvc.com/v1/logs`。`DSH_TELEMETRY_OTLP_URL` 可将 exporter 指向其他 collector；将 `DSH_TELEMETRY_DISABLED` 设为**任意非空值**——包括 `0` 或 `false`——都会在该行加载前将其关停（隐私开关取「宁可误关、不可误开」）。该组合当前未挂载任何脱敏规则：导出记录即原始捕获副本，包含消息正文、工具参数与结果、以及会话工作目录路径。部署口径见 [web-telemetry-default-mount Agent Note](../../.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.md)。
diff --git a/apps/cli/config/web.cordis.yml b/apps/cli/config/web.cordis.yml
index a67d95ff6b..238b3788fe 100644
--- a/apps/cli/config/web.cordis.yml
+++ b/apps/cli/config/web.cordis.yml
@@ -80,6 +80,28 @@
 - id: fs-local
   disabled: true
 
+# The Web/headless product enables only the stable web_search model surface.
+# DeepSeek search resolves the same DEEPSEEK_API_KEY credential the Models page
+# manages for chat, at each search; its Messages endpoint is separate from the
+# chat-completions endpoint. Fetch remains disabled and no default fetch
+# provider is mounted.
+- insert:
+    - id: web
+      name: '@deepseek-ai/dsh-web'
+      config:
+        searchProvider: deepseek-official
+
+    - id: web-search-deepseek
+      name: '@deepseek-ai/dsh-web-search-deepseek'
+      config:
+        apiKeyEnv: DEEPSEEK_API_KEY
+        baseURL: !!js process.env.DEEPSEEK_SEARCH_BASE_URL
+
+    - id: tool-web
+      name: '@deepseek-ai/dsh-tool-web'
+      config:
+        fetch: false
+
 # ── web-only host rows, the transport layer, and the browser roster ─────────
 
 # `dshClient` rows are the browser roster the modules node half scans into
@@ -97,7 +119,8 @@
     - id: storage-json
       name: '@deepseek-ai/dsh-storage-json'
       config:
-        root: './.storages'
+        root: !!js >-
+          (() => { const path = process.getBuiltinModule('node:path'); const home = process.getBuiltinModule('node:os').homedir(); const configured = process.env.DSH_HOME; const selected = configured !== undefined && configured.trim().length > 0 ? configured : path.join(home, '.dsh'); const expanded = selected === '~' ? home : selected.startsWith('~/') || selected.startsWith('~\\') ? path.join(home, selected.slice(2)) : selected; return path.join(path.resolve(expanded), 'storages') })()
 
     - id: storage-domain
       name: '@deepseek-ai/dsh-storage-domain'
diff --git a/apps/cli/package.json b/apps/cli/package.json
index c1f954e419..70a8d482ed 100644
--- a/apps/cli/package.json
+++ b/apps/cli/package.json
@@ -113,11 +113,14 @@
     "@deepseek-ai/dsh-tool-subagent": "workspace:^",
     "@deepseek-ai/dsh-tool-tasks": "workspace:^",
     "@deepseek-ai/dsh-tool-todo": "workspace:^",
+    "@deepseek-ai/dsh-tool-web": "workspace:^",
     "@deepseek-ai/dsh-tool-workflow": "workspace:^",
     "@deepseek-ai/dsh-tools": "workspace:^",
     "@deepseek-ai/dsh-tui": "workspace:^",
     "@deepseek-ai/dsh-user-approval": "workspace:^",
     "@deepseek-ai/dsh-user-interaction": "workspace:^",
+    "@deepseek-ai/dsh-web": "workspace:^",
+    "@deepseek-ai/dsh-web-search-deepseek": "workspace:^",
     "@deepseek-ai/dsh-workflow-workerthread": "workspace:^",
     "@deepseek-ai/dsh-workspace": "workspace:^",
     "@deepseek-ai/dsh-workspace-context": "workspace:^",
diff --git a/apps/cli/src/args.ts b/apps/cli/src/args.ts
index a1f0fff4c4..ac74b9468d 100644
--- a/apps/cli/src/args.ts
+++ b/apps/cli/src/args.ts
@@ -23,6 +23,22 @@ interface TuiInvocation {
   resume?: string
 }
 
+/**
+ * Print the composed config tree and exit, without booting: `--dump-config`
+ * composes the shipped base, the surface overlay, and the `--config` or
+ * personal overlay — exactly the layers that surface would boot;
+ * `--dump-default-config` stops at the surface overlay (the shipped tree, no
+ * user layer).
+ */
+interface DumpConfigInvocation {
+  mode: 'dump-config'
+  surface: 'tui' | 'web'
+  /** Omit the `--config`/personal layer and print only the shipped composition. */
+  defaultOnly: boolean
+  /** The `--config` overlay to compose instead of the personal one. */
+  config?: string
+}
+
 /** Headless one-shot: `dsh -p "task"`. */
 interface HeadlessInvocation {
   mode: 'headless'
@@ -69,6 +85,7 @@ interface WebInvocation {
 /** The resolved `dsh` invocation: exactly one mode. `--help`/`--version`/errors exit inside {@link parseDshArgs}. */
 export type DshInvocation =
   | TuiInvocation
+  | DumpConfigInvocation
   | HeadlessInvocation
   | MetaInvocation
   | SkillSessionInvocation
@@ -82,6 +99,34 @@ interface WebOptions {
   dev?: boolean
   workspaceRoot?: string
   trustedHost?: string[]
+  dumpConfig?: boolean
+  dumpDefaultConfig?: boolean
+}
+
+/**
+ * Resolve the two dump flags for one surface, or return `undefined` when
+ * neither was passed. Both flags together are contradictory (one includes the
+ * user layer, the other excludes it) and fail loud through `error`.
+ */
+function resolveDump(
+  surface: 'tui' | 'web',
+  options: { config?: string; dumpConfig?: boolean; dumpDefaultConfig?: boolean },
+  error: (message: string) => never,
+): DumpConfigInvocation | undefined {
+  if (options.dumpConfig !== true && options.dumpDefaultConfig !== true) return undefined
+  if (options.dumpConfig === true && options.dumpDefaultConfig === true) {
+    error('error: --dump-config and --dump-default-config are mutually exclusive')
+  }
+  const defaultOnly = options.dumpDefaultConfig === true
+  if (defaultOnly && options.config !== undefined) {
+    error('error: --dump-default-config prints the shipped tree and takes no --config')
+  }
+  return {
+    mode: 'dump-config',
+    surface,
+    defaultOnly,
+    ...options.config !== undefined && { config: options.config },
+  }
 }
 
 /**
@@ -135,7 +180,26 @@ Examples:
     .option('--resume ', 'continue a past session by id')
     .option('--config ', 'apply this overlay of loader patches instead of the personal one')
     .option('--config-replace ', 'boot this file as the entire tree, ignoring the shipped and personal configuration')
-    .action((options: { config?: string; configReplace?: string; prompt?: string; resume?: string }) => {
+    .option('--dump-config', 'print the composed config tree (base + surface + --config/personal overlay) and exit')
+    .option('--dump-default-config', 'print the shipped config tree (base + surface overlay, no user layer) and exit')
+    .action((options: {
+      config?: string
+      configReplace?: string
+      prompt?: string
+      resume?: string
+      dumpConfig?: boolean
+      dumpDefaultConfig?: boolean
+    }) => {
+      const dump = resolveDump('tui', options, message => program.error(message))
+      if (dump !== undefined) {
+        // The dump prints composition; a boot-only flag alongside it would be
+        // silently ignored, so reject the mix loud.
+        if (options.prompt !== undefined || options.resume !== undefined || options.configReplace !== undefined) {
+          program.error('error: --dump-config/--dump-default-config take none of -p/--prompt, --resume, or --config-replace')
+        }
+        resolved = dump
+        return
+      }
       if (options.prompt !== undefined) {
         // A headless prompt owns the invocation; an empty task has nothing to
         // run, and --config/--resume are TUI inputs that must not silently
@@ -168,10 +232,18 @@ Examples:
   // a leaked config/prompt/resume option is a mistyped invocation that must fail
   // loud rather than silently run and drop the input.
   const rejectParentOptions = (command: string): void => {
-    const parent = program.opts<{ config?: string; configReplace?: string; prompt?: string; resume?: string }>()
+    const parent = program.opts<{
+      config?: string
+      configReplace?: string
+      prompt?: string
+      resume?: string
+      dumpConfig?: boolean
+      dumpDefaultConfig?: boolean
+    }>()
     if (parent.config !== undefined || parent.configReplace !== undefined
-      || parent.prompt !== undefined || parent.resume !== undefined) {
-      program.error(`error: ${command} takes none of --config, --config-replace, -p/--prompt, or --resume`)
+      || parent.prompt !== undefined || parent.resume !== undefined
+      || parent.dumpConfig !== undefined || parent.dumpDefaultConfig !== undefined) {
+      program.error(`error: ${command} takes none of --config, --config-replace, -p/--prompt, --resume, --dump-config, or --dump-default-config`)
     }
   }
 
@@ -198,8 +270,15 @@ Examples:
     .option('--dev', 'developer mode: hot-reload the browser client')
     .option('--workspace-root ', 'parent directory for workspaces created from the browser UI')
     .option('--trusted-host ', 'extra authority the /api browser-trust fence accepts (host or host:port; repeatable)')
+    .option('--dump-config', 'print the composed config tree (base + web + --config/personal overlay) and exit')
+    .option('--dump-default-config', 'print the shipped config tree (base + web overlay, no user layer) and exit')
     .action((options: WebOptions) => {
       rejectParentOptions('web')
+      const dump = resolveDump('web', options, message => program.error(message))
+      if (dump !== undefined) {
+        resolved = dump
+        return
+      }
       resolved = resolveWeb(options)
     })
 
diff --git a/apps/cli/src/bin.ts b/apps/cli/src/bin.ts
index 6f7ae77c76..aeaaf42692 100644
--- a/apps/cli/src/bin.ts
+++ b/apps/cli/src/bin.ts
@@ -43,6 +43,11 @@ switch (invocation.mode) {
     await runTui(invocation.config, invocation.resume, undefined, undefined, invocation.configReplace)
     break
   }
+  case 'dump-config': {
+    const { runDumpConfig } = await import('./dump-config.ts')
+    runDumpConfig(invocation.surface, invocation.defaultOnly, invocation.config)
+    break
+  }
   case 'meta': {
     const { runMeta } = await import('./tui.ts')
     await runMeta()
diff --git a/apps/cli/src/dump-config.ts b/apps/cli/src/dump-config.ts
new file mode 100644
index 0000000000..39a87c2dc8
--- /dev/null
+++ b/apps/cli/src/dump-config.ts
@@ -0,0 +1,61 @@
+/**
+ * `dsh --dump-config` / `dsh web --dump-config` — print the composed config
+ * tree without booting: the shipped base, the surface overlay, and (unless
+ * `--dump-default-config`) the `--config` or personal overlay, composed
+ * through the include's own patch algorithm so the printed tree is exactly
+ * what that surface would mount. `!!js` expressions print verbatim,
+ * unevaluated — the dump shows composition, not one process's environment.
+ * Launcher-provided boot-context values (session identity, CLI-flag patches)
+ * are per-invocation facts outside the config tree and do not appear.
+ * @module @deepseek-ai/dsh/dump-config
+ */
+
+import { basename, join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import {
+  loadOverlayPatches,
+  loadPersonalPatches,
+  PERSONAL_CONFIG_FILENAME,
+  renderConfigDump,
+  type ConfigDumpLayer,
+} from '@deepseek-ai/dsh-app-boot'
+import { resolveDshHome } from '@deepseek-ai/dsh-paths'
+
+const NAME = 'dsh'
+
+const BASE_CONFIG = fileURLToPath(new URL('../config/base.cordis.yml', import.meta.url))
+const SURFACE_OVERLAYS = {
+  tui: fileURLToPath(new URL('../config/tui.cordis.yml', import.meta.url)),
+  web: fileURLToPath(new URL('../config/web.cordis.yml', import.meta.url)),
+} as const
+
+/* v8 ignore start -- composition over the unit-tested renderConfigDump; the
+   built-bin e2e drives this path end to end */
+/**
+ * Print one surface's composed config tree to stdout, with a comment
+ * separator naming the file each section of rows comes from (and the layers
+ * that patched it).
+ * @param surface - which surface overlay to compose over the shared base.
+ * @param defaultOnly - stop at the surface overlay (no `--config`/personal layer).
+ * @param config - the `--config` overlay path composed instead of the personal
+ * one, or `undefined` to use `$DSH_HOME/config.yaml`.
+ */
+export function runDumpConfig(surface: 'tui' | 'web', defaultOnly: boolean, config?: string): void {
+  const overlay = SURFACE_OVERLAYS[surface]
+  const layers: ConfigDumpLayer[] = [
+    { label: basename(overlay), patches: loadOverlayPatches(NAME, overlay) },
+  ]
+  if (!defaultOnly) {
+    if (config === undefined) {
+      const personal = loadPersonalPatches(NAME)
+      // The personal file may be absent; the shipped layers still print.
+      if (personal !== undefined) {
+        layers.push({ label: join(resolveDshHome(), PERSONAL_CONFIG_FILENAME), patches: personal })
+      }
+    } else {
+      layers.push({ label: config, patches: loadOverlayPatches(NAME, config) })
+    }
+  }
+  process.stdout.write(renderConfigDump(NAME, BASE_CONFIG, layers))
+}
+/* v8 ignore stop */
diff --git a/apps/cli/tests/args.spec.ts b/apps/cli/tests/args.spec.ts
index 396a0e6ca5..cda7818e63 100644
--- a/apps/cli/tests/args.spec.ts
+++ b/apps/cli/tests/args.spec.ts
@@ -45,6 +45,29 @@ describe('parseDshArgs', () => {
       .toEqual({ mode: 'web', dev: false, trustedHosts: ['harness.internal:3080', 'lab.internal', '10.0.0.9'] })
   })
 
+  it('routes the dump flags per surface: composed with the user layer, or shipped only', () => {
+    expect(parse(['--dump-config'])).toEqual({ mode: 'dump-config', surface: 'tui', defaultOnly: false })
+    expect(parse(['--dump-config', '--config', 'c.yml']))
+      .toEqual({ mode: 'dump-config', surface: 'tui', defaultOnly: false, config: 'c.yml' })
+    expect(parse(['--dump-default-config'])).toEqual({ mode: 'dump-config', surface: 'tui', defaultOnly: true })
+    expect(parse(['web', '--dump-config'])).toEqual({ mode: 'dump-config', surface: 'web', defaultOnly: false })
+    expect(parse(['web', '--dump-config', '--config', 'w.yml']))
+      .toEqual({ mode: 'dump-config', surface: 'web', defaultOnly: false, config: 'w.yml' })
+    expect(parse(['web', '--dump-default-config'])).toEqual({ mode: 'dump-config', surface: 'web', defaultOnly: true })
+    // The two dump flags contradict each other; boot-only flags alongside a
+    // dump would be silently ignored; the shipped tree takes no user overlay.
+    expect(exitCode(['--dump-config', '--dump-default-config'])).toBe(1)
+    expect(exitCode(['--dump-default-config', '--config', 'c.yml'])).toBe(1)
+    expect(exitCode(['--dump-config', '--resume', 's'])).toBe(1)
+    expect(exitCode(['--dump-config', '-p', 'task'])).toBe(1)
+    expect(exitCode(['--dump-config', '--config-replace', 'tree.yml'])).toBe(1)
+    expect(exitCode(['web', '--dump-config', '--dump-default-config'])).toBe(1)
+    expect(exitCode(['web', '--dump-default-config', '--config', 'w.yml'])).toBe(1)
+    // A leaked dump flag on a subcommand that has none is a mistyped invocation.
+    expect(exitCode(['meta', '--dump-config'])).toBe(1)
+    expect(exitCode(['upgrade', '--dump-config'])).toBe(1)
+  })
+
   it('exits nonzero instead of silently starting fresh or dropping inputs', () => {
     // Empty resume/prompt would be swallowed downstream; --prompt mixed with
     // TUI inputs must not lose them. (Bad host/port are gated by the webserver
diff --git a/apps/cli/tests/built-bin.e2e.ts b/apps/cli/tests/built-bin.e2e.ts
index d5bcbfd378..c9e1b29969 100644
--- a/apps/cli/tests/built-bin.e2e.ts
+++ b/apps/cli/tests/built-bin.e2e.ts
@@ -1,8 +1,9 @@
-import { existsSync } from 'node:fs'
+import { existsSync, mkdtempSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 import { fileURLToPath } from 'node:url'
 import { execa } from 'execa'
-import { describe, expect, it } from 'vitest'
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
 
 /**
  * Published-entry smoke for the `dsh` bin: run the built `lib/bin.js` under
@@ -22,13 +23,20 @@ import { describe, expect, it } from 'vitest'
 const repoRoot = fileURLToPath(new URL('../../../', import.meta.url))
 const dshBin = join(repoRoot, 'apps/cli/lib/bin.js')
 
-/** Run the built bin with PIPED stdio (stdin closed at EOF); resolve with output + exit code. */
-async function runBuiltBin(): Promise<{ stdout: string; code: number; stderr: string }> {
-  const result = await execa(process.execPath, [dshBin], {
+/**
+ * Run the built bin with PIPED stdio (stdin closed at EOF); resolve with output
+ * + exit code. `env` isolates the Harness home for surfaces that read it.
+ */
+async function runBuiltBin(
+  args: readonly string[] = [],
+  env: Record = {},
+): Promise<{ stdout: string; code: number; stderr: string }> {
+  const result = await execa(process.execPath, [dshBin, ...args], {
     input: '',
     timeout: 25_000,
     killSignal: 'SIGKILL',
     reject: false,
+    env,
   })
   if (result.timedOut) {
     throw new Error(`dsh built bin did not exit within 25s. stdout:\n${result.stdout}\nstderr:\n${result.stderr}`)
@@ -45,4 +53,61 @@ describe.skipIf(!existsSync(dshBin))('dsh BUILT bin (node lib/bin.js, no tsx)',
     // The refusal happens before any plugin mounts: stdout stays silent.
     expect(stdout).toBe('')
   }, 30_000)
+
+  describe('dsh --dump-config', () => {
+    let home: string
+    beforeEach(() => { home = mkdtempSync(join(tmpdir(), 'dsh-dump-bin-')) })
+    afterEach(() => { rmSync(home, { recursive: true, force: true }) })
+
+    it('prints the shipped TUI composition without booting or needing a TTY', async () => {
+      const { stdout, code, stderr } = await runBuiltBin(['--dump-default-config'], { DSH_HOME: home })
+      expect(code).toBe(0)
+      expect(stderr).toBe('')
+      // Base rows composed with the TUI overlay's surface values, `!!js`
+      // expressions verbatim (unevaluated), and TUI-only inserted rows present.
+      expect(stdout).toContain("name: '@deepseek-ai/dsh-agent-loop'")
+      expect(stdout).toContain('model: deepseek-v4-pro')
+      expect(stdout).toContain('cwd: !!js process.cwd()')
+      expect(stdout).toContain("name: '@deepseek-ai/dsh-tui'")
+      // Provenance comment separators name each section's source file.
+      expect(stdout).toContain('# == base.cordis.yml')
+      expect(stdout).toContain('# == base.cordis.yml, patched by tui.cordis.yml')
+      expect(stdout).toContain('# == tui.cordis.yml')
+    }, 30_000)
+
+    it('layers the personal overlay in --dump-config and reports an unmatched patch on stderr', async () => {
+      writeFileSync(join(home, 'config.yaml'), [
+        '- id: agent-loop',
+        '  config:',
+        '    agents:',
+        '      - id: main',
+        '        provider: custom-provider',
+        '        model: custom-model',
+        '- id: only-on-web',
+        '  config:',
+        '    value: 1',
+        '',
+      ].join('\n'))
+      const { stdout, code, stderr } = await runBuiltBin(['--dump-config'], { DSH_HOME: home })
+      expect(code).toBe(0)
+      expect(stdout).toContain('provider: custom-provider')
+      expect(stdout).not.toContain('model: deepseek-v4-pro')
+      // The personal layer appears in the patched row's provenance and the
+      // skipped-patch warning carries its label.
+      expect(stdout).toContain(`patched by tui.cordis.yml, ${join(home, 'config.yaml')}`)
+      expect(stderr).toContain('patch: entry "only-on-web" not found')
+
+      // The shipped view ignores the personal overlay entirely.
+      const shipped = await runBuiltBin(['--dump-default-config'], { DSH_HOME: home })
+      expect(shipped.stdout).not.toContain('custom-provider')
+      expect(shipped.stdout).toContain('model: deepseek-v4-pro')
+    }, 30_000)
+
+    it('composes the web overlay for `dsh web --dump-config`', async () => {
+      const { stdout, code } = await runBuiltBin(['web', '--dump-config'], { DSH_HOME: home })
+      expect(code).toBe(0)
+      expect(stdout).toContain("name: '@deepseek-ai/dsh-host-webserver'")
+      expect(stdout).not.toContain("name: '@deepseek-ai/dsh-tui'")
+    }, 30_000)
+  })
 })
diff --git a/apps/web/tests/access-confirmation.e2e.ts b/apps/web/tests/access-confirmation.e2e.ts
index 89b383da85..d4669bc142 100644
--- a/apps/web/tests/access-confirmation.e2e.ts
+++ b/apps/web/tests/access-confirmation.e2e.ts
@@ -11,7 +11,7 @@ import {
   assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
   launchWebScaffold, watchConsole, webSnapshotMode, type WebScaffold,
 } from './scaffold.ts'
-import { saveFailureShot } from './support.ts'
+import { ZH_BROWSER_LOCALE, saveFailureShot } from './support.ts'
 
 /**
  * connectFreshWorkspace twin over the product default Chinese locale (the
@@ -49,7 +49,7 @@ describe('web e2e: Full access confirmation', () => {
     browser = await chromium.launch(executablePath === undefined ? {} : { executablePath })
     // Keep the product default Chinese locale: the golden pins the actual
     // registered dictionary rather than a test-local translation callback.
-    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: ZH_BROWSER_LOCALE })
     tripwire = watchConsole(page)
     await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
     await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
diff --git a/apps/web/tests/message-actions.e2e.ts b/apps/web/tests/message-actions.e2e.ts
index 4d798e11ed..bb58ccefc4 100644
--- a/apps/web/tests/message-actions.e2e.ts
+++ b/apps/web/tests/message-actions.e2e.ts
@@ -64,14 +64,14 @@ describe('web e2e: message IconActions and clocks on settled history', () => {
     await expect.poll(() => page.getByText('DONE', { exact: true }).count(), { timeout: 15_000 }).toBe(1)
 
     // Focus-reveal the footers (hover:hover keeps them opacity-hidden until
-    // hover/focus-within). User has three actions; each turn's last content
-    // assistant has copy + branch.
+    // hover/focus-within). User and each turn's last content assistant both
+    // have copy + branch.
     const copyButtons = page.getByRole('button', { name: 'Copy' })
     await expect.poll(() => copyButtons.count(), { timeout: 10_000 }).toBeGreaterThanOrEqual(2)
     await copyButtons.first().focus()
     await expect.poll(() => page.getByRole('button', { name: 'Branch into a new conversation' }).count(), { timeout: 5_000 })
       .toBeGreaterThanOrEqual(2)
-    await expect.poll(() => page.getByRole('button', { name: 'Edit' }).count(), { timeout: 5_000 }).toBe(1)
+    await expect.poll(() => page.getByRole('button', { name: 'Edit' }).count(), { timeout: 5_000 }).toBe(0)
   }, 60_000)
 
   it.skipIf(MODE === 'record')('matches the conversation aria golden with IconActions and clocks', async () => {
diff --git a/apps/web/tests/models-settings.e2e.ts b/apps/web/tests/models-settings.e2e.ts
index 9c2215ed7f..c46127c9db 100644
--- a/apps/web/tests/models-settings.e2e.ts
+++ b/apps/web/tests/models-settings.e2e.ts
@@ -20,7 +20,7 @@ import {
   assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
   launchWebScaffold, watchConsole, webSnapshotMode, type WebScaffold,
 } from './scaffold.ts'
-import { saveFailureShot } from './support.ts'
+import { ZH_BROWSER_LOCALE, saveFailureShot } from './support.ts'
 
 const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/models-settings', import.meta.url))
 const EMPTY_EXPECTED = join(SNAPSHOT_DIR, 'empty.expected.md')
@@ -37,7 +37,8 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
   beforeAll(async () => {
     scaffold = await launchWebScaffold({})
     browser = await chromium.launch()
-    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    // The scenario asserts the shipped Chinese copy, so the browser asks for it.
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: ZH_BROWSER_LOCALE })
     tripwire = watchConsole(page)
     await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
     await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
diff --git a/apps/web/tests/onboarding-deepseek-config.e2e.ts b/apps/web/tests/onboarding-deepseek-config.e2e.ts
index 5eb5b18aa7..1ec36454d0 100644
--- a/apps/web/tests/onboarding-deepseek-config.e2e.ts
+++ b/apps/web/tests/onboarding-deepseek-config.e2e.ts
@@ -12,7 +12,7 @@ import {
   acknowledgeReloadConnectionLoss, assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
   launchWebScaffold, watchConsole, webSnapshotMode, type WebScaffold,
 } from './scaffold.ts'
-import { saveFailureShot } from './support.ts'
+import { ZH_BROWSER_LOCALE, saveFailureShot } from './support.ts'
 import { settingsNamespace } from '@deepseek-ai/dsh-settings'
 import {
   WELCOME_NOTICE_ACK_FIELD, WELCOME_NOTICE_COPY, WELCOME_NOTICE_SETTINGS_NAMESPACE,
@@ -34,7 +34,8 @@ describe.skipIf(MODE === 'record')('web e2e: first-run DeepSeek credential setup
   beforeAll(async () => {
     scaffold = await launchWebScaffold({ deepSeekMissingCredential: true, welcomeNoticePending: true })
     browser = await chromium.launch()
-    page = await browser.newPage({ viewport: { width: 1440, height: 960 } })
+    // The scenario asserts the shipped Chinese copy, so the browser asks for it.
+    page = await browser.newPage({ viewport: { width: 1440, height: 960 }, locale: ZH_BROWSER_LOCALE })
     tripwire = watchConsole(page)
     page.on('console', message => browserConsole.push(message.text()))
     await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
diff --git a/apps/web/tests/permission-policy-context.e2e.ts b/apps/web/tests/permission-policy-context.e2e.ts
new file mode 100644
index 0000000000..3dec5d1784
--- /dev/null
+++ b/apps/web/tests/permission-policy-context.e2e.ts
@@ -0,0 +1,171 @@
+// Web acceptance for current sandbox-policy context. A real Chromium drives
+// the shipped /permission command through all three presets; record mode uses
+// the real provider, while replay keeps the same provider-authored behavior
+// keyless. Assertions read the exact durable header, runtime-context messages,
+// and tool calls, so assistant prose alone cannot satisfy the scenario.
+import { readFile } from 'node:fs/promises'
+import { join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { canonicalPath } from '@deepseek-ai/dsh-sandbox'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, fixtureUserPrompts, launchWebScaffold, recordFixture,
+  watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { connectFreshWorkspace, newEnglishPage, saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/permission-policy-context', import.meta.url))
+const FIXTURE = fileURLToPath(new URL('./snapshots/permission-policy-context/session.jsonl', import.meta.url))
+const MODE = webSnapshotMode()
+
+const PROMPTS = [
+  'Can you create or edit a normal file right now under the current policy? Answer directly in one sentence. Do not call a tool just to discover the policy.',
+  'Does the DSH file sandbox currently restrict file operations? Answer directly in one sentence. Do not call tools.',
+  'Reply with exactly WORKSPACE_POLICY_SEEN. Do not call tools.',
+  'Create the relative path policy-neutral.txt in the current workspace containing exactly POLICY_NEUTRAL_OK, verify its contents, then report completion.',
+] as const
+
+const PRESET_LABELS = ['Read Only', 'Full access', 'Workspace Write'] as const
+
+function requestSystems(events: readonly SessionEvent[]): string[] {
+  return events.flatMap((event) => {
+    if (event.type !== 'request/header') return []
+    return typeof event.data.header.system === 'string' ? [event.data.header.system] : []
+  })
+}
+
+function runtimeContexts(events: readonly SessionEvent[]): string[] {
+  return events.flatMap((event) => {
+    if (event.type !== 'user/message'
+      || event.data.source.kind !== 'plugin'
+      || event.data.source.plugin !== '@deepseek-ai/dsh-system-prompt') return []
+    return event.data.content.flatMap(block => block.type === 'text' ? [block.text] : [])
+  })
+}
+
+function assistantTexts(events: readonly SessionEvent[]): string[] {
+  return events.flatMap((event) => {
+    if (event.type !== 'assistant/message') return []
+    const text = event.data.message.content.flatMap(block => block.type === 'text' ? [block.text] : []).join('').replaceAll('**', '')
+    return text.length === 0 ? [] : [text]
+  })
+}
+
+function callArgs(event: Extract): Record {
+  return JSON.parse(event.data.arguments) as Record
+}
+
+describe('web e2e: current sandbox policy reaches the model before tools', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let tripwire: ReturnType
+  let disposeApproval: (() => void) | undefined
+  let sessionWorkspace: string | undefined
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold(MODE === 'record' ? {} : { replayFixture: FIXTURE })
+    disposeApproval = scaffold.ctx.on('approval/request', () => Promise.resolve('allowed-once'), { prepend: true })
+    scaffold.ctx.on('session/event', (session, event: SessionEvent) => {
+      sessionWorkspace = session.header.cwd
+      sessionEvents.push(event)
+    })
+    browser = await chromium.launch()
+    page = await newEnglishPage(browser)
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    await connectFreshWorkspace(page)
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    disposeApproval?.()
+    await scaffold?.close()
+  })
+
+  it('switches read-only, danger-full-access, and workspace-write through the real GUI command path', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-permission-policy-context'))
+    if (MODE !== 'record') {
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual(PROMPTS)
+    }
+
+    const input = page.locator('textarea').first()
+    let sessionId: Awaited> | undefined
+    for (const [index, preset] of ['read-only', 'danger-full-access', 'workspace-write'].entries()) {
+      await input.fill(`/permission ${preset}`)
+      await input.press('Enter')
+      await page.getByRole('button', { name: `Access mode, current: ${PRESET_LABELS[index]}` })
+        .waitFor({ timeout: 10_000 })
+
+      const settled = scaffold.whenTurnSettled()
+      await input.fill(PROMPTS[index] as string)
+      await input.press('Enter')
+      sessionId = await settled
+      await expect.poll(() => input.isEnabled(), { timeout: 10_000 }).toBe(true)
+    }
+
+    await input.fill('/permission read-only')
+    await input.press('Enter')
+    await page.getByRole('button', { name: 'Access mode, current: Read Only' }).waitFor({ timeout: 10_000 })
+    const settled = scaffold.whenTurnSettled()
+    await input.fill(PROMPTS[3])
+    await input.press('Enter')
+    sessionId = await settled
+
+    if (sessionId === undefined) throw new Error('permission-policy scenario completed no model turn')
+    if (MODE === 'record') await recordFixture(scaffold, sessionId, FIXTURE)
+  }, 240_000)
+
+  it.skipIf(MODE === 'record')('records cache-safe current policy before the corresponding model behavior', async () => {
+    const systems = requestSystems(sessionEvents)
+    expect(systems).toHaveLength(1)
+    expect(systems[0]).not.toContain('Current DSH file policy:')
+    expect(systems[0]).not.toContain('Approval policy:')
+    expect(systems[0]).not.toContain('Approval prompts are disabled in this session')
+
+    const contexts = runtimeContexts(sessionEvents)
+    expect(contexts).toHaveLength(4)
+    expect(contexts[0]).toContain('Current DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode.')
+    expect(contexts[0]).toContain('Do not refuse a required modification from this policy alone')
+    expect(contexts[0]).toContain('Approval policy: ask.')
+    expect(contexts[1]).toContain('Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.')
+    expect(contexts[1]).toContain('Approval prompts are disabled in this session')
+
+    if (sessionWorkspace === undefined) throw new Error('permission-policy scenario observed no session workspace')
+    expect(contexts[2]).toContain(`Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: ${JSON.stringify(canonicalPath(sessionWorkspace))}. Some platform temporary areas may also be writable.`)
+    expect(contexts[2]).toContain('Approval policy: ask.')
+    expect(contexts[2]).not.toContain('Approval prompts are disabled in this session')
+    expect(contexts[3]).toContain('Current DSH file policy: read-only.')
+
+    const answers = assistantTexts(sessionEvents)
+    expect(answers.length).toBeGreaterThanOrEqual(4)
+    expect(answers[0]).toMatch(/read-only.*(?:denied|cannot modify|cannot create or edit)/i)
+    expect(answers[1]).toMatch(/does not restrict.*(?:file operations|(?:write\/edit tools|write and edit tools).*one-shot bash commands)/i)
+    expect(answers[2]).toBe('WORKSPACE_POLICY_SEEN')
+    const calls = sessionEvents.filter(
+      (event): event is Extract => event.type === 'tool/call',
+    )
+    expect(calls.every(call => call.data.turn === 4)).toBe(true)
+    expect(calls.length).toBeGreaterThanOrEqual(2)
+    const firstCall = calls[0]
+    if (firstCall === undefined) throw new Error('neutral policy task produced no tool call')
+    expect(callArgs(firstCall)['sandbox_permissions']).toBeUndefined()
+    expect(calls.some(call => callArgs(call)['sandbox_permissions'] !== undefined)).toBe(true)
+    expect(sessionEvents.some(event => event.type === 'tool/result'
+      && JSON.stringify(event.data).includes('[sandbox: file access denied under read-only mode]'))).toBe(true)
+    expect(sessionEvents.some(event => event.type === 'approval/asked')).toBe(true)
+    if (sessionWorkspace === undefined) throw new Error('permission-policy scenario observed no session workspace')
+    expect(await readFile(join(sessionWorkspace, 'policy-neutral.txt'), 'utf8')).toBe('POLICY_NEUTRAL_OK')
+  })
+
+  it.skipIf(MODE === 'record')('stays clean and keeps the fixture inventory closed', async () => {
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['session.jsonl'])
+  })
+})
diff --git a/apps/web/tests/queue-actions.e2e.ts b/apps/web/tests/queue-actions.e2e.ts
index e083ed8c06..069ef398d9 100644
--- a/apps/web/tests/queue-actions.e2e.ts
+++ b/apps/web/tests/queue-actions.e2e.ts
@@ -131,9 +131,7 @@ describe('web e2e: queue row actions', () => {
 
     const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
     await compareOrRefreshGolden(UI_EXPECTED, snapshot, MODE)
-    expect(sessionEvents.filter(event =>
-      event.type === 'user/message' && event.data.source.kind === 'user',
-    )).toHaveLength(1)
+    expect(sessionEvents.filter(event => event.type === 'user/message' && event.data.source.kind === 'user')).toHaveLength(1)
     expect(tripwire.pageErrors).toEqual([])
     expect(tripwire.warnings).toEqual([])
 
diff --git a/apps/web/tests/scaffold.ts b/apps/web/tests/scaffold.ts
index 329d8dc8a2..49a6b0709e 100644
--- a/apps/web/tests/scaffold.ts
+++ b/apps/web/tests/scaffold.ts
@@ -140,6 +140,17 @@ export interface LaunchOptions {
    * keyless first-run configuration lane; the default disables the adapter.
    */
   deepSeekMissingCredential?: boolean
+  /**
+   * Patch the shipped DeepSeek search row to a deterministic endpoint and
+   * credential reference. Browser search scenarios keep the real provider and
+   * credentials seam while avoiding external search traffic and ambient keys.
+   */
+  deepSeekSearch?: {
+    /** Anthropic-compatible base URL; the provider appends `/messages`. */
+    baseURL: string
+    /** Credential reference resolved by the shipped search provider. */
+    apiKeyEnv: string
+  }
   /** Leave the current welcome notice unacknowledged; ordinary scenarios publish it as complete before browser boot. */
   welcomeNoticePending?: boolean
 }
@@ -207,9 +218,9 @@ export async function launchWebScaffold(options: LaunchOptions = {}): Promise [
+  plugin.url,
+  readFileSync(join(process.cwd(), 'packages/client', plugin.dir, 'lib/client.js'), 'utf8'),
+]))
+
+interface FixtureWindow extends Window {
+  __DSH_BOOT__?: { rev: string; entries: WebBootEntry[] }
+  __ModuleLoader__?: unknown
+}
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+const win = window as FixtureWindow
+let unmount: (() => void) | undefined
+
+/** Normalize a rendered search card to a stable text shape: the kind, the banner
+ *  summary, each file header (path + count), each visible match line, the expand
+ *  control label, and the recovery footer. CSS-module class names carry a
+ *  per-build hash in one of two schemes — ui-primitives emits `__`
+ *  (name bounded by underscores), ui-conversation emits `_` (name at
+ *  the end). `hasClass` matches a module class by its logical name under either,
+ *  without matching a longer name that contains it (`line` must not hit
+ *  `lineNumber`). */
+function hasClass(el: Element, name: string): boolean {
+  return [...el.classList].some(cls => cls === name || cls.endsWith(`_${name}`) || cls.startsWith(`_${name}_`) || cls.includes(`_${name}_`))
+}
+
+function cardShape(root: Element): string {
+  const card = root.querySelector('[data-search]')
+  if (card === null) return ''
+  const pick = (from: Element, name: string): Element[] =>
+    [...from.querySelectorAll('*')].filter(el => hasClass(el, name))
+  const lines: string[] = [`kind=${card.getAttribute('data-search')}`]
+  const summary = pick(card, 'summary')[0]?.textContent?.trim()
+  if (summary !== undefined && summary !== '') lines.push(`summary=${summary}`)
+  for (const header of pick(card, 'fileHeader')) lines.push(`file=${header.textContent?.trim() ?? ''}`)
+  for (const row of pick(card, 'line')) lines.push(`line=${row.textContent?.trim() ?? ''}`)
+  const expand = pick(card, 'expand')[0]?.textContent?.trim()
+  if (expand !== undefined && expand !== '') lines.push(`expand=${expand}`)
+  const recovery = pick(root, 'searchRecovery')[0]?.textContent?.trim()
+  if (recovery !== undefined && recovery !== '') lines.push(`recovery=${recovery}`)
+  return lines.join('\n')
+}
+
+beforeEach(() => {
+  localStorage.clear()
+  // English pinned before boot so the sidebar's role/text locators stay
+  // deterministic (the built-boot smoke's convention).
+  localStorage.setItem('dsh.locale', 'en')
+  document.title = 'DeepSeek Harness'
+  vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+  vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+    setTimeout(() => { callback(0) }, 0) as unknown as number)
+  vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+})
+
+afterEach(() => {
+  act(() => { unmount?.() })
+  unmount = undefined
+  cleanup()
+  delete win.__DSH_BOOT__
+  delete win.__ModuleLoader__
+  document.body.innerHTML = ''
+  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+  document.title = ''
+  history.replaceState(null, '', '/')
+  vi.unstubAllGlobals()
+})
+
+describe('assembled search card', () => {
+  it('renders the grep card, its truncation summary, and its capped head/tail slice from the built bundles', async () => {
+    history.replaceState(null, '', '/?fixture')
+    const root = document.createElement('div')
+    root.id = 'root'
+    document.body.appendChild(root)
+    win.__DSH_BOOT__ = { rev: 'fx', entries: PLUGINS.map(({ dir: _dir, ...plugin }) => plugin) }
+    act(() => {
+      const entry = new AppWebEntry(root, {
+        fetchBundle: (url) => {
+          const code = bundles.get(url)
+          return code === undefined ? Promise.reject(new Error(`missing built bundle ${url}`)) : Promise.resolve(code)
+        },
+        executeBundle: (code) => { (0, eval)(code) },
+      })
+      void entry.run()
+      unmount = () => { entry.dispose() }
+    })
+
+    const tree = await screen.findByRole('tree', { name: 'Sessions' }, { timeout: 10_000 })
+    fireEvent.click(await within(tree).findByText('Fixture 历史会话'))
+    // Wait for chat content to reach the fixture's later turns (the bash sample
+    // is turn 65, the grep card turn 66).
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash-global"]')).not.toBeNull()
+    }, { timeout: 10_000 })
+    // The grep turn's keyed SearchRow renders the card resident: wait for it.
+    await waitFor(() => {
+      const tools = [...document.querySelectorAll('[data-tool]')].map(el => el.getAttribute('data-tool'))
+      expect(tools, `tools present: ${tools.join(', ')}`).toContain('grep')
+    }, { timeout: 10_000 })
+
+    // `data-tool` sits on the summary row; the card and recovery footer are its
+    // siblings inside the SearchRow wrapper, so shape the wrapper (its parent).
+    const grepRow = document.querySelector('[data-tool="grep"]')!.parentElement!
+    const shape = cardShape(grepRow)
+    if (refreshing) {
+      mkdirSync(dirname(EXPECTED), { recursive: true })
+      writeFileSync(EXPECTED, shape)
+    }
+    await expect(shape).toMatchFileSnapshot(EXPECTED)
+  })
+})
diff --git a/apps/web/tests/settings-chrome.e2e.ts b/apps/web/tests/settings-chrome.e2e.ts
index a5aced7de2..a1d77657b8 100644
--- a/apps/web/tests/settings-chrome.e2e.ts
+++ b/apps/web/tests/settings-chrome.e2e.ts
@@ -18,7 +18,7 @@ import {
   acknowledgeReloadConnectionLoss, assertFixtureInventory, captureStableAria, compareOrRefreshGolden,
   launchWebScaffold, watchConsole, webSnapshotMode, type WebScaffold,
 } from './scaffold.ts'
-import { saveFailureShot } from './support.ts'
+import { ZH_BROWSER_LOCALE, saveFailureShot } from './support.ts'
 
 const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/settings-chrome', import.meta.url))
 const DIALOG_EXPECTED = join(SNAPSHOT_DIR, 'dialog.expected.md')
@@ -33,7 +33,9 @@ describe('web e2e: settings modal and General preferences', () => {
   beforeAll(async () => {
     scaffold = await launchWebScaffold({})
     browser = await chromium.launch()
-    page = await browser.newPage({ viewport: { width: 1680, height: 1000 } })
+    // Chinese browser: the shared page asserts the localized settings surface
+    // the client derives from it (the English default has its own spec below).
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: ZH_BROWSER_LOCALE })
     tripwire = watchConsole(page)
     await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
     await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
@@ -215,6 +217,30 @@ describe('web e2e: settings modal and General preferences', () => {
     expect(tripwire.pageErrors).toEqual([])
   }, 90_000)
 
+  it('opens an English browser in English without any stored preference', async () => {
+    // A second page under a different browser language: nothing is persisted
+    // for it, so the settings surface must follow the browser rather than the
+    // product fallback the shared zh page shows.
+    const enPage = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: 'en-US' })
+    const enTripwire = watchConsole(enPage)
+    onTestFailed(() => saveFailureShot(enPage, 'web-e2e-settings-browser-language'))
+    try {
+      await enPage.goto(scaffold.baseUrl, { waitUntil: 'load' })
+      await enPage.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+      expect(await enPage.evaluate(() => localStorage.getItem('dsh.locale'))).toBeNull()
+      await enPage.getByRole('button', { name: 'Settings', exact: true }).click()
+      const dialog = enPage.getByRole('dialog', { name: 'Settings' })
+      await dialog.waitFor({ timeout: 10_000 })
+      await dialog.getByRole('button', { name: 'English' }).waitFor({ timeout: 10_000 })
+      // This page has no closing inventory spec to sweep its console, so the
+      // scenario clears both tripwire channels itself.
+      expect(enTripwire.pageErrors).toEqual([])
+      expect(enTripwire.warnings).toEqual([])
+    } finally {
+      await enPage.close()
+    }
+  }, 90_000)
+
   it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
     expect(tripwire.warnings).toEqual([])
     await assertFixtureInventory(SNAPSHOT_DIR, ['dialog.expected.md'])
diff --git a/apps/web/tests/smoke-real.e2e.ts b/apps/web/tests/smoke-real.e2e.ts
index 8bcb8da23a..e19d7cfab1 100644
--- a/apps/web/tests/smoke-real.e2e.ts
+++ b/apps/web/tests/smoke-real.e2e.ts
@@ -163,6 +163,8 @@ describe('dsh web keyless CLI smoke', () => {
         env: {
           ...process.env,
           DEEPSEEK_API_KEY: 'keyless-web-no-call',
+          DSH_HOME: join(sessionsDir, '.dsh'),
+          DSH_AGENTS_HOME: join(sessionsDir, '.agents'),
           TSX_TSCONFIG_PATH: join(REPO_ROOT, 'tsconfig.json'),
         },
         stdio: ['ignore', 'pipe', 'pipe'],
@@ -188,8 +190,12 @@ describe('dsh web keyless CLI smoke', () => {
     mkdirSync(join(workspace, '.git'))
     writeFileSync(join(workspace, 'AGENTS.md'), 'web-workspace-context-probe\n')
 
-    let resolveProviderRequest!: (request: { messages?: { role?: string; content?: string }[] }) => void
-    const providerRequest = new Promise<{ messages?: { role?: string; content?: string }[] }>((resolve) => {
+    interface NativeProviderRequest {
+      messages?: { role?: string; content?: string }[]
+      tools?: { function?: { name?: string } }[]
+    }
+    let resolveProviderRequest!: (request: NativeProviderRequest) => void
+    const providerRequest = new Promise((resolve) => {
       resolveProviderRequest = resolve
     })
     const provider = createServer((request, response) => {
@@ -197,7 +203,7 @@ describe('dsh web keyless CLI smoke', () => {
       request.setEncoding('utf8')
       request.on('data', (chunk: string) => { body += chunk })
       request.on('end', () => {
-        resolveProviderRequest(JSON.parse(body) as { messages?: { role?: string; content?: string }[] })
+        resolveProviderRequest(JSON.parse(body) as NativeProviderRequest)
         response.writeHead(200, { 'content-type': 'text/event-stream' })
         response.end([
           'data: {"choices":[{"delta":{"role":"assistant","content":null,"reasoning_content":""}}]}',
@@ -222,6 +228,7 @@ describe('dsh web keyless CLI smoke', () => {
           DEEPSEEK_API_KEY: 'keyless-web-workspace',
           DEEPSEEK_BASE_URL: `http://127.0.0.1:${address.port}`,
           DSH_HOME: join(workspace, '.dsh'),
+          DSH_AGENTS_HOME: join(workspace, '.agents'),
           TSX_TSCONFIG_PATH: join(REPO_ROOT, 'tsconfig.json'),
         },
         stdio: ['ignore', 'pipe', 'pipe'],
@@ -241,6 +248,8 @@ describe('dsh web keyless CLI smoke', () => {
           setTimeout(() => { reject(new Error('provider request not received in 10s')) }, 10_000).unref()
         }),
       ])
+      expect(captured.messages?.some(message =>
+        message.role === 'user' && message.content?.includes(''))).toBe(false)
       const workspaceMessage = captured.messages?.find(message =>
         message.role === 'user' && message.content?.includes('web-workspace-context-probe'))
       expect(workspaceMessage).toMatchInlineSnapshot(`
@@ -256,6 +265,13 @@ describe('dsh web keyless CLI smoke', () => {
           "role": "user",
         }
       `)
+      expect(captured.tools?.map(tool => tool.function?.name)
+        .filter(name => name === 'web_search' || name === 'web_fetch'))
+        .toMatchInlineSnapshot(`
+          [
+            "web_search",
+          ]
+        `)
     } finally {
       const closed = child.exitCode === null
         ? new Promise((resolveClose) => { child.once('close', () => { resolveClose() }) })
@@ -402,6 +418,7 @@ describe('dsh web keyless CLI smoke', () => {
           DEEPSEEK_BASE_URL: `http://127.0.0.1:${address.port}`,
           DSH_TOOLS_MODE: 'code',
           DSH_HOME: join(workspace, '.dsh'),
+          DSH_AGENTS_HOME: join(workspace, '.agents'),
           TSX_TSCONFIG_PATH: join(REPO_ROOT, 'tsconfig.json'),
         },
         stdio: ['ignore', 'pipe', 'pipe'],
@@ -450,8 +467,8 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY || notReady.length > 0)('web smoke
     sessionsDir = mkdtempSync(join(tmpdir(), 'dsh-web-w5-'))
     const port = await probeFreePort()
     // tsx boot mirrors demo:web — lib/ may be unbuilt in this worktree. Isolate
-    // the global Harness home inside the temp world; tsx also needs the repo's
-    // loader and tsconfig paths pointed at explicitly.
+    // the host-level Harness and shared-agent homes inside the temp world; tsx
+    // also needs the repo's loader and tsconfig paths pointed at explicitly.
     const tsxLoader = pathToFileURL(createRequire(join(REPO_ROOT, 'package.json')).resolve('tsx')).href
     child = spawn(
       process.execPath,
@@ -461,6 +478,7 @@ describe.skipIf(!process.env.DEEPSEEK_API_KEY || notReady.length > 0)('web smoke
         env: {
           ...process.env,
           DSH_HOME: join(sessionsDir, '.dsh'),
+          DSH_AGENTS_HOME: join(sessionsDir, '.agents'),
           TSX_TSCONFIG_PATH: join(REPO_ROOT, 'tsconfig.json'),
         },
         stdio: ['ignore', 'pipe', 'pipe'],
diff --git a/apps/web/tests/snapshots/code-mode-round/ui.expected.md b/apps/web/tests/snapshots/code-mode-round/ui.expected.md
index 5d1979eadf..5095ea278d 100644
--- a/apps/web/tests/snapshots/code-mode-round/ui.expected.md
+++ b/apps/web/tests/snapshots/code-mode-round/ui.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - 'button "Think The user wants me to write a single `run_code` program that:"':
   - img
   - img
@@ -20,10 +22,8 @@
   - img
   - text: Code Run bash echo and catch missing file read
 - img
-- text: Bash Echo CODE_ROUND_OK
-- 'button "Read Error: cannot read \"{{cwd}}/workspace/missing.txt\": not found"':
-  - img
-  - text: "Read Error: cannot read \"{{cwd}}/workspace/missing.txt\": not found"
+- text: Bash Echo CODE_ROUND_OK 失败 Read
+- button "missing.txt"
 - button "Think The program ran successfully. Let me now reply DONE as instructed.":
   - img
   - img
@@ -42,4 +42,4 @@
   - text: DeepSeek-V4-Flash
   - img
 - button "Send message" [disabled]
-- text: 1 turns · 2 steps Tool call {{duration}} Cache hit 52% Input 17.2K tok · Output 252 tok
+- text: 1 turns · 2 steps Tool call {{duration}} Context 7% of 128K Cache hit 52% Input 17.2K tok · Output 252 tok
diff --git a/apps/web/tests/snapshots/cordis-tool-round/ui.expected.md b/apps/web/tests/snapshots/cordis-tool-round/ui.expected.md
index 3ccbdfb332..636b1e6d28 100644
--- a/apps/web/tests/snapshots/cordis-tool-round/ui.expected.md
+++ b/apps/web/tests/snapshots/cordis-tool-round/ui.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - button "Think The user wants me to:":
   - img
   - img
@@ -57,4 +59,4 @@
   - text: DeepSeek-V4-Flash
   - img
 - button "Send message" [disabled]
-- text: 1 turns · 4 steps Tool call {{duration}} Cache hit 77% Input 66.5K tok · Output 312 tok
+- text: 1 turns · 4 steps Tool call {{duration}} Context 13% of 128K Cache hit 77% Input 66.5K tok · Output 312 tok
diff --git a/apps/web/tests/snapshots/fresh-round-trip/ui.expected.md b/apps/web/tests/snapshots/fresh-round-trip/ui.expected.md
index 039ecc99ea..3f7fa52b2e 100644
--- a/apps/web/tests/snapshots/fresh-round-trip/ui.expected.md
+++ b/apps/web/tests/snapshots/fresh-round-trip/ui.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - button "Think The user wants me to run a simple bash command and reply with \"DONE\".":
   - img
   - img
@@ -37,4 +39,4 @@
   - text: DeepSeek-V4-Flash
   - img
 - button "Send message" [disabled]
-- text: 1 turns · 2 steps Tool call {{duration}} Cache hit 99% Input 15.7K tok · Output 111 tok
+- text: 1 turns · 2 steps Tool call {{duration}} Context 6% of 128K Cache hit 99% Input 15.7K tok · Output 111 tok
diff --git a/apps/web/tests/snapshots/lifecycle-chrome/reloaded.expected.md b/apps/web/tests/snapshots/lifecycle-chrome/reloaded.expected.md
index 113f81f9eb..f58e5b77f2 100644
--- a/apps/web/tests/snapshots/lifecycle-chrome/reloaded.expected.md
+++ b/apps/web/tests/snapshots/lifecycle-chrome/reloaded.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - button "Think The user wants me to reply with a single word. Let me comply.":
   - img
   - img
@@ -29,4 +31,4 @@
   - text: DeepSeek-V4-Flash
   - img
 - button "Send message" [disabled]
-- text: 1 turns · 1 steps Cache hit 99% Input 7.8K tok · Output 21 tok
+- text: 1 turns · 1 steps Context 6% of 128K Cache hit 99% Input 7.8K tok · Output 21 tok
diff --git a/apps/web/tests/snapshots/live-interactions/cancel.expected.md b/apps/web/tests/snapshots/live-interactions/cancel.expected.md
index eb3742eb34..3333237798 100644
--- a/apps/web/tests/snapshots/live-interactions/cancel.expected.md
+++ b/apps/web/tests/snapshots/live-interactions/cancel.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - paragraph: partial
 - text: Stopped
 - button "Copy":
diff --git a/apps/web/tests/snapshots/live-interactions/error-auth.expected.md b/apps/web/tests/snapshots/live-interactions/error-auth.expected.md
index 9dcca575de..c65690aa73 100644
--- a/apps/web/tests/snapshots/live-interactions/error-auth.expected.md
+++ b/apps/web/tests/snapshots/live-interactions/error-auth.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - textbox "Message the agent"
 - button "Commands":
   - img
diff --git a/apps/web/tests/snapshots/live-interactions/loading.expected.md b/apps/web/tests/snapshots/live-interactions/loading.expected.md
index ae44167759..b442b4345a 100644
--- a/apps/web/tests/snapshots/live-interactions/loading.expected.md
+++ b/apps/web/tests/snapshots/live-interactions/loading.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - paragraph: partial
 - status: Deep diving...
 - textbox "Message the agent"
diff --git a/apps/web/tests/snapshots/live-interactions/retry.expected.md b/apps/web/tests/snapshots/live-interactions/retry.expected.md
index 4ed6a10c6f..f34dddd7dd 100644
--- a/apps/web/tests/snapshots/live-interactions/retry.expected.md
+++ b/apps/web/tests/snapshots/live-interactions/retry.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - group:
   - status: Retried model request (1/2) · {{duration}}
 - button "Think The user is asking for a one-sentence description of event sourcing. This is a straightforward knowledge question that doesn't require any skill loading or tool calls.":
@@ -31,4 +33,4 @@
   - text: DeepSeek-V4-Flash
   - img
 - button "Send message" [disabled]
-- text: 1 turns · 1 steps Cache hit 99% Input 7.8K tok · Output 79 tok
+- text: 1 turns · 1 steps Context 6% of 128K Cache hit 99% Input 7.8K tok · Output 79 tok
diff --git a/apps/web/tests/snapshots/message-actions/ui.expected.md b/apps/web/tests/snapshots/message-actions/ui.expected.md
index 9aed20cfce..34ce19a69f 100644
--- a/apps/web/tests/snapshots/message-actions/ui.expected.md
+++ b/apps/web/tests/snapshots/message-actions/ui.expected.md
@@ -10,22 +10,16 @@
 - tooltip "Copy"
 - button "Branch into a new conversation":
   - img
-- button "Edit":
-  - img
 - button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
   - img
   - img
   - text: Think The user wants me to read a.txt and b.txt, then reply with "DONE". Let me do both reads in parallel.
-- button "Read a.txt":
-  - img
-  - img
-  - text: Read
-  - button "a.txt"
-- button "Read b.txt":
-  - img
-  - img
-  - text: Read
-  - button "b.txt"
+- img
+- text: Read
+- button "a.txt"
+- img
+- text: Read
+- button "b.txt"
 - button "Think Both files have been read. a.txt contains \"alpha\" and b.txt contains \"beta\". I'll now reply with DONE as instructed.":
   - img
   - img
diff --git a/apps/web/tests/snapshots/onboarding-deepseek-config/welcome.expected.md b/apps/web/tests/snapshots/onboarding-deepseek-config/welcome.expected.md
index 765c07c4b7..33e3d79fce 100644
--- a/apps/web/tests/snapshots/onboarding-deepseek-config/welcome.expected.md
+++ b/apps/web/tests/snapshots/onboarding-deepseek-config/welcome.expected.md
@@ -1,10 +1,9 @@
 - region "内测声明":
   - heading "内测声明" [level=2]
-  - paragraph: 感谢您愿意拨冗试用 DeepSeek Harness。
-  - paragraph: 目前的版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。
+  - paragraph: 感谢您愿意拨冗试用 DeepSeek Harness。当前版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。
   - blockquote: “如切如磋，如琢如磨。” 产品的成长，离不开一次次真实的碰撞与坦诚的反馈。您在真实使用中发现的问题，也可能促使我们重新审视，甚至推翻已有的设计。
   - paragraph:
-    - text: 我们尤其希望听见那些失败、困惑与不顺手的时刻——
+    - text: 为了帮助我们更准确地还原您真实使用中的问题，内测版本默认会上传所有 Session Log；如需关闭，可以设置环境变量 DSH_TELEMETRY_DISABLED=1。另外，
     - strong: 如果您有任何反馈与建议，请在企业微信群中留言告诉我们
     - text: 。每一条反馈，都会帮助我们把它打磨得更好。
   - button "继续"
diff --git a/apps/web/tests/snapshots/permission-policy-context/session.jsonl b/apps/web/tests/snapshots/permission-policy-context/session.jsonl
new file mode 100644
index 0000000000..05db0742e3
--- /dev/null
+++ b/apps/web/tests/snapshots/permission-policy-context/session.jsonl
@@ -0,0 +1,124 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785421232654,"cwd":"{{cwd}}/workspace"}
+{"type":"command/run","seq":0,"time":1785421232715,"data":{"commandId":"cmd-56ed2b36-1","name":"permission","args":" read-only","source":{"kind":"user"}}}
+{"type":"permission/preset","seq":1,"time":1785421232715,"data":{"preset":"read-only"}}
+{"type":"sandbox/mode","seq":2,"time":1785421232716,"data":{"mode":"read-only"}}
+{"type":"approval/policy","seq":3,"time":1785421232716,"data":{"policy":"ask"}}
+{"type":"command/done","seq":4,"time":1785421232716,"data":{"commandId":"cmd-56ed2b36-1","kind":"success","text":"Permission preset: read-only."}}
+{"type":"turn/start","seq":5,"time":1785421232753,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user","rpcId":"{{rpcId}}"}}}}
+{"type":"user/message","seq":6,"time":1785421232754,"data":{"content":[{"type":"text","text":"Can you create or edit a normal file right now under the current policy? Answer directly in one sentence. Do not call a tool just to discover the policy."}],"source":{"kind":"user","rpcId":"{{rpcId}}"},"role":"user","id":"93b20d7f-b280-4a61-8ae4-66764f8a541e"},"surfaceOp":"append"}
+{"type":"session/title","seq":7,"time":1785421232754,"data":{"title":"Can you create or edit","messageSeqs":[6],"source":{"kind":"fallback"}}}
+{"type":"user/message","seq":8,"time":1785421232818,"data":{"content":[{"type":"text","text":"\nA skill is a reusable set of task-specific instructions. The following skills are available in this session:\n\n\n- `15-05-premortem`: Use before starting risky work — rebases, large refactors, multi-file migrations, or deploys — to identify failure modes and mitigations in advance.\n- `acceptance-criteria`: 检查Acceptance Criteria格式和完整性，验证是否符合Given-When-Then结构、覆盖正常流程/边界条件/异常场景。适合在为User Story编写AC后、准备测试用例前使用，当需要验收AC质量时。帮助不熟悉BDD的PM/BA确保AC明确、可测试、覆盖完整，避免遗漏关键场景。\n- `agents-sdk`: Build AI agents on Cloudflare Workers using the Agents SDK. Load when creating stateful agents, durable workflows, real-time WebSocket apps, scheduled tasks, MCP servers, chat applications, voice agents, or browser automation. Covers Agent class, state management, callable RPC, Workflows, durable execution, queues, retries, observability, and React hooks. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.\n- `aico-pm-user-story-writing`: Transform requirements into well-structured User Stories using \"As a [user], I want [goal], So that [benefit]\" format with Given/When/Then acceptance criteria. Use this skill when: - User asks to \"write user story\", \"create story\", \"add story\" - User mentions \"user story\", \"backlog item\", \"story\" - Running /pm.plan and need to break PRD into implementable stories - Creating backlog items for development team - Need to formalize a requirement into standard story format - Converting feature req...\n- `algorithmic-art`: Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright violations.\n- `animation-vocabulary`: Reverse-lookup glossary that turns a vague description of a web animation or motion effect into its exact term (\"the bouncy thing when a popover opens\" → Pop in; \"the iOS rubber-band scroll\" → Rubber-banding). Use when the user asks \"what's it called when…\", or describes a motion effect without knowing its name and wants the right word to prompt an AI or designer with. For naming an effect, not designing or building one.\n- `app-comprehensive-test-generator`: Generate exhaustive user-flow and edge-case test scenarios from an app's codebase, produce scenario .md files, execute tests using connected or newly created MCPs, and produce an app.qa.report.md summarizing failures and suggested fixes.\n- `apple-design`: Apple's approach to interface design and fluid, physical motion, translated for the web. Use when building or reviewing gesture-driven UI, spring animations, drag/swipe/sheet interactions, momentum and interruptible transitions, translucent materials and depth, typography (optical sizing, tracking, leading), reduced-motion, or the design foundations (feedback, spatial consistency, restraint) behind Apple-style interfaces.\n- `brainstorming`: You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.\n- `brand-guidelines`: Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.\n- `canvas-design`: Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.\n- `claude-api`: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration. TRIGGER — read BEFORE opening the target file; don't skip because it \"looks like a one-liner\" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answ...\n- `cloudflare`: Comprehensive Cloudflare platform skill covering Workers, Pages, storage (KV, D1, R2), AI (Workers AI, Vectorize, Agents SDK), feature flags (Flagship), networking (Tunnel, Spectrum), security (WAF, DDoS), and infrastructure-as-code (Terraform, Pulumi). Use for any Cloudflare development task. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.\n- `cloudflare-email-service`: Send and receive transactional emails with Cloudflare Email Service (Email Sending + Email Routing). Use when building email sending (Workers binding or REST API), email routing, Agents SDK email handling, or integrating email into any app — Workers, Node.js, Python, Go, etc. Also use for email deliverability, SPF/DKIM/DMARC, wrangler email setup, MCP email tools, or when a coding agent needs to send emails. Even for simple requests like \"add email to my Worker\" — this skill has critical conf...\n- `cloudflare-one`: Guides Cloudflare One Zero Trust and SASE work across Access, Gateway, WARP, Tunnel, Cloudflare WAN, DLP, CASB, device posture, and identity. Use when designing, configuring, troubleshooting, or reviewing Cloudflare One deployments. Retrieval-first: use current Cloudflare docs/API schemas instead of embedded product docs.\n- `cloudflare-one-migrations`: Plans migrations from Zscaler ZIA/ZPA, Palo Alto, legacy VPN, SWG, or SASE stacks to Cloudflare One. Use for migration assessments, policy mapping, rollout plans, and parity/gap analysis.\n- `code-review`: Review the changes since a fixed point (commit, branch, tag, or merge-base) along two axes — Standards (does the code follow this repo's documented coding standards?) and Spec (does the code match what the originating issue/PRD asked for?). Runs both reviews in parallel sub-agents and reports them side by side. Use when the user wants to review a branch, a PR, work-in-progress changes, or asks to \"review since X\".\n- `codebase-design`: Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-navigable, or when another skill needs the deep-module vocabulary.\n- `content-refiner`: Refine verbose educational content by eliminating redundancy, tightening prose, and strengthening lesson connections. Use when content is wordy, repetitive, or lacks narrative flow between sections.\n- `context-compression`: This skill should be used when long-running agent sessions need context compression, structured summarization, compaction, token-per-task optimization, or durable handoff summaries that preserve decisions, files, risks, and next actions.\n- `create-feishu-doc`: Create a Feishu document and grant edit permissions to the user. Use when asked to write content to Feishu or create a document in a wiki space.\n- `design-compass`: Use when doing any product or UI design work — brainstorming a feature, starting a visual/interaction direction, reviewing half-built UI, or final-checking before ship; also when unsure which design skill applies. 产品设计 / 界面设计 / 交互设计 / UI review / 脑暴 / 视觉方向 / 设计验收时使用。\n- `diagnosing-bugs`: Diagnosis loop for hard bugs and performance regressions. Use when the user says \"diagnose\"/\"debug this\", or reports something broken/throwing/failing/slow.\n- `doc-coauthoring`: Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.\n- `docx`: Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Claude needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with tracked changes, (4) Adding comments, or any other document tasks\n- `domain-modeling`: Build and sharpen a project's domain model. Use when the user wants to pin down domain terminology or a ubiquitous language, record an architectural decision, or when another skill needs to maintain the domain model.\n- `durable-objects`: Create and review Cloudflare Durable Objects. Use when building stateful coordination (chat rooms, multiplayer games, booking systems), implementing RPC methods, SQLite storage, alarms, WebSockets, or reviewing DO code for best practices. Covers Workers integration, wrangler config, and testing with Vitest. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.\n- `ego-browser`: ego-browser (ego-lite) is a Chromium-based browser designed from the ground up to be friendly to both human users and AI Agents. AI Agents work in their own isolated space, reusing the user's login state without competing for the browser. Use this skill whenever the user needs to interact with a website opening pages, filling forms, clicking buttons, taking screenshots, extracting page data, testing web apps, logging into sites, automating browser operations, or any other browser automation t...\n- `emil-design-eng`: This skill encodes Emil Kowalski's philosophy on UI polish, component design, animation decisions, and the invisible details that make software feel great.\n- `feishu-workflow`: 飞书文档全流程管理 — 搜索、创建、编辑 wiki 文档，支持内容排版、表格、代码块、白板\n- `find-animation-opportunities`: Search a codebase or UI for places that don't animate but should, and reject everything that shouldn't. Read-only; it proposes motion with exact values, it does not implement it. Use when the user asks \"what could be animated here?\" or wants to \"make this feel more alive\". For fixing existing animations, use improve-animations or review-animations instead.\n- `frontend-design`: Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Helps with aesthetic direction, typography, and making choices that don't read as templated defaults.\n- `gap-to-topic`: Turn a research area into a go/no-go decision dossier for ONE candidate thesis/proposal topic — a 3-gate verdict (is the gap open? is it a contribution? is it feasible?) with the evidence laid out so the researcher can verify it. Use when the user asks \"is this gap worth pursuing\", \"help me pick a thesis topic\", \"is this idea already taken\", \"find me a defensible research gap\", \"vet this research idea before I commit\", or \"should I do this\". NOT a literature review (use `literature-triage-mat...\n- `gc-minimal-zine-poster-v0-1`: Generate Minimal Zine Poster v0.1 poetic paper-poster prompts and the matching generated image. Use when the user gives a theme, sentence, object, mood, article idea, photo, or content brief and wants a quiet Japanese/Korean zine-like editorial poster with large negative space, aged paper texture, experimental typography, restrained color accents, and a generated bitmap image.\n- `grilling`: Grill the user relentlessly about a plan, decision, or idea. Use when the user wants to stress-test their thinking, or uses any 'grill' trigger phrases.\n- `grillme-workflow`: Use when implementing complex multi-step tasks that benefit from structured plan review, multi-model validation, and post-execution verification\n- `humanizer`: Remove signs of AI-generated writing from text. Use when editing or reviewing text to make it sound more natural and human-written. Based on Wikipedia's comprehensive \"Signs of AI writing\" guide. Detects and fixes patterns including: inflated symbolism, promotional language, superficial -ing analyses, vague attributions, em dash overuse, rule of three, AI vocabulary words, passive voice, negative parallelisms, and filler phrases.\n- `improve-animations`: Survey a codebase's animation and motion code as a senior motion advisor, then produce a prioritized audit and self-contained implementation plans for other agents (or cheaper models) to execute. Read-only on source code — it plans improvements, it does not apply them. Use when the user asks to \"improve the animations\", \"audit the motion\", \"make this app feel better\", or wants a roadmap of animation fixes rather than a review of a single diff.\n- `internal-comms`: A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.).\n- `lark-approval`: 飞书审批：查询和处理审批待办/已办/实例，搜索可发起审批定义、查看定义详情并发起原生审批实例。当用户要处理审批任务、查看审批实例、搜索或发起审批时使用。审批待办不是飞书任务；非审批类待办走 lark-task。不负责创建审批定义；三方审批定义不走原生提单。\n- `lark-apps`: 妙搭（Spark/Miaoda）应用开发与托管：应用创建、本地全栈开发、云端生成迭代、创意设计（UI mockup / 可交互原型 / 线框图 / 落地页 / 仪表盘 / 幻灯片 deck / 视觉探索）、AI相关能力和飞书平台能力或者其他外部能力集成、日志/Trace/监控指标/PV/UV 查询、环境变量管理、应用角色与成员管理、自动化触发器（定时/记录变更/Webhook/飞书审批）。当用户要开发/新建一个系统·工具·平台·应用，或要本地开发 / 云端开发 / 修改 / 部署 / 发布 / 上线 / 拿可分享链接，或用 HTML 做页面·网站·部署到妙搭，或要设计 / design / mockup / prototype / wireframe / 做 PPT / deck / 视觉探索，或提到妙搭/Spark/Miaoda（应用运行时域名形如 *.aiforce.cloud）、应用数据库、应用文件存储、开放 API Key、可见范围、应用角色/角色成员、线上日志、接口请求量、错误量、延迟、访问量、环境变量、给妙搭应用配自动化任务/定时触发/审批通过后自动触发时使用。不负责...\n- `lark-attendance`: 飞书考勤打卡：查询自己的考勤打卡记录\n- `lark-base`: 飞书多维表格（Base）操作：建表、字段、记录、视图、统计、公式/lookup、表单、仪表盘、workflow、角色权限；遇到 Base/多维表格/bitable 或 /base/ 链接时使用。文件导入转 lark-drive，认证/授权转 lark-shared。\n- `lark-calendar`: 飞书日历：管理日历日程和会议室。查看/搜索日程、创建/更新日程、管理参会人、查询忙闲和推荐时段、预定会议室。当用户需要查看日程安排、创建/修改会议、查询/预定会议室时使用。不负责：查询过去的视频会议记录（走 lark-vc）、待办任务（走 lark-task）。\n- `lark-contact`: 飞书 / Lark 通讯录:按姓名 / 邮箱解析成 open_id,或按 open_id 反查姓名 / 部门 / 邮箱 / 联系方式 / 个人状态 / 签名。当用户提到某人姓名要下一步发消息 / 排日程,或拿到 open_id 想查具体信息时使用。不负责部门树遍历、按部门列员工、组织架构图,这类需求走原生 OpenAPI。\n- `lark-doc`: 飞书云文档（Docx / Wiki 文档）：读取和编辑飞书文档内容。当用户给出文档 URL 或 token，或需要查看、创建、编辑文档、插入或下载文档图片附件时使用。文档中嵌入的电子表格、多维表格、画板，先用本 skill 提取 token 再切到对应 skill。当用户给出 doubao.com 的 /docx/ 或 /wiki/ URL/token 时，也应直接使用本 skill；路由依据是 URL 路径模式和 token，而不是域名。不负责文档评论管理，也不负责表格或 Base 的数据操作。当用户明确要操作飞书思维笔记时，也使用本 skill。\n- `lark-drive`: 飞书云空间（云盘/云存储）：管理 Drive 文件和文件夹，包含上传/下载、创建文件夹、复制/移动/删除、查看元数据、评论/权限/订阅、标题、版本、飞书文档密级标签（secure labels）和本地文件导入。用户需要整理云盘目录、处理云空间资源 URL/token、判断链接类型/真实 token/标题，或导入 Word/Markdown/Excel/CSV/PPTX/.base 为 docx/sheet/bitable/slides 时使用；doubao.com 云空间 URL/token 也按资源路径和 token 路由，不回退 WebFetch。不负责：文档内容编辑（走 lark-doc）、表格/Base 表内数据操作（走 lark-sheets/lark-base）、知识空间节点/成员管理（走 lark-wiki）、原生 Markdown 文件读写/patch/diff（走 lark-markdown）。\n- `lark-event`: Lark/Feishu real-time event listening / subscribing / consuming: stream events as NDJSON via `lark-cli event consume <EventKey>` (covers IM messages/reactions/chat changes, Approval status changes, Task updates, VC meeting started/joined/ended, Minutes generated, Whiteboard updated, etc.). Use for Lark bots, real-time message processing, long-running subscribers, streaming webhook/push handlers. Supports `--max-events` / `--timeout` bounded runs and a stderr ready-marker contract — designed f...\n- `lark-im`: 飞书即时通讯：收发消息和管理群聊。发送和回复消息、搜索聊天记录、管理群聊成员、上传下载图片和文件（支持大文件分片下载）、管理表情回复、发送应用内/短信/电话加急、发送和处理交互卡片（Interactive Card）、监听卡片按钮回调（card.action.trigger）。当用户需要发消息、查看或搜索聊天记录、下载聊天中的文件、查看群成员、搜索群、创建群聊或话题群、管理标记数据、管理 Feed 置顶（添加/移除/查询置顶会话）、管理标签数据、处理卡片回调时使用。\n- `lark-mail`: 飞书邮箱：Use when user mentions 起草邮件、写邮件、草稿、发送/回复/转发邮件、查阅邮件、看邮件、搜索邮件、邮件文件夹、邮件标签、邮件联系人、监听新邮件、邮件收信规则等；use for mail/email intent only. Do not use for docs/sheets/calendar/auth setup/pure contact lookup/IM chat tasks.\n- `lark-markdown`: 飞书 Markdown：查看、创建、上传、编辑和比较 Markdown 文件。当用户需要创建或编辑 Markdown 文件、读取、修改、局部 patch 或比较差异时使用。不负责将 Markdown 导入为飞书在线文档，也不负责文件搜索、权限、评论、移动、删除等云空间管理操作。\n- `lark-minutes`: 飞书妙记：搜索妙记、查看妙记基础信息、下载/上传音视频、读取或编辑妙记的产物内容、改标题、替换说话人/关键词、申请妙记查看/编辑权限。当给出minute_token、本地音视频文件，要查/改/转妙记产物，或用户明确要主动申请妙记权限时使用；本地音视频转纪要/逐字稿优先走本 skill，不要用 ffmpeg/whisper 本地转写。不负责：获取会议关联妙记，或仅按自然语言标题定位纪要\n- `lark-note`: 飞书会议纪要（Note）直查：已知 note_id 时查询纪要详情、展示类型、关联文档 token，并读取 unified 原始逐字记录。当用户已持有 note_id，或从文档显式 vc-node-id 获得 note_id 时使用。不负责会议/日程/妙记定位、文档标题搜索或 Docx 正文读取。\n- `lark-okr`: 飞书 OKR：管理目标与关键结果。查看和编辑 OKR 周期、目标、关键结果、对齐关系、量化指标和进展记录。当用户需要查看或创建 OKR、管理目标和关键结果、查看对齐关系时使用。不负责：待办任务管理（lark-task）、日程/会议安排（lark-calendar）、绩效评估\n- `lark-openapi-explorer`: 飞书/Lark 原生 OpenAPI 探索：从官方文档库中挖掘未经 CLI 封装的原生 OpenAPI 接口。当用户的需求无法被现有 lark-* skill 或 lark-cli 已注册命令满足，需要查找并调用原生飞书 OpenAPI 时使用。\n- `lark-shared`: Use for lark-cli setup/auth tasks: auth login/status/logout, user vs bot identity, business-domain permissions (--domain, including all/docs/drive), missing scopes, revoking authorization, or handling _notice JSON.\n- `lark-sheets`: 飞书电子表格：创建和操作电子表格。支持创建表格、管理工作表与行列结构（增删/合并/调整尺寸/隐藏/冻结）、读写单元格（值/公式/样式/批注/单元格图片）、查找替换、多操作原子批量更新，以及图表、透视表、条件格式、筛选器、迷你图、浮动图片等对象的创建与维护。当用户需要创建电子表格、管理工作表、批量读写或编辑数据、统计汇总与可视化、表格美化、公式计算（含 Excel 公式迁移）、金融/财务建模（DCF、三张表、预算、Sensitivity 等）等任务时使用。若用户是想按名称或关键词搜索云空间（云盘/云存储）里的表格文件，请改用 lark-drive 的 drive +search 先定位资源。当用户给出 doubao.com 的 /sheets/ URL/token 时，也应直接使用本 skill，不要因为域名不是飞书而回退到 WebFetch；路由依据是 URL 路径模式和 token，而不是域名。\n- `lark-skill-maker`: 创建 lark-cli 的自定义 Skill。当用户需要把飞书 API 操作封装成可复用的 Skill（包装原子 API 或编排多步流程）时使用。\n- `lark-slides`: 飞书幻灯片：创建和编辑幻灯片。创建演示文稿、读取幻灯片内容、管理幻灯片页面（创建、删除、读取、局部替换）。当用户需要创建或编辑幻灯片、读取或修改单个页面时使用。当用户给出 doubao.com 的 /slides/ URL/token 时，也应直接使用本 skill，不要因为域名不是飞书而回退到 WebFetch；路由依据是 URL 路径模式和 token，而不是域名。不负责：云文档内容编辑（走 lark-doc）、云文档里的独立画板对象（走 lark-whiteboard）、上传或下载普通文件（走 lark-drive）。\n- `lark-task`: 飞书任务：管理任务、清单和任务智能体。创建待办任务、查看和更新任务状态、拆分子任务、组织任务清单、分配协作成员、上传任务附件、注册或注销任务智能体、更新任务智能体的主页数据、写入智能体任务记录。当用户需要创建待办事项、查看任务列表、跟踪任务进度、管理项目清单或给他人分配任务、为任务上传附件文件、注册注销任务智能体、更新智能体主页数据、写入任务记录时使用。\n- `lark-vc`: 飞书视频会议：搜索历史会议记录、查询会议纪要（总结/待办/章节/逐字稿）、查询参会人快照。当用户查询已结束的会议、获取会议产物（纪要/妙记）、查看参会人时使用；查询未来日程走 lark-calendar。不负责：Agent 真实入会/离会、会中实时事件（走 lark-vc-agent）。\n- `lark-vc-agent`: 飞书视频会议会中能力：用于让应用机器人真实加入或离开正在进行的会议，并读取当前身份可见的会中事件、发送会中文本消息或会中表情。适用于用户询问正在开的会议发生了什么、谁在发言、是否共享内容，或需要发现当前可读的进行中会议 ID。不负责已结束会议搜索、参会人快照、纪要、逐字稿或录制查询，这些使用 lark-vc 技能。\n- `lark-whiteboard`: 飞书画板：查询和编辑飞书云文档中的画板。支持导出画板为预览图片、导出原始节点结构、使用多种格式更新画板内容。 当用户需要查看画板内容、导出画板图片、编辑画板时使用此 skill。不负责：飞书云文档内容编辑（lark-doc）、文档内嵌电子表格/Base（lark-sheets / lark-base）。\n- `lark-whiteboard-bindao`: 画板画图 skill。覆盖端到端流程：审美判断 → SVG 创作 → 渲染审查 → 写入飞书画板。 核心是审美标准（高于一切技术约束），技术流程基于 lark-whiteboard skill 的 SVG 路径。 触发：任何需要画图/画框架/画流程/可视化的场景。\n- `lark-wiki`: 飞书知识库：管理知识空间、空间成员和文档节点。创建和查询知识空间、查看和管理空间成员、管理节点层级结构、在知识库中组织文档和快捷方式。当用户需要在知识库中查找或创建文档、浏览知识空间结构、查看或管理空间成员、移动或复制节点时使用。当用户给出 doubao.com 的 /wiki/ URL/token 时，也应直接使用本 skill，不要因为域名不是飞书而回退到 WebFetch；路由依据是 URL 路径模式和 token，而不是域名。不负责：上传文件到知识库节点下（走 lark-drive）、编辑文档/表格/Base 内容（走 lark-doc / lark-sheets / lark-base）。\n- `lark-workflow-meeting-summary`: 会议纪要整理工作流：汇总指定时间范围内的会议纪要并生成结构化报告。当用户需要整理会议纪要、生成会议周报、回顾一段时间内的会议内容时使用。\n- `lark-workflow-standup-report`: 日程待办摘要：编排 calendar +agenda 和 task +get-my-tasks，生成指定日期的日程与未完成任务摘要。适用于了解今天/明天/本周的安排。\n- `latent-briefing`: This skill should be used when the user asks to \"share memory between agents\", \"KV cache compaction for multi-agent\", \"orchestrator worker context\", \"latent briefing\", \"reduce worker tokens\", \"cross-agent memory without summarization\", or discusses Attention Matching compaction, recursive language models with workers, or token explosion in hierarchical agents.\n- `literature-triage-matrix`: Turn a list of papers (Zotero collection, Obsidian cluster, manual list) into a compact comparison matrix written to .research/literature_matrix.md, instead of generic per-paper summaries. Use when the user asks to \"make a literature matrix\", \"compare these papers by method/data/limitations\", or \"decide which papers are central to my review\". If the user says \"extract the claims from these papers\": cross-paper comparison matrix → this skill; claims from their own manuscript draft → `paper-mem...\n- `mcp-builder`: Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).\n- `memory-systems`: This skill should be used for persistent semantic memory in agent systems: cross-session knowledge retention, entity tracking, temporal validity, graph or vector retrieval, memory consolidation, and memory benchmark selection. Route file-backed scratchpads to filesystem-context, handoff summaries to context-compression, and token-efficiency tactics to context-optimization.\n- `multi-agent-patterns`: This skill should be used when designing multi-agent systems that need context isolation, supervisor or swarm coordination, explicit handoffs, parallel execution, or a decision on whether multiple agents are justified.\n- `notebooklm-brief-verifier`: Compare a downloaded NotebookLM brief against the source bundle research-hub uploaded, and report missed sources, unsupported claims, contradictions, and recommended follow-up prompts. Use when the user asks to \"verify this NotebookLM brief\", \"check if the brief missed anything\", or \"compare downloaded notes to the cluster papers\".\n- `paper-memory-builder`: Convert a paper draft + figures + Zotero metadata into reusable .paper/claims.yml and .paper/figures.yml files so the academic-writing-skills skill can do writing, revision, and audit passes without re-reading the manuscript every time. Use when the user asks to \"build paper memory\", \"extract claims from this manuscript\", \"extract claims, supporting evidence, and figure key numbers\", or \"prepare this paper for AI-assisted writing\". NOT for summarizing cited papers in a literature cluster — th...\n- `paper-summarize`: After research-hub ingests a cluster of cited papers, fill the per-paper Key Findings + Methodology + Relevance sections in BOTH Obsidian markdown and the Zotero child note. Use when the user says \"fill the TODO Key Findings/Methodology blocks left by research-hub auto\", \"I just ran auto and don't know what these papers are about\", or \"summarize the papers in cluster X\". Invokes a supported LLM CLI on each paper's abstract. NOT for summarizing the user's own manuscript draft — that's `paper-m...\n- `pdf`: Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/decrypting PDFs, extracting images, and OCR on scanned PDFs to make them searchable. If the user mentions a .pdf file or asks to produce one, use this skill.\n- `pptx`: Use this skill any time a .pptx file is involved in any way — as input, output, or both. This includes: creating slide decks, pitch decks, or presentations; reading, parsing, or extracting text from any .pptx file (even if the extracted content will be used elsewhere, like in an email or summary); editing, modifying, or updating existing presentations; combining or splitting slide files; working with templates, layouts, speaker notes, or comments. Trigger whenever the user mentions \"deck,\" \"s...\n- `prototype`: Build a throwaway prototype to answer a design question. Use when the user wants to sanity-check whether a state model or logic feels right, or explore what a UI should look like.\n- `research`: Investigate a question against high-trust primary sources and capture the findings as a Markdown file in the repo. Use when the user wants a topic researched, docs or API facts gathered, or reading legwork delegated to a background agent.\n- `research-add-fields`: 向现有调研outline补充字段定义。\n- `research-add-items`: 向现有调研outline补充items（调研对象）。\n- `research-chapter-ops`: Use when beginning work on a thesis chapter — creates and maintains the Chapter Operations Document (OPS file) with structure, decisions, error triggers, and cross-section conventions. Triggers on 'new chapter', 'chapter operations', 'OPS file', 'chapter setup', 'chapter-level coordination'.\n- `research-citation-management`: Use when managing citations in thesis writing — three-pipeline system for gap analysis, verification, and programmatic insertion with dual-AI cross-verification. Triggers on 'add citations', 'citation gaps', 'verify references', 'insert citations', 'reference management', 'bibliography'.\n- `research-context-compressor`: Inspect a research repository and write a compact `.research/` workspace manifest (project_manifest.yml, experiment_matrix.yml, data_dictionary.yml) so future AI sessions can orient themselves without rescanning the whole repo. Use when the user asks to \"compress this project context\", \"create a research manifest\", or \"save the project context for future agents\".\n- `research-deep`: 读取调研outline，为每个item启动独立agent进行深度调研。禁用task output。\n- `research-design-helper`: Guide a researcher through 5 Socratic segments — research question sharpening, expected mechanism, identifiability check, validation plan, risk register — and produce `.research/design_brief.md`. Use when the user asks to \"frame this research question\", \"design my study\", \"help me think through what model to build\", \"sharpen my hypothesis\", \"is my research question sharp enough to be falsifiable?\", or \"before I start coding, walk me through the design\". Runs AFTER a topic is chosen — it desig...\n- `research-error-log`: Use when creating, structuring, or extending the project Error Log (`CLAUDE_ERROR_LOG.md` / `CLAUDE_ERROR_LOG_V2.md`) — defines the dual-track archive/active format, three-layer V2 architecture, pattern entry schema, add-new-pattern protocol, and how postmortem / brief / review skills interface with it. Triggers on 'error log', 'new error pattern', 'add pattern to log', 'set up error log', 'V2 checklist', 'CLAUDE_ERROR_LOG', 'how does the error log work'.\n- `research-figure-generation`: Use when creating publication-quality figures for thesis — pipeline from raw data through verification, generation, researcher review, to Word document integration. Triggers on 'create figure', 'plot data', 'generate figure', 'thesis figures', 'insert figures into Word'.\n- `research-gemini-review`: Use after Claude writes any thesis prose draft — invokes Gemini API as an independent cross-model critic to eliminate self-preference bias. REQUIRED after research-writing-brief produces prose and before research-three-stage-review can be considered final. Triggers on 'review this draft', 'cross-model review', 'Gemini check', 'independent review of thesis prose'.\n- `research-hub`: Operate research-hub workflows for literature discovery, source ingest into Zotero/Obsidian/NotebookLM, dashboard inspection, and vault maintenance. Use when the user asks to find papers and organize them, build a knowledge base, ingest a folder of PDFs, upload to NotebookLM, generate research briefs, inspect clusters, or maintain a research vault. NOT for auditing or cleaning up an existing Zotero library — that's `zotero-library-curator` (read-only audit) plus `zotero-skills` (for CRUD).\n- `research-hub-multi-ai`: Research-domain router that writes `.coord/multi_ai_plan.md` when a single round of work will need two or more delegates AND the work touches research-hub artifacts (`.research/`, `.paper/`, Zotero/Obsidian/NotebookLM pipelines). For a single delegate, use `codex-delegate` or `gemini-delegate` directly — do not invoke this skill. For generic non-research multi-agent decomposition (pure code refactor, generic translation, no research-hub artifact), use `agent-collab-workspace:agent-task-splitt...\n- `research-paper-adaptation`: Use when converting a published paper (where researcher is author) into a thesis chapter — adaptation protocol with side-by-side verification and change classification. Triggers on 'adapt paper', 'paper to thesis', 'convert publication', 'published paper chapter', 'adapt manuscript'.\n- `research-postmortem`: Use when a thesis draft is rejected and must be rewritten from scratch — structured 5-part investigation into process failure with root cause analysis and systemic action items. Triggers on 'draft rejected', 'rewrite from scratch', 'writing failure', 'postmortem', 'what went wrong with the draft'.\n- `research-pre-writing-discussion`: Use before creating a Writing Brief for any thesis section — structured interview to extract researcher's knowledge, judgments, and decisions through three phases. Triggers on 'discuss section', 'plan what to write', 'pre-writing discussion', 'before writing brief', 'extract knowledge for section'.\n- `research-project-orienter`: Read the .research/ manifest files at a project root and produce a single orientation memo (research question, datasets, current stage, key entrypoints, evidence artifacts, open questions). Use when the user asks to \"orient me in this project\", \"what is this repo about\", or \"build a context map for this paper\" — and the project already has .research/ manifests (or trigger research-context-compressor first).\n- `research-report`: 将deep调研结果汇总为markdown报告，覆盖所有字段，跳过不确定值。\n- `research-session-management`: Use when starting or ending any thesis writing session — manages INDEX files, handoff documents, and startup/shutdown protocols for cross-session continuity. Triggers on 'new thesis session', 'session handoff', 'continue thesis work', 'pick up where left off', 'end session'.\n- `research-style-audit`: Use after completing any thesis section draft — runs programmatic style audit to catch Pattern\n- `research-task-file`: Use when creating self-contained task files for autonomous AI agent execution — goal-oriented instructions with context, decision frameworks, and validation criteria. Triggers on 'create task file', 'autonomous task', 'agent task', 'data extraction task', 'TASK file', 'batch processing task'.\n- `research-three-stage-review`: Use after completing a thesis prose draft — runs three independent review stages with different perspectives and information access. Triggers on 'review draft', 'check section', 'draft review', 'quality check', 'before sending to advisor'.\n- `research-writing`: Use when starting any academic thesis or dissertation writing task — routes to the correct thesis sub-skill based on the current phase of work. Triggers on 'thesis', 'dissertation', 'chapter writing', 'section writing', 'defense prep', 'academic writing with AI'.\n- `research-writing-brief`: Use when planning any thesis section before writing prose — creates a Writing Brief with boundary rules, internalization check, verified data table, and paragraph-level outline with argumentative purposes. Triggers on 'plan section', 'write section X.Y', 'prepare to write', 'writing brief', 'section outline'.\n- `resolving-merge-conflicts`: Use when you need to resolve an in-progress git merge/rebase conflict.\n- `sandbox-sdk`: Build sandboxed applications for secure code execution. Load when building AI code execution, code interpreters, CI/CD systems, interactive dev environments, or executing untrusted code. Covers Sandbox SDK lifecycle, commands, files, code interpreter, and preview URLs. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.\n- `scheduled-task-planner`: 分析定时任务需求，确定最优部署方案（Cloudflare Worker 或本地 launchd）\n- `sequential-thinking`: Structured reflective problem-solving methodology. Process: decompose, analyze, hypothesize, verify, revise. Capabilities: complex problem decomposition, adaptive planning, course correction, hypothesis verification, multi-step analysis. Actions: decompose, analyze, plan, revise, verify solutions step-by-step. Keywords: sequential thinking, problem decomposition, multi-step analysis, hypothesis verification, adaptive planning, course correction, reflective thinking, step-by-step, thought sequ...\n- `skill-creator`: Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.\n- `slack-gif-creator`: Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like \"make me a GIF of X doing Y for Slack.\"\n- `tdd`: Test-driven development. Use when the user wants to build features or fix bugs test-first, mentions \"red-green-refactor\", or wants integration tests.\n- `test`: Test features before users find bugs. Use when feature is built, before deploying, or when bugs reported. Covers manual testing, edge cases, cross-browser testing, and testing checklists for non-technical founders.\n- `theme-factory`: Toolkit for styling artifacts with a theme. These artifacts can be slides, docs, reportings, HTML landing pages, etc. There are 10 pre-set themes with colors/fonts that you can apply to any artifact that has been creating, or can generate a new theme on-the-fly.\n- `turnstile-spin`: Set up Cloudflare Turnstile end-to-end in a project — scan the codebase, create the widget via the Cloudflare API, deploy the managed siteverify Worker, write the frontend snippets, validate, and persist the skill. Load this when a user asks to add Turnstile, set up CAPTCHA, protect a form from bots, or fix a Turnstile integration. Mirrors developers.cloudflare.com/turnstile/spin.\n- `web-artifacts-builder`: Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components - not for simple single-file HTML/JSX artifacts.\n- `web-perf`: Analyzes web performance using Chrome DevTools MCP. Measures Core Web Vitals (LCP, INP, CLS) and supplementary metrics (FCP, TBT, Speed Index), identifies render-blocking resources, network dependency chains, layout shifts, caching issues, and accessibility gaps. Use when asked to audit, profile, debug, or optimize page load performance, Lighthouse scores, or site speed. Biases towards retrieval from current documentation over pre-trained knowledge.\n- `webapp-testing`: Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.\n- `workers-best-practices`: Reviews and authors Cloudflare Workers code against production best practices. Load when writing new Workers, reviewing Worker code, configuring wrangler.jsonc, or checking for common Workers anti-patterns (streaming, floating promises, global state, secrets, bindings, observability). Biases towards retrieval from Cloudflare docs over pre-trained knowledge.\n- `wrangler`: Cloudflare Workers CLI for deploying, developing, and managing Workers, KV, R2, D1, Vectorize, Hyperdrive, Workers AI, Containers, Queues, Workflows, Pipelines, and Secrets Store. Load before running wrangler commands to ensure correct syntax and best practices. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.\n- `xlsx`: Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like \"the xlsx in...\n- `zotero-library-curator`: Audit and curate a Zotero library — find duplicate DOIs, orphan items missing required tags, propose collection rebinds, identify bloated or under-used collections, generate tag hygiene reports, emit preview-only cleanup plans. Use when the user asks to \"audit Zotero\", \"find duplicates\", \"tag hygiene report\", \"which collections are bloated or under-used\", or \"propose a Zotero cleanup plan\". Defers all CRUD operations to the standalone `zotero-skills` skill or `research-hub zotero` CLI. Includ...\n\n\nIf the user names a skill, or the task clearly matches a skill's description, call the `skill` tool with the exact skill name before taking task actions. Load all applicable skills, then follow their full instructions. This catalog contains summaries only; do not infer or follow a skill's instructions until it has been loaded.\n"}],"source":{"kind":"plugin","plugin":"dsh-tool-skill"},"role":"user","id":"6b1b6917-597d-4f0d-a19f-0cafb527556c"},"surfaceOp":"append"}
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+{"type":"assistant/chunk","seq":808,"time":1785421245577,"data":{"turn":4,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":211,"outputTokens":53,"cacheReadTokens":15872,"reasoningTokens":22}}}}
+{"type":"assistant/chunk","seq":809,"time":1785421245577,"data":{"turn":4,"step":4,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":810,"time":1785421245577,"data":{"turn":4,"step":4,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file was created and its contents are verified: \"POLICY_NEUTRAL_OK\". Task complete."},{"type":"text","text":"Done — **policy-neutral.txt** was created (via workspace-write escalation) and verified to contain exactly `POLICY_NEUTRAL_OK`."}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"c51d0a14-ba25-42eb-ba6b-8ea4eff18216"},"usage":{"inputTokens":211,"outputTokens":53,"cacheReadTokens":15872,"reasoningTokens":22}},"sourceEventSeqs":[752,753,754,755,756,757,758,759,760,761,762,763,764,765,766,767,768,769,770,771,772,773,774,775,776,777,778,779,780,781,782,783,784,785,786,787,788,789,790,791,792,793,794,795,796,797,798,799,800,801,802,803,804,805,806,807,808,809],"surfaceOp":"append"}
+{"type":"step/end","seq":811,"time":1785421245578,"data":{"turn":4,"step":4}}
+{"type":"turn/end","seq":812,"time":1785421245578,"data":{"turn":4,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/snapshots/plan-review/approved.expected.md b/apps/web/tests/snapshots/plan-review/approved.expected.md
index a81ed0ecd4..c971a6b2e4 100644
--- a/apps/web/tests/snapshots/plan-review/approved.expected.md
+++ b/apps/web/tests/snapshots/plan-review/approved.expected.md
@@ -10,8 +10,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - 'button "Think The user wants me to plan a small change to add a `--greeting` flag to a CLI. They explicitly told me not to read or write any files, and to call exit_plan_mode with a short plan. Let me do that directly."':
   - img
   - img
@@ -42,4 +44,4 @@
   - text: DeepSeek-V4-Flash
   - img
 - button "Send message" [disabled]
-- text: 1 turns · 2 steps Tool call {{duration}} Cache hit 51% Input 10.2K tok · Output 346 tok
+- text: 1 turns · 2 steps Tool call {{duration}} Context 4% of 128K Cache hit 51% Input 10.2K tok · Output 346 tok
diff --git a/apps/web/tests/snapshots/question-composer/answered.expected.md b/apps/web/tests/snapshots/question-composer/answered.expected.md
index 03c5d84005..fec84d06db 100644
--- a/apps/web/tests/snapshots/question-composer/answered.expected.md
+++ b/apps/web/tests/snapshots/question-composer/answered.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - button "Think The user wants me to use the ask_user_question tool with specific parameters. Let me do exactly that.":
   - img
   - img
@@ -37,4 +39,4 @@
   - text: DeepSeek-V4-Flash
   - img
 - button "Send message" [disabled]
-- text: 1 turns · 2 steps Tool call {{duration}} Cache hit 95% Input 8.6K tok · Output 180 tok
+- text: 1 turns · 2 steps Tool call {{duration}} Context 3% of 128K Cache hit 95% Input 8.6K tok · Output 180 tok
diff --git a/apps/web/tests/snapshots/queue-actions/collapsed.expected.md b/apps/web/tests/snapshots/queue-actions/collapsed.expected.md
index 1780e53e48..829f21a70f 100644
--- a/apps/web/tests/snapshots/queue-actions/collapsed.expected.md
+++ b/apps/web/tests/snapshots/queue-actions/collapsed.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - paragraph: partial
 - status: Deep diving...
 - button "2 queued messages"
diff --git a/apps/web/tests/snapshots/queue-actions/editing.expected.md b/apps/web/tests/snapshots/queue-actions/editing.expected.md
index 1811d4d213..169dde2c51 100644
--- a/apps/web/tests/snapshots/queue-actions/editing.expected.md
+++ b/apps/web/tests/snapshots/queue-actions/editing.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - paragraph: partial
 - status: Deep diving...
 - button "2 queued messages" [disabled] [expanded]
diff --git a/apps/web/tests/snapshots/queue-actions/ui.expected.md b/apps/web/tests/snapshots/queue-actions/ui.expected.md
index 5786d9d88f..e2c91f7584 100644
--- a/apps/web/tests/snapshots/queue-actions/ui.expected.md
+++ b/apps/web/tests/snapshots/queue-actions/ui.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - paragraph: partial
 - status: Deep diving...
 - list:
diff --git a/apps/web/tests/snapshots/search-card/grep-card.expected.txt b/apps/web/tests/snapshots/search-card/grep-card.expected.txt
new file mode 100644
index 0000000000..3d0efb3ecd
--- /dev/null
+++ b/apps/web/tests/snapshots/search-card/grep-card.expected.txt
@@ -0,0 +1,11 @@
+kind=matches
+summary=显示 9 / 共 42 处匹配 · 3 个文件
+file=packages/client/ui-primitives/src/SearchBlock.tsx3
+file=packages/client/ui-conversation/src/client/toolviews/search-row.tsx4
+line=16: export const DEFAULT_SEARCH_MAX_LINES = 16
+line=138: export function SearchBlock(props: SearchBlockProps) {
+line=141:   const [collapsed, setCollapsed] = useState>(() => new Set())
+line=73:   const search = searchCardModel(block)
+line=90:         
+line=113:     ctx.slots.register({ name: 'conversation.chat.toolview', key: 'grep' }, SearchRow)
+expand=… 其余 4 行
\ No newline at end of file
diff --git a/apps/web/tests/snapshots/seeded-history/command-row.expected.md b/apps/web/tests/snapshots/seeded-history/command-row.expected.md
index 4712180e92..bcbac2622e 100644
--- a/apps/web/tests/snapshots/seeded-history/command-row.expected.md
+++ b/apps/web/tests/snapshots/seeded-history/command-row.expected.md
@@ -9,22 +9,16 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
-  - img
 - button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
   - img
   - img
   - text: Think The user wants me to read a.txt and b.txt, then reply with "DONE". Let me do both reads in parallel.
-- button "Read a.txt":
-  - img
-  - img
-  - text: Read
-  - button "a.txt"
-- button "Read b.txt":
-  - img
-  - img
-  - text: Read
-  - button "b.txt"
+- img
+- text: Read
+- button "a.txt"
+- img
+- text: Read
+- button "b.txt"
 - button "Think Both files have been read. a.txt contains \"alpha\" and b.txt contains \"beta\". I'll now reply with DONE as instructed.":
   - img
   - img
diff --git a/apps/web/tests/snapshots/seeded-history/ui.expected.md b/apps/web/tests/snapshots/seeded-history/ui.expected.md
index 8b8a789fd2..e29d1e8b30 100644
--- a/apps/web/tests/snapshots/seeded-history/ui.expected.md
+++ b/apps/web/tests/snapshots/seeded-history/ui.expected.md
@@ -9,22 +9,16 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
-  - img
 - button "Think The user wants me to read a.txt and b.txt, then reply with \"DONE\". Let me do both reads in parallel.":
   - img
   - img
   - text: Think The user wants me to read a.txt and b.txt, then reply with "DONE". Let me do both reads in parallel.
-- button "Read a.txt":
-  - img
-  - img
-  - text: Read
-  - button "a.txt"
-- button "Read b.txt":
-  - img
-  - img
-  - text: Read
-  - button "b.txt"
+- img
+- text: Read
+- button "a.txt"
+- img
+- text: Read
+- button "b.txt"
 - button "Think Both files have been read. a.txt contains \"alpha\" and b.txt contains \"beta\". I'll now reply with DONE as instructed.":
   - img
   - img
diff --git a/apps/web/tests/snapshots/steering/mid-steer.expected.md b/apps/web/tests/snapshots/steering/mid-steer.expected.md
index a8816f93d7..b41f6baae2 100644
--- a/apps/web/tests/snapshots/steering/mid-steer.expected.md
+++ b/apps/web/tests/snapshots/steering/mid-steer.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - button "Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.":
   - img
   - img
diff --git a/apps/web/tests/snapshots/steering/settled.expected.md b/apps/web/tests/snapshots/steering/settled.expected.md
index ba2adad29f..92269104ad 100644
--- a/apps/web/tests/snapshots/steering/settled.expected.md
+++ b/apps/web/tests/snapshots/steering/settled.expected.md
@@ -9,8 +9,10 @@
   - img
 - button "Branch into a new conversation":
   - img
-- button "Edit":
+- button "Context injection":
   - img
+  - img
+  - text: Context injection
 - button "Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.":
   - img
   - img
@@ -38,4 +40,4 @@
   - text: DeepSeek-V4-Flash
   - img
 - button "Send message" [disabled]
-- text: 1 turns · 2 steps Tool call {{duration}} Cache hit 98% Input 15.8K tok · Output 156 tok
+- text: 1 turns · 2 steps Tool call {{duration}} Context 6% of 128K Cache hit 98% Input 15.8K tok · Output 156 tok
diff --git a/apps/web/tests/snapshots/web-search-round/session.jsonl b/apps/web/tests/snapshots/web-search-round/session.jsonl
new file mode 100644
index 0000000000..bb0a15fd0b
--- /dev/null
+++ b/apps/web/tests/snapshots/web-search-round/session.jsonl
@@ -0,0 +1,12 @@
+{"type":"session","version":0,"id":"{{sessionId}}","createdAt":1785456000000,"cwd":"{{cwd}}"}
+{"type":"user/message","seq":0,"time":1785456000001,"data":{"content":[{"type":"text","text":"Use web_search to search exactly \"DeepSeek Harness snapshot search\". Then reply exactly SEARCH_DONE and stop."}],"source":{"kind":"user","rpcId":"{{rpcId}}"}},"surfaceOp":"append"}
+{"type":"assistant/chunk","seq":1,"time":1785456000002,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":2,"time":1785456000003,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_web_search","name":"web_search","argumentsDelta":"{\"query\":\"DeepSeek Harness snapshot search\"}"}}}
+{"type":"assistant/chunk","seq":3,"time":1785456000004,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_web_search","name":"web_search","arguments":"{\"query\":\"DeepSeek Harness snapshot search\"}"}}}}
+{"type":"assistant/chunk","seq":4,"time":1785456000005,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":5,"time":1785456000006,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/chunk","seq":6,"time":1785456000007,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":7,"time":1785456000008,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"SEARCH_DONE"}}}
+{"type":"assistant/chunk","seq":8,"time":1785456000009,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"SEARCH_DONE"}}}}
+{"type":"assistant/chunk","seq":9,"time":1785456000010,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":12,"outputTokens":2}}}}
+{"type":"assistant/chunk","seq":10,"time":1785456000011,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
diff --git a/apps/web/tests/snapshots/web-search-round/ui.expected.md b/apps/web/tests/snapshots/web-search-round/ui.expected.md
new file mode 100644
index 0000000000..09718300f2
--- /dev/null
+++ b/apps/web/tests/snapshots/web-search-round/ui.expected.md
@@ -0,0 +1,37 @@
+- banner:
+  - navigation "Session hierarchy":
+    - button "Use web_search to search exactly" [disabled]
+  - tablist:
+    - tab "Chat" [selected]
+    - tab "Trajectory"
+- text: Use web_search to search exactly "DeepSeek Harness snapshot search". Then reply exactly SEARCH_DONE and stop. {{clock}}
+- button "Copy":
+  - img
+- button "Branch into a new conversation":
+  - img
+- button "Context injection":
+  - img
+  - img
+  - text: Context injection
+- img
+- text: Search DeepSeek Harness snapshot search
+- list:
+  - listitem:
+    - link "Snapshot Search Result":
+      - /url: https://docs.example.test/search
+    - text: Snapshot search excerpt. 2026-07-31
+- paragraph: SEARCH_DONE
+- button "Copy":
+  - img
+- button "Branch into a new conversation":
+  - img
+- text: {{clock}}
+- textbox "Message the agent"
+- button "Commands":
+  - img
+- 'button "Access mode, current: Full access"': Full access
+- button "Select model, current DeepSeek-V4-Flash":
+  - text: DeepSeek-V4-Flash
+  - img
+- button "Send message" [disabled]
+- text: 1 turns · 2 steps Tool call {{duration}} Context 0% of 128K Cache hit 0% Input 22 tok · Output 7 tok
diff --git a/apps/web/tests/support.ts b/apps/web/tests/support.ts
index aded1aa406..d03915f851 100644
--- a/apps/web/tests/support.ts
+++ b/apps/web/tests/support.ts
@@ -9,11 +9,18 @@ export const DIST_INDEX = fileURLToPath(new URL('../dist/index.html', import.met
 
 export const REPO_ROOT = fileURLToPath(new URL('../../..', import.meta.url))
 
+/**
+ * Browser language a page must advertise to boot into the product's Chinese
+ * surface: with no stored preference the client derives its initial locale
+ * from the browser, and Playwright's default browser asks for English.
+ */
+export const ZH_BROWSER_LOCALE = 'zh-CN'
+
 /**
  * Open the standard browser-test page with English selected before client
  * boot. This keeps role locators and goldens deterministic across localized
- * component migrations; the settings locale scenario deliberately bypasses
- * this helper to cover the product's default Chinese state.
+ * component migrations; the scenarios asserting the Chinese surface bypass
+ * this helper and advertise {@link ZH_BROWSER_LOCALE} instead.
  * @param browser - Playwright browser owning the page.
  * @param height - Viewport height; width is fixed to the lane baseline.
  * @returns the initialized page.
diff --git a/apps/web/tests/web-search-round.e2e.ts b/apps/web/tests/web-search-round.e2e.ts
new file mode 100644
index 0000000000..804c7a70ca
--- /dev/null
+++ b/apps/web/tests/web-search-round.e2e.ts
@@ -0,0 +1,207 @@
+// Web e2e scenario for the shipped default search composition. A real browser
+// drives `web_search`; the model stream is replayed while the real DeepSeek
+// provider calls a deterministic local Anthropic-compatible endpoint through
+// the real credentials service.
+import { readFile } from 'node:fs/promises'
+import { createServer, type Server } from 'node:http'
+import type { AddressInfo } from 'node:net'
+import { fileURLToPath } from 'node:url'
+import type { Browser, Page } from 'playwright'
+import { chromium } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import type { SessionEvent } from '@deepseek-ai/dsh-session'
+import {
+  assertFixtureInventory, captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
+  launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
+} from './scaffold.ts'
+import { connectFreshWorkspace, newEnglishPage, saveFailureShot } from './support.ts'
+
+const SNAPSHOT_DIR = fileURLToPath(new URL('./snapshots/web-search-round', import.meta.url))
+const FIXTURE = fileURLToPath(new URL('./snapshots/web-search-round/session.jsonl', import.meta.url))
+const UI_EXPECTED = fileURLToPath(new URL('./snapshots/web-search-round/ui.expected.md', import.meta.url))
+const MODE = webSnapshotMode()
+const QUERY = 'DeepSeek Harness snapshot search'
+const PROMPT = `Use web_search to search exactly "${QUERY}". Then reply exactly SEARCH_DONE and stop.`
+const SEARCH_CREDENTIAL_REF = credentialRef('DSH_WEB_SEARCH_E2E_KEY')
+const SEARCH_CREDENTIAL = 'snapshot-search-key'
+const RESULT_URL = 'https://docs.example.test/search'
+
+interface CapturedSearchRequest {
+  path: string
+  apiKey: string | undefined
+  body: unknown
+}
+
+/** Start the deterministic DeepSeek Messages double used by the real provider. */
+async function startSearchServer(captured: CapturedSearchRequest[]): Promise<{ server: Server; baseURL: string }> {
+  const server = createServer((request, response) => {
+    let body = ''
+    request.setEncoding('utf8')
+    request.on('data', (chunk: string) => { body += chunk })
+    request.on('end', () => {
+      captured.push({
+        path: request.url ?? '',
+        apiKey: typeof request.headers['x-api-key'] === 'string' ? request.headers['x-api-key'] : undefined,
+        body: JSON.parse(body) as unknown,
+      })
+      response.writeHead(200, { 'content-type': 'application/json' })
+      response.end(JSON.stringify({
+        content: [
+          {
+            type: 'text',
+            text: 'Found one source.',
+            citations: [{
+              type: 'web_search_result_location',
+              url: RESULT_URL,
+              cited_text: 'Snapshot search excerpt.',
+            }],
+          },
+          {
+            type: 'web_search_tool_result',
+            content: [{
+              type: 'web_search_result',
+              url: RESULT_URL,
+              title: 'Snapshot Search Result',
+              page_age: '2026-07-31',
+            }],
+          },
+        ],
+      }))
+    })
+  })
+  await new Promise((resolve, reject) => {
+    server.once('error', reject)
+    server.listen(0, '127.0.0.1', () => {
+      server.off('error', reject)
+      resolve()
+    })
+  })
+  const address = server.address() as AddressInfo
+  return { server, baseURL: `http://127.0.0.1:${address.port}` }
+}
+
+describe('web e2e: shipped default web search', () => {
+  let scaffold: WebScaffold
+  let browser: Browser
+  let page: Page
+  let searchServer: Server | undefined
+  let searchBaseURL: string
+  let tripwire: ReturnType
+  const searchRequests: CapturedSearchRequest[] = []
+  const sessionEvents: SessionEvent[] = []
+
+  beforeAll(async () => {
+    const search = await startSearchServer(searchRequests)
+    searchServer = search.server
+    searchBaseURL = search.baseURL
+    scaffold = await launchWebScaffold({
+      deepSeekSearch: {
+        baseURL: search.baseURL,
+        apiKeyEnv: SEARCH_CREDENTIAL_REF,
+      },
+      ...(MODE === 'record' ? {} : { replayFixture: FIXTURE, paceMs: 15 }),
+    })
+    await scaffold.ctx.credentials.set(SEARCH_CREDENTIAL_REF, SEARCH_CREDENTIAL)
+    scaffold.ctx.on('session/event', (_session, event: SessionEvent) => { sessionEvents.push(event) })
+    browser = await chromium.launch()
+    page = await newEnglishPage(browser)
+    tripwire = watchConsole(page)
+    await page.goto(scaffold.baseUrl, { waitUntil: 'load' })
+    await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
+    await connectFreshWorkspace(page)
+  }, 120_000)
+
+  afterAll(async () => {
+    await browser?.close()
+    await scaffold?.close()
+    await new Promise((resolve, reject) => {
+      if (searchServer === undefined) {
+        resolve()
+        return
+      }
+      searchServer.close((error) => {
+        if (error === undefined) resolve()
+        else reject(error)
+      })
+    })
+  })
+
+  it('drives the recorded search to a settled turn (all modes)', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-search-drive'))
+    if (MODE !== 'record') {
+      expect(fixtureUserPrompts(await readFile(FIXTURE, 'utf8'))).toEqual([PROMPT])
+    }
+    const input = page.locator('textarea').first()
+    await input.waitFor({ timeout: 10_000 })
+    const settled = scaffold.whenTurnSettled()
+    await input.fill(PROMPT)
+    await input.press('Enter')
+    const sessionId = await settled
+    if (MODE === 'record') await recordFixture(scaffold, sessionId, FIXTURE)
+  }, 200_000)
+
+  it.skipIf(MODE === 'record')('uses the real provider and persists the structured result', () => {
+    expect(searchRequests).toHaveLength(1)
+    expect(searchRequests[0]).toMatchObject({
+      path: '/messages',
+      apiKey: SEARCH_CREDENTIAL,
+      body: {
+        messages: [{
+          role: 'user',
+          content: [{ type: 'text', text: `Perform a web search for the query: ${QUERY}` }],
+        }],
+        tools: [{ type: 'web_search_20250305', name: 'web_search' }],
+      },
+    })
+
+    const auxiliaryRequest = sessionEvents.find(
+      (event): event is Extract =>
+        event.type === 'web/deepseek-search-llm-request',
+    )
+    expect(auxiliaryRequest?.data).toEqual({
+      endpoint: `${searchBaseURL}/messages`,
+      apiVersion: '2023-06-01',
+      body: searchRequests[0]?.body,
+    })
+
+    const searchCall = sessionEvents.find(
+      (event): event is Extract =>
+        event.type === 'tool/call' && event.data.name === 'web_search',
+    )
+    if (searchCall === undefined) throw new Error('the replayed turn did not call web_search')
+    const searchResult = sessionEvents.find(
+      (event): event is Extract =>
+        event.type === 'tool/result' && event.data.message.source.callId === searchCall.data.callId,
+    )
+    if (searchResult === undefined) throw new Error('web_search produced no durable result')
+    const content = searchResult.data.message.content[0]
+    expect(content.isError).toBe(false)
+    expect(content.content.filter(block => block.type === 'text').map(block => block.text).join(''))
+      .toContain(`[Snapshot Search Result](${RESULT_URL})`)
+    expect(searchResult.data.meta).toMatchObject({
+      sources: [{
+        url: RESULT_URL,
+        title: 'Snapshot Search Result',
+        snippet: 'Snapshot search excerpt.',
+        publishedAt: '2026-07-31',
+      }],
+      truncated: false,
+    })
+  })
+
+  it.skipIf(MODE === 'record')('matches the settled search card aria golden', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-search-aria'))
+    await expect.poll(() => page.getByText('SEARCH_DONE', { exact: true }).count(), { timeout: 15_000 })
+      .toBeGreaterThanOrEqual(1)
+    await page.locator('[data-tool="web_search"]').waitFor({ timeout: 10_000 })
+    const snapshot = await captureStableAria(page, '[class*="centerCol"]', scaffold.workspaceCwd)
+    await compareOrRefreshGolden(UI_EXPECTED, snapshot, MODE)
+  })
+
+  it.skipIf(MODE === 'record')('stayed clean and kept the exact fixture inventory', async () => {
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+    await assertFixtureInventory(SNAPSHOT_DIR, ['session.jsonl', 'ui.expected.md'])
+  })
+})
diff --git a/apps/web/tsconfig.json b/apps/web/tsconfig.json
index 28720ba896..a4cd2d9121 100644
--- a/apps/web/tsconfig.json
+++ b/apps/web/tsconfig.json
@@ -42,9 +42,11 @@
     "tests/code-mode-round.e2e.ts",
     "tests/composer-draft-scroll.e2e.ts",
     "tests/cordis-tool-round.e2e.ts",
+    "tests/web-search-round.e2e.ts",
     "tests/message-actions.e2e.ts",
     "tests/queue-actions.e2e.ts",
     "tests/skill-invocation-policy.e2e.ts",
+    "tests/permission-policy-context.e2e.ts",
     "tests/access-confirmation.e2e.ts"
   ],
   "references": [
diff --git a/docs/architecture.i18n.yaml b/docs/architecture.i18n.yaml
index bd68a32efa..e305eb5f42 100644
--- a/docs/architecture.i18n.yaml
+++ b/docs/architecture.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/architecture.md
-architecture.md: 2ae3a072cfedcf13d06d88108eae5bcd25b377b1
-architecture.zh.md: 73d77227d32d4a3f084b789d03c0b1648fb3934e
+architecture.md: 75340b6fb3e4e109974bcb9d9ccabec004d853e1
+architecture.zh.md: 0955a40f3571fe9146c75a6b1094f945fcc5219c
diff --git a/docs/architecture.md b/docs/architecture.md
index 2ae3a072cf..75340b6fb3 100644
--- a/docs/architecture.md
+++ b/docs/architecture.md
@@ -16,7 +16,7 @@ Harnesses are [Cordis](cordis-primer.md) contexts; packages contribute services,
 |---|---|---|
 | — | [`dsh-scope`](../packages/core/scope/README.md) | scoped-context registrations and shared layer storage (library) |
 | `ctx.sessions` | `dsh-session` | in-memory event-sourced sessions |
-| `ctx.systemPrompt` | `dsh-system-prompt` | ordered prompt sections, tool schemas, and variables |
+| `ctx.systemPrompt` | `dsh-system-prompt` | ordered stable system sections, cache-safe dynamic contexts, tool schemas, and variables |
 | `ctx.tools` | `dsh-tools` | tool registry and [execution pipeline](tool-execution-pipeline.md) |
 | `ctx.agents` | `dsh-agent` | live agents, delegated creation, `agent/*` events, process-local initiator scope |
 | `ctx.agentLoop` | `dsh-agent-loop` | concrete `Agent` driver |
@@ -93,10 +93,11 @@ forever:
     STEP loop:
       agent/step
       drain injected context and steering (steering bypasses prompt-submit)
-      assemble system prompt and tool schemas
+      assemble system prompt and tools
+      materialize changed runtime context as sourced 'user/message'
       snapshot the derived messages (the reconstruction boundary)
       'step/start'
-      agent/request (config only) -> prepare adapter defaults/provenance under turn signal -> log request/header -> llm/stream (frozen, registration-bound)
+      agent/request (config only) -> prepare adapter defaults/provenance + context capacity under turn signal -> log request/header (+ request/context on route change) -> llm/stream (frozen, registration-bound)
       'assistant/chunk'
       'assistant/message'
       schedule tool calls by ctx.tools.executionMode:
@@ -117,7 +118,7 @@ idle inject:
   do not open a turn or run the model
 ```
 
-Each step assembles ordered prompt sections, tool schemas, and variables; unknown references fail the turn. `dsh-system-prompt` owns identity and persona; the loop supplies `provider`, `model`, and `cwd` ([prompt ownership](../.agents/notes/implemented/architecture/2026-07-05-prompt-variables-and-tool-guidance-ownership.md)).
+Each step assembles ordered stable system sections, cache-safe dynamic contexts, tool schemas, and variables; unknown references fail the turn. `dsh-system-prompt` owns identity and persona; the loop supplies `provider`, `model`, and `cwd` ([prompt ownership](../.agents/notes/implemented/architecture/2026-07-05-prompt-variables-and-tool-guidance-ownership.md)).
 
 Admission-time and active-turn `inject()` stage for the next step; post-tool `additionalContexts` settles after results. Steering shares that staging boundary and requests another step. Idle `inject()` appends immediately without changing turn numbers; persistence drains eagerly.
 
@@ -129,11 +130,11 @@ Adapter failures close their step before `agent/request-error` receives the exac
 
 Other failures use `agent/error`. Cancellation and disposal beat recovery. Before request-header commit, the turn signal cancels asynchronous model-capability preparation; undispatched tools get synthetic `tool/call`/`ABORTED_BEFORE_DISPATCH` pairs. Effective `cancel(cause)` emits its cause before queue clearing and abort; observers cannot veto; idle calls emit nothing. Durability records user or parent cancellation as `aborted`, teardown as `disposed`; teardown awaits quiescence. The cause affects reporting, not late result-context handling ([decision](../.agents/notes/implemented/architecture/2026-07-16-explicit-turn-cancellation.md)).
 
-Turn and step events are turn-enclosed. Idle `user/message` and standalone manual `compact/* { turn: null }` may sit between turns without consuming one; compaction markers are lock time points, so injection may interleave. Reload synthesizes interrupted turn ends; `session/end-seed` separates stale compaction orphans from current-process locks. After close, only `agent/error` reports failures. Each turn has one [TurnEndReason](core-data-structures/session.md#why-a-turn-ended-turnendreasonmap).
+Turn and step events are turn-enclosed. Idle `user/message` and standalone `compact/* { turn: null }` consume no turn; their lock-time markers may interleave with injection. Reload synthesizes interrupted turn ends; `session/end-seed` distinguishes stale compaction orphans from live locks. After close, only `agent/error` reports failures. Each turn has one [TurnEndReason](core-data-structures/session.md#why-a-turn-ended-turnendreasonmap).
 
 ### Agent Handles
 
-`ctx.agents` owns live agents and returns `AgentHandle { agent, dispose() }`. Plugins use full `send()` options or `followup()`, `steer()`, and `inject()` presets; [`reserveTurnAdmission()`](../packages/core/agent/README.md#agent-interface-typests) synchronously holds the idle boundary for standalone durable work without changing queued prompt identity. `cancel()` and `whenIdle()` control lifecycle. One awaited disposer coordinates teardown ownership.
+`ctx.agents` owns agents, returning `AgentHandle { agent, dispose() }`. Plugins use `send()` or `followup()`, `steer()`, and `inject()` presets; [`reserveTurnAdmission()`](../packages/core/agent/README.md#agent-interface-typests) synchronously reserves idle for durable work without changing queued prompt identity. `cancel()` and `whenIdle()` control lifecycle. Awaited disposal owns teardown.
 
 ### Agent Scope
 
@@ -145,11 +146,11 @@ Each agent owns scoped `agent.ctx`; shared storage overlays its tool, prompt, an
 
 The session log is authoritative. `deriveMessages()` projects model history; raw `assistant/chunk` events preserve replay and UI fidelity. Fork, resume, transcript rendering, telemetry, and persistence derive from this stream.
 
-**Model-visible ⟺ logged**: messages at `step/start` plus the folded `request/header` reconstruct every request; the header also marks adapter-materialized defaults so the next proposal can discard them and resolve the selected route without losing explicit conversation settings. Package-owned `dsh-agent-loop/invariant` can assert reconstructability through `ctx.invariants` ([reconstructability](../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)).
+**Model-visible ⟺ logged**: before `step/start`, the loop appends the full current runtime-context snapshot as a sourced `user/message`, then snapshots derived messages. Those messages and the folded `request/header` reconstruct each request. The header marks adapter defaults so later proposals discard them and re-resolve the route without losing explicit settings. `dsh-agent-loop/invariant` asserts this through `ctx.invariants` ([reconstructability](../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)).
 
 Durability is a plugin concern. Backends eagerly drain synchronous `session/event` notifications. `session/flush` barriers precede each request and top-level tool dispatch, then follow `turn/end` before another queued turn or idle observation. `SessionPersistence` stores `SessionEvent` directly and metadata in `SessionHeader`; JSONL defaults to checksummed Zstandard, while SQLite shares the contract ([decision](../.agents/notes/implemented/bug-fix/2026-07-21-semantic-session-checkpoints.md)).
 
-Log-only events may sit between turns. Owners append through `Session`, flushing only for durability. `session/title` relies on eager persistence and lifecycle drains; a manual compaction explicitly flushes its closed standalone bracket before releasing turn admission. Latest title wins with provenance; fallback and provider work never delays responses. Such records are fork boundaries, so forks inherit titles ([decision](../.agents/notes/implemented/feature/2026-07-21-log-backed-session-titles.md)).
+Between turns, owners append log-only events through `Session`, flushing only for durability. `session/title` needs eager persistence and lifecycle drains; manual compaction flushes its bracket before releasing admission. Title work never delays responses; latest wins with provenance. Title records are inherited fork boundaries ([decision](../.agents/notes/implemented/feature/2026-07-21-log-backed-session-titles.md)).
 
 ### Model Content
 
diff --git a/docs/architecture.zh.md b/docs/architecture.zh.md
index 73d77227d3..0955a40f35 100644
--- a/docs/architecture.zh.md
+++ b/docs/architecture.zh.md
@@ -16,7 +16,7 @@
 |---|---|---|
 | — | [`dsh-scope`](../packages/core/scope/README.md) | 作用域上下文注册项与共享层存储（库） |
 | `ctx.sessions` | `dsh-session` | 内存中的事件溯源会话 |
-| `ctx.systemPrompt` | `dsh-system-prompt` | 有序提示词片段、工具 schema 和变量 |
+| `ctx.systemPrompt` | `dsh-system-prompt` | 有序的稳定系统提示词片段、缓存安全的动态上下文、工具 schema 和变量 |
 | `ctx.tools` | `dsh-tools` | 工具注册表和[执行流水线](tool-execution-pipeline.md) |
 | `ctx.agents` | `dsh-agent` | 活跃 agent、委托创建、`agent/*` 事件、进程内发起方作用域 |
 | `ctx.agentLoop` | `dsh-agent-loop` | 实体 `Agent` 驱动器 |
@@ -93,10 +93,11 @@ forever:
     STEP loop:
       agent/step
       drain injected context and steering (steering bypasses prompt-submit)
-      assemble system prompt and tool schemas
+      assemble system prompt and tools
+      materialize changed runtime context as sourced 'user/message'
       snapshot the derived messages (the reconstruction boundary)
       'step/start'
-      agent/request (config only) -> prepare adapter defaults/provenance under turn signal -> log request/header -> llm/stream (frozen, registration-bound)
+      agent/request (config only) -> prepare adapter defaults/provenance + context capacity under turn signal -> log request/header (+ request/context on route change) -> llm/stream (frozen, registration-bound)
       'assistant/chunk'
       'assistant/message'
       schedule tool calls by ctx.tools.executionMode:
@@ -117,7 +118,7 @@ idle inject:
   do not open a turn or run the model
 ```
 
-每个步骤都会组装有序提示词片段、工具 schema 和变量；未知引用会使该轮次失败。`dsh-system-prompt` 负责身份和角色设定；循环提供 `provider`、`model` 和 `cwd`（[提示词归属](../.agents/notes/implemented/architecture/2026-07-05-prompt-variables-and-tool-guidance-ownership.md)）。
+每个步骤都会组装有序的稳定系统提示词片段、缓存安全的动态上下文、工具 schema 和变量；未知引用会使该轮次失败。`dsh-system-prompt` 负责身份和角色设定；循环提供 `provider`、`model` 和 `cwd`（[提示词归属](../.agents/notes/implemented/architecture/2026-07-05-prompt-variables-and-tool-guidance-ownership.md)）。
 
 接纳期间和活跃轮次内的 `inject()` 会为下一步骤暂存；工具执行后的 `additionalContexts` 会在结果记录完毕后落定。steering 与其共用这一暂存边界，并请求再执行一个步骤。空闲状态下的 `inject()` 会立即追加，且不改变轮次编号；持久化层会尽快排空。
 
@@ -129,11 +130,11 @@ idle inject:
 
 其他故障使用 `agent/error`。取消和资源释放优先于恢复。在提交请求头之前，轮次信号会取消异步模型能力准备；尚未分派的工具会得到合成的 `tool/call`/`ABORTED_BEFORE_DISPATCH` 对。实际生效的 `cancel(cause)` 在清空队列和中止前发出原因；观察方不能否决；空闲调用不发事件。持久化层将用户或父级取消记录为 `aborted`，拆卸记录为 `disposed`；拆卸会等待完全停稳。原因只影响报告方式，不影响延迟完成的结果上下文处理（[决策](../.agents/notes/implemented/architecture/2026-07-16-explicit-turn-cancellation.md)）。
 
-轮次和步骤事件均位于轮次边界内。空闲 `user/message` 与独立的手动 `compact/* { turn: null }` 可以位于轮次之间且不占用轮次；压缩标记是锁的时间点，因此注入可以交错。重新加载会为中断的轮次合成结束事件；`session/end-seed` 区分陈旧的未匹配压缩标记与当前进程的锁。关闭后仅由 `agent/error` 报告故障。每个轮次有一个 [TurnEndReason](core-data-structures/session.md#why-a-turn-ended-turnendreasonmap)。
+轮次和步骤事件均位于轮次边界内。空闲 `user/message` 与独立的 `compact/* { turn: null }` 不占用轮次；其锁定时刻标记可以与注入交错。重新加载会为中断的轮次合成结束事件；`session/end-seed` 区分陈旧的压缩遗留项与活跃锁。关闭后仅由 `agent/error` 报告故障。每个轮次有一个 [TurnEndReason](core-data-structures/session.md#why-a-turn-ended-turnendreasonmap)。
 
 ### Agent 句柄
 
-`ctx.agents` 拥有活跃 agent，并返回 `AgentHandle { agent, dispose() }`。插件使用全部 `send()` 选项，或 `followup()`、`steer()` 和 `inject()` 预设；[`reserveTurnAdmission()`](../packages/core/agent/README.md#agent-interface-typests) 为独立持久工作同步保留空闲边界，同时不改变排队提示词身份。`cancel()` 与 `whenIdle()` 控制生命周期。一个需等待完成的 disposer 协调拆卸归属。
+`ctx.agents` 拥有 agent，返回 `AgentHandle { agent, dispose() }`。插件使用 `send()`，或使用 `followup()`、`steer()` 和 `inject()` 预设；[`reserveTurnAdmission()`](../packages/core/agent/README.md#agent-interface-typests) 为持久工作同步预留空闲状态，同时不改变排队提示词身份。`cancel()` 与 `whenIdle()` 控制生命周期。需等待完成的资源释放负责拆卸。
 
 ### Agent 作用域
 
@@ -145,11 +146,11 @@ idle inject:
 
 会话日志是权威依据。`deriveMessages()` 投影出模型历史；原始 `assistant/chunk` 事件保证回放和 UI 保真。fork、恢复、transcript（文本记录）渲染、遥测和持久化均派生自该事件流。
 
-**模型可见 ⟺ 已记录**：`step/start` 时的消息与折叠后的 `request/header` 可以重建每个请求；该 header 还会标记适配器填入的默认值，使下一次提议可以丢弃这些值并解析所选路由，同时不丢失显式对话设置。该包的 `dsh-agent-loop/invariant` 可通过 `ctx.invariants` 断言可重建性（[可重建性](../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)）。
+**模型可见 ⟺ 已记录**：在 `step/start` 之前，循环会将完整的当前运行时上下文快照作为一条带来源的 `user/message` 追加，随后对派生消息制作快照。这些消息与折叠后的 `request/header` 可以重建每个请求。该 header 会标记适配器默认值，使后续提议丢弃这些值并重新解析路由，同时不丢失显式设置。`dsh-agent-loop/invariant` 通过 `ctx.invariants` 断言这一点（[可重建性](../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)）。
 
 持久性由插件负责。后端会尽快排空同步的 `session/event` 通知。`session/flush` 屏障位于每次请求与顶层工具分发之前，并在 `turn/end` 之后、处理另一个已排队轮次或观察到空闲状态之前执行。`SessionPersistence` 直接存储 `SessionEvent`，并将元数据存入 `SessionHeader`；JSONL 默认采用带校验和的 Zstandard，SQLite 遵循同一契约（[决策](../.agents/notes/implemented/bug-fix/2026-07-21-semantic-session-checkpoints.md)）。
 
-纯日志事件可以位于轮次之间。事件所有方通过 `Session` 追加，仅为持久性而刷写。`session/title` 依赖尽快持久化与生命周期排空；手动压缩会在释放轮次接纳预留前，显式 flush 已闭合的独立标记对。最新标题按后写覆盖并携带来源信息；回退与提供方工作绝不会延迟响应。这类记录可作为 fork 边界，因此 fork 会继承标题（[决策](../.agents/notes/implemented/feature/2026-07-21-log-backed-session-titles.md)）。
+在轮次之间，事件所有方通过 `Session` 追加纯日志事件，仅为持久性而刷写。`session/title` 需要尽快持久化与生命周期排空；手动压缩会在释放轮次接纳预留前 flush 其标记对。标题工作绝不延迟响应；最新标题按后写覆盖并携带来源信息。标题记录是可继承的 fork 边界（[决策](../.agents/notes/implemented/feature/2026-07-21-log-backed-session-titles.md)）。
 
 ### 模型内容
 
diff --git a/docs/config-catalog.md b/docs/config-catalog.md
index 763770a834..c862dc7f93 100644
--- a/docs/config-catalog.md
+++ b/docs/config-catalog.md
@@ -227,7 +227,7 @@ Requires: `subprocess` · `sandbox` · `sandboxPolicy`
  * Plugin config: the local executor's knobs, verbatim. The sandbox policy —
  * the default mode and fallback `workspace-write` root — is NOT here: it lives
  * on `ctx.sandboxPolicy` (`@deepseek-ai/dsh-sandbox-policy`), which resolves
- * each calling session's mode and cwd for both enforcing families. The runner
+ * each calling session's mode and cwd for every enforcing capability. The runner
  * choice is likewise the `ctx.sandbox` provider's config, not this executor's.
  */
 export type Config = LocalConfig
@@ -446,7 +446,7 @@ Requires: `sandboxPolicy`
  * Plugin config: the local backend's knobs, verbatim (only `cwd`, the resolve
  * base for relative paths). The sandbox default (mode + `workspace-write`
  * fallback root) is NOT here — `ctx.sandboxPolicy` resolves each calling
- * session for both enforcing families.
+ * session for every enforcing capability.
  */
 export type Config = LocalConfig
 ```
@@ -1046,7 +1046,7 @@ export interface Config {
 
 Depends on: [`SandboxMode`](core-data-structures/sandbox.md)
 
-Source: [`packages/sandbox/sandbox-policy/src/index.ts:44`](../packages/sandbox/sandbox-policy/src/index.ts)
+Source: [`packages/sandbox/sandbox-policy/src/index.ts:67`](../packages/sandbox/sandbox-policy/src/index.ts)
 
 ## `@deepseek-ai/dsh-session-persistence-jsonl`
 
@@ -1599,7 +1599,7 @@ export interface Config {
 }
 ```
 
-Source: [`packages/core/system-prompt/src/index.ts:147`](../packages/core/system-prompt/src/index.ts)
+Source: [`packages/core/system-prompt/src/index.ts:171`](../packages/core/system-prompt/src/index.ts)
 
 ## `@deepseek-ai/dsh-time-context`
 
@@ -1638,7 +1638,7 @@ Source: [`packages/context/tmux-context/src/index.ts:34`](../packages/context/tm
 export type TokenMeterConfig = Record
 ```
 
-Source: [`packages/llm/token-meter/src/types.ts:10`](../packages/llm/token-meter/src/types.ts)
+Source: [`packages/llm/token-meter/src/types.ts:12`](../packages/llm/token-meter/src/types.ts)
 
 ## `@deepseek-ai/dsh-tool-bash`
 
@@ -2106,13 +2106,12 @@ export interface Config {
  *   (exactly today's behavior).
  * - `'never'` — never prompt anyone: every ask resolves `'rejected'`
  *   deterministically. The strict headless stance (CI, unattended runs) and
- *   the only policy value stated in the system prompt — unlike `'ask'`, its
- *   outcome is knowable without asking, so stating it cannot overclaim.
+ *   the policy whose outcome is knowable without asking.
  */
 export type ApprovalPolicy = 'ask' | 'never'
 ```
 
-Source: [`packages/ui/user-approval/src/index.ts:202`](../packages/ui/user-approval/src/index.ts)
+Source: [`packages/ui/user-approval/src/index.ts:178`](../packages/ui/user-approval/src/index.ts)
 
 ## `@deepseek-ai/dsh-web`
 
@@ -2164,8 +2163,10 @@ Requires: `web`
 ```ts config-catalog
 /** Plugin config (all optional — `apply` fills env-var and constant defaults). */
 export interface Config {
-  /** DeepSeek API key. Falls back to `$DEEPSEEK_API_KEY`. Empty → unavailable. */
+  /** Literal DeepSeek API key; prefer {@link apiKeyEnv} so no secret enters configuration files. */
   apiKey?: string
+  /** Credential reference resolved for each search; defaults to `DEEPSEEK_API_KEY`. */
+  apiKeyEnv?: string
   /** Anthropic-compatible endpoint base; `/messages` is appended. */
   baseURL?: string
   /** Anthropic-format model name. Defaults to `deepseek-v4-flash`. */
@@ -2179,7 +2180,7 @@ export interface Config {
 }
 ```
 
-Source: [`packages/web/web-search-deepseek/src/index.ts:38`](../packages/web/web-search-deepseek/src/index.ts)
+Source: [`packages/web/web-search-deepseek/src/index.ts:43`](../packages/web/web-search-deepseek/src/index.ts)
 
 ## `@deepseek-ai/dsh-web-search-exa`
 
diff --git a/docs/cordis-catalog/events.md b/docs/cordis-catalog/events.md
index f7340a61d9..a7ff21e2f4 100644
--- a/docs/cordis-catalog/events.md
+++ b/docs/cordis-catalog/events.md
@@ -588,7 +588,7 @@ The provider topology changed: an adapter registered or unregistered routes, or
 'llm/adapters-updated'(): void
 ```
 
-Source: [`packages/llm/llm/src/index.ts:70`](../../packages/llm/llm/src/index.ts)
+Source: [`packages/llm/llm/src/index.ts:71`](../../packages/llm/llm/src/index.ts)
 
 ### `llm/stream` — waterfall
 
@@ -612,7 +612,7 @@ Waterfall around every streaming model call (retry, replay, routing). Bound to t
 
 Types: [GenerateOptions](../core-data-structures/core.md) · [LlmService](../core-data-structures/llm-streaming.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
 
-Source: [`packages/llm/llm/src/index.ts:59`](../../packages/llm/llm/src/index.ts)
+Source: [`packages/llm/llm/src/index.ts:60`](../../packages/llm/llm/src/index.ts)
 
 ## `session/*`
 
@@ -855,11 +855,11 @@ Source: [`packages/subagent/subagent/src/index.ts:131`](../../packages/subagent/
 
 ### `system-prompt/assemble` — waterfall
 
-Expert waterfall over the assembled sections, tools, and variables. Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): scoped listeners receive only that scope's assemblies. The returned value is authoritative. A supplied signal controls only this explicit assembly request and must not be retained to control later turns.
+Expert waterfall over the assembled sections, contexts, tools, and variables. Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): scoped listeners receive only that scope's assemblies. The returned value is authoritative. A supplied signal controls only this explicit assembly request and must not be retained to control later turns.
 
 ```ts cordis-catalog
 /**
- * Expert waterfall over the assembled sections, tools, and variables.
+ * Expert waterfall over the assembled sections, contexts, tools, and variables.
  * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): scoped listeners
  * receive only that scope's assemblies. The returned value is authoritative.
  * A supplied signal controls only this explicit assembly request and must not
diff --git a/docs/cordis-catalog/services.md b/docs/cordis-catalog/services.md
index 78e2d2bdab..f2c0b9f07e 100644
--- a/docs/cordis-catalog/services.md
+++ b/docs/cordis-catalog/services.md
@@ -220,7 +220,7 @@ Source: [`packages/core/agent/src/index.ts:216`](../../packages/core/agent/src/i
 
 ## `ctx.approval` — `ApprovalService`
 
-Approval service that applies session policy before answerers and logs every ask/outcome pair to the requesting session. It exposes deterministic policy changes to the model through prompt and pre-step notices.
+Approval service that applies session policy before answerers and logs every ask/outcome pair to the requesting session. It exposes deterministic policy changes to the model through the cache-safe runtime-context snapshot.
 
 ```ts cordis-catalog
 /**
@@ -253,7 +253,7 @@ overrideOf(session: Session): ApprovalPolicy | undefined
 
 Types: [ApprovalOutcome](../core-data-structures/approval.md) · [ApprovalPolicy](../core-data-structures/approval.md) · [ApprovalRequest](../core-data-structures/approval.md) · [Session](../core-data-structures/session.md)
 
-Source: [`packages/ui/user-approval/src/index.ts:217`](../../packages/ui/user-approval/src/index.ts)
+Source: [`packages/ui/user-approval/src/index.ts:193`](../../packages/ui/user-approval/src/index.ts)
 
 ## `ctx.bash` — `BashExecutor` (abstract seam)
 
@@ -902,7 +902,7 @@ stream(options: GenerateOptions): AsyncIterable
 
 Types: [AdapterRegistrationHandle](../core-data-structures/core.md) · [GenerateOptions](../core-data-structures/core.md) · [LlmAdapter](../core-data-structures/llm-streaming.md) · [LlmCallConfig](../core-data-structures/core.md) · [LlmConfigurableProvider](../core-data-structures/core.md) · [LlmModelInfo](../core-data-structures/core.md) · [LlmProviderInfo](../core-data-structures/core.md) · [LlmResolvedModelInfo](../core-data-structures/core.md) · [PreparedLlmCall](../core-data-structures/llm-streaming.md) · [ResolvedRetryPolicy](../core-data-structures/llm-streaming.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
 
-Source: [`packages/llm/llm/src/index.ts:229`](../../packages/llm/llm/src/index.ts)
+Source: [`packages/llm/llm/src/index.ts:232`](../../packages/llm/llm/src/index.ts)
 
 ## `ctx.permission` — `PermissionService`
 
@@ -1099,7 +1099,7 @@ Source: [`packages/sandbox/sandbox/src/index.ts:131`](../../packages/sandbox/san
 
 ## `ctx.sandboxPolicy` — `SandboxPolicyService`
 
-The sandbox-policy service (`ctx.sandboxPolicy`). Owns the deployment default mode and fallback workspace root. Tool layers call resolve for each execution so a session's mode log and immutable cwd travel together to every enforcing capability.
+The sandbox-policy service (`ctx.sandboxPolicy`). Owns the deployment default mode, fallback workspace root, and current request-time policy section. Tool layers call resolve for each execution so a session's mode log and immutable cwd travel together to every enforcing capability.
 
 ```ts cordis-catalog
 /**
@@ -1123,7 +1123,7 @@ overrideOf(session: Session): SandboxMode | undefined
 
 Types: [SandboxExecutionPolicy](../core-data-structures/sandbox.md) · [SandboxMode](../core-data-structures/sandbox.md) · [SandboxPolicyRequest](../core-data-structures/sandbox.md) · [Session](../core-data-structures/session.md)
 
-Source: [`packages/sandbox/sandbox-policy/src/index.ts:68`](../../packages/sandbox/sandbox-policy/src/index.ts)
+Source: [`packages/sandbox/sandbox-policy/src/index.ts:91`](../../packages/sandbox/sandbox-policy/src/index.ts)
 
 ## `ctx.sessionPersistence` — `SessionPersistence` (abstract seam)
 
@@ -1672,7 +1672,7 @@ fork(source: SessionForkSource, boundary?: number, childSessionId?: SessionId):
 
 Types: [CreateSessionOptions](../core-data-structures/persistence.md) · [Session](../core-data-structures/session.md) · [SessionId](../core-data-structures/core.md)
 
-Source: [`packages/core/session/src/index.ts:741`](../../packages/core/session/src/index.ts)
+Source: [`packages/core/session/src/index.ts:765`](../../packages/core/session/src/index.ts)
 
 ## `ctx.sessionTitle` — `SessionTitleService`
 
@@ -2029,6 +2029,16 @@ Registry service for the prompt inputs assembled before each model step.
  */
 section(section: PromptSection): () => void
 
+/**
+ * Register ordered cache-safe dynamic context in the calling context's scope.
+ * A scoped context shadows a global context with the same name; duplicates
+ * within one layer and non-finite orders throw. Registration and disposal
+ * emit `system-prompt/change`.
+ * @param context - the context contribution to register.
+ * @returns the exact Cordis effect disposer.
+ */
+context(context: PromptContext): () => void
+
 /**
  * Register a tool-schema provider in the calling context's scope. Global and
  * matching scoped providers both contribute; returning the reserved
@@ -2058,9 +2068,9 @@ variable(name: string, provider: (context: AssembleContext) => string | undefine
 async assemble(context: AssembleContext = {}): Promise
 ```
 
-Types: [AssembleContext](../core-data-structures/system-prompt.md) · [PromptSection](../core-data-structures/system-prompt.md) · [ToolProviderResult](../core-data-structures/system-prompt.md)
+Types: [AssembleContext](../core-data-structures/system-prompt.md) · [PromptContext](../core-data-structures/system-prompt.md) · [PromptSection](../core-data-structures/system-prompt.md) · [ToolProviderResult](../core-data-structures/system-prompt.md)
 
-Source: [`packages/core/system-prompt/src/index.ts:248`](../../packages/core/system-prompt/src/index.ts)
+Source: [`packages/core/system-prompt/src/index.ts:298`](../../packages/core/system-prompt/src/index.ts)
 
 ## `ctx.tasks` — `TaskService` (abstract seam)
 
@@ -2213,7 +2223,7 @@ estimateMessage(message: Message): number
 
 Types: [EpochHeader](../core-data-structures/session.md) · [Message](../core-data-structures/core.md) · [Session](../core-data-structures/session.md) · [TokenMeasurement](../core-data-structures/token-meter.md)
 
-Source: [`packages/llm/token-meter/src/index.ts:82`](../../packages/llm/token-meter/src/index.ts)
+Source: [`packages/llm/token-meter/src/index.ts:85`](../../packages/llm/token-meter/src/index.ts)
 
 ## `ctx.toolResultPrune` — `ToolResultPruneService`
 
diff --git a/docs/cordis-paper.pdf b/docs/cordis-paper.pdf
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+<<
+  /Size 5278
+  /Root 5277 0 R
+  /Info 5275 0 R
+  /ID [(HHwsV4w2OKoHWq5hDV/GeA==) (8/8Hb0n3/ti5Ewx/bKL9Ww==)]
+>>
+startxref
+1135503
+%%EOF
\ No newline at end of file
diff --git a/docs/core-data-structures/approval.i18n.yaml b/docs/core-data-structures/approval.i18n.yaml
index 7bcc6e692d..4d9cc05ac0 100644
--- a/docs/core-data-structures/approval.i18n.yaml
+++ b/docs/core-data-structures/approval.i18n.yaml
@@ -1,6 +1,6 @@
 # Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
-#   pnpm run verify-translation-pairing --write
-approval.md: 0de13eb1504b5ecc4ac0eafefefa2c87562c89b4
-approval.zh.md: b7ba10449fccfdb0dd5b52374e14038e3ec76ff8
+#   pnpm run verify-translation-pairing --write docs/core-data-structures/approval.md
+approval.md: f1889b25e2bbbcb157b0bced070b1f157a867504
+approval.zh.md: c460ec2cb847a9e9a3e772987830b58e93fc3715
diff --git a/docs/core-data-structures/approval.md b/docs/core-data-structures/approval.md
index 0de13eb150..f1889b25e2 100644
--- a/docs/core-data-structures/approval.md
+++ b/docs/core-data-structures/approval.md
@@ -42,13 +42,12 @@ type ApprovalOutcome = 'allowed-once' | 'rejected' | 'cancelled' | 'unavailable'
  *   (exactly today's behavior).
  * - `'never'` — never prompt anyone: every ask resolves `'rejected'`
  *   deterministically. The strict headless stance (CI, unattended runs) and
- *   the only policy value stated in the system prompt — unlike `'ask'`, its
- *   outcome is knowable without asking, so stating it cannot overclaim.
+ *   the policy whose outcome is knowable without asking.
  */
 type ApprovalPolicy = 'ask' | 'never'
 ```
 
-The prompt section states the deterministic `never` behavior and records either policy with a source-owned marker. The pre-step narrator reads that marker from the logged request header after restart; it does not infer state from deployment persona prose.
+Both policies contribute their complete current meaning to the cache-safe runtime-context snapshot. The sourced `user/message` is the durable model-visible input; changing approval state appends a new full snapshot after retained history without rewriting the request header's system prompt.
 
 ## Approval request
 
@@ -87,4 +86,4 @@ interface ApprovalRequest {
 
 `ctx.approval.request(req)` requires the requesting session to be inside an open turn. It appends `approval/asked`, obtains one outcome, appends the matching `approval/decided`, and resolves with that outcome. The `never` policy is enforced inside the service before waterfall dispatch, so even an answerer registered later with `prepend` cannot bypass it. Answerers return an outcome when they own the request or call `next()` to delegate; the first answer occupies the single decision slot.
 
-The audit events are log-only and do not enter the model transcript. Model-visible behavior is the caller's derived tool result, while the request header records the prompt policy that the model actually saw. Service disposal removes its prompt section and pre-step narrator together; answerer listeners are independently effect-bound to their owning plugins.
+The audit events are log-only and do not enter the model transcript. Model-visible behavior is the caller's derived tool result plus the current runtime-context snapshot. Service disposal removes its context contribution; answerer listeners are independently effect-bound to their owning plugins.
diff --git a/docs/core-data-structures/approval.zh.md b/docs/core-data-structures/approval.zh.md
index b7ba10449f..c460ec2cb8 100644
--- a/docs/core-data-structures/approval.zh.md
+++ b/docs/core-data-structures/approval.zh.md
@@ -42,13 +42,12 @@ type ApprovalOutcome = 'allowed-once' | 'rejected' | 'cancelled' | 'unavailable'
  *   (exactly today's behavior).
  * - `'never'` — never prompt anyone: every ask resolves `'rejected'`
  *   deterministically. The strict headless stance (CI, unattended runs) and
- *   the only policy value stated in the system prompt — unlike `'ask'`, its
- *   outcome is knowable without asking, so stating it cannot overclaim.
+ *   the policy whose outcome is knowable without asking.
  */
 type ApprovalPolicy = 'ask' | 'never'
 ```
 
-提示词段落会声明 `never` 的确定性行为，并以服务自有的标记记录当前策略。重启后，步骤前叙述器从已记录的请求头中读取该标记，而非从部署 persona 行文中推断状态。
+两种策略都会将各自完整的当前含义贡献给缓存安全的运行时上下文快照。带来源的 `user/message` 是持久化且模型可见的输入；批准状态变化时，会在保留的历史后追加一份新的完整快照，而不改写请求头中的系统提示词。
 
 ## 审批请求
 
@@ -87,4 +86,4 @@ interface ApprovalRequest {
 
 `ctx.approval.request(req)` 要求发起请求的会话处于一个打开的轮次内。它追加 `approval/asked`，获取一个结果，追加对应的 `approval/decided`，然后以该结果 resolve。`never` 策略在服务内部、waterfall 分发之前强制执行，因此即使后来以 `prepend` 注册的应答者也无法绕过它。应答者在拥有该请求时返回结果，否则调用 `next()` 委托；第一个应答占据唯一的决策槽位。
 
-审计事件仅写入日志，不进入模型 transcript（文本记录）。模型可见的行为是调用方派生的工具结果，而请求头记录的是模型实际看到的提示词策略。服务 dispose（资源释放）时会一并移除其提示词段落和步骤前叙述器；应答者监听器独立地通过 effect 绑定到其所属插件。
+审计事件仅写入日志，不进入模型 transcript（文本记录）。模型可见的行为是调用方派生的工具结果与当前运行时上下文快照。服务 dispose（资源释放）时会移除其上下文贡献；应答者监听器独立地通过 effect 绑定到其所属插件。
diff --git a/docs/core-data-structures/llm-streaming.i18n.yaml b/docs/core-data-structures/llm-streaming.i18n.yaml
index 7e1ba8b7bb..24f16f9781 100644
--- a/docs/core-data-structures/llm-streaming.i18n.yaml
+++ b/docs/core-data-structures/llm-streaming.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/core-data-structures/llm-streaming.md
-llm-streaming.md: e7500a7985ea1916e206c41e05855701b48fcf00
-llm-streaming.zh.md: 2b61815f2730afdfb93bc06b8ee8925d2f4cac25
+llm-streaming.md: 28f775f81049d3aa0198e75fbb6c4544302e772d
+llm-streaming.zh.md: 76282018f0cfa119199e221985bd09eaac69c839
diff --git a/docs/core-data-structures/llm-streaming.md b/docs/core-data-structures/llm-streaming.md
index e7500a7985..28f775f810 100644
--- a/docs/core-data-structures/llm-streaming.md
+++ b/docs/core-data-structures/llm-streaming.md
@@ -162,13 +162,15 @@ declare class BlockAssembler {
 
 ## The seam
 
-`LlmAdapter` is the provider seam: subclass, implement `stream()`, and register one adapter instance with `ctx.llm.registerAdapter(providers, adapter)`. `GenerateOptions.provider` selects the registered adapter; `GenerateOptions.model` is passed to that adapter and need not be registered at lifecycle start. Duplicate provider routes fail atomically. Optional `providerRetryPolicy()` is captured per route with normal defaults, while `providerInfo()` and asynchronous `listModels()` feed `LlmService.listProviders()` / `listModels()` with detached selector metadata. That catalog is advisory rather than a request whitelist: the adapter remains authoritative and may accept unlisted model ids. One asynchronous `resolveModel()` query returns exact model identity plus optional correctness-sensitive context capacity, an adapter-configured `defaultMaxTokens`, and ordered model-owned reasoning ids with an optional deployment default; absent fields mean unavailable metadata or provider-owned behavior, not invalid catalog membership. The resolver receives optional cancellation and must settle promptly after abort. `LlmService.resolveModelInfo()` validates and detaches the aggregate. At the final adapter boundary, `resolveCallConfig()` materializes the output default only when `maxTokens` is absent and validates and materializes reasoning, so direct calls cannot bypass either configured behavior; direct dispatch captures one registration before awaiting that resolution. The agent loop instead uses `prepareCall()` to keep the same registration across model resolution, durable header logging, and dispatch. Adapter lookup happens at the terminal continuation of the `llm/stream` waterfall, so a listener may short-circuit the call or route a mutable one-shot request before lookup. The `block-start` / `block-end` `index` correlation and the assembler together mean an adapter only has to emit well-formed chunks — block reassembly is not each adapter's problem. The consumer surface (`ctx.llm.stream()`) and the `llm/stream` waterfall are described in [architecture.md § Content blocks and streaming](../architecture.md#content-blocks-and-streaming-dsh-llm).
+`LlmAdapter` is the provider seam: subclass, implement `stream()`, and register one adapter instance with `ctx.llm.registerAdapter(providers, adapter)`. `GenerateOptions.provider` selects the registered adapter; `GenerateOptions.model` is passed to that adapter and need not be registered at lifecycle start. Duplicate provider routes fail atomically. Optional `providerRetryPolicy()` is captured per route with normal defaults, while `providerInfo()` and asynchronous `listModels()` feed `LlmService.listProviders()` / `listModels()` with detached selector metadata. That catalog is advisory rather than a request whitelist: the adapter remains authoritative and may accept unlisted model ids. One asynchronous `resolveModel()` query returns exact model identity plus optional correctness-sensitive context capacity, an adapter-configured `defaultMaxTokens`, and ordered model-owned reasoning ids with an optional deployment default; absent fields mean unavailable metadata or provider-owned behavior, not invalid catalog membership. The resolver receives optional cancellation and must settle promptly after abort. `LlmService.resolveModelInfo()` validates and detaches the aggregate. At the final adapter boundary, `resolveCallConfig()` materializes the output default only when `maxTokens` is absent and validates and materializes reasoning, so direct calls cannot bypass either configured behavior; direct dispatch captures one registration before awaiting that resolution. The agent loop instead uses `prepareCall()` to keep the same registration across model resolution, durable header logging, and dispatch, retain detached context metadata from that exact lookup, and report which config fields the adapter defaulted. Adapter lookup happens at the terminal continuation of the `llm/stream` waterfall, so a listener may short-circuit the call or route a mutable one-shot request before lookup. AgentLoop observes a request attempt once the outer waterfall returns a stream handle; that limited boundary does not prove a lazy terminal adapter was constructed or began provider I/O. The `block-start` / `block-end` `index` correlation and the assembler together mean an adapter only has to emit well-formed chunks — block reassembly is not each adapter's problem. The consumer surface (`ctx.llm.stream()`) and the `llm/stream` waterfall are described in [architecture.md § Content blocks and streaming](../architecture.md#content-blocks-and-streaming-dsh-llm).
 
 ```ts type-equiv
 /** One model call whose config and adapter registration were resolved together. */
 interface PreparedLlmCall {
   /** Detached, deep-frozen config with any adapter-owned default materialized. */
   readonly config: LlmCallConfig
+  /** Detached context metadata resolved with the registration-bound call. */
+  readonly context?: LlmModelContext
   /** Config fields materialized by the captured adapter rather than proposed by the caller. */
   readonly adapterDefaults: LlmCallConfigAdapterDefaults
   /**
diff --git a/docs/core-data-structures/llm-streaming.zh.md b/docs/core-data-structures/llm-streaming.zh.md
index 2b61815f27..76282018f0 100644
--- a/docs/core-data-structures/llm-streaming.zh.md
+++ b/docs/core-data-structures/llm-streaming.zh.md
@@ -162,13 +162,15 @@ declare class BlockAssembler {
 
 ## seam
 
-`LlmAdapter` 是提供方 seam：创建子类、实现 `stream()`，再用 `ctx.llm.registerAdapter(providers, adapter)` 注册一个适配器实例。`GenerateOptions.provider` 选择已注册适配器；`GenerateOptions.model` 会传给该适配器，无需在生命周期启动时注册。重复提供方路由会原子失败。可选的 `providerRetryPolicy()` 会按路由捕获并填入 normal 默认值，`providerInfo()` 与异步 `listModels()` 方法则为 `LlmService.listProviders()` / `listModels()` 提供分离的 selector 元数据。该目录仅供参考，不是请求白名单：适配器仍是权威，并可接受未列出的模型 id。单次异步 `resolveModel()` 查询返回确切模型身份，以及可选的对正确性敏感的上下文容量、适配器配置的 `defaultMaxTokens`、由模型持有的有序推理强度 ID 和部署默认值；字段缺失表示元数据不可用或保留提供方持有的行为，而不表示目录成员关系无效。解析器会接收可选的取消信号，并且必须在信号中止后迅速完成结算。`LlmService.resolveModelInfo()` 会校验聚合结果并返回分离值。在最终适配器边界，`resolveCallConfig()` 仅在 `maxTokens` 缺失时填入输出默认值，并校验和填入推理强度，因此直接调用也无法绕过任何一项已配置行为；直接分派会在等待解析前捕获一项适配器注册。agent loop 则使用 `prepareCall()`，使模型解析、请求头持久记录和分派全程使用同一项注册。适配器查找发生在 `llm/stream` waterfall（瀑布式事件）的终端 continuation，因此 listener 可以在查找前短路调用，或路由一个可变的一次性请求。`block-start` / `block-end` 的 `index` 关联与 assembler 共同意味着适配器只需 emit 格式正确的分片——块重组不是每个适配器各自的问题。消费方 surface（`ctx.llm.stream()`）与 `llm/stream` waterfall 见 [architecture.md § 内容块与流式传输](../architecture.md#content-blocks-and-streaming-dsh-llm)。
+`LlmAdapter` 是提供方 seam：创建子类、实现 `stream()`，再用 `ctx.llm.registerAdapter(providers, adapter)` 注册一个适配器实例。`GenerateOptions.provider` 选择已注册适配器；`GenerateOptions.model` 会传给该适配器，无需在生命周期启动时注册。重复提供方路由会原子失败。可选的 `providerRetryPolicy()` 会按路由捕获并填入 normal 默认值，`providerInfo()` 与异步 `listModels()` 方法则为 `LlmService.listProviders()` / `listModels()` 提供分离的 selector 元数据。该目录仅供参考，不是请求白名单：适配器仍是权威，并可接受未列出的模型 id。单次异步 `resolveModel()` 查询返回确切模型身份，以及可选的对正确性敏感的上下文容量、适配器配置的 `defaultMaxTokens`、由模型持有的有序推理强度 ID 和部署默认值；字段缺失表示元数据不可用或保留提供方持有的行为，而不表示目录成员关系无效。解析器会接收可选的取消信号，并且必须在信号中止后迅速完成结算。`LlmService.resolveModelInfo()` 会校验聚合结果并返回分离值。在最终适配器边界，`resolveCallConfig()` 仅在 `maxTokens` 缺失时填入输出默认值，并校验和填入推理强度，因此直接调用也无法绕过任何一项已配置行为；直接分派会在等待解析前捕获一项适配器注册。agent loop 则使用 `prepareCall()`，使模型解析、请求头持久记录和分派全程使用同一项注册，保留来自同一次查询的分离上下文元数据，并报告适配器填入的配置字段。适配器查找发生在 `llm/stream` waterfall（瀑布式事件）的终端 continuation，因此 listener 可以在查找前短路调用，或路由一个可变的一次性请求。AgentLoop 在外层 waterfall 返回流句柄时观察到一次请求尝试；这个有限边界不能证明惰性终端适配器已构造完成或开始提供方 I/O。`block-start` / `block-end` 的 `index` 关联与 assembler 共同意味着适配器只需 emit 格式正确的分片——块重组不是每个适配器各自的问题。消费方 surface（`ctx.llm.stream()`）与 `llm/stream` waterfall 见 [architecture.md § 内容块与流式传输](../architecture.md#content-blocks-and-streaming-dsh-llm)。
 
 ```ts type-equiv
 /** One model call whose config and adapter registration were resolved together. */
 interface PreparedLlmCall {
   /** Detached, deep-frozen config with any adapter-owned default materialized. */
   readonly config: LlmCallConfig
+  /** Detached context metadata resolved with the registration-bound call. */
+  readonly context?: LlmModelContext
   /** Config fields materialized by the captured adapter rather than proposed by the caller. */
   readonly adapterDefaults: LlmCallConfigAdapterDefaults
   /**
diff --git a/docs/core-data-structures/session.i18n.yaml b/docs/core-data-structures/session.i18n.yaml
index 05398d5e7f..773df07254 100644
--- a/docs/core-data-structures/session.i18n.yaml
+++ b/docs/core-data-structures/session.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/core-data-structures/session.md
-session.md: f337a6ffb200ffbe8146ee168b1aa0c4030defe0
-session.zh.md: 1637efedbacd76cfd651badbaf699655ad8e94fb
+session.md: 6369c956df03c0d786db696c208b000300d5bfbc
+session.zh.md: c39382b7e6c9b14f91c311cc80526a6fd8898e4c
diff --git a/docs/core-data-structures/session.md b/docs/core-data-structures/session.md
index f337a6ffb2..6369c956df 100644
--- a/docs/core-data-structures/session.md
+++ b/docs/core-data-structures/session.md
@@ -91,6 +91,16 @@ interface SessionEventMap {
    * It is log-only; the latest snapshot reconstructs the request header.
    */
   'request/header': { header: EpochHeader; reason: RequestHeaderReason }
+  /**
+   * Registration-bound context metadata for the route a request resolved to,
+   * appended inside its step beside `request/header` and only when the route
+   * or capacity differs from the last record. It is log-only and deliberately
+   * NOT part of {@link EpochHeader}: capacity is adapter metadata about a
+   * route, not an input the request was built from, so it must not participate
+   * in request reconstruction or header equality. `contextWindow` is absent
+   * when the route's adapter advertises no capacity.
+   */
+  'request/context': RequestContext
   /**
    * Marks the end of a constructor seed. Events before it have smaller seq
    * values and came from the seed (resume, fork, or replay); this lifecycle
@@ -168,6 +178,26 @@ interface EpochHeader {
 
 Canonical form represents an empty system prompt or tool list as an absent field, matching how requests are built. Legacy v0 logs containing the removed `request/header-delta` event or its full-snapshot `fallback` reason are rejected at seed, append, and persistence-load boundaries rather than replayed incompletely.
 
+### The route capacity event: `request/context`
+
+The context metadata of the route a request resolved to is separate logged state, appended beside `request/header` inside the same step and only when the provider, model, or capacity differs from the previous record. It stays outside `EpochHeader` because that type is the reconstruction contract compared field-wise by `headerEquals`: capacity describes a route, not a request input, so folding it in would let a capacity change register as a request-envelope `change` and would pull adapter metadata into the loop's reconstruction invariant. Like `request/header`, it is not a `SurfaceEventType` and produces no LLM message. `session.requestContext()` folds the latest record incrementally. A route whose adapter advertises no capacity is recorded with `contextWindow` absent, so the new record clears an older route's capacity.
+
+```ts type-equiv
+/**
+ * Registration-bound context metadata of one resolved model route. Adapter
+ * metadata about a route rather than a request input, which is why it lives
+ * outside {@link EpochHeader}.
+ */
+interface RequestContext {
+  /** Registered provider route the metadata was resolved through. */
+  provider: string
+  /** Provider-owned model id the metadata belongs to. */
+  model: string
+  /** Maximum combined request and response context in tokens; absent when the adapter advertises none. */
+  contextWindow?: number
+}
+```
+
 ## `SessionEvent` — one log entry
 
 A proper discriminated union over `type` (not independent `type`/`data` unions), so `switch (event.type)` narrows `event.data` without casts. `seq` is the monotonic position in the log (`seq = log.length`); `time` is epoch ms.
@@ -429,6 +459,14 @@ declare class Session {
    * @returns the folded header, or undefined when no header event exists yet.
    */
   requestHeader(): EpochHeader | undefined;
+  /**
+   * The route metadata in force after the log's last `request/context` event —
+   * what the NEXT request deduplicates against — or undefined before any such
+   * record. Maintained incrementally like {@link requestHeader}, so a per-step
+   * read costs O(new events).
+   * @returns the folded context record, or undefined when none exists yet.
+   */
+  requestContext(): RequestContext | undefined;
   /**
    * Derive the LLM message history by walking the ordered sequences of
    * message-producing events maintained by `surfaceOp` markers. The
diff --git a/docs/core-data-structures/session.zh.md b/docs/core-data-structures/session.zh.md
index 1637efedba..c39382b7e6 100644
--- a/docs/core-data-structures/session.zh.md
+++ b/docs/core-data-structures/session.zh.md
@@ -91,6 +91,16 @@ interface SessionEventMap {
    * It is log-only; the latest snapshot reconstructs the request header.
    */
   'request/header': { header: EpochHeader; reason: RequestHeaderReason }
+  /**
+   * Registration-bound context metadata for the route a request resolved to,
+   * appended inside its step beside `request/header` and only when the route
+   * or capacity differs from the last record. It is log-only and deliberately
+   * NOT part of {@link EpochHeader}: capacity is adapter metadata about a
+   * route, not an input the request was built from, so it must not participate
+   * in request reconstruction or header equality. `contextWindow` is absent
+   * when the route's adapter advertises no capacity.
+   */
+  'request/context': RequestContext
   /**
    * Marks the end of a constructor seed. Events before it have smaller seq
    * values and came from the seed (resume, fork, or replay); this lifecycle
@@ -170,6 +180,26 @@ interface EpochHeader {
 
 规范形式：空系统提示词和空工具列表都表示为字段缺失，与请求构建方式一致。包含已移除的 `request/header-delta` 事件或完整快照原因为 `fallback` 的旧版 v0 日志，会在 seed、append 和持久化加载边界被拒绝，而不会以不完整方式回放。
 
+### 路由容量事件：`request/context`
+
+请求所解析到的路由的上下文元数据是独立的已记录状态，在同一步骤内紧随 `request/header` 追加，且仅在提供方、模型或容量与上一条记录不同时追加。它保持在 `EpochHeader` 之外，因为该类型是由 `headerEquals` 逐字段比较的重建契约：容量描述的是路由，不是请求输入，把它折叠进去会让一次容量变化被登记为请求信封的 `change`，也会把适配器元数据拉进 loop 的重建不变式。与 `request/header` 一样，它不是 `SurfaceEventType`，也不产生 LLM 消息。`session.requestContext()` 以增量方式归并最新一条记录。适配器不公布容量的路由会以缺失 `contextWindow` 的形式记录，因此新记录可以清除较早路由的容量。
+
+```ts type-equiv
+/**
+ * Registration-bound context metadata of one resolved model route. Adapter
+ * metadata about a route rather than a request input, which is why it lives
+ * outside {@link EpochHeader}.
+ */
+interface RequestContext {
+  /** Registered provider route the metadata was resolved through. */
+  provider: string
+  /** Provider-owned model id the metadata belongs to. */
+  model: string
+  /** Maximum combined request and response context in tokens; absent when the adapter advertises none. */
+  contextWindow?: number
+}
+```
+
 ## `SessionEvent`：一条日志条目
 
 基于 `type` 的真正可辨识联合（而非独立的 `type`/`data` 联合），因此 `switch (event.type)` 能直接收窄 `event.data`，无需类型断言。`seq` 是日志中的单调递增位置（`seq = log.length`）；`time` 为 epoch 毫秒。
@@ -431,6 +461,14 @@ declare class Session {
    * @returns the folded header, or undefined when no header event exists yet.
    */
   requestHeader(): EpochHeader | undefined;
+  /**
+   * The route metadata in force after the log's last `request/context` event —
+   * what the NEXT request deduplicates against — or undefined before any such
+   * record. Maintained incrementally like {@link requestHeader}, so a per-step
+   * read costs O(new events).
+   * @returns the folded context record, or undefined when none exists yet.
+   */
+  requestContext(): RequestContext | undefined;
   /**
    * Derive the LLM message history by walking the ordered sequences of
    * message-producing events maintained by `surfaceOp` markers. The
diff --git a/docs/core-data-structures/system-prompt.i18n.yaml b/docs/core-data-structures/system-prompt.i18n.yaml
index e697ec6bcd..2984c73425 100644
--- a/docs/core-data-structures/system-prompt.i18n.yaml
+++ b/docs/core-data-structures/system-prompt.i18n.yaml
@@ -1,6 +1,6 @@
 # Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
-#   pnpm run verify-translation-pairing --write
-system-prompt.md: 63a750c74300b4353f132d3dae9da52a10631f23
-system-prompt.zh.md: 3f7ab9aee5743616f00e95e81fb9a3a4af2c6e8a
+#   pnpm run verify-translation-pairing --write docs/core-data-structures/system-prompt.md
+system-prompt.md: 5abb8f46c13045c7d37bbe12ecf6c3744ee063b5
+system-prompt.zh.md: 1088b20ba4289ad5912a193eead39d069c1a6e17
diff --git a/docs/core-data-structures/system-prompt.md b/docs/core-data-structures/system-prompt.md
index 63a750c743..5abb8f46c1 100644
--- a/docs/core-data-structures/system-prompt.md
+++ b/docs/core-data-structures/system-prompt.md
@@ -60,3 +60,23 @@ interface PromptSection {
   readonly text: string | ((context: AssembleContext) => string)
 }
 ```
+
+## Dynamic prompt context
+
+`PromptContext` is the cache-safe counterpart to `PromptSection`. The assembly resolves and orders these contributions, while agent-loop logs their complete current snapshot after retained model history only when it changed or compaction removed it.
+
+```ts type-equiv
+/**
+ * One dynamic model-context contribution. Unlike a {@link PromptSection}, its
+ * rendered text is materialized as a durable user-role snapshot at the request
+ * tail, so changing runtime state preserves the stable system/history prefix.
+ */
+interface PromptContext {
+  /** Unique name — a duplicate registration throws (see {@link SystemPrompt.context}). */
+  readonly name: string
+  /** Contexts are joined in ascending order, independently of system-section order. */
+  readonly order: number
+  /** Static text or a provider evaluated for each assembly. Empty text contributes nothing. */
+  readonly text: string | ((context: AssembleContext) => string)
+}
+```
diff --git a/docs/core-data-structures/system-prompt.zh.md b/docs/core-data-structures/system-prompt.zh.md
index 3f7ab9aee5..1088b20ba4 100644
--- a/docs/core-data-structures/system-prompt.zh.md
+++ b/docs/core-data-structures/system-prompt.zh.md
@@ -60,3 +60,23 @@ interface PromptSection {
   readonly text: string | ((context: AssembleContext) => string)
 }
 ```
+
+## 动态提示词上下文
+
+`PromptContext` 是与 `PromptSection` 对应的缓存安全结构。组装会解析这些贡献并排序；agent loop（智能体循环）仅在完整当前快照发生变化或被压缩（compaction）移除时，才会将其记录在保留的模型历史之后。
+
+```ts type-equiv
+/**
+ * One dynamic model-context contribution. Unlike a {@link PromptSection}, its
+ * rendered text is materialized as a durable user-role snapshot at the request
+ * tail, so changing runtime state preserves the stable system/history prefix.
+ */
+interface PromptContext {
+  /** Unique name — a duplicate registration throws (see {@link SystemPrompt.context}). */
+  readonly name: string
+  /** Contexts are joined in ascending order, independently of system-section order. */
+  readonly order: number
+  /** Static text or a provider evaluated for each assembly. Empty text contributes nothing. */
+  readonly text: string | ((context: AssembleContext) => string)
+}
+```
diff --git a/docs/event-producer-consumer.md b/docs/event-producer-consumer.md
index 61efba0675..f2007c814a 100644
--- a/docs/event-producer-consumer.md
+++ b/docs/event-producer-consumer.md
@@ -22,7 +22,7 @@ This matrix shows which packages dispatch each harness-owned event and which pac
 | `agent/session-start` | `emit` | [`packages/core/agent/src/types.ts:346`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emitAgentEvent`) | [`goal`](../packages/goal/goal), [`goal-session`](../packages/goal/goal-session), [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex), [`workspace-context`](../packages/context/workspace-context) |
 | `agent/settled` | `emit` | [`packages/core/agent/src/types.ts:434`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emitAgentEvent`) | [`compact-basic`](../packages/compact/compact-basic) |
 | `agent/status` | `emit` | [`packages/core/agent/src/types.ts:282`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emitAgentEvent`) | [`agent`](../packages/core/agent), `apiproxy`, [`goal-session`](../packages/goal/goal-session), [`tui`](../packages/ui/tui) |
-| `agent/step` | `serial` | [`packages/core/agent/src/types.ts:373`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`compact-basic`](../packages/compact/compact-basic), [`plan-mode`](../packages/plan/plan-mode), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`time-context`](../packages/context/time-context), [`tmux-context`](../packages/context/tmux-context), [`tool-skill`](../packages/skill/tool-skill), [`user-approval`](../packages/ui/user-approval), [`workspace-context`](../packages/context/workspace-context) |
+| `agent/step` | `serial` | [`packages/core/agent/src/types.ts:373`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`compact-basic`](../packages/compact/compact-basic), [`plan-mode`](../packages/plan/plan-mode), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`time-context`](../packages/context/time-context), [`tmux-context`](../packages/context/tmux-context), [`tool-skill`](../packages/skill/tool-skill), [`workspace-context`](../packages/context/workspace-context) |
 | `agent/turn-stopping` | `serial` | [`packages/core/agent/src/types.ts:420`](../packages/core/agent/src/types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`hooks-codex`](../packages/hooks/hooks-codex) |
 | `approval/request` | `waterfall` | [`packages/ui/user-approval/src/index.ts:30`](../packages/ui/user-approval/src/index.ts) | [`user-approval`](../packages/ui/user-approval) (`waterfall`) | [`acp`](../packages/acp/acp), `apiproxy` |
 | `commands/change` | `emit` | [`packages/ui/commands/src/index.ts:154`](../packages/ui/commands/src/index.ts) | [`commands`](../packages/ui/commands) (`events.dispatch`) | `apiproxy`, [`tui`](../packages/ui/tui) |
@@ -32,8 +32,8 @@ This matrix shows which packages dispatch each harness-owned event and which pac
 | `fs/observed` | `emit` | [`packages/fs/fs/src/index.ts:71`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`emit`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`emit`) | [`fs-policy`](../packages/fs/fs-policy), [`skill-local`](../packages/skill/skill-local) |
 | `fs/write-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:54`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-policy`](../packages/fs/fs-policy) |
 | `goal/changed` | `emit` | [`packages/goal/goal/src/domain.ts:135`](../packages/goal/goal/src/domain.ts) | [`goal`](../packages/goal/goal) (`emit`) | [`goal-session`](../packages/goal/goal-session) |
-| `llm/adapters-updated` | `emit` | [`packages/llm/llm/src/index.ts:70`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`events.dispatch`) | `apiproxy`, [`llm`](../packages/llm/llm), [`tui`](../packages/ui/tui) |
-| `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:59`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`agent-loop`](../packages/core/agent-loop), [`llm`](../packages/llm/llm), [`llm-replay`](../packages/support/llm-replay), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`session-title`](../packages/session-title/session-title) |
+| `llm/adapters-updated` | `emit` | [`packages/llm/llm/src/index.ts:71`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`events.dispatch`) | `apiproxy`, [`llm`](../packages/llm/llm), [`tui`](../packages/ui/tui) |
+| `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:60`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`agent-loop`](../packages/core/agent-loop), [`llm`](../packages/llm/llm), [`llm-replay`](../packages/support/llm-replay), [`session-checkpoint-policy`](../packages/session-persistence/session-checkpoint-policy), [`session-title`](../packages/session-title/session-title) |
 | `session/created` | `emit` | [`packages/core/session/src/index.ts:71`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | `apiproxy`, [`compact`](../packages/compact/compact), [`goal`](../packages/goal/goal), [`hook-protocol`](../packages/hooks/hook-protocol), [`jsonrpc`](../packages/ui/jsonrpc), [`llm-retry`](../packages/llm/llm-retry), [`permission`](../packages/ui/permission), [`plan-mode`](../packages/plan/plan-mode), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-telemetry`](../packages/telemetry/session-telemetry), [`tools`](../packages/core/tools), [`user-approval`](../packages/ui/user-approval) |
 | `session/disposed` | `emit` | [`packages/core/session/src/index.ts:81`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`agent-loop`](../packages/core/agent-loop), `apiproxy`, [`session-persistence`](../packages/session-persistence/session-persistence), [`session-projection-cache`](../packages/session-projection/session-projection-cache), [`session-telemetry`](../packages/telemetry/session-telemetry), [`session-title`](../packages/session-title/session-title) |
 | `session/event` | `emit` | [`packages/core/session/src/index.ts:93`](../packages/core/session/src/index.ts) | [`session`](../packages/core/session) (`events.dispatch`) | [`acp`](../packages/acp/acp), `apiproxy`, [`cli-demo`](../packages/examples/cli-demo), [`compact`](../packages/compact/compact), [`compact-basic`](../packages/compact/compact-basic), [`goal`](../packages/goal/goal), [`goal-session`](../packages/goal/goal-session), [`hook-protocol`](../packages/hooks/hook-protocol), [`jsonrpc`](../packages/ui/jsonrpc), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-projection`](../packages/session-projection/session-projection), [`session-projection-cache`](../packages/session-projection/session-projection-cache), [`session-telemetry`](../packages/telemetry/session-telemetry), [`session-title`](../packages/session-title/session-title), [`token-meter`](../packages/llm/token-meter), [`tools`](../packages/core/tools), [`tui`](../packages/ui/tui), [`user-approval`](../packages/ui/user-approval), [`workspace-context`](../packages/context/workspace-context) |
diff --git a/docs/module-graph.md b/docs/module-graph.md
index d04ebe559c..eb2f7d887d 100644
--- a/docs/module-graph.md
+++ b/docs/module-graph.md
@@ -407,9 +407,6 @@ flowchart TD
   pkg_settings_local --> pkg_invariants
   pkg_settings_local --> pkg_paths
   pkg_settings_local --> pkg_settings
-  pkg_token_meter --> pkg_invariants
-  pkg_token_meter --> pkg_llm
-  pkg_token_meter --> pkg_session
   pkg_agent --> pkg_brand
   pkg_agent --> pkg_invariants
   pkg_agent --> pkg_llm
@@ -432,8 +429,6 @@ flowchart TD
   pkg_web_fetch_local --> pkg_invariants
   pkg_web_fetch_local --> pkg_timeout
   pkg_web_fetch_local --> pkg_web
-  pkg_web_search_deepseek --> pkg_invariants
-  pkg_web_search_deepseek --> pkg_web
   pkg_web_search_exa --> pkg_invariants
   pkg_web_search_exa --> pkg_web
   pkg_web_search_perplexity --> pkg_invariants
@@ -451,12 +446,6 @@ flowchart TD
   pkg_app_boot --> pkg_invariants
   pkg_app_boot --> pkg_paths
   pkg_app_boot --> pkg_system_prompt
-  pkg_client_ui_conversation --> pkg_client_locale
-  pkg_client_ui_conversation --> pkg_client_runtime
-  pkg_client_ui_conversation --> pkg_client_ui_primitives
-  pkg_client_ui_conversation --> pkg_client_ui_slash
-  pkg_client_ui_conversation --> pkg_client_ui_slots
-  pkg_client_ui_conversation --> pkg_invariants
   pkg_client_ui_layout --> pkg_client_runtime
   pkg_client_ui_layout --> pkg_client_ui_slots
   pkg_client_ui_layout --> pkg_client_ui_theme
@@ -493,9 +482,6 @@ flowchart TD
   pkg_sandbox_local --> pkg_invariants
   pkg_sandbox_local --> pkg_llm
   pkg_sandbox_local --> pkg_sandbox
-  pkg_sandbox_policy --> pkg_invariants
-  pkg_sandbox_policy --> pkg_sandbox
-  pkg_sandbox_policy --> pkg_session
   pkg_session_projection --> pkg_invariants
   pkg_session_projection --> pkg_session
   pkg_llm_retry --> pkg_agent
@@ -503,6 +489,10 @@ flowchart TD
   pkg_llm_retry --> pkg_llm
   pkg_llm_retry --> pkg_session
   pkg_llm_retry --> pkg_timeout
+  pkg_token_meter --> pkg_invariants
+  pkg_token_meter --> pkg_llm
+  pkg_token_meter --> pkg_session
+  pkg_token_meter --> pkg_session_projection
   pkg_goal --> pkg_agent
   pkg_goal --> pkg_brand
   pkg_goal --> pkg_invariants
@@ -522,13 +512,11 @@ flowchart TD
   pkg_skill_local --> pkg_invariants
   pkg_skill_local --> pkg_paths
   pkg_skill_local --> pkg_skill
-  pkg_compact_basic --> pkg_agent
-  pkg_compact_basic --> pkg_compact
-  pkg_compact_basic --> pkg_compact_tool_result_prune
-  pkg_compact_basic --> pkg_invariants
-  pkg_compact_basic --> pkg_llm
-  pkg_compact_basic --> pkg_session
-  pkg_compact_basic --> pkg_token_meter
+  pkg_web_search_deepseek --> pkg_agent
+  pkg_web_search_deepseek --> pkg_credentials
+  pkg_web_search_deepseek --> pkg_invariants
+  pkg_web_search_deepseek --> pkg_session
+  pkg_web_search_deepseek --> pkg_web
   pkg_spill_local --> pkg_invariants
   pkg_spill_local --> pkg_spill
   pkg_hook_protocol --> pkg_bash
@@ -560,14 +548,6 @@ flowchart TD
   pkg_user_interaction --> pkg_agent
   pkg_user_interaction --> pkg_invariants
   pkg_user_interaction --> pkg_llm
-  pkg_client_ui_command --> pkg_client_connection
-  pkg_client_ui_command --> pkg_client_locale
-  pkg_client_ui_command --> pkg_client_runtime
-  pkg_client_ui_command --> pkg_client_ui_conversation
-  pkg_client_ui_command --> pkg_client_ui_primitives
-  pkg_client_ui_command --> pkg_client_ui_slash
-  pkg_client_ui_command --> pkg_client_ui_slots
-  pkg_client_ui_command --> pkg_invariants
   pkg_time_context --> pkg_agent
   pkg_time_context --> pkg_invariants
   pkg_time_context --> pkg_session
@@ -582,6 +562,11 @@ flowchart TD
   pkg_pty --> pkg_agent
   pkg_pty --> pkg_brand
   pkg_pty --> pkg_invariants
+  pkg_sandbox_policy --> pkg_agent
+  pkg_sandbox_policy --> pkg_invariants
+  pkg_sandbox_policy --> pkg_sandbox
+  pkg_sandbox_policy --> pkg_session
+  pkg_sandbox_policy --> pkg_system_prompt
   pkg_scripts --> pkg_app_boot
   pkg_scripts --> pkg_invariants
   pkg_session_projection_cache --> pkg_invariants
@@ -636,6 +621,13 @@ flowchart TD
   pkg_command_compact --> pkg_commands
   pkg_command_compact --> pkg_compact
   pkg_command_compact --> pkg_invariants
+  pkg_compact_basic --> pkg_agent
+  pkg_compact_basic --> pkg_compact
+  pkg_compact_basic --> pkg_compact_tool_result_prune
+  pkg_compact_basic --> pkg_invariants
+  pkg_compact_basic --> pkg_llm
+  pkg_compact_basic --> pkg_session
+  pkg_compact_basic --> pkg_token_meter
   pkg_session_query --> pkg_brand
   pkg_session_query --> pkg_invariants
   pkg_session_query --> pkg_llm
@@ -660,23 +652,13 @@ flowchart TD
   pkg_permission --> pkg_session_projection
   pkg_permission --> pkg_settings
   pkg_permission --> pkg_user_approval
-  pkg_client_ui_goal --> pkg_client_connection
-  pkg_client_ui_goal --> pkg_client_locale
-  pkg_client_ui_goal --> pkg_client_runtime
-  pkg_client_ui_goal --> pkg_client_ui_conversation
-  pkg_client_ui_goal --> pkg_client_ui_primitives
-  pkg_client_ui_goal --> pkg_client_ui_slots
-  pkg_client_ui_goal --> pkg_goal
-  pkg_client_ui_goal --> pkg_invariants
-  pkg_client_ui_model --> pkg_client_connection
-  pkg_client_ui_model --> pkg_client_locale
-  pkg_client_ui_model --> pkg_client_runtime
-  pkg_client_ui_model --> pkg_client_ui_command
-  pkg_client_ui_model --> pkg_client_ui_conversation
-  pkg_client_ui_model --> pkg_client_ui_primitives
-  pkg_client_ui_model --> pkg_client_ui_slash
-  pkg_client_ui_model --> pkg_client_ui_slots
-  pkg_client_ui_model --> pkg_invariants
+  pkg_client_ui_conversation --> pkg_client_locale
+  pkg_client_ui_conversation --> pkg_client_runtime
+  pkg_client_ui_conversation --> pkg_client_ui_primitives
+  pkg_client_ui_conversation --> pkg_client_ui_slash
+  pkg_client_ui_conversation --> pkg_client_ui_slots
+  pkg_client_ui_conversation --> pkg_invariants
+  pkg_client_ui_conversation --> pkg_token_meter
   pkg_pty_local --> pkg_agent
   pkg_pty_local --> pkg_invariants
   pkg_pty_local --> pkg_pty
@@ -831,16 +813,22 @@ flowchart TD
   pkg_tool_ask_user --> pkg_invariants
   pkg_tool_ask_user --> pkg_tools
   pkg_tool_ask_user --> pkg_user_interaction
-  pkg_client_ui_permission --> pkg_client_connection
-  pkg_client_ui_permission --> pkg_client_locale
-  pkg_client_ui_permission --> pkg_client_runtime
-  pkg_client_ui_permission --> pkg_client_schema_form
-  pkg_client_ui_permission --> pkg_client_ui_command
-  pkg_client_ui_permission --> pkg_client_ui_primitives
-  pkg_client_ui_permission --> pkg_client_ui_slash
-  pkg_client_ui_permission --> pkg_client_ui_slots
-  pkg_client_ui_permission --> pkg_invariants
-  pkg_client_ui_permission --> pkg_permission
+  pkg_client_ui_command --> pkg_client_connection
+  pkg_client_ui_command --> pkg_client_locale
+  pkg_client_ui_command --> pkg_client_runtime
+  pkg_client_ui_command --> pkg_client_ui_conversation
+  pkg_client_ui_command --> pkg_client_ui_primitives
+  pkg_client_ui_command --> pkg_client_ui_slash
+  pkg_client_ui_command --> pkg_client_ui_slots
+  pkg_client_ui_command --> pkg_invariants
+  pkg_client_ui_goal --> pkg_client_connection
+  pkg_client_ui_goal --> pkg_client_locale
+  pkg_client_ui_goal --> pkg_client_runtime
+  pkg_client_ui_goal --> pkg_client_ui_conversation
+  pkg_client_ui_goal --> pkg_client_ui_primitives
+  pkg_client_ui_goal --> pkg_client_ui_slots
+  pkg_client_ui_goal --> pkg_goal
+  pkg_client_ui_goal --> pkg_invariants
   pkg_session_reference --> pkg_agent
   pkg_session_reference --> pkg_compact
   pkg_session_reference --> pkg_invariants
@@ -942,6 +930,25 @@ flowchart TD
   pkg_tui --> pkg_token_meter
   pkg_tui --> pkg_tools
   pkg_tui --> pkg_user_interaction
+  pkg_client_ui_model --> pkg_client_connection
+  pkg_client_ui_model --> pkg_client_locale
+  pkg_client_ui_model --> pkg_client_runtime
+  pkg_client_ui_model --> pkg_client_ui_command
+  pkg_client_ui_model --> pkg_client_ui_conversation
+  pkg_client_ui_model --> pkg_client_ui_primitives
+  pkg_client_ui_model --> pkg_client_ui_slash
+  pkg_client_ui_model --> pkg_client_ui_slots
+  pkg_client_ui_model --> pkg_invariants
+  pkg_client_ui_permission --> pkg_client_connection
+  pkg_client_ui_permission --> pkg_client_locale
+  pkg_client_ui_permission --> pkg_client_runtime
+  pkg_client_ui_permission --> pkg_client_schema_form
+  pkg_client_ui_permission --> pkg_client_ui_command
+  pkg_client_ui_permission --> pkg_client_ui_primitives
+  pkg_client_ui_permission --> pkg_client_ui_slash
+  pkg_client_ui_permission --> pkg_client_ui_slots
+  pkg_client_ui_permission --> pkg_invariants
+  pkg_client_ui_permission --> pkg_permission
   pkg_client_ui_plan --> pkg_client_connection
   pkg_client_ui_plan --> pkg_client_locale
   pkg_client_ui_plan --> pkg_client_runtime
@@ -1101,21 +1108,18 @@ flowchart TD
 | [`lsp`](../packages/lsp/lsp) | `lsp` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm) |
 | [`sandbox`](../packages/sandbox/sandbox) | `sandbox` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm) |
 | [`settings-local`](../packages/settings/settings-local) | `settings` | [`atomic-write`](../packages/util/atomic-write), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`settings`](../packages/settings/settings) |
-| [`token-meter`](../packages/llm/token-meter) | `llm` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`agent`](../packages/core/agent) | `core` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt) |
 | [`bash`](../packages/bash/bash) | `bash` | [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`subprocess`](../packages/subprocess/subprocess) |
 | [`fs`](../packages/fs/fs) | `fs` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`sandbox`](../packages/sandbox/sandbox) |
 | [`compact`](../packages/compact/compact) | `compact` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`compact-tool-result-prune`](../packages/compact/compact-tool-result-prune) | `compact` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`web-fetch-local`](../packages/web/web-fetch-local) | `web` | [`invariants`](../packages/support/invariants), [`timeout`](../packages/util/timeout), [`web`](../packages/web/web) |
-| [`web-search-deepseek`](../packages/web/web-search-deepseek) | `web` | [`invariants`](../packages/support/invariants), [`web`](../packages/web/web) |
 | [`web-search-exa`](../packages/web/web-search-exa) | `web` | [`invariants`](../packages/support/invariants), [`web`](../packages/web/web) |
 | [`web-search-perplexity`](../packages/web/web-search-perplexity) | `web` | [`invariants`](../packages/support/invariants), [`web`](../packages/web/web) |
 | [`spill`](../packages/spill/spill) | `spill` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`session-persistence`](../packages/session-persistence/session-persistence) | `session-persistence` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
 | [`llm-replay`](../packages/support/llm-replay) | `support` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`app-boot`](../packages/ui/app-boot) | `ui` | [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`system-prompt`](../packages/core/system-prompt) |
-| [`client-ui-conversation`](../packages/client/ui-conversation) | `client` | [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
 | [`client-ui-layout`](../packages/client/ui-layout) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-ui-theme`](../packages/client/ui-theme), [`invariants`](../packages/support/invariants) |
 | [`client-ui-skill`](../packages/client/ui-skill) | `client` | [`client-connection`](../packages/client/connection), [`client-runtime`](../packages/client/runtime), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
 | [`client-ui-subagent`](../packages/client/ui-subagent) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
@@ -1124,15 +1128,15 @@ flowchart TD
 | [`host-directory-picker-native`](../packages/host/directory-picker-native) | `host` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-ui-workspace`](../packages/client/ui-workspace), [`invariants`](../packages/support/invariants) |
 | [`lsp-local`](../packages/lsp/lsp-local) | `lsp` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`lsp`](../packages/lsp/lsp), [`subprocess`](../packages/subprocess/subprocess), [`timeout`](../packages/util/timeout) |
 | [`sandbox-local`](../packages/sandbox/sandbox-local) | `sandbox` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`sandbox`](../packages/sandbox/sandbox) |
-| [`sandbox-policy`](../packages/sandbox/sandbox-policy) | `sandbox` | [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`session`](../packages/core/session) |
 | [`session-projection`](../packages/session-projection/session-projection) | `session-projection` | [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
 | [`llm-retry`](../packages/llm/llm-retry) | `llm` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
+| [`token-meter`](../packages/llm/token-meter) | `llm` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-projection`](../packages/session-projection/session-projection) |
 | [`goal`](../packages/goal/goal) | `goal` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`session-projection`](../packages/session-projection/session-projection) |
 | [`bash-local`](../packages/bash/bash-local) | `bash` | [`bash`](../packages/bash/bash), [`invariants`](../packages/support/invariants), [`subprocess`](../packages/subprocess/subprocess), [`timeout`](../packages/util/timeout) |
 | [`fs-local`](../packages/fs/fs-local) | `fs` | [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants) |
 | [`fs-policy`](../packages/fs/fs-policy) | `fs` | [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants) |
 | [`skill-local`](../packages/skill/skill-local) | `skill` | [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`skill`](../packages/skill/skill) |
-| [`compact-basic`](../packages/compact/compact-basic) | `compact` | [`agent`](../packages/core/agent), [`compact`](../packages/compact/compact), [`compact-tool-result-prune`](../packages/compact/compact-tool-result-prune), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`token-meter`](../packages/llm/token-meter) |
+| [`web-search-deepseek`](../packages/web/web-search-deepseek) | `web` | [`agent`](../packages/core/agent), [`credentials`](../packages/credentials/credentials), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`web`](../packages/web/web) |
 | [`spill-local`](../packages/spill/spill-local) | `spill` | [`invariants`](../packages/support/invariants), [`spill`](../packages/spill/spill) |
 | [`hook-protocol`](../packages/hooks/hook-protocol) | `hooks` | [`bash`](../packages/bash/bash), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
 | [`session-persistence-jsonl`](../packages/session-persistence/session-persistence-jsonl) | `session-persistence` | [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence) |
@@ -1141,11 +1145,11 @@ flowchart TD
 | [`commands`](../packages/ui/commands) | `ui` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`scope`](../packages/core/scope), [`session`](../packages/core/session) |
 | [`user-approval`](../packages/ui/user-approval) | `ui` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt) |
 | [`user-interaction`](../packages/ui/user-interaction) | `ui` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm) |
-| [`client-ui-command`](../packages/client/ui-command) | `client` | [`client-connection`](../packages/client/connection), [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
 | [`time-context`](../packages/context/time-context) | `context` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
 | [`tmux-context`](../packages/context/tmux-context) | `context` | [`agent`](../packages/core/agent), [`bash`](../packages/bash/bash), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
 | [`host-directory-picker-auto`](../packages/host/directory-picker-auto) | `host` | [`host-directory-picker-browse`](../packages/host/directory-picker-browse), [`host-directory-picker-native`](../packages/host/directory-picker-native), [`host-webserver`](../packages/host/webserver), [`invariants`](../packages/support/invariants) |
 | [`pty`](../packages/pty/pty) | `pty` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants) |
+| [`sandbox-policy`](../packages/sandbox/sandbox-policy) | `sandbox` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt) |
 | [`scripts`](../packages/sdk/scripts) | `sdk` | [`app-boot`](../packages/ui/app-boot), [`invariants`](../packages/support/invariants) |
 | [`session-projection-cache`](../packages/session-projection/session-projection-cache) | `session-projection` | [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-projection`](../packages/session-projection/session-projection), [`storage-domain`](../packages/storage/storage-domain) |
 | [`tasks`](../packages/tasks/tasks) | `tasks` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
@@ -1158,12 +1162,12 @@ flowchart TD
 | [`bash-sandbox`](../packages/bash/bash-sandbox) | `bash` | [`bash`](../packages/bash/bash), [`bash-local`](../packages/bash/bash-local), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy) |
 | [`fs-sandbox`](../packages/fs/fs-sandbox) | `fs` | [`fs`](../packages/fs/fs), [`fs-local`](../packages/fs/fs-local), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy) |
 | [`command-compact`](../packages/compact/command-compact) | `compact` | [`commands`](../packages/ui/commands), [`compact`](../packages/compact/compact), [`invariants`](../packages/support/invariants) |
+| [`compact-basic`](../packages/compact/compact-basic) | `compact` | [`agent`](../packages/core/agent), [`compact`](../packages/compact/compact), [`compact-tool-result-prune`](../packages/compact/compact-tool-result-prune), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`token-meter`](../packages/llm/token-meter) |
 | [`session-query`](../packages/session-query/session-query) | `session-query` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-title`](../packages/session-title/session-title) |
 | [`session-title-llm`](../packages/session-title/session-title-llm) | `session-title` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-title`](../packages/session-title/session-title), [`timeout`](../packages/util/timeout) |
 | [`acp`](../packages/acp/acp) | `acp` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`user-approval`](../packages/ui/user-approval) |
 | [`permission`](../packages/ui/permission) | `ui` | [`bash`](../packages/bash/bash), [`commands`](../packages/ui/commands), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`session-projection`](../packages/session-projection/session-projection), [`settings`](../packages/settings/settings), [`user-approval`](../packages/ui/user-approval) |
-| [`client-ui-goal`](../packages/client/ui-goal) | `client` | [`client-connection`](../packages/client/connection), [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`goal`](../packages/goal/goal), [`invariants`](../packages/support/invariants) |
-| [`client-ui-model`](../packages/client/ui-model) | `client` | [`client-connection`](../packages/client/connection), [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-command`](../packages/client/ui-command), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
+| [`client-ui-conversation`](../packages/client/ui-conversation) | `client` | [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants), [`token-meter`](../packages/llm/token-meter) |
 | [`pty-local`](../packages/pty/pty-local) | `pty` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`pty`](../packages/pty/pty), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`subprocess`](../packages/subprocess/subprocess) |
 | [`tasks-local`](../packages/tasks/tasks-local) | `tasks` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`tasks`](../packages/tasks/tasks), [`timeout`](../packages/util/timeout) |
 | [`session-telemetry-otel`](../packages/telemetry/session-telemetry-otel) | `telemetry` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`paths`](../packages/util/paths), [`session`](../packages/core/session), [`session-telemetry`](../packages/telemetry/session-telemetry) |
@@ -1189,7 +1193,8 @@ flowchart TD
 | [`session-title-first-message-llm`](../packages/session-title/session-title-first-message-llm) | `session-title` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-title`](../packages/session-title/session-title), [`session-title-llm`](../packages/session-title/session-title-llm) |
 | [`agent-loop-testkit`](../packages/support/agent-loop-testkit) | `support` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools) |
 | [`tool-ask-user`](../packages/ui/tool-ask-user) | `ui` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`tools`](../packages/core/tools), [`user-interaction`](../packages/ui/user-interaction) |
-| [`client-ui-permission`](../packages/client/ui-permission) | `client` | [`client-connection`](../packages/client/connection), [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-schema-form`](../packages/client/schema-form), [`client-ui-command`](../packages/client/ui-command), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants), [`permission`](../packages/ui/permission) |
+| [`client-ui-command`](../packages/client/ui-command) | `client` | [`client-connection`](../packages/client/connection), [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
+| [`client-ui-goal`](../packages/client/ui-goal) | `client` | [`client-connection`](../packages/client/connection), [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`goal`](../packages/goal/goal), [`invariants`](../packages/support/invariants) |
 | [`session-reference`](../packages/context/session-reference) | `context` | [`agent`](../packages/core/agent), [`compact`](../packages/compact/compact), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`retention`](../packages/util/retention), [`session`](../packages/core/session), [`session-query`](../packages/session-query/session-query) |
 | [`workspace-context`](../packages/context/workspace-context) | `context` | [`agent`](../packages/core/agent), [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`paths`](../packages/util/paths), [`session`](../packages/core/session), [`tools`](../packages/core/tools) |
 | [`repeat-tool-guard`](../packages/guard/repeat-tool-guard) | `guard` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`tools`](../packages/core/tools) |
@@ -1204,6 +1209,8 @@ flowchart TD
 | [`tool-subagent`](../packages/subagent/tool-subagent) | `subagent` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`subagent`](../packages/subagent/subagent), [`tasks`](../packages/tasks/tasks), [`tools`](../packages/core/tools) |
 | [`hooks-claude`](../packages/hooks/hooks-claude) | `hooks` | [`agent`](../packages/core/agent), [`hook-protocol`](../packages/hooks/hook-protocol), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools) |
 | [`tui`](../packages/ui/tui) | `ui` | [`agent`](../packages/core/agent), [`agent-loop`](../packages/core/agent-loop), [`commands`](../packages/ui/commands), [`compact`](../packages/compact/compact), [`goal`](../packages/goal/goal), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`llm-retry`](../packages/llm/llm-retry), [`session`](../packages/core/session), [`session-persistence`](../packages/session-persistence/session-persistence), [`session-query`](../packages/session-query/session-query), [`session-reference`](../packages/context/session-reference), [`session-title`](../packages/session-title/session-title), [`skill`](../packages/skill/skill), [`subprocess`](../packages/subprocess/subprocess), [`system-prompt`](../packages/core/system-prompt), [`token-meter`](../packages/llm/token-meter), [`tools`](../packages/core/tools), [`user-interaction`](../packages/ui/user-interaction) |
+| [`client-ui-model`](../packages/client/ui-model) | `client` | [`client-connection`](../packages/client/connection), [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-command`](../packages/client/ui-command), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants) |
+| [`client-ui-permission`](../packages/client/ui-permission) | `client` | [`client-connection`](../packages/client/connection), [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-schema-form`](../packages/client/schema-form), [`client-ui-command`](../packages/client/ui-command), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slash`](../packages/client/ui-slash), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants), [`permission`](../packages/ui/permission) |
 | [`client-ui-plan`](../packages/client/ui-plan) | `client` | [`client-connection`](../packages/client/connection), [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`invariants`](../packages/support/invariants), [`plan-mode`](../packages/plan/plan-mode) |
 | [`agent-spine-demo`](../packages/examples/agent-spine-demo) | `examples` | [`agent`](../packages/core/agent), [`agent-loop`](../packages/core/agent-loop), [`goal`](../packages/goal/goal), [`goal-session`](../packages/goal/goal-session), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`llm-retry`](../packages/llm/llm-retry), [`paths`](../packages/util/paths), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`session-title`](../packages/session-title/session-title), [`skill`](../packages/skill/skill), [`skill-local`](../packages/skill/skill-local), [`system-prompt`](../packages/core/system-prompt), [`tasks-local`](../packages/tasks/tasks-local), [`tool-bash`](../packages/bash/tool-bash), [`tool-goal`](../packages/goal/tool-goal), [`tool-skill`](../packages/skill/tool-skill), [`tool-tasks`](../packages/tasks/tool-tasks), [`tools`](../packages/core/tools), [`workspace-context`](../packages/context/workspace-context) |
 | [`sdk-protocol`](../packages/sdk/sdk-protocol) | `sdk` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent) |
diff --git a/docs/persistence-catalog.md b/docs/persistence-catalog.md
index 44f1edaeef..b02dd1d6be 100644
--- a/docs/persistence-catalog.md
+++ b/docs/persistence-catalog.md
@@ -78,7 +78,7 @@ export type SessionEvent = {
 }[T]
 ```
 
-Sources: [`packages/core/session/src/types.ts:284`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:291`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:320`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:352`](../packages/core/session/src/types.ts)
+Sources: [`packages/core/session/src/types.ts:308`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:315`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:344`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:376`](../packages/core/session/src/types.ts)
 
 ## Events
 
@@ -129,7 +129,7 @@ Source: [`packages/ui/user-approval/src/index.ts:55`](../packages/ui/user-approv
 /**
  * The session's approval policy was switched — log-only, durable,
  * replayable, never in the model transcript (the model learns the policy
- * from the prompt section and the narrator's notices). The LAST such
+ * from the cache-safe runtime-context snapshot). The LAST such
  * event is the session's override ({@link effectiveApprovalPolicy}).
  * `source: 'delegation'` marks an override seeded into a child; an absent
  * source is a runtime switch.
@@ -154,7 +154,7 @@ Source: [`packages/ui/user-approval/src/index.ts:67`](../packages/ui/user-approv
 
 Types: [StreamChunk](core-data-structures/llm-streaming.md)
 
-Source: [`packages/core/session/src/types.ts:215`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:229`](../packages/core/session/src/types.ts)
 
 #### `assistant/message` — surface
 
@@ -170,7 +170,7 @@ Source: [`packages/core/session/src/types.ts:215`](../packages/core/session/src/
 
 Types: [TokenUsage](core-data-structures/llm-streaming.md)
 
-Source: [`packages/core/session/src/types.ts:222`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:236`](../packages/core/session/src/types.ts)
 
 ### `command/*`
 
@@ -376,6 +376,23 @@ Source: [`packages/plan/plan-mode/src/index.ts:51`](../packages/plan/plan-mode/s
 
 ### `request/*`
 
+#### `request/context` — log-only
+
+```ts persistence-catalog
+/**
+ * Registration-bound context metadata for the route a request resolved to,
+ * appended inside its step beside `request/header` and only when the route
+ * or capacity differs from the last record. It is log-only and deliberately
+ * NOT part of {@link EpochHeader}: capacity is adapter metadata about a
+ * route, not an input the request was built from, so it must not participate
+ * in request reconstruction or header equality. `contextWindow` is absent
+ * when the route's adapter advertises no capacity.
+ */
+'request/context': RequestContext
+```
+
+Source: [`packages/core/session/src/types.ts:279`](../packages/core/session/src/types.ts)
+
 #### `request/header` — log-only
 
 ```ts persistence-catalog
@@ -386,7 +403,7 @@ Source: [`packages/plan/plan-mode/src/index.ts:51`](../packages/plan/plan-mode/s
 'request/header': { header: EpochHeader; reason: RequestHeaderReason }
 ```
 
-Source: [`packages/core/session/src/types.ts:255`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:269`](../packages/core/session/src/types.ts)
 
 ### `sandbox/*`
 
@@ -441,7 +458,7 @@ Source: [`packages/sandbox/sandbox-policy/src/session-mode.ts:33`](../packages/s
 'session/end-seed': Record
 ```
 
-Source: [`packages/core/session/src/types.ts:280`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:304`](../packages/core/session/src/types.ts)
 
 #### `session/title` — log-only
 
@@ -477,7 +494,7 @@ Source: [`packages/session-title/session-title-llm/src/index.ts:43`](../packages
 'steering/message': { turn: number; message: UserMessage }
 ```
 
-Source: [`packages/core/session/src/types.ts:248`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:262`](../packages/core/session/src/types.ts)
 
 ### `step/*`
 
@@ -488,7 +505,7 @@ Source: [`packages/core/session/src/types.ts:248`](../packages/core/session/src/
 'step/end': { turn: number; step: number }
 ```
 
-Source: [`packages/core/session/src/types.ts:204`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:218`](../packages/core/session/src/types.ts)
 
 #### `step/start` — log-only
 
@@ -497,7 +514,7 @@ Source: [`packages/core/session/src/types.ts:204`](../packages/core/session/src/
 'step/start': { turn: number; step: number }
 ```
 
-Source: [`packages/core/session/src/types.ts:202`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:216`](../packages/core/session/src/types.ts)
 
 ### `todo/*`
 
@@ -510,7 +527,7 @@ Source: [`packages/core/session/src/types.ts:202`](../packages/core/session/src/
 
 Types: [TodoItem](core-data-structures/session.md)
 
-Source: [`packages/core/session/src/types.ts:250`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:264`](../packages/core/session/src/types.ts)
 
 ### `tool/*`
 
@@ -527,7 +544,7 @@ Source: [`packages/core/session/src/types.ts:250`](../packages/core/session/src/
 
 Types: [CallId](core-data-structures/core.md)
 
-Source: [`packages/core/session/src/types.ts:228`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:242`](../packages/core/session/src/types.ts)
 
 #### `tool/code-dispatch` — log-only
 
@@ -600,7 +617,7 @@ Source: [`packages/core/tools/src/code-mode.ts:33`](../packages/core/tools/src/c
 }
 ```
 
-Source: [`packages/core/session/src/types.ts:240`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:254`](../packages/core/session/src/types.ts)
 
 ### `turn/*`
 
@@ -618,7 +635,7 @@ Source: [`packages/core/session/src/types.ts:240`](../packages/core/session/src/
 
 Types: [TurnEndReason](core-data-structures/session.md)
 
-Source: [`packages/core/session/src/types.ts:200`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:214`](../packages/core/session/src/types.ts)
 
 #### `turn/start` — log-only
 
@@ -631,7 +648,7 @@ Source: [`packages/core/session/src/types.ts:200`](../packages/core/session/src/
 
 Types: [TurnTrigger](core-data-structures/session.md)
 
-Source: [`packages/core/session/src/types.ts:193`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:207`](../packages/core/session/src/types.ts)
 
 ### `user/*`
 
@@ -649,4 +666,15 @@ Source: [`packages/core/session/src/types.ts:193`](../packages/core/session/src/
 'user/message': UserMessage
 ```
 
-Source: [`packages/core/session/src/types.ts:213`](../packages/core/session/src/types.ts)
+Source: [`packages/core/session/src/types.ts:227`](../packages/core/session/src/types.ts)
+
+### `web/*`
+
+#### `web/deepseek-search-llm-request` — log-only
+
+```ts persistence-catalog
+/** Secret-free auxiliary DeepSeek search request recorded before dispatch. */
+'web/deepseek-search-llm-request': DeepSeekSearchLlmRequest
+```
+
+Source: [`packages/web/web-search-deepseek/src/provider.ts:83`](../packages/web/web-search-deepseek/src/provider.ts)
diff --git a/examples/acp-agent/session-sandbox-root.cordis.snapshot.yml b/examples/acp-agent/session-sandbox-root.cordis.snapshot.yml
index d829673844..02b1d303d4 100644
--- a/examples/acp-agent/session-sandbox-root.cordis.snapshot.yml
+++ b/examples/acp-agent/session-sandbox-root.cordis.snapshot.yml
@@ -36,7 +36,7 @@
       - id: sandbox-policy
         name: '@deepseek-ai/dsh-sandbox-policy'
         config:
-          mode: danger-full-access
+          mode: workspace-write
           workspaceRoot: /tmp
       - insert:
           - id: llm-replay
diff --git a/examples/acp-agent/tests/acp.snapshot.ts b/examples/acp-agent/tests/acp.snapshot.ts
index b3508c3ae5..b652f09931 100644
--- a/examples/acp-agent/tests/acp.snapshot.ts
+++ b/examples/acp-agent/tests/acp.snapshot.ts
@@ -113,6 +113,7 @@ const SCENARIOS: Scenario[] = [
     name: 'session-query-spill',
     hasModelTurn: true,
     recorded: false,
+    overridden: true,
     pinsHeader: true,
     headerClass: 'session-query',
     configPath: SESSION_QUERY_CONFIG,
@@ -301,6 +302,7 @@ const SCENARIOS: Scenario[] = [
     recorded: true,
     pinsHeader: true,
     headerClass: 'sandbox',
+    systemPromptSource: 'text-turn',
     toolSchemasSource: 'text-turn',
     env: { DSH_PERMISSION_MODE: 'workspace-write' },
   },
diff --git a/examples/acp-agent/tests/goal-snapshots/goal-session/session.expected.jsonl b/examples/acp-agent/tests/goal-snapshots/goal-session/session.expected.jsonl
index cf51aed295..4d24c42596 100644
--- a/examples/acp-agent/tests/goal-snapshots/goal-session/session.expected.jsonl
+++ b/examples/acp-agent/tests/goal-snapshots/goal-session/session.expected.jsonl
@@ -2,53 +2,55 @@
 {"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Create a durable two-round goal for the ACP snapshot, inspect it, then report readiness."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"Create a durable two-round goal","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_goal_create","name":"create_goal","argumentsDelta":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}}}
-{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}}}}
-{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":20,"outputTokens":8}}}}
-{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
-{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}}
-{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_goal_create"},"content":[{"type":"tool-result","toolCallId":"call_goal_create","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":2},\"activation\":\"armed\"}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
-{"type":"user/message","seq":13,"time":0,"data":{"content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"active\",\"maxGoalRounds\":2},\"roundsStarted\":0,\"createdAt\":0,\"updatedAt\":0}"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":0,"change":{"kind":"goal/change","version":1,"operation":"create","goal":{"id":"goal-{{sessionId}}","revision":1,"objective":"Finish the ACP goal-session snapshot proof","phase":"active","maxGoalRounds":2},"roundsStarted":0,"createdAt":0,"updatedAt":0}},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
-{"type":"step/end","seq":14,"time":0,"data":{"turn":1,"step":1}}
-{"type":"step/start","seq":15,"time":0,"data":{"turn":1,"step":2}}
-{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"call_goal_get","name":"get_goal","argumentsDelta":"{}"}}}
-{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}}}}
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-{"type":"assistant/chunk","seq":20,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":21,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[16,17,18,19,20],"surfaceOp":"append"}
-{"type":"tool/call","seq":22,"time":0,"data":{"turn":1,"step":2,"callId":"call_goal_get","name":"get_goal","arguments":"{}"}}
-{"type":"tool/result","seq":23,"time":0,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_goal_get"},"content":[{"type":"tool-result","toolCallId":"call_goal_get","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":2},\"activation\":\"armed\"}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[22],"surfaceOp":"append"}
-{"type":"step/end","seq":24,"time":0,"data":{"turn":1,"step":2}}
-{"type":"step/start","seq":25,"time":0,"data":{"turn":1,"step":3}}
-{"type":"assistant/chunk","seq":26,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"text-delta","index":0,"text":"GOAL READY"}}}
-{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"GOAL READY"}}}}
-{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":35,"outputTokens":2}}}}
-{"type":"assistant/chunk","seq":30,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":31,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL READY"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":35,"outputTokens":2}},"sourceEventSeqs":[26,27,28,29,30],"surfaceOp":"append"}
-{"type":"step/end","seq":32,"time":0,"data":{"turn":1,"step":3}}
-{"type":"turn/end","seq":33,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
-{"type":"turn/start","seq":34,"time":0,"data":{"turn":2,"trigger":{"kind":"message","source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":1}}}}
-{"type":"user/message","seq":35,"time":0,"data":{"content":[{"type":"text","text":"\nObjective: \"Finish the ACP goal-session snapshot proof\"\nRound: 1/2\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":1},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
-{"type":"step/start","seq":36,"time":0,"data":{"turn":2,"step":1}}
-{"type":"assistant/chunk","seq":37,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"text-delta","index":0,"text":"GOAL ROUND ONE"}}}
-{"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"GOAL ROUND ONE"}}}}
-{"type":"assistant/chunk","seq":40,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":40,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":41,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":42,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL ROUND ONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":40,"outputTokens":3}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}
-{"type":"step/end","seq":43,"time":0,"data":{"turn":2,"step":1}}
-{"type":"turn/end","seq":44,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}
-{"type":"turn/start","seq":45,"time":0,"data":{"turn":3,"trigger":{"kind":"message","source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":2}}}}
-{"type":"user/message","seq":46,"time":0,"data":{"content":[{"type":"text","text":"\nObjective: \"Finish the ACP goal-session snapshot proof\"\nRound: 2/2\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":2},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
-{"type":"step/start","seq":47,"time":0,"data":{"turn":3,"step":1}}
-{"type":"assistant/chunk","seq":48,"time":0,"data":{"turn":3,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":49,"time":0,"data":{"turn":3,"step":1,"chunk":{"type":"text-delta","index":0,"text":"partial"}}}
-{"type":"step/end","seq":50,"time":0,"data":{"turn":3,"step":1}}
-{"type":"turn/end","seq":51,"time":0,"data":{"turn":3,"reason":{"kind":"aborted"}}}
-{"type":"user/message","seq":52,"time":0,"data":{"content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":2,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"paused\",\"maxGoalRounds\":2},\"roundsStarted\":2,\"createdAt\":0,\"updatedAt\":0}"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":2,"round":0,"change":{"kind":"goal/change","version":1,"operation":"pause","goal":{"id":"goal-{{sessionId}}","revision":2,"objective":"Finish the ACP goal-session snapshot proof","phase":"paused","maxGoalRounds":2},"roundsStarted":2,"createdAt":0,"updatedAt":0}},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
+{"type":"user/message","seq":3,"time":0,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
+{"type":"step/start","seq":4,"time":0,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":5,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":6,"time":0,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_goal_create","name":"create_goal","argumentsDelta":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}}}
+{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}}}}
+{"type":"assistant/chunk","seq":10,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":20,"outputTokens":8}}}}
+{"type":"assistant/chunk","seq":11,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":20,"outputTokens":8}},"sourceEventSeqs":[7,8,9,10,11],"surfaceOp":"append"}
+{"type":"tool/call","seq":13,"time":0,"data":{"turn":1,"step":1,"callId":"call_goal_create","name":"create_goal","arguments":"{\"objective\":\"Finish the ACP goal-session snapshot proof\",\"max_goal_rounds\":2}"}}
+{"type":"tool/result","seq":14,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_goal_create"},"content":[{"type":"tool-result","toolCallId":"call_goal_create","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":2},\"activation\":\"armed\"}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[13],"surfaceOp":"append"}
+{"type":"user/message","seq":15,"time":0,"data":{"content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"active\",\"maxGoalRounds\":2},\"roundsStarted\":0,\"createdAt\":0,\"updatedAt\":0}"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":0,"change":{"kind":"goal/change","version":1,"operation":"create","goal":{"id":"goal-{{sessionId}}","revision":1,"objective":"Finish the ACP goal-session snapshot proof","phase":"active","maxGoalRounds":2},"roundsStarted":0,"createdAt":0,"updatedAt":0}},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
+{"type":"step/end","seq":16,"time":0,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":17,"time":0,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"call_goal_get","name":"get_goal","argumentsDelta":"{}"}}}
+{"type":"assistant/chunk","seq":20,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}}}}
+{"type":"assistant/chunk","seq":21,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":30,"outputTokens":4}}}}
+{"type":"assistant/chunk","seq":22,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":23,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_goal_get","name":"get_goal","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":30,"outputTokens":4}},"sourceEventSeqs":[18,19,20,21,22],"surfaceOp":"append"}
+{"type":"tool/call","seq":24,"time":0,"data":{"turn":1,"step":2,"callId":"call_goal_get","name":"get_goal","arguments":"{}"}}
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+{"type":"step/end","seq":26,"time":0,"data":{"turn":1,"step":2}}
+{"type":"step/start","seq":27,"time":0,"data":{"turn":1,"step":3}}
+{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"text-delta","index":0,"text":"GOAL READY"}}}
+{"type":"assistant/chunk","seq":30,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"GOAL READY"}}}}
+{"type":"assistant/chunk","seq":31,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":35,"outputTokens":2}}}}
+{"type":"assistant/chunk","seq":32,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":33,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL READY"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":35,"outputTokens":2}},"sourceEventSeqs":[28,29,30,31,32],"surfaceOp":"append"}
+{"type":"step/end","seq":34,"time":0,"data":{"turn":1,"step":3}}
+{"type":"turn/end","seq":35,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"turn/start","seq":36,"time":0,"data":{"turn":2,"trigger":{"kind":"message","source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":1}}}}
+{"type":"user/message","seq":37,"time":0,"data":{"content":[{"type":"text","text":"\nObjective: \"Finish the ACP goal-session snapshot proof\"\nRound: 1/2\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":1},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
+{"type":"step/start","seq":38,"time":0,"data":{"turn":2,"step":1}}
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+{"type":"assistant/chunk","seq":40,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"text-delta","index":0,"text":"GOAL ROUND ONE"}}}
+{"type":"assistant/chunk","seq":41,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"GOAL ROUND ONE"}}}}
+{"type":"assistant/chunk","seq":42,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":40,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":43,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":44,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL ROUND ONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":40,"outputTokens":3}},"sourceEventSeqs":[39,40,41,42,43],"surfaceOp":"append"}
+{"type":"step/end","seq":45,"time":0,"data":{"turn":2,"step":1}}
+{"type":"turn/end","seq":46,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}
+{"type":"turn/start","seq":47,"time":0,"data":{"turn":3,"trigger":{"kind":"message","source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":2}}}}
+{"type":"user/message","seq":48,"time":0,"data":{"content":[{"type":"text","text":"\nObjective: \"Finish the ACP goal-session snapshot proof\"\nRound: 2/2\n\nContinue working toward the objective in this same session. Treat the current workspace, tool results, and durable session state as authoritative; inspect them instead of assuming earlier narration is still current. Make concrete progress and verify the result. Before claiming completion, gather evidence that the whole objective is achieved, read the current goal, and mark it complete. If work remains, leave the goal active for the next round. Follow the configured goal-tool policy before reporting a blocker.\n"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":1,"round":2},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
+{"type":"step/start","seq":49,"time":0,"data":{"turn":3,"step":1}}
+{"type":"assistant/chunk","seq":50,"time":0,"data":{"turn":3,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":51,"time":0,"data":{"turn":3,"step":1,"chunk":{"type":"text-delta","index":0,"text":"partial"}}}
+{"type":"step/end","seq":52,"time":0,"data":{"turn":3,"step":1}}
+{"type":"turn/end","seq":53,"time":0,"data":{"turn":3,"reason":{"kind":"aborted"}}}
+{"type":"user/message","seq":54,"time":0,"data":{"content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":2,\"objective\":\"Finish the ACP goal-session snapshot proof\",\"phase\":\"paused\",\"maxGoalRounds\":2},\"roundsStarted\":2,\"createdAt\":0,\"updatedAt\":0}"}],"source":{"kind":"goal","goalId":"goal-{{sessionId}}","revision":2,"round":0,"change":{"kind":"goal/change","version":1,"operation":"pause","goal":{"id":"goal-{{sessionId}}","revision":2,"objective":"Finish the ACP goal-session snapshot proof","phase":"paused","maxGoalRounds":2},"roundsStarted":2,"createdAt":0,"updatedAt":0}},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
diff --git a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.1.jsonl b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
index 7af9e3649a..1db28fb0a6 100644
--- a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
@@ -1,14 +1,16 @@
 {"type":"session","version":0,"id":"22222222-2222-4222-8222-222222222222","createdAt":1783950001000,"cwd":"{{cwd}}","parentSession":"11111111-1111-4111-8111-111111111111","delegationDepth":1}
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diff --git a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.2.jsonl b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
index 9b410dfd8a..db30c14d67 100644
--- a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
+++ b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
@@ -1,14 +1,16 @@
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diff --git a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl
index 95b261ac0f..7e3b752d11 100644
--- a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl
@@ -1,66 +1,68 @@
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-{"type":"assistant/chunk","seq":49,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}}
-{"type":"assistant/chunk","seq":50,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":51,"time":1785036891795,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":52,"time":1785036891796,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"9a70f646-ccbd-40a6-b593-39c2e1b21074"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[47,48,49,50,51],"surfaceOp":"append"}
-{"type":"tool/call","seq":53,"time":1785036891796,"data":{"turn":1,"step":5,"callId":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}
-{"type":"tool/result","seq":54,"time":1785036891798,"data":{"turn":1,"step":5,"message":{"source":{"kind":"tool","callId":"advanced-unmount"},"content":[{"type":"tool-result","toolCallId":"advanced-unmount","content":[{"type":"text","text":"Temporary Plugin dyn-1 was unmounted and removed."}],"isError":false}],"role":"user","id":"48bc35d1-5d43-431d-b7ed-caf148a1dbc3"}},"sourceEventSeqs":[53],"surfaceOp":"append"}
-{"type":"step/end","seq":55,"time":1785036891799,"data":{"turn":1,"step":5}}
-{"type":"step/start","seq":56,"time":1785036891801,"data":{"turn":1,"step":6}}
-{"type":"assistant/chunk","seq":57,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":58,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"text-delta","index":0,"text":"ADVANCED_ACP_OK"}}}
-{"type":"assistant/chunk","seq":59,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"ADVANCED_ACP_OK"}}}}
-{"type":"assistant/chunk","seq":60,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":61,"time":1785036891804,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":62,"time":1785036891804,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"ADVANCED_ACP_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"21ab8233-80fb-4d15-8155-c5ae967c70df"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[57,58,59,60,61],"surfaceOp":"append"}
-{"type":"step/end","seq":63,"time":1785036891806,"data":{"turn":1,"step":6}}
-{"type":"turn/end","seq":64,"time":1785036891806,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"user/message","seq":3,"time":1785464658979,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"e7b34e36-8267-4ced-884d-b430f8d7fdc6"},"surfaceOp":"append"}
+{"type":"step/start","seq":4,"time":1785464658979,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":5,"time":1785464658979,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":6,"time":1785487621044,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":7,"time":1783950000007,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":8,"time":1783950000008,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-mount","name":"cordis_mount","argumentsDelta":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}
+{"type":"assistant/chunk","seq":9,"time":1783950000009,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}}}
+{"type":"assistant/chunk","seq":10,"time":1785464658989,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":11,"time":1785487621053,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":12,"time":1785487621053,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"51e29fae-29ea-46af-9e9c-d636711048d2"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[7,8,9,10,11],"surfaceOp":"append"}
+{"type":"tool/call","seq":13,"time":1785487621053,"data":{"turn":1,"step":1,"callId":"advanced-mount","name":"cordis_mount","arguments":"{\"code\":\"return { name: 'snapshot-marker', apply() {} }\"}"}}
+{"type":"tool/result","seq":14,"time":1785487621063,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"advanced-mount"},"content":[{"type":"tool-result","toolCallId":"advanced-mount","content":[{"type":"text","text":"Temporary Plugin dyn-1 is running (plugin \"snapshot-marker\"; available until unmounted or DSH restarts)."}],"isError":false}],"role":"user","id":"6f09b45d-faeb-455c-bc74-ce21ae15e79e"}},"sourceEventSeqs":[13],"surfaceOp":"append"}
+{"type":"step/end","seq":15,"time":1785487621063,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":16,"time":1785487621072,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":17,"time":1783950000017,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":18,"time":1783950000018,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-code","name":"run_code","argumentsDelta":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}}}
+{"type":"assistant/chunk","seq":19,"time":1783950000019,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}}}}
+{"type":"assistant/chunk","seq":20,"time":1785464659011,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":21,"time":1785487621077,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":22,"time":1785487621077,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"4658a53d-fbb3-4df6-bee1-9556eccbb167"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[17,18,19,20,21],"surfaceOp":"append"}
+{"type":"tool/call","seq":23,"time":1785487621077,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.cordis_inspect({ what: 'temporary' })\", \"description\": \"Run the scripted inspection program\"}"}}
+{"type":"tool/code-dispatch-start","seq":24,"time":1785487621138,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"temporary"}}}
+{"type":"tool/code-dispatch","seq":25,"time":1785487621139,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"temporary"},"isError":false,"content":[{"type":"text","text":"## Temporary Plugins\n- Temporary Plugin dyn-1: snapshot-marker [running] — provides: none; waiting for: none; lifetime: until unmounted or DSH restarts"}]}}
+{"type":"tool/result","seq":26,"time":1785487621142,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"advanced-code"},"content":[{"type":"tool-result","toolCallId":"advanced-code","content":[{"type":"text","text":"## Temporary Plugins\n- Temporary Plugin dyn-1: snapshot-marker [running] — provides: none; waiting for: none; lifetime: until unmounted or DSH restarts"}],"isError":false}],"role":"user","id":"5bc61365-5fbc-4264-83da-f43c54c474f2"}},"sourceEventSeqs":[23],"surfaceOp":"append"}
+{"type":"step/end","seq":27,"time":1785487621142,"data":{"turn":1,"step":2}}
+{"type":"step/start","seq":28,"time":1785487621147,"data":{"turn":1,"step":3}}
+{"type":"assistant/chunk","seq":29,"time":1783950000029,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":30,"time":1783950000030,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-direct-child","name":"subagent","argumentsDelta":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}
+{"type":"assistant/chunk","seq":31,"time":1785036891179,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}}}
+{"type":"assistant/chunk","seq":32,"time":1785464659075,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":33,"time":1785487621152,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":34,"time":1785487621152,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"0102146b-afbd-4bd2-8323-10cedac7e09c"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[29,30,31,32,33],"surfaceOp":"append"}
+{"type":"tool/call","seq":35,"time":1785487621153,"data":{"turn":1,"step":3,"callId":"advanced-direct-child","name":"subagent","arguments":"{\"description\":\"Check direct child\",\"prompt\":\"Reply with exactly DIRECT_CHILD_OK and nothing else.\"}"}}
+{"type":"tool/result","seq":36,"time":1785487621188,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"advanced-direct-child"},"content":[{"type":"tool-result","toolCallId":"advanced-direct-child","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"isError":false}],"role":"user","id":"8cd6d887-1136-4e07-a9da-5a802455fbc2"}},"sourceEventSeqs":[35],"surfaceOp":"append"}
+{"type":"step/end","seq":37,"time":1785487621188,"data":{"turn":1,"step":3}}
+{"type":"step/start","seq":38,"time":1785487621196,"data":{"turn":1,"step":4}}
+{"type":"assistant/chunk","seq":39,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":40,"time":1783957884594,"data":{"turn":1,"step":4,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-workflow","name":"workflow","argumentsDelta":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}}
+{"type":"assistant/chunk","seq":41,"time":1785036891211,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}}}
+{"type":"assistant/chunk","seq":42,"time":1785464659132,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":43,"time":1785487621201,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":44,"time":1785487621202,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"3ec898d2-73da-4083-83c7-165839fd220b"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[39,40,41,42,43],"surfaceOp":"append"}
+{"type":"tool/call","seq":45,"time":1785487621202,"data":{"turn":1,"step":4,"callId":"advanced-workflow","name":"workflow","arguments":"{\"script\":\"phase('Delegate')\\nconst reply = await agent('Reply with exactly WORKFLOW_CHILD_OK and nothing else.', { label: 'workflow-child' })\\nreturn { reply }\",\"meta\":{\"name\":\"advanced-acp-snapshot\",\"description\":\"exercise one workflow child through ACP\"}}"}}
+{"type":"tool/result","seq":46,"time":1785487621356,"data":{"turn":1,"step":4,"message":{"source":{"kind":"tool","callId":"advanced-workflow"},"content":[{"type":"tool-result","toolCallId":"advanced-workflow","content":[{"type":"text","text":"workflow \"advanced-acp-snapshot\" completed (1 agent).\nReturn value:\n{\n  \"reply\": \"WORKFLOW_CHILD_OK\"\n}"}],"isError":false}],"role":"user","id":"61c5c122-4d5e-4241-8efe-3159a166050b"}},"sourceEventSeqs":[45],"surfaceOp":"append"}
+{"type":"step/end","seq":47,"time":1785487621356,"data":{"turn":1,"step":4}}
+{"type":"step/start","seq":48,"time":1785487621365,"data":{"turn":1,"step":5}}
+{"type":"assistant/chunk","seq":49,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":50,"time":1783957884719,"data":{"turn":1,"step":5,"chunk":{"type":"tool-call-delta","index":0,"id":"advanced-unmount","name":"cordis_unmount","argumentsDelta":"{\"id\":\"dyn-1\"}"}}}
+{"type":"assistant/chunk","seq":51,"time":1785036891795,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}}}
+{"type":"assistant/chunk","seq":52,"time":1785464659304,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":53,"time":1785487621370,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":54,"time":1785487621370,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"27d4f9ae-6c7e-4e48-bbe9-3e6f625c0767"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[49,50,51,52,53],"surfaceOp":"append"}
+{"type":"tool/call","seq":55,"time":1785487621370,"data":{"turn":1,"step":5,"callId":"advanced-unmount","name":"cordis_unmount","arguments":"{\"id\":\"dyn-1\"}"}}
+{"type":"tool/result","seq":56,"time":1785487621377,"data":{"turn":1,"step":5,"message":{"source":{"kind":"tool","callId":"advanced-unmount"},"content":[{"type":"tool-result","toolCallId":"advanced-unmount","content":[{"type":"text","text":"Temporary Plugin dyn-1 was unmounted and removed."}],"isError":false}],"role":"user","id":"aed1d952-b136-4707-968f-f281bf94d9e3"}},"sourceEventSeqs":[55],"surfaceOp":"append"}
+{"type":"step/end","seq":57,"time":1785487621377,"data":{"turn":1,"step":5}}
+{"type":"step/start","seq":58,"time":1785487621385,"data":{"turn":1,"step":6}}
+{"type":"assistant/chunk","seq":59,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":60,"time":1783957884720,"data":{"turn":1,"step":6,"chunk":{"type":"text-delta","index":0,"text":"ADVANCED_ACP_OK"}}}
+{"type":"assistant/chunk","seq":61,"time":1785036891804,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"ADVANCED_ACP_OK"}}}}
+{"type":"assistant/chunk","seq":62,"time":1785464659324,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":63,"time":1785487621391,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":64,"time":1785487621392,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"ADVANCED_ACP_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"ed857166-2e7d-4153-807f-d321a87c043e"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[59,60,61,62,63],"surfaceOp":"append"}
+{"type":"step/end","seq":65,"time":1785487621392,"data":{"turn":1,"step":6}}
+{"type":"turn/end","seq":66,"time":1785487621392,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/advanced-toolchain/system-prompt.expected.md b/examples/acp-agent/tests/snapshots/advanced-toolchain/system-prompt.expected.md
index 58a54a1509..97f0561a37 100644
--- a/examples/acp-agent/tests/snapshots/advanced-toolchain/system-prompt.expected.md
+++ b/examples/acp-agent/tests/snapshots/advanced-toolchain/system-prompt.expected.md
@@ -17,9 +17,6 @@ Track every background task id you start. You are notified in-session when a tas
 
 Use goal tools for one long-running completion objective in the current session. create_goal may infer goal intent from a direct human request in any language; do not create a goal for routine single-turn work. Call get_goal before update_goal and copy its exact goal_id and revision. After session resume or fork, an active goal is disarmed: when a human asks to continue or resume in any wording or language, use update_goal action resume to rearm it. Mark complete only when the objective is actually achieved. Mark blocked only after the same blocking condition persists for at least 3 consecutive goal rounds, and report that concrete condition in blocked_reason; difficulty, uncertainty, or useful remaining work is not blocked.
 
-Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
-
 Use the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.
 
 Use the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.
diff --git a/examples/acp-agent/tests/snapshots/bash-spill/session.jsonl b/examples/acp-agent/tests/snapshots/bash-spill/session.jsonl
index f195449e9e..fa8c2ce631 100644
--- a/examples/acp-agent/tests/snapshots/bash-spill/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/bash-spill/session.jsonl
@@ -1,24 +1,26 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":0,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Use the bash tool to print a large deterministic output, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"f4bbe58d-7866-403f-a9ea-c7f8f7d4b103"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Use the bash tool to print a large deterministic output, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"955895f6-6350-4083-b030-0f0ac825ad96"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"Use the bash tool to","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_spill","name":"bash","argumentsDelta":"{\"command\":\"node -e \\\"process.stdout.write('SPILL_START-' + 'x'.repeat(2000) + '-SPILL_END')\\\"\",\"description\":\"Print large deterministic output\"}"}}}
-{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_spill","name":"bash","arguments":"{\"command\":\"node -e \\\"process.stdout.write('SPILL_START-' + 'x'.repeat(2000) + '-SPILL_END')\\\"\",\"description\":\"Print large deterministic output\"}"}}}}
-{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
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diff --git a/examples/acp-agent/tests/snapshots/bash-tool-turn/session.jsonl b/examples/acp-agent/tests/snapshots/bash-tool-turn/session.jsonl
index c8146e20e6..aeb01cbcc6 100644
--- a/examples/acp-agent/tests/snapshots/bash-tool-turn/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl b/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl
index 77fd30a619..84ad554779 100644
--- a/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl b/examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl
index 464ca85bb3..5fe449ae48 100644
--- a/examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/cancel-tool-calls/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/cancel/session.jsonl b/examples/acp-agent/tests/snapshots/cancel/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl b/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl
index 5665f14e24..0824fbd0a1 100644
--- a/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/code-mode-turn/system-prompt.expected.md b/examples/acp-agent/tests/snapshots/code-mode-turn/system-prompt.expected.md
index 0cee2a6517..150c53d68e 100644
--- a/examples/acp-agent/tests/snapshots/code-mode-turn/system-prompt.expected.md
+++ b/examples/acp-agent/tests/snapshots/code-mode-turn/system-prompt.expected.md
@@ -17,9 +17,6 @@ Track every background task id you start. You are notified in-session when a tas
 
 Use goal tools for one long-running completion objective in the current session. create_goal may infer goal intent from a direct human request in any language; do not create a goal for routine single-turn work. Call get_goal before update_goal and copy its exact goal_id and revision. After session resume or fork, an active goal is disarmed: when a human asks to continue or resume in any wording or language, use update_goal action resume to rearm it. Mark complete only when the objective is actually achieved. Mark blocked only after the same blocking condition persists for at least 3 consecutive goal rounds, and report that concrete condition in blocked_reason; difficulty, uncertainty, or useful remaining work is not blocked.
 
-Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
-
 Use the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.
 
 Use the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.
diff --git a/examples/acp-agent/tests/snapshots/code-mode-workspace-context/session.jsonl b/examples/acp-agent/tests/snapshots/code-mode-workspace-context/session.jsonl
index bb65cea98d..d264b20da8 100644
--- a/examples/acp-agent/tests/snapshots/code-mode-workspace-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/code-mode-workspace-context/session.jsonl
@@ -1,34 +1,36 @@
 {"type":"session","version":0,"id":"b1e35a14-a592-44e6-bf23-b2496ad2bf7b","createdAt":1785014475001,"cwd":"{{cwd}}","delegationDepth":0}
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-{"type":"user/message","seq":1,"time":1785014475015,"data":{"content":[{"type":"text","text":"Using ONE run_code program, call tools.read on nested/task.txt. After the program finishes, answer the workspace handshake question using the newly discovered instructions: What is the Code Mode workspace handshake?"}],"source":{"kind":"user"},"role":"user","id":"6d0020b8-1a0e-489d-a2a2-7e820a403324"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1785014475015,"data":{"content":[{"type":"text","text":"Using ONE run_code program, call tools.read on nested/task.txt. After the program finishes, answer the workspace handshake question using the newly discovered instructions: What is the Code Mode workspace handshake?"}],"source":{"kind":"user"},"role":"user","id":"a5066d26-ed57-4f98-8672-b34e883e1299"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785014475022,"data":{"title":"Using ONE run_code program, call","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"user/message","seq":3,"time":1785122256262,"data":{"content":[{"type":"text","text":"\nThe following workspace instructions may be relevant to your work. Use them as guidance when applicable. More specific instructions take precedence over broader ones. They do not override system, developer, or direct user instructions.\n\nInstructions from: AGENTS.md\n\nWorkspace snapshot root instruction.\n\n"}],"source":{"kind":"workspace-instructions","baseline":true,"changes":[{"action":"set","scope":".\u0000AGENTS.md","path":"AGENTS.md","digest":"2119a7072358cc727f8d9c4cb7388e905b075fe6"}]},"role":"user","id":"d776a9c2-d256-493e-8b30-7dfd22a92754"},"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl b/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
index f5e564e729..43a87440a2 100644
--- a/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
@@ -1,34 +1,36 @@
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Restrictions\n     * intersect; scoped registrations remain visible.\n     * @param filter - global-surface mask: `allow` (keep only) and/or `deny` (remove).\n     * @returns the exact disposer that lifts this restriction.\n     */\n    restrict(filter: ToolRestriction): () => void\n    /**\n     * Register a monotonic guard after the extensible `tools/pre-execute`\n     * waterfall. A plain-context guard applies globally; one registered through\n     * `agent.ctx` applies only to that agent. Any matching guard may deny by\n     * returning a reason, while no guard can force-allow a call another guard\n     * denied. The exact effect disposer is returned for ordered ownership and\n     * HMR cleanup.\n     * @param guard - synchronous check; a returned string denies the execution.\n     * @returns the exact disposer that unregisters the guard.\n     */\n    guard(guard: ToolGuard): () => void\n    /**\n     * Look up a tool as one scope sees it (scoped\n     * shadows global; a restricted-away global reads as absent). Presenters pass\n     * the calling agent so the rendered card matches the definition that\n     * actually executed.\n     * @param name - the tool name as registered.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns the definition the scope resolves, or undefined when none is visible.\n     */\n    get(name: string, scope?: ScopeKey): ToolDefinition | undefined\n    /**\n     * Project visible definitions onto the allowlisted model-facing schema fields,\n     * excluding execution and presentation callbacks.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns one deep-cloned schema per visible tool.\n     */\n    schemas(scope?: ScopeKey): ToolSchema[]\n    /**\n     * Classify a pending call through the caller's visible tool definition. Only\n     * an exact `true` is parallel; unknown, hidden, undeclared, invalid, or\n     * throwing classifiers are exclusive.\n     * @param exec - call name, parsed arguments, and optional agent scope.\n     * @returns the fail-closed scheduling mode.\n     */\n    executionMode(exec: ToolExecutionInput): ToolExecutionMode\n    /**\n     * Execute through pre-policy, guards, around-dispatch, post-policy,\n     * definition-owned content finalization, and final notification. Tool and\n     * listener failures resolve as materialized error results; an invisible tool\n     * reports `UNKNOWN_TOOL`. The returned outcome is the same lossless, frozen\n     * snapshot final observers receive. Cancellation\n     * arriving after entry and before final result materialization skips a\n     * not-yet-started body with `ABORTED_BEFORE_DISPATCH` or replaces a\n     * successful started outcome with `ABORTED`; already-started work is still\n     * drained and may retain a tool-owned structured error.\n     * @param exec - the typed same-process call input. The registry assigns its\n     *   correlation token before policy begins.\n     * @returns the materialized final result.\n     */\n    async execute(exec: ToolExecutionInput): Promise\ntype shapes (referenced by the signatures above — read these before assuming a field is a string):\n    export interface Agent {\n        readonly id: SessionId;\n        readonly options: AgentOptions;\n        readonly session: Session;\n        readonly status: AgentStatus;\n        readonly acceptsNextStep: boolean;\n        readonly ctx: Context;\n        send(message: UserMessage, options: SendOptions): void;\n        reserveTurnAdmission(): (() => void) | undefined;\n        updateInbox(id: InboxItemId, action: InboxAction): InboxActionResult;\n        cancel(cause: AgentCancelCause, options?: CancelOptions): void;\n        whenIdle(): Promise;\n        followup(message: UserMessage): void;\n        steer(message: UserMessage): void;\n        inject(message: UserMessage): void;\n    }\n    export type AgentCancelCause = {\n        readonly kind: 'user';\n    } | {\n        readonly kind: 'parent';\n    };\n    export interface AgentOptions {\n        provider?: string;\n        model?: string;\n        maxTokens?: number;\n    }\n    export type AgentStatus = 'idle' | 'running';\n    export interface AssistantMessage extends Message {\n        readonly role: 'assistant';\n        readonly source: ModelMessageSource;\n    }\n    export interface AssistantProvenance {\n        provider: string;\n        model: string;\n        replayState?: unknown;\n    }\n    export type Branded = string & {\n        readonly [BRAND]: B;\n    };\n    export type CallId = Branded<'CallId'>;\n    export interface CancelOptions {\n        keepInbox?: boolean;\n    }\n    export interface ContentBlockMap {\n        'text': TextBlock;\n        'reasoning': ReasoningBlock;\n        'tool-call': ToolCallBlock;\n        'tool-result': ToolResultBlock;\n    }\n    export type ContentBlockType = keyof ContentBlockMap;\n    export interface DiffCallView {\n        card: 'diff';\n        title: string;\n        diffs: FileDiff[];\n        locations?: FileLocation[];\n    }\n    export interface DiffResultView {\n        card: 'diff';\n        title?: string;\n        diffs: FileDiff[];\n    }\n    export interface EpochHeader {\n        config: LlmCallConfig;\n        adapterDefaults?: LlmCallConfigAdapterDefaults;\n        system?: string;\n        tools?: ToolSchema[];\n    }\n    export interface FileDiff {\n        path: string;\n        oldText: string | null;\n        newText: string;\n    }\n    export interface FileLocation {\n        path: string;\n        line?: number;\n    }\n    export type FinishReason = FinishReasonMap[keyof FinishReasonMap];\n    export interface FinishReasonMap {\n        'stop': {\n            kind: 'stop';\n        };\n        'tool-calls': {\n            kind: 'tool-calls';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        'aborted': {\n            kind: 'aborted';\n            failure: LlmFailure;\n        };\n        'error': {\n            kind: 'error';\n            failure: LlmFailure;\n        };\n    }\n    export interface GenericCallView {\n        card: 'generic';\n        title: string;\n        kind?: ToolCallKind;\n        rawInput?: unknown;\n        content?: ContentBlock[];\n        locations?: FileLocation[];\n    }\n    export interface GenericResultView {\n        card: 'generic';\n        title?: string;\n        content?: ContentBlock[];\n    }\n    export type InboxAction = {\n        readonly kind: 'edit';\n        readonly content: ContentBlock[];\n    } | {\n        readonly kind: 'remove';\n    };\n    export type InboxActionResult = 'applied' | 'not-found';\n    export type InboxItemId = Branded<'InboxItemId'>;\n    export interface JsonSchemaNode {\n        type?: JsonSchemaType;\n        oneOf?: JsonSchemaNode[];\n        properties?: Record;\n        required?: string[];\n        additionalProperties?: boolean;\n        items?: JsonSchemaNode;\n        enum?: JsonSchemaScalar[];\n        const?: JsonSchemaScalar;\n        description?: string;\n        title?: string;\n        default?: JsonValue;\n        examples?: JsonValue;\n    }\n    export type JsonSchemaScalar = string | number | boolean | null;\n    export type JsonSchemaType = 'object' | 'array' | 'string' | 'number' | 'integer' | 'boolean' | 'null';\n    export type JsonValue = null | boolean | number | string | JsonValue[] | {\n        [key: string]: JsonValue;\n    };\n    export interface LlmCallConfig {\n        provider: string;\n        model: string;\n        reasoningEffort?: ReasoningEffortId;\n        temperature?: number;\n        maxTokens?: number;\n        stop?: string[];\n    }\n    export interface LlmCallConfigAdapterDefaults {\n        reasoningEffort?: true;\n        maxTokens?: true;\n    }\n    export interface LlmFailure {\n        readonly message: string;\n        readonly code: string;\n        readonly status?: number;\n        readonly providerRetryAfterMs?: number;\n        readonly requestId?: ProviderRequestId;\n    }\n    export interface Message {\n        readonly id: MessageId;\n        readonly role: 'system' | 'user' | 'assistant';\n        readonly content: ContentBlock[];\n        readonly source: MessageSource;\n    }\n    export type MessageId = Branded<'MessageId'>;\n    export type MessageSource = MessageSourceMap[keyof MessageSourceMap];\n    export interface MessageSourceMap {\n        user: {\n            kind: 'user';\n        };\n        plugin: {\n            kind: 'plugin';\n            plugin: string;\n        };\n        model: ModelMessageSource;\n        tool: ToolMessageSource;\n    }\n    export interface ModelMessageSource extends AssistantProvenance {\n        kind: 'model';\n    }\n    export type ProviderRequestId = Branded<'ProviderRequestId'>;\n    export interface ReadFileLine {\n        number: number;\n        text: string;\n    }\n    export interface ReadResultView {\n        card: 'read';\n        title?: string;\n        path: string;\n        offset: number;\n        lines: ReadFileLine[];\n        totalLines: number;\n        lang?: string;\n        content?: ContentBlock[];\n    }\n    export interface ReasoningBlock {\n        type: 'reasoning';\n        text: string;\n    }\n    export type ReasoningEffortId = Branded<'ReasoningEffortId'>;\n    export type RequestHeaderReason = 'initial' | 'resume' | 'change';\n    export type ScopeKey = object;\n    export interface SearchFileMatches {\n        path: string;\n        matches: SearchLineMatch[];\n    }\n    export interface SearchLineMatch {\n        lineNumber: number;\n        line: string;\n    }\n    export interface SearchMatchesResultView {\n        card: 'search';\n        shape: 'matches';\n        title?: string;\n        files: SearchFileMatches[];\n        truncated: boolean;\n        total: number;\n    }\n    export interface SearchPathsResultView {\n        card: 'search';\n        shape: 'paths';\n        title?: string;\n        paths: string[];\n        truncated: boolean;\n        total: number;\n    }\n    export type SearchResultView = SearchMatchesResultView | SearchPathsResultView;\n    export interface SendOptions {\n        target: SendTarget;\n        wakeup: boolean;\n    }\n    export type SendTarget = 'next-turn' | 'next-step';\n    export class Session {\n        get surface(): SessionSurface;\n        readonly header: SessionHeader;\n        get id(): SessionId;\n        readonly firstLiveSeq: number;\n        constructor(id: SessionId, seed?: readonly SessionEvent[], header?: SessionHeader);\n        get events(): readonly SessionEvent[];\n        get seq(): number;\n        append(type: T, data: SessionEventMap[T], ...opts: T extends SurfaceEventType ? [\n            opts: SurfaceIntent\n        ] : [\n        ]): SessionEvent;\n        requestHeader(): EpochHeader | undefined;\n        deriveMessages(): Message[];\n        deriveEventMessage(event: SessionEvent): Message | null;\n    }\n    export type SessionEvent = {\n        [K in SessionEventType]: {\n            type: K;\n            seq: number;\n            time: number;\n            data: SessionEventMap[K];\n        } & (K extends SurfaceEventType ? {\n            sourceEventSeqs?: number[];\n            surfaceOp?: SurfaceOp;\n        } : object);\n    }[T];\n    export interface SessionEventMap {\n        'turn/start': {\n            turn: number;\n            trigger: TurnTrigger;\n        };\n        'turn/end': {\n            turn: number;\n            reason: TurnEndReason;\n        };\n        'step/start': {\n            turn: number;\n            step: number;\n        };\n        'step/end': {\n            turn: number;\n            step: number;\n        };\n        'user/message': UserMessage;\n        'assistant/chunk': {\n            turn: number;\n            step: number;\n            chunk: StreamChunk;\n        };\n        'assistant/message': {\n            turn: number;\n            step: number;\n            message: AssistantMessage;\n            usage?: TokenUsage;\n        };\n        'tool/call': {\n            turn: number;\n            step: number;\n            callId: CallId;\n            name: string;\n            arguments: string;\n        };\n        'tool/result': {\n            turn: number;\n            step: number;\n            message: ToolResultMessage;\n            error?: {\n                name: string;\n                code: string;\n            };\n            meta?: JsonValue;\n        };\n        'steering/message': {\n            turn: number;\n            message: UserMessage;\n        };\n        'todo/write': {\n            todos: TodoItem[];\n        };\n        'request/header': {\n            header: EpochHeader;\n            reason: RequestHeaderReason;\n        };\n        'session/end-seed': Record;\n    }\n    export type SessionEventType = keyof SessionEventMap;\n    export interface SessionHeader {\n        readonly version: number;\n        readonly id: SessionId;\n        readonly createdAt: number;\n        readonly cwd?: string;\n        readonly parentSession?: SessionId;\n        readonly seedLength?: number;\n        readonly delegationDepth?: number;\n    }\n    export type SessionId = Branded<'SessionId'>;\n    export interface SessionSurface {\n        readonly nodes: readonly number[];\n        readonly replaceGeneration: number;\n    }\n    export type StreamChunk = {\n        type: 'block-start';\n        index: number;\n        blockType: ContentBlockType;\n    } | {\n        type: 'text-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'reasoning-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'tool-call-delta';\n        index: number;\n        id: CallId;\n        name?: string;\n        argumentsDelta: string;\n    } | {\n        type: 'block-end';\n        index: number;\n        block: ContentBlock;\n    } | {\n        type: 'usage';\n        usage: TokenUsage;\n    } | {\n        type: 'finish';\n        reason: FinishReason;\n        replayState?: unknown;\n    };\n    export type SurfaceEventType = 'user/message' | 'assistant/message' | 'tool/result' | 'steering/message';\n    export interface SurfaceIntent {\n        surfaceOp: SurfaceOp;\n        sourceEventSeqs?: number[];\n    }\n    export type SurfaceOp = 'append' | {\n        op: 'replace';\n        start: number;\n        end: number;\n    };\n    export interface TerminalCallView {\n        card: 'terminal';\n        title: string;\n        description?: string;\n        cwd?: string;\n    }\n    export interface TerminalResultView {\n        card: 'terminal';\n        title?: string;\n        output?: string;\n        exitCode?: number;\n        signal?: string;\n    }\n    export interface TodoItem {\n        content: string;\n        status: 'pending' | 'in_progress' | 'completed';\n    }\n    export interface TokenUsage {\n        inputTokens: number;\n        outputTokens: number;\n        cacheReadTokens?: number;\n        cacheWriteTokens?: number;\n        reasoningTokens?: number;\n    }\n    export interface ToolCallBlock {\n        type: 'tool-call';\n        id: CallId;\n        name: string;\n        arguments: string;\n    }\n    export type ToolCallKind = 'read' | 'edit' | 'delete' | 'move' | 'search' | 'execute' | 'fetch' | 'other';\n    export type ToolCallView = GenericCallView | TerminalCallView | DiffCallView;\n    export interface ToolDefinition extends ToolSchema {\n        readonly output: ToolOutputDefinition;\n        execute(args: unknown, exec: ToolRunContext): Promise;\n        finalizeContent?(exec: Readonly, result: Readonly): ContentBlock[] | undefined;\n        timeoutMs?: number;\n        isConcurrencySafe?(args: unknown): boolean;\n        presentCall?(args: unknown): ToolCallView | undefined;\n        presentResult?(args: unknown, result: ToolResult): ToolResultView | undefined;\n    }\n    export interface ToolErrorInfo {\n        name: string;\n        code: string;\n    }\n    export interface ToolExecution extends ToolExecutionInput {\n        readonly token: ToolExecutionToken;\n    }\n    export interface ToolExecutionFailure {\n        readonly isError: true;\n        readonly error: ToolFailure;\n        readonly value?: never;\n        readonly content: ContentBlock[];\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: never;\n    }\n    export interface ToolExecutionInput {\n        readonly callId: CallId;\n        readonly name: string;\n        readonly arguments: unknown;\n        readonly agent?: Agent;\n        readonly parent?: ToolExecutionToken;\n        readonly signal: AbortSignal;\n    }\n    export type ToolExecutionMode = {\n        kind: 'parallel';\n    } | {\n        kind: 'exclusive';\n    };\n    export type ToolExecutionResult = ToolExecutionSuccess | ToolExecutionFailure;\n    export interface ToolExecutionSuccess {\n        readonly isError: false;\n        readonly value: JsonValue;\n        readonly content: ContentBlock[];\n        readonly error?: never;\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: true;\n    }\n    export type ToolExecutionToken = symbol & {\n        readonly [toolExecutionTokenBrand]: true;\n    };\n    export interface ToolFailure {\n        message: string;\n        info?: ToolErrorInfo;\n    }\n    export type ToolGuard = (execution: Readonly) => string | undefined;\n    export interface ToolMessageSource {\n        kind: 'tool';\n        callId: CallId;\n    }\n    export interface ToolOutputDefinition {\n        readonly schema: JsonSchemaNode;\n        render(args: unknown, value: JsonValue): ContentBlock[];\n        presentationMeta?(args: unknown, value: JsonValue): JsonValue;\n    }\n    export interface ToolRestriction {\n        readonly allow?: readonly string[];\n        readonly deny?: readonly string[];\n    }\n    export interface ToolResult {\n        content: ContentBlock[];\n        isError: boolean;\n        meta?: JsonValue;\n    }\n    export interface ToolResultBlock {\n        type: 'tool-result';\n        toolCallId: CallId;\n        content: ContentBlock[];\n        isError?: boolean;\n    }\n    export interface ToolResultMessage extends Message {\n        readonly role: 'user';\n        readonly content: [\n            ToolResultBlock\n        ];\n        readonly source: ToolMessageSource;\n    }\n    export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView | SearchResultView | ReadResultView | WebResultView;\n    export interface ToolRunContext extends ToolExecution {\n        deferContext(context: UserMessage): void;\n        concludeTurn(): void;\n    }\n    export interface ToolSchema {\n        name: string;\n        description: string;\n        parameters: Record;\n    }\n    export type TurnEndReason = TurnEndReasonMap[keyof TurnEndReasonMap];\n    export interface TurnEndReasonMap {\n        completed: {\n            kind: 'completed';\n        };\n        aborted: {\n            kind: 'aborted';\n        };\n        error: {\n            kind: 'error';\n            step: number;\n        } & ({\n            failure: LlmFailure;\n            message?: never;\n            code?: never;\n        } | {\n            message: string;\n            code?: string;\n            failure?: never;\n        });\n        disposed: {\n            kind: 'disposed';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        interrupted: {\n            kind: 'interrupted';\n        };\n    }\n    export type TurnTrigger = TurnTriggerMap[keyof TurnTriggerMap];\n    export interface TurnTriggerMap {\n        message: {\n            kind: 'message';\n            source: MessageSource;\n        };\n        retry: {\n            kind: 'retry';\n        };\n        injection: {\n            kind: 'injection';\n            source: MessageSource;\n        };\n    }\n    export interface UserMessage extends Message {\n        readonly role: 'user';\n    }\n    export interface WebFetchResultView {\n        card: 'web';\n        kind: 'fetch';\n        title?: string;\n        url: string;\n        statusCode: number;\n        truncated: boolean;\n    }\n    export type WebResultView = WebSearchResultView | WebFetchResultView;\n    export interface WebSearchResultView {\n        card: 'web';\n        kind: 'search';\n        title?: string;\n        sources: WebSource[];\n        answer?: string;\n        truncated: boolean;\n    }\n    export interface WebSource {\n        url: string;\n        title?: string;\n        snippet?: string;\n        publishedAt?: string;\n    }"}],"isError":false}],"role":"user","id":"1c43b8df-aae8-42e7-8253-5b275edc09bc"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
-{"type":"step/end","seq":13,"time":1784449176732,"data":{"turn":1,"step":1}}
-{"type":"step/start","seq":14,"time":1784449176733,"data":{"turn":1,"step":2}}
-{"type":"assistant/chunk","seq":15,"time":1783951000015,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":16,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"inspect-tools-event","name":"cordis_inspect","argumentsDelta":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}}}
-{"type":"assistant/chunk","seq":17,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}}}}
-{"type":"assistant/chunk","seq":18,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":19,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":20,"time":1784449176734,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"ac4f1e8d-a168-4f18-89a5-b339ae370eb9"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
-{"type":"tool/call","seq":21,"time":1784449176734,"data":{"turn":1,"step":2,"callId":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}}
-{"type":"tool/result","seq":22,"time":1784449176734,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"inspect-tools-event"},"content":[{"type":"tool-result","toolCallId":"inspect-tools-event","content":[{"type":"text","text":"## events\n- tools/pre-execute [waterfall] — Allow, deny, or ask before dispatch.\n    /**\n     * Allow, deny, or ask before dispatch. `next()` delegates to allow; missing\n     * approval support turns `ask` into denial. Async gates must observe\n     * `exec.signal`; the registry rechecks cancellation after they settle but\n     * never abandons their promise.\n     * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent's calls.\n     * @param exec - the pending call (name, parsed arguments, caller agent).\n     * @mode waterfall\n     */\n    'tools/pre-execute'(this: Scoped, exec: ToolExecution, next: () => Promise): Promise\nwaterfall listeners receive a trailing next() and MUST call it to delegate — returning without next() vetoes the chain."}],"isError":false}],"role":"user","id":"ddafa6d8-dbed-4208-8503-8efeea920bb5"}},"sourceEventSeqs":[21],"surfaceOp":"append"}
-{"type":"step/end","seq":23,"time":1784449176734,"data":{"turn":1,"step":2}}
-{"type":"step/start","seq":24,"time":1784449176735,"data":{"turn":1,"step":3}}
-{"type":"assistant/chunk","seq":25,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":26,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"text-delta","index":0,"text":"CORDIS_INSPECT_JSDOC_OK"}}}
-{"type":"assistant/chunk","seq":27,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"CORDIS_INSPECT_JSDOC_OK"}}}}
-{"type":"assistant/chunk","seq":28,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":29,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":30,"time":1784449176735,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"CORDIS_INSPECT_JSDOC_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"e47e2ca6-b138-408a-b75b-6273b1552406"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
-{"type":"step/end","seq":31,"time":1784449176735,"data":{"turn":1,"step":3}}
-{"type":"turn/end","seq":32,"time":1784449176735,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"user/message","seq":3,"time":1785464660111,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"2a0e707e-4fd1-4e60-b610-18518bb8011b"},"surfaceOp":"append"}
+{"type":"step/start","seq":4,"time":1785464660111,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":5,"time":1785464660112,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":6,"time":1785487622694,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":7,"time":1783951000007,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":8,"time":1783951000008,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"inspect-tools-api","name":"cordis_inspect","argumentsDelta":"{\"what\":\"api\",\"name\":\"tools\"}"}}}
+{"type":"assistant/chunk","seq":9,"time":1783951000009,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"inspect-tools-api","name":"cordis_inspect","arguments":"{\"what\":\"api\",\"name\":\"tools\"}"}}}}
+{"type":"assistant/chunk","seq":10,"time":1785464660123,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":11,"time":1785487622703,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":12,"time":1785487622703,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"inspect-tools-api","name":"cordis_inspect","arguments":"{\"what\":\"api\",\"name\":\"tools\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"7c207b09-7f6e-4e53-a5d2-77e0d2bbb474"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[7,8,9,10,11],"surfaceOp":"append"}
+{"type":"tool/call","seq":13,"time":1785487622703,"data":{"turn":1,"step":1,"callId":"inspect-tools-api","name":"cordis_inspect","arguments":"{\"what\":\"api\",\"name\":\"tools\"}"}}
+{"type":"tool/result","seq":14,"time":1785487622726,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"inspect-tools-api"},"content":[{"type":"tool-result","toolCallId":"inspect-tools-api","content":[{"type":"text","text":"## api\n- tools — Tool registry and execution pipeline.\n    /**\n     * Register globally or in the calling agent scope. Scoped tools shadow\n     * globals; duplicates within one layer and the reserved `run_code` name fail.\n     * @param definition - tool schema, execution, and optional finalization/presentation callbacks.\n     * @returns the exact disposer that unregisters the tool.\n     */\n    register(definition: ToolDefinition): () => void\n    /**\n     * Restrict global tools for the calling agent scope. Empty filters, unknown\n     * names, scope-local names, and reserved transport names fail. Restrictions\n     * intersect; scoped registrations remain visible.\n     * @param filter - global-surface mask: `allow` (keep only) and/or `deny` (remove).\n     * @returns the exact disposer that lifts this restriction.\n     */\n    restrict(filter: ToolRestriction): () => void\n    /**\n     * Register a monotonic guard after the extensible `tools/pre-execute`\n     * waterfall. A plain-context guard applies globally; one registered through\n     * `agent.ctx` applies only to that agent. Any matching guard may deny by\n     * returning a reason, while no guard can force-allow a call another guard\n     * denied. The exact effect disposer is returned for ordered ownership and\n     * HMR cleanup.\n     * @param guard - synchronous check; a returned string denies the execution.\n     * @returns the exact disposer that unregisters the guard.\n     */\n    guard(guard: ToolGuard): () => void\n    /**\n     * Look up a tool as one scope sees it (scoped\n     * shadows global; a restricted-away global reads as absent). Presenters pass\n     * the calling agent so the rendered card matches the definition that\n     * actually executed.\n     * @param name - the tool name as registered.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns the definition the scope resolves, or undefined when none is visible.\n     */\n    get(name: string, scope?: ScopeKey): ToolDefinition | undefined\n    /**\n     * Project visible definitions onto the allowlisted model-facing schema fields,\n     * excluding execution and presentation callbacks.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns one deep-cloned schema per visible tool.\n     */\n    schemas(scope?: ScopeKey): ToolSchema[]\n    /**\n     * Classify a pending call through the caller's visible tool definition. Only\n     * an exact `true` is parallel; unknown, hidden, undeclared, invalid, or\n     * throwing classifiers are exclusive.\n     * @param exec - call name, parsed arguments, and optional agent scope.\n     * @returns the fail-closed scheduling mode.\n     */\n    executionMode(exec: ToolExecutionInput): ToolExecutionMode\n    /**\n     * Execute through pre-policy, guards, around-dispatch, post-policy,\n     * definition-owned content finalization, and final notification. Tool and\n     * listener failures resolve as materialized error results; an invisible tool\n     * reports `UNKNOWN_TOOL`. The returned outcome is the same lossless, frozen\n     * snapshot final observers receive. Cancellation\n     * arriving after entry and before final result materialization skips a\n     * not-yet-started body with `ABORTED_BEFORE_DISPATCH` or replaces a\n     * successful started outcome with `ABORTED`; already-started work is still\n     * drained and may retain a tool-owned structured error.\n     * @param exec - the typed same-process call input. The registry assigns its\n     *   correlation token before policy begins.\n     * @returns the materialized final result.\n     */\n    async execute(exec: ToolExecutionInput): Promise\ntype shapes (referenced by the signatures above — read these before assuming a field is a string):\n    export interface Agent {\n        readonly id: SessionId;\n        readonly options: AgentOptions;\n        readonly session: Session;\n        readonly status: AgentStatus;\n        readonly acceptsNextStep: boolean;\n        readonly ctx: Context;\n        send(message: UserMessage, options: SendOptions): void;\n        reserveTurnAdmission(): (() => void) | undefined;\n        updateInbox(id: InboxItemId, action: InboxAction): InboxActionResult;\n        cancel(cause: AgentCancelCause, options?: CancelOptions): void;\n        whenIdle(): Promise;\n        followup(message: UserMessage): void;\n        steer(message: UserMessage): void;\n        inject(message: UserMessage): void;\n    }\n    export type AgentCancelCause = {\n        readonly kind: 'user';\n    } | {\n        readonly kind: 'parent';\n    };\n    export interface AgentOptions {\n        provider?: string;\n        model?: string;\n        maxTokens?: number;\n    }\n    export type AgentStatus = 'idle' | 'running';\n    export interface AssistantMessage extends Message {\n        readonly role: 'assistant';\n        readonly source: ModelMessageSource;\n    }\n    export interface AssistantProvenance {\n        provider: string;\n        model: string;\n        replayState?: unknown;\n    }\n    export type Branded = string & {\n        readonly [BRAND]: B;\n    };\n    export type CallId = Branded<'CallId'>;\n    export interface CancelOptions {\n        keepInbox?: boolean;\n    }\n    export interface ContentBlockMap {\n        'text': TextBlock;\n        'reasoning': ReasoningBlock;\n        'tool-call': ToolCallBlock;\n        'tool-result': ToolResultBlock;\n    }\n    export type ContentBlockType = keyof ContentBlockMap;\n    export interface DiffCallView {\n        card: 'diff';\n        title: string;\n        diffs: FileDiff[];\n        locations?: FileLocation[];\n    }\n    export interface DiffResultView {\n        card: 'diff';\n        title?: string;\n        diffs: FileDiff[];\n    }\n    export interface EpochHeader {\n        config: LlmCallConfig;\n        adapterDefaults?: LlmCallConfigAdapterDefaults;\n        system?: string;\n        tools?: ToolSchema[];\n    }\n    export interface FileDiff {\n        path: string;\n        oldText: string | null;\n        newText: string;\n    }\n    export interface FileLocation {\n        path: string;\n        line?: number;\n    }\n    export type FinishReason = FinishReasonMap[keyof FinishReasonMap];\n    export interface FinishReasonMap {\n        'stop': {\n            kind: 'stop';\n        };\n        'tool-calls': {\n            kind: 'tool-calls';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        'aborted': {\n            kind: 'aborted';\n            failure: LlmFailure;\n        };\n        'error': {\n            kind: 'error';\n            failure: LlmFailure;\n        };\n    }\n    export interface GenericCallView {\n        card: 'generic';\n        title: string;\n        kind?: ToolCallKind;\n        rawInput?: unknown;\n        content?: ContentBlock[];\n        locations?: FileLocation[];\n    }\n    export interface GenericResultView {\n        card: 'generic';\n        title?: string;\n        content?: ContentBlock[];\n    }\n    export type InboxAction = {\n        readonly kind: 'edit';\n        readonly content: ContentBlock[];\n    } | {\n        readonly kind: 'remove';\n    };\n    export type InboxActionResult = 'applied' | 'not-found';\n    export type InboxItemId = Branded<'InboxItemId'>;\n    export interface JsonSchemaNode {\n        type?: JsonSchemaType;\n        oneOf?: JsonSchemaNode[];\n        properties?: Record;\n        required?: string[];\n        additionalProperties?: boolean;\n        items?: JsonSchemaNode;\n        enum?: JsonSchemaScalar[];\n        const?: JsonSchemaScalar;\n        description?: string;\n        title?: string;\n        default?: JsonValue;\n        examples?: JsonValue;\n    }\n    export type JsonSchemaScalar = string | number | boolean | null;\n    export type JsonSchemaType = 'object' | 'array' | 'string' | 'number' | 'integer' | 'boolean' | 'null';\n    export type JsonValue = null | boolean | number | string | JsonValue[] | {\n        [key: string]: JsonValue;\n    };\n    export interface LlmCallConfig {\n        provider: string;\n        model: string;\n        reasoningEffort?: ReasoningEffortId;\n        temperature?: number;\n        maxTokens?: number;\n        stop?: string[];\n    }\n    export interface LlmCallConfigAdapterDefaults {\n        reasoningEffort?: true;\n        maxTokens?: true;\n    }\n    export interface LlmFailure {\n        readonly message: string;\n        readonly code: string;\n        readonly status?: number;\n        readonly providerRetryAfterMs?: number;\n        readonly requestId?: ProviderRequestId;\n    }\n    export interface Message {\n        readonly id: MessageId;\n        readonly role: 'system' | 'user' | 'assistant';\n        readonly content: ContentBlock[];\n        readonly source: MessageSource;\n    }\n    export type MessageId = Branded<'MessageId'>;\n    export type MessageSource = MessageSourceMap[keyof MessageSourceMap];\n    export interface MessageSourceMap {\n        user: {\n            kind: 'user';\n        };\n        plugin: {\n            kind: 'plugin';\n            plugin: string;\n        };\n        model: ModelMessageSource;\n        tool: ToolMessageSource;\n    }\n    export interface ModelMessageSource extends AssistantProvenance {\n        kind: 'model';\n    }\n    export type ProviderRequestId = Branded<'ProviderRequestId'>;\n    export interface ReadFileLine {\n        number: number;\n        text: string;\n    }\n    export interface ReadResultView {\n        card: 'read';\n        title?: string;\n        path: string;\n        offset: number;\n        lines: ReadFileLine[];\n        totalLines: number;\n        lang?: string;\n        content?: ContentBlock[];\n    }\n    export interface ReasoningBlock {\n        type: 'reasoning';\n        text: string;\n    }\n    export type ReasoningEffortId = Branded<'ReasoningEffortId'>;\n    export interface RequestContext {\n        provider: string;\n        model: string;\n        contextWindow?: number;\n    }\n    export type RequestHeaderReason = 'initial' | 'resume' | 'change';\n    export type ScopeKey = object;\n    export interface SearchFileMatches {\n        path: string;\n        matches: SearchLineMatch[];\n    }\n    export interface SearchLineMatch {\n        lineNumber: number;\n        line: string;\n    }\n    export interface SearchMatchesResultView {\n        card: 'search';\n        shape: 'matches';\n        title?: string;\n        files: SearchFileMatches[];\n        truncated: boolean;\n        total: number;\n    }\n    export interface SearchPathsResultView {\n        card: 'search';\n        shape: 'paths';\n        title?: string;\n        paths: string[];\n        truncated: boolean;\n        total: number;\n    }\n    export type SearchResultView = SearchMatchesResultView | SearchPathsResultView;\n    export interface SendOptions {\n        target: SendTarget;\n        wakeup: boolean;\n    }\n    export type SendTarget = 'next-turn' | 'next-step';\n    export class Session {\n        get surface(): SessionSurface;\n        readonly header: SessionHeader;\n        get id(): SessionId;\n        readonly firstLiveSeq: number;\n        constructor(id: SessionId, seed?: readonly SessionEvent[], header?: SessionHeader);\n        get events(): readonly SessionEvent[];\n        get seq(): number;\n        append(type: T, data: SessionEventMap[T], ...opts: T extends SurfaceEventType ? [\n            opts: SurfaceIntent\n        ] : [\n        ]): SessionEvent;\n        requestHeader(): EpochHeader | undefined;\n        requestContext(): RequestContext | undefined;\n        deriveMessages(): Message[];\n        deriveEventMessage(event: SessionEvent): Message | null;\n    }\n    export type SessionEvent = {\n        [K in SessionEventType]: {\n            type: K;\n            seq: number;\n            time: number;\n            data: SessionEventMap[K];\n        } & (K extends SurfaceEventType ? {\n            sourceEventSeqs?: number[];\n            surfaceOp?: SurfaceOp;\n        } : object);\n    }[T];\n    export interface SessionEventMap {\n        'turn/start': {\n            turn: number;\n            trigger: TurnTrigger;\n        };\n        'turn/end': {\n            turn: number;\n            reason: TurnEndReason;\n        };\n        'step/start': {\n            turn: number;\n            step: number;\n        };\n        'step/end': {\n            turn: number;\n            step: number;\n        };\n        'user/message': UserMessage;\n        'assistant/chunk': {\n            turn: number;\n            step: number;\n            chunk: StreamChunk;\n        };\n        'assistant/message': {\n            turn: number;\n            step: number;\n            message: AssistantMessage;\n            usage?: TokenUsage;\n        };\n        'tool/call': {\n            turn: number;\n            step: number;\n            callId: CallId;\n            name: string;\n            arguments: string;\n        };\n        'tool/result': {\n            turn: number;\n            step: number;\n            message: ToolResultMessage;\n            error?: {\n                name: string;\n                code: string;\n            };\n            meta?: JsonValue;\n        };\n        'steering/message': {\n            turn: number;\n            message: UserMessage;\n        };\n        'todo/write': {\n            todos: TodoItem[];\n        };\n        'request/header': {\n            header: EpochHeader;\n            reason: RequestHeaderReason;\n        };\n        'request/context': RequestContext;\n        'session/end-seed': Record;\n    }\n    export type SessionEventType = keyof SessionEventMap;\n    export interface SessionHeader {\n        readonly version: number;\n        readonly id: SessionId;\n        readonly createdAt: number;\n        readonly cwd?: string;\n        readonly parentSession?: SessionId;\n        readonly seedLength?: number;\n        readonly delegationDepth?: number;\n    }\n    export type SessionId = Branded<'SessionId'>;\n    export interface SessionSurface {\n        readonly nodes: readonly number[];\n        readonly replaceGeneration: number;\n    }\n    export type StreamChunk = {\n        type: 'block-start';\n        index: number;\n        blockType: ContentBlockType;\n    } | {\n        type: 'text-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'reasoning-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'tool-call-delta';\n        index: number;\n        id: CallId;\n        name?: string;\n        argumentsDelta: string;\n    } | {\n        type: 'block-end';\n        index: number;\n        block: ContentBlock;\n    } | {\n        type: 'usage';\n        usage: TokenUsage;\n    } | {\n        type: 'finish';\n        reason: FinishReason;\n        replayState?: unknown;\n    };\n    export type SurfaceEventType = 'user/message' | 'assistant/message' | 'tool/result' | 'steering/message';\n    export interface SurfaceIntent {\n        surfaceOp: SurfaceOp;\n        sourceEventSeqs?: number[];\n    }\n    export type SurfaceOp = 'append' | {\n        op: 'replace';\n        start: number;\n        end: number;\n    };\n    export interface TerminalCallView {\n        card: 'terminal';\n        title: string;\n        description?: string;\n        cwd?: string;\n    }\n    export interface TerminalResultView {\n        card: 'terminal';\n        title?: string;\n        output?: string;\n        exitCode?: number;\n        signal?: string;\n    }\n    export interface TodoItem {\n        content: string;\n        status: 'pending' | 'in_progress' | 'completed';\n    }\n    export interface TokenUsage {\n        inputTokens: number;\n        outputTokens: number;\n        cacheReadTokens?: number;\n        cacheWriteTokens?: number;\n        reasoningTokens?: number;\n    }\n    export interface ToolCallBlock {\n        type: 'tool-call';\n        id: CallId;\n        name: string;\n        arguments: string;\n    }\n    export type ToolCallKind = 'read' | 'edit' | 'delete' | 'move' | 'search' | 'execute' | 'fetch' | 'other';\n    export type ToolCallView = GenericCallView | TerminalCallView | DiffCallView;\n    export interface ToolDefinition extends ToolSchema {\n        readonly output: ToolOutputDefinition;\n        execute(args: unknown, exec: ToolRunContext): Promise;\n        finalizeContent?(exec: Readonly, result: Readonly): ContentBlock[] | undefined;\n        timeoutMs?: number;\n        isConcurrencySafe?(args: unknown): boolean;\n        presentCall?(args: unknown): ToolCallView | undefined;\n        presentResult?(args: unknown, result: ToolResult): ToolResultView | undefined;\n    }\n    export interface ToolErrorInfo {\n        name: string;\n        code: string;\n    }\n    export interface ToolExecution extends ToolExecutionInput {\n        readonly token: ToolExecutionToken;\n    }\n    export interface ToolExecutionFailure {\n        readonly isError: true;\n        readonly error: ToolFailure;\n        readonly value?: never;\n        readonly content: ContentBlock[];\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: never;\n    }\n    export interface ToolExecutionInput {\n        readonly callId: CallId;\n        readonly name: string;\n        readonly arguments: unknown;\n        readonly agent?: Agent;\n        readonly parent?: ToolExecutionToken;\n        readonly signal: AbortSignal;\n    }\n    export type ToolExecutionMode = {\n        kind: 'parallel';\n    } | {\n        kind: 'exclusive';\n    };\n    export type ToolExecutionResult = ToolExecutionSuccess | ToolExecutionFailure;\n    export interface ToolExecutionSuccess {\n        readonly isError: false;\n        readonly value: JsonValue;\n        readonly content: ContentBlock[];\n        readonly error?: never;\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: true;\n    }\n    export type ToolExecutionToken = symbol & {\n        readonly [toolExecutionTokenBrand]: true;\n    };\n    export interface ToolFailure {\n        message: string;\n        info?: ToolErrorInfo;\n    }\n    export type ToolGuard = (execution: Readonly) => string | undefined;\n    export interface ToolMessageSource {\n        kind: 'tool';\n        callId: CallId;\n    }\n    export interface ToolOutputDefinition {\n        readonly schema: JsonSchemaNode;\n        render(args: unknown, value: JsonValue): ContentBlock[];\n        presentationMeta?(args: unknown, value: JsonValue): JsonValue;\n    }\n    export interface ToolRestriction {\n        readonly allow?: readonly string[];\n        readonly deny?: readonly string[];\n    }\n    export interface ToolResult {\n        content: ContentBlock[];\n        isError: boolean;\n        meta?: JsonValue;\n    }\n    export interface ToolResultBlock {\n        type: 'tool-result';\n        toolCallId: CallId;\n        content: ContentBlock[];\n        isError?: boolean;\n    }\n    export interface ToolResultMessage extends Message {\n        readonly role: 'user';\n        readonly content: [\n            ToolResultBlock\n        ];\n        readonly source: ToolMessageSource;\n    }\n    export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView | SearchResultView | ReadResultView | WebResultView;\n    export interface ToolRunContext extends ToolExecution {\n        deferContext(context: UserMessage): void;\n        concludeTurn(): void;\n    }\n    export interface ToolSchema {\n        name: string;\n        description: string;\n        parameters: Record;\n    }\n    export type TurnEndReason = TurnEndReasonMap[keyof TurnEndReasonMap];\n    export interface TurnEndReasonMap {\n        completed: {\n            kind: 'completed';\n        };\n        aborted: {\n            kind: 'aborted';\n        };\n        error: {\n            kind: 'error';\n            step: number;\n        } & ({\n            failure: LlmFailure;\n            message?: never;\n            code?: never;\n        } | {\n            message: string;\n            code?: string;\n            failure?: never;\n        });\n        disposed: {\n            kind: 'disposed';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        interrupted: {\n            kind: 'interrupted';\n        };\n    }\n    export type TurnTrigger = TurnTriggerMap[keyof TurnTriggerMap];\n    export interface TurnTriggerMap {\n        message: {\n            kind: 'message';\n            source: MessageSource;\n        };\n        retry: {\n            kind: 'retry';\n        };\n        injection: {\n            kind: 'injection';\n            source: MessageSource;\n        };\n    }\n    export interface UserMessage extends Message {\n        readonly role: 'user';\n    }\n    export interface WebFetchResultView {\n        card: 'web';\n        kind: 'fetch';\n        title?: string;\n        url: string;\n        statusCode: number;\n        truncated: boolean;\n    }\n    export type WebResultView = WebSearchResultView | WebFetchResultView;\n    export interface WebSearchResultView {\n        card: 'web';\n        kind: 'search';\n        title?: string;\n        sources: WebSource[];\n        answer?: string;\n        truncated: boolean;\n    }\n    export interface WebSource {\n        url: string;\n        title?: string;\n        snippet?: string;\n        publishedAt?: string;\n    }"}],"isError":false}],"role":"user","id":"a4ec9786-5e3f-45b2-a6de-efdf953287f9"}},"sourceEventSeqs":[13],"surfaceOp":"append"}
+{"type":"step/end","seq":15,"time":1785487622726,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":16,"time":1785487622735,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":17,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":18,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"inspect-tools-event","name":"cordis_inspect","argumentsDelta":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}}}
+{"type":"assistant/chunk","seq":19,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}}}}
+{"type":"assistant/chunk","seq":20,"time":1785464660161,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":21,"time":1785487622739,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":22,"time":1785487622739,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1563ef5e-3ff8-4d11-8845-90305f229b62"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[17,18,19,20,21],"surfaceOp":"append"}
+{"type":"tool/call","seq":23,"time":1785487622740,"data":{"turn":1,"step":2,"callId":"inspect-tools-event","name":"cordis_inspect","arguments":"{\"what\":\"events\",\"name\":\"tools/pre-execute\"}"}}
+{"type":"tool/result","seq":24,"time":1785487622747,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"inspect-tools-event"},"content":[{"type":"tool-result","toolCallId":"inspect-tools-event","content":[{"type":"text","text":"## events\n- tools/pre-execute [waterfall] — Allow, deny, or ask before dispatch.\n    /**\n     * Allow, deny, or ask before dispatch. `next()` delegates to allow; missing\n     * approval support turns `ask` into denial. Async gates must observe\n     * `exec.signal`; the registry rechecks cancellation after they settle but\n     * never abandons their promise.\n     * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): agent-scoped listeners receive only that agent's calls.\n     * @param exec - the pending call (name, parsed arguments, caller agent).\n     * @mode waterfall\n     */\n    'tools/pre-execute'(this: Scoped, exec: ToolExecution, next: () => Promise): Promise\nwaterfall listeners receive a trailing next() and MUST call it to delegate — returning without next() vetoes the chain."}],"isError":false}],"role":"user","id":"c8c1b6f3-501a-40e4-8232-9e48b3d110a0"}},"sourceEventSeqs":[23],"surfaceOp":"append"}
+{"type":"step/end","seq":25,"time":1785487622747,"data":{"turn":1,"step":2}}
+{"type":"step/start","seq":26,"time":1785487622755,"data":{"turn":1,"step":3}}
+{"type":"assistant/chunk","seq":27,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":28,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"text-delta","index":0,"text":"CORDIS_INSPECT_JSDOC_OK"}}}
+{"type":"assistant/chunk","seq":29,"time":1784449176735,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"CORDIS_INSPECT_JSDOC_OK"}}}}
+{"type":"assistant/chunk","seq":30,"time":1785464660183,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":31,"time":1785487622760,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":32,"time":1785487622760,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"CORDIS_INSPECT_JSDOC_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"15e94d18-f791-462a-9f64-d6342afca4ec"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}
+{"type":"step/end","seq":33,"time":1785487622761,"data":{"turn":1,"step":3}}
+{"type":"turn/end","seq":34,"time":1785487622761,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/empty-response-retry/session.jsonl b/examples/acp-agent/tests/snapshots/empty-response-retry/session.jsonl
index 32aaf72b75..6f24b8cacf 100644
--- a/examples/acp-agent/tests/snapshots/empty-response-retry/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/empty-response-retry/session.jsonl
@@ -1,21 +1,23 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":0,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"This prompt first receives an empty completion, then a retried reply."}],"source":{"kind":"user"},"role":"user","id":"c9828d19-2c86-4a4f-9868-c9c28f345358"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"This prompt first receives an empty completion, then a retried reply."}],"source":{"kind":"user"},"role":"user","id":"c94e1add-a8cb-4c8d-b987-6471f5569f7a"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"This prompt first receives an","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":0,"outputTokens":0}}}}
-{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"error","failure":{"message":"model returned a completed response with no content","code":"EMPTY_RESPONSE"}}}}}
-{"type":"step/end","seq":7,"time":0,"data":{"turn":1,"step":1}}
-{"type":"llm/retry","seq":8,"time":0,"data":{"turn":1,"step":1,"provider":"deepseek-official","mode":"normal","policyKey":"[\"normal\",2,[\"EMPTY_RESPONSE\",\"RATE_LIMIT\",\"SERVER\",\"TIMEOUT\",\"TRANSPORT\"],1,1,0]","retry":1,"maxRetries":2,"delayMs":1,"failure":{"message":"model returned a completed response with no content","code":"EMPTY_RESPONSE"}}}
-{"type":"turn/end","seq":9,"time":1785047244285,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"model returned a completed response with no content","code":"EMPTY_RESPONSE"}}}}
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diff --git a/examples/acp-agent/tests/snapshots/error-finish/session.jsonl b/examples/acp-agent/tests/snapshots/error-finish/session.jsonl
index 3bea496c4d..28a3901d79 100644
--- a/examples/acp-agent/tests/snapshots/error-finish/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/error-finish/session.jsonl
@@ -1,8 +1,10 @@
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diff --git a/examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl b/examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl
index 8c85f91401..df0b05f88f 100644
--- a/examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/escalation-approved/system-prompt.expected.md b/examples/acp-agent/tests/snapshots/escalation-approved/system-prompt.expected.md
deleted file mode 100644
index e3437ad61a..0000000000
--- a/examples/acp-agent/tests/snapshots/escalation-approved/system-prompt.expected.md
+++ /dev/null
@@ -1,24 +0,0 @@
-You are an AI agent powered by the DeepSeek Harness SDK.
-
-You are a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}. Your bash tool runs under a file sandbox — a `[sandbox: file access denied …]` result is policy, not a command bug.
-
-Verify your work by running the code or tests. Keep answers brief and factual.
-
-
-Use the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.
-
-Use the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.
-
-Use the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.
-
-Check the [exit code: N] marker on every bash result; investigate failures before moving on.
-
-Track every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.
-
-Use goal tools for one long-running completion objective in the current session. create_goal may infer goal intent from a direct human request in any language; do not create a goal for routine single-turn work. Call get_goal before update_goal and copy its exact goal_id and revision. After session resume or fork, an active goal is disarmed: when a human asks to continue or resume in any wording or language, use update_goal action resume to rearm it. Mark complete only when the objective is actually achieved. Mark blocked only after the same blocking condition persists for at least 3 consecutive goal rounds, and report that concrete condition in blocked_reason; difficulty, uncertainty, or useful remaining work is not blocked.
-
-
-
-Use the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.
-
-Use the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.
diff --git a/examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl b/examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl
index 81c152a8d8..6040dcc2cd 100644
--- a/examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl
@@ -1,32 +1,34 @@
 {"type":"session","version":0,"id":"d692fe7f-7079-4ee4-8b06-f44fd026d4ea","createdAt":1783860679475,"cwd":"{{cwd}}","delegationDepth":0}
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diff --git a/examples/acp-agent/tests/snapshots/fs-edit/session.jsonl b/examples/acp-agent/tests/snapshots/fs-edit/session.jsonl
index 1420353ae4..d653b6efc4 100644
--- a/examples/acp-agent/tests/snapshots/fs-edit/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-edit/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/fs-escalation-approved/session.jsonl b/examples/acp-agent/tests/snapshots/fs-escalation-approved/session.jsonl
index 6bd1e05763..2829816acb 100644
--- a/examples/acp-agent/tests/snapshots/fs-escalation-approved/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-escalation-approved/session.jsonl
@@ -1,33 +1,35 @@
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diff --git a/examples/acp-agent/tests/snapshots/fs-glob-sampling/session.jsonl b/examples/acp-agent/tests/snapshots/fs-glob-sampling/session.jsonl
index 5c741500c1..b66ffc36b4 100644
--- a/examples/acp-agent/tests/snapshots/fs-glob-sampling/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-glob-sampling/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/fs-policy-reject/session.jsonl b/examples/acp-agent/tests/snapshots/fs-policy-reject/session.jsonl
index f58a07edfe..07d1408c9e 100644
--- a/examples/acp-agent/tests/snapshots/fs-policy-reject/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-policy-reject/session.jsonl
@@ -1,57 +1,59 @@
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diff --git a/examples/acp-agent/tests/snapshots/fs-read-window/session.jsonl b/examples/acp-agent/tests/snapshots/fs-read-window/session.jsonl
index 33b0a2754f..5a45fb8ef2 100644
--- a/examples/acp-agent/tests/snapshots/fs-read-window/session.jsonl
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index 9d16f66531..be9b355b51 100644
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diff --git a/examples/acp-agent/tests/snapshots/fs-write-overwrite/session.jsonl b/examples/acp-agent/tests/snapshots/fs-write-overwrite/session.jsonl
index 4fdc8bae84..c3d728d54d 100644
--- a/examples/acp-agent/tests/snapshots/fs-write-overwrite/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/fs-write/session.jsonl b/examples/acp-agent/tests/snapshots/fs-write/session.jsonl
index f90f803470..363dbbf76d 100644
--- a/examples/acp-agent/tests/snapshots/fs-write/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/fs-write/session.jsonl
@@ -1,31 +1,33 @@
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-invalid-matcher/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-invalid-matcher/session.jsonl
index 7e6cc1b618..13ca169587 100644
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-posttool-block/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-posttool-block/session.jsonl
index 8c64ec0d09..798f4fbca9 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-posttool-block/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-posttool-block/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-posttool-context/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-posttool-context/session.jsonl
index e94f687ecc..a36b665436 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-posttool-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-posttool-context/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl
index acd88bdec1..7f795e20ea 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/hook-cc-pretool-deny/session.jsonl b/examples/acp-agent/tests/snapshots/hook-cc-pretool-deny/session.jsonl
index 524da9bdaa..f24cbd8d7b 100644
--- a/examples/acp-agent/tests/snapshots/hook-cc-pretool-deny/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-cc-pretool-deny/session.jsonl
@@ -1,32 +1,34 @@
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index b10a9fa072..cd8f6ad415 100644
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-posttool-block/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-posttool-block/session.jsonl
index 312879b530..80578f51a9 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-posttool-block/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-posttool-context/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-posttool-context/session.jsonl
index 2fc630b5c0..dfa163108d 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-posttool-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-codex-posttool-context/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-pretool-block/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-pretool-block/session.jsonl
index bf6972025c..c5fa190ef3 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-pretool-block/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/hook-codex-pretool-block/session.jsonl
@@ -1,32 +1,34 @@
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-context/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-context/session.jsonl
index 20c12e2b0f..da4009ee72 100644
--- a/examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-context/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/hook-codex-stop-continue/session.jsonl b/examples/acp-agent/tests/snapshots/hook-codex-stop-continue/session.jsonl
index e164e5a984..87a677cbe2 100644
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diff --git a/examples/acp-agent/tests/snapshots/lsp-definition/session.jsonl b/examples/acp-agent/tests/snapshots/lsp-definition/session.jsonl
index d33ff70a75..65f4dfbb3c 100644
--- a/examples/acp-agent/tests/snapshots/lsp-definition/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/lsp-definition/session.jsonl
@@ -1,24 +1,26 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":0,"cwd":"{{cwd}}","delegationDepth":0}
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diff --git a/examples/acp-agent/tests/snapshots/lsp-definition/system-prompt.expected.md b/examples/acp-agent/tests/snapshots/lsp-definition/system-prompt.expected.md
index 7bde8fe289..952e2509ee 100644
--- a/examples/acp-agent/tests/snapshots/lsp-definition/system-prompt.expected.md
+++ b/examples/acp-agent/tests/snapshots/lsp-definition/system-prompt.expected.md
@@ -19,9 +19,6 @@ Use search/read for ordinary navigation. Use lsp when textual matches are ambigu
 
 Use goal tools for one long-running completion objective in the current session. create_goal may infer goal intent from a direct human request in any language; do not create a goal for routine single-turn work. Call get_goal before update_goal and copy its exact goal_id and revision. After session resume or fork, an active goal is disarmed: when a human asks to continue or resume in any wording or language, use update_goal action resume to rearm it. Mark complete only when the objective is actually achieved. Mark blocked only after the same blocking condition persists for at least 3 consecutive goal rounds, and report that concrete condition in blocked_reason; difficulty, uncertainty, or useful remaining work is not blocked.
 
-Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
-
 Use the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.
 
 Use the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.
diff --git a/examples/acp-agent/tests/snapshots/multi-turn/session.jsonl b/examples/acp-agent/tests/snapshots/multi-turn/session.jsonl
index d46a07010a..484bae3680 100644
--- a/examples/acp-agent/tests/snapshots/multi-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/multi-turn/session.jsonl
@@ -1,32 +1,34 @@
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-{"type":"assistant/message","seq":70,"time":0,"data":{"turn":1,"step":7,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-pro"},"id":"98ef0a96-ea29-4737-80c4-5916dcd690d3"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[65,66,67,68,69],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/pty-tools/system-prompt.expected.md b/examples/acp-agent/tests/snapshots/pty-tools/system-prompt.expected.md
index df065a83cb..3ee211382f 100644
--- a/examples/acp-agent/tests/snapshots/pty-tools/system-prompt.expected.md
+++ b/examples/acp-agent/tests/snapshots/pty-tools/system-prompt.expected.md
@@ -19,9 +19,6 @@ Track every background task id you start. You are notified in-session when a tas
 
 Use goal tools for one long-running completion objective in the current session. create_goal may infer goal intent from a direct human request in any language; do not create a goal for routine single-turn work. Call get_goal before update_goal and copy its exact goal_id and revision. After session resume or fork, an active goal is disarmed: when a human asks to continue or resume in any wording or language, use update_goal action resume to rearm it. Mark complete only when the objective is actually achieved. Mark blocked only after the same blocking condition persists for at least 3 consecutive goal rounds, and report that concrete condition in blocked_reason; difficulty, uncertainty, or useful remaining work is not blocked.
 
-Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
-
 Use the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.
 
 Use the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.
diff --git a/examples/acp-agent/tests/snapshots/repeat-tool-guard/session.jsonl b/examples/acp-agent/tests/snapshots/repeat-tool-guard/session.jsonl
index b763c20125..21951c43c5 100644
--- a/examples/acp-agent/tests/snapshots/repeat-tool-guard/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/repeat-tool-guard/session.jsonl
@@ -1,71 +1,73 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":0,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Write the todo list 'watch the kettle boil' five times in a row without changing it, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"c7f37e71-3cad-428e-b267-311499b38e9d"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Write the todo list 'watch the kettle boil' five times in a row without changing it, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"0a8a60c7-eece-48d5-ac75-fb39c9d79c56"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"Write the todo list 'watch","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
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+{"type":"user/message","seq":61,"time":1785487607538,"data":{"content":[{"type":"text","text":"Repeated tool call detected:\n- tool: todo_write\n- consecutive_calls: 5\n- arguments: {\"todos\":[{\"content\":\"watch the kettle boil\",\"status\":\"in_progress\"}]}\nThe repeated calls are not making progress. Do not call this tool with these exact arguments again. Inspect the latest result and choose a different action, different arguments, or finish the task if enough evidence has been gathered."}],"source":{"kind":"plugin","plugin":"repeat-tool-guard"},"role":"user","id":"55ed1387-137f-4fe9-b149-17c2d781874c"},"surfaceOp":"append"}
+{"type":"step/end","seq":62,"time":1785487607538,"data":{"turn":1,"step":5}}
+{"type":"step/start","seq":63,"time":1785487607545,"data":{"turn":1,"step":6}}
+{"type":"assistant/chunk","seq":64,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":65,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"text-delta","index":0,"text":"DONE."}}}
+{"type":"assistant/chunk","seq":66,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE."}}}}
+{"type":"assistant/chunk","seq":67,"time":1785464650047,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":68,"time":1785487607550,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":69,"time":1785487607550,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"text","text":"DONE."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5bee849d-42f5-42d5-a125-454a886ed774"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[64,65,66,67,68],"surfaceOp":"append"}
+{"type":"step/end","seq":70,"time":1785487607550,"data":{"turn":1,"step":6}}
+{"type":"turn/end","seq":71,"time":1785487607551,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/session-query-spill/input.json b/examples/acp-agent/tests/snapshots/session-query-spill/input.json
index 0e0abb74a2..dfe4dbcf17 100644
--- a/examples/acp-agent/tests/snapshots/session-query-spill/input.json
+++ b/examples/acp-agent/tests/snapshots/session-query-spill/input.json
@@ -2,6 +2,6 @@
   "steps": [
     { "op": "initialize" },
     { "op": "newSession" },
-    { "op": "prompt", "text": "Read request event 4 with session_event_read, verify the complete spill was retained, then reply DONE." }
+    { "op": "prompt", "text": "Read request event 5 with session_event_read, verify the complete spill was retained, then reply DONE." }
   ]
 }
diff --git a/examples/acp-agent/tests/snapshots/session-query-spill/replay.override.json b/examples/acp-agent/tests/snapshots/session-query-spill/replay.override.json
new file mode 100644
index 0000000000..0c9381d5ca
--- /dev/null
+++ b/examples/acp-agent/tests/snapshots/session-query-spill/replay.override.json
@@ -0,0 +1,32 @@
+[
+  {
+    "kind": "chunks",
+    "chunks": [
+      { "type": "block-start", "index": 0, "blockType": "tool-call" },
+      { "type": "tool-call-delta", "index": 0, "id": "call_session_query_spill", "name": "session_event_read", "argumentsDelta": "{\"seq\":5}" },
+      { "type": "block-end", "index": 0, "block": { "type": "tool-call", "id": "call_session_query_spill", "name": "session_event_read", "arguments": "{\"seq\":5}" } },
+      { "type": "usage", "usage": { "inputTokens": 10, "outputTokens": 5 } },
+      { "type": "finish", "reason": { "kind": "tool-calls" } }
+    ]
+  },
+  {
+    "kind": "chunks",
+    "chunks": [
+      { "type": "block-start", "index": 0, "blockType": "tool-call" },
+      { "type": "tool-call-delta", "index": 0, "id": "call_verify_session_query_spill", "name": "bash", "argumentsDelta": "{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}" },
+      { "type": "block-end", "index": 0, "block": { "type": "tool-call", "id": "call_verify_session_query_spill", "name": "bash", "arguments": "{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}" } },
+      { "type": "usage", "usage": { "inputTokens": 10, "outputTokens": 5 } },
+      { "type": "finish", "reason": { "kind": "tool-calls" } }
+    ]
+  },
+  {
+    "kind": "chunks",
+    "chunks": [
+      { "type": "block-start", "index": 0, "blockType": "text" },
+      { "type": "text-delta", "index": 0, "text": "DONE" },
+      { "type": "block-end", "index": 0, "block": { "type": "text", "text": "DONE" } },
+      { "type": "usage", "usage": { "inputTokens": 10, "outputTokens": 2 } },
+      { "type": "finish", "reason": { "kind": "stop" } }
+    ]
+  }
+]
diff --git a/examples/acp-agent/tests/snapshots/session-query-spill/session.jsonl b/examples/acp-agent/tests/snapshots/session-query-spill/session.jsonl
index 653fa9416f..6ca0698024 100644
--- a/examples/acp-agent/tests/snapshots/session-query-spill/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/session-query-spill/session.jsonl
@@ -1,34 +1,36 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":0,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Read request event 4 with session_event_read, verify the complete spill was retained, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"4cca69f9-35bf-4a89-ad5e-c36296496f75"},"surfaceOp":"append"}
-{"type":"session/title","seq":2,"time":0,"data":{"title":"Read request event 4 with","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":5,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_session_query_spill","name":"session_event_read","argumentsDelta":"{\"seq\":4}"}}}
-{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":4}"}}}}
-{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
-{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":4}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"3b3615ef-d5fc-483e-b8fb-9724da1c90a1"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
-{"type":"tool/call","seq":11,"time":0,"data":{"turn":1,"step":1,"callId":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":4}"}}
-{"type":"tool/result","seq":12,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_session_query_spill"},"content":[{"type":"tool-result","toolCallId":"call_session_query_spill","content":[{"type":"text","text":"Session {{sessionId}} — Read request event 4 with\nTarget event seq 4:\n```json\n{\n  \"type\": \"request/header\",\n  \"seq\": 4,\n  \"time\": 1785313195724,\n  \"data\": {\n    \"header\": {\n      \"config\": {\n        \"provider\": \"deepseek-official\",\n        \"model\": \"deepseek-v4-flash\"\n rmissions: one sentence for the user explaining why this exact file operation needs the wider access.\"\n              }\n            },\n            \"required\": [\n              \"file_path\",\n              \"content\"\n            ]\n          }\n        }\n      ]\n    },\n    \"reason\": \"initial\"\n  }\n}\n```\n\n(Omitted 36016 bytes. Full formatted result stored at: /tmp/dsh-acp-snap-035d1d054/session-0a508d3a5c8b/adedf3ca051a-session_event_read.txt. Use read with offset/limit, or grep this path to search within it.)"}],"isError":false}],"role":"user","id":"2e691143-73e8-47fd-b9bd-d5296317af66"}},"sourceEventSeqs":[11],"surfaceOp":"append"}
-{"type":"step/end","seq":13,"time":0,"data":{"turn":1,"step":1}}
-{"type":"step/start","seq":14,"time":0,"data":{"turn":1,"step":2}}
-{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"call_verify_session_query_spill","name":"bash","argumentsDelta":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}}}
-{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}}}}
-{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
-{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"87fe621f-c41d-483c-86b5-7c7615d801b4"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
-{"type":"tool/call","seq":21,"time":0,"data":{"turn":1,"step":2,"callId":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}}
-{"type":"tool/result","seq":22,"time":0,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_verify_session_query_spill"},"content":[{"type":"tool-result","toolCallId":"call_verify_session_query_spill","content":[{"type":"text","text":"SPILL_CANONICAL_OK\n"}],"isError":false}],"role":"user","id":"7f062b79-f9fc-415c-b84d-79a7af155391"}},"sourceEventSeqs":[21],"surfaceOp":"append"}
-{"type":"step/end","seq":23,"time":0,"data":{"turn":1,"step":2}}
-{"type":"step/start","seq":24,"time":0,"data":{"turn":1,"step":3}}
-{"type":"assistant/chunk","seq":25,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":26,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"text-delta","index":0,"text":"DONE"}}}
-{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
-{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
-{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":30,"time":0,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"c9c59547-8b07-44c5-ba75-54d7b03b13fb"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[25,26,27,28,29],"surfaceOp":"append"}
-{"type":"step/end","seq":31,"time":0,"data":{"turn":1,"step":3}}
-{"type":"turn/end","seq":32,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Read request event 5 with session_event_read, verify the complete spill was retained, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"7129c99d-22c8-4643-b958-dc493099dbc6"},"surfaceOp":"append"}
+{"type":"session/title","seq":2,"time":0,"data":{"title":"Read request event 5 with","messageSeqs":[1],"source":{"kind":"fallback"}}}
+{"type":"user/message","seq":3,"time":1785464635081,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"195c46d7-2148-422e-bc06-416a33d13cad"},"surfaceOp":"append"}
+{"type":"step/start","seq":4,"time":1785464635081,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":5,"time":1785464635082,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":6,"time":1785487583775,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_session_query_spill","name":"session_event_read","argumentsDelta":"{\"seq\":5}"}}}
+{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":5}"}}}}
+{"type":"assistant/chunk","seq":10,"time":1785464635091,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":11,"time":1785487583784,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":12,"time":1785487583784,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":5}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"93e52142-e666-42f0-a2d8-97ac4cce08d5"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[7,8,9,10,11],"surfaceOp":"append"}
+{"type":"tool/call","seq":13,"time":1785487583784,"data":{"turn":1,"step":1,"callId":"call_session_query_spill","name":"session_event_read","arguments":"{\"seq\":5}"}}
+{"type":"tool/result","seq":14,"time":1785487583793,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_session_query_spill"},"content":[{"type":"tool-result","toolCallId":"call_session_query_spill","content":[{"type":"text","text":"Session {{sessionId}} — Read request event 5 with\nTarget event seq 5:\n```json\n{\n  \"type\": \"request/header\",\n  \"seq\": 5,\n  \"time\": 1785487583775,\n  \"data\": {\n    \"header\": {\n      \"config\": {\n        \"provider\": \"deepseek-official\",\n        \"model\": \"deepseek-v4-flash\"\n rmissions: one sentence for the user explaining why this exact file operation needs the wider access.\"\n              }\n            },\n            \"required\": [\n              \"file_path\",\n              \"content\"\n            ]\n          }\n        }\n      ]\n    },\n    \"reason\": \"initial\"\n  }\n}\n```\n\n(Omitted 35794 bytes. Full formatted result stored at: /tmp/dsh-acp-snap-035d1d054/session-0a508d3a5c8b/adedf3ca051a-session_event_read.txt. Use read with offset/limit, or grep this path to search within it.)"}],"isError":false}],"role":"user","id":"cc4aac80-24a4-4a27-99d9-fbcafc812d63"}},"sourceEventSeqs":[13],"surfaceOp":"append"}
+{"type":"step/end","seq":15,"time":1785487583794,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":16,"time":1785487583801,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"call_verify_session_query_spill","name":"bash","argumentsDelta":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}}}
+{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}}}}
+{"type":"assistant/chunk","seq":20,"time":1785464635114,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":21,"time":1785487583806,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":22,"time":1785487583806,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"98a8a3f7-a00d-485e-b1b7-128fdfa9f662"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[17,18,19,20,21],"surfaceOp":"append"}
+{"type":"tool/call","seq":23,"time":1785487583807,"data":{"turn":1,"step":2,"callId":"call_verify_session_query_spill","name":"bash","arguments":"{\"command\":\"file=$(find /tmp/dsh-acp-snap-035d1d054 -name '*-session_event_read.txt' -type f); grep -q request/header \\\"$file\\\" && grep -q session_event_search \\\"$file\\\" && echo SPILL_CANONICAL_OK\",\"description\":\"Verify complete session query spill\"}"}}
+{"type":"tool/result","seq":24,"time":1785487583831,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"call_verify_session_query_spill"},"content":[{"type":"tool-result","toolCallId":"call_verify_session_query_spill","content":[{"type":"text","text":"SPILL_CANONICAL_OK\n"}],"isError":false}],"role":"user","id":"06313924-d62f-4fa3-9e39-83c7ee37bfc4"}},"sourceEventSeqs":[23],"surfaceOp":"append"}
+{"type":"step/end","seq":25,"time":1785487583831,"data":{"turn":1,"step":2}}
+{"type":"step/start","seq":26,"time":1785487583838,"data":{"turn":1,"step":3}}
+{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"text-delta","index":0,"text":"DONE"}}}
+{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
+{"type":"assistant/chunk","seq":30,"time":1785464635152,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
+{"type":"assistant/chunk","seq":31,"time":1785487583843,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":32,"time":1785487583843,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"38628c04-99d6-40e6-ac32-b74be9a40234"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}
+{"type":"step/end","seq":33,"time":1785487583844,"data":{"turn":1,"step":3}}
+{"type":"turn/end","seq":34,"time":1785487583844,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/session-query-spill/system-prompt.expected.md b/examples/acp-agent/tests/snapshots/session-query-spill/system-prompt.expected.md
index 68bdd841c7..d88db1934e 100644
--- a/examples/acp-agent/tests/snapshots/session-query-spill/system-prompt.expected.md
+++ b/examples/acp-agent/tests/snapshots/session-query-spill/system-prompt.expected.md
@@ -19,9 +19,6 @@ Use session_search to find relevant work from prior sessions, or session_event_s
 
 Use goal tools for one long-running completion objective in the current session. create_goal may infer goal intent from a direct human request in any language; do not create a goal for routine single-turn work. Call get_goal before update_goal and copy its exact goal_id and revision. After session resume or fork, an active goal is disarmed: when a human asks to continue or resume in any wording or language, use update_goal action resume to rearm it. Mark complete only when the objective is actually achieved. Mark blocked only after the same blocking condition persists for at least 3 consecutive goal rounds, and report that concrete condition in blocked_reason; difficulty, uncertainty, or useful remaining work is not blocked.
 
-Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
-
 Use the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.
 
 Use the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.
diff --git a/examples/acp-agent/tests/snapshots/session-sandbox-root/session.jsonl b/examples/acp-agent/tests/snapshots/session-sandbox-root/session.jsonl
index 9da57be604..450a1aea97 100644
--- a/examples/acp-agent/tests/snapshots/session-sandbox-root/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/session-sandbox-root/session.jsonl
@@ -1,24 +1,26 @@
 {"type":"session","version":0,"id":"00000000-0000-0000-0000-000000000000","createdAt":0,"cwd":"/Users/cty/acp-snap-cwd-MABAjO","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":1784567324138,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":1784821266392,"data":{"content":[{"type":"text","text":"Use the write tool (NOT bash) to create session-root.txt in the current directory containing exactly: session root. Then reply with exactly the single word DONE."}],"source":{"kind":"user"},"role":"user","id":"b53fe9ec-e73f-4ee8-8774-94aaf9de5c6e"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1784821266392,"data":{"content":[{"type":"text","text":"Use the write tool (NOT bash) to create session-root.txt in the current directory containing exactly: session root. Then reply with exactly the single word DONE."}],"source":{"kind":"user"},"role":"user","id":"8b7533eb-79db-459d-8ab5-e17a69aa99e0"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1784821266392,"data":{"title":"Use the write tool (NOT","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":3,"time":1784821266397,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1784821266398,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":5,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":6,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_session_root","name":"write","argumentsDelta":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}}}
-{"type":"assistant/chunk","seq":7,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}}}}
-{"type":"assistant/chunk","seq":8,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
-{"type":"assistant/chunk","seq":9,"time":1784567324143,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":10,"time":1784821266419,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"4b578002-af83-438b-be8c-8bac282a44e9"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
-{"type":"tool/call","seq":11,"time":1784821266419,"data":{"turn":1,"step":1,"callId":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}}
-{"type":"tool/result","seq":12,"time":1784821266431,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_session_root"},"content":[{"type":"tool-result","toolCallId":"call_session_root","content":[{"type":"text","text":"/Users/cty/acp-snap-cwd-MABAjO/session-root.txt\nfile\n\nCreated file\n"}],"isError":false}],"role":"user","id":"016d137a-90f2-4168-9d07-429814d0bac4"},"meta":{"diffs":[]}},"sourceEventSeqs":[11],"surfaceOp":"append"}
-{"type":"step/end","seq":13,"time":1784821266436,"data":{"turn":1,"step":1}}
-{"type":"step/start","seq":14,"time":1784821266436,"data":{"turn":1,"step":2}}
-{"type":"assistant/chunk","seq":15,"time":1784821266442,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":16,"time":1784821266442,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"DONE"}}}
-{"type":"assistant/chunk","seq":17,"time":1784821266442,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
-{"type":"assistant/chunk","seq":18,"time":1784821266442,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
-{"type":"assistant/chunk","seq":19,"time":1784567324157,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":20,"time":1784821266442,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"fffac6af-a016-4db6-b11e-9d8a41034262"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
-{"type":"step/end","seq":21,"time":1784821266446,"data":{"turn":1,"step":2}}
-{"type":"turn/end","seq":22,"time":1784821266446,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"user/message","seq":3,"time":1785464678705,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"/Users/cty/acp-snap-cwd-MABAjO\". Some platform temporary areas may also be writable.\n\nApproval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"ff65d0ad-f029-4d13-8d3d-10cc2f88cf3a"},"surfaceOp":"append"}
+{"type":"step/start","seq":4,"time":1785464678705,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":5,"time":1785464678705,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":6,"time":1785487651556,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":7,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":8,"time":1784821266418,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"call_session_root","name":"write","argumentsDelta":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}}}
+{"type":"assistant/chunk","seq":9,"time":1784567324143,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}}}}
+{"type":"assistant/chunk","seq":10,"time":1785464678714,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":11,"time":1785487651565,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":12,"time":1785487651565,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"c48b5704-3948-4039-a22b-63318599ac33"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[7,8,9,10,11],"surfaceOp":"append"}
+{"type":"tool/call","seq":13,"time":1785487651565,"data":{"turn":1,"step":1,"callId":"call_session_root","name":"write","arguments":"{\"file_path\":\"session-root.txt\",\"content\":\"session root\"}"}}
+{"type":"tool/result","seq":14,"time":1785487651580,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_session_root"},"content":[{"type":"tool-result","toolCallId":"call_session_root","content":[{"type":"text","text":"/Users/cty/acp-snap-cwd-MABAjO/session-root.txt\nfile\n\nCreated file\n"}],"isError":false}],"role":"user","id":"4b79567c-44ca-4a15-80f4-18c2d5c96d91"},"meta":{"diffs":[]}},"sourceEventSeqs":[13],"surfaceOp":"append"}
+{"type":"step/end","seq":15,"time":1785487651580,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":16,"time":1785487651587,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":17,"time":1784821266442,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":18,"time":1784821266442,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"DONE"}}}
+{"type":"assistant/chunk","seq":19,"time":1784567324157,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
+{"type":"assistant/chunk","seq":20,"time":1785464678741,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
+{"type":"assistant/chunk","seq":21,"time":1785487651592,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":22,"time":1785487651592,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"e84ca7f0-1382-4088-bf7a-f919eaf7c418"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[17,18,19,20,21],"surfaceOp":"append"}
+{"type":"step/end","seq":23,"time":1785487651592,"data":{"turn":1,"step":2}}
+{"type":"turn/end","seq":24,"time":1785487651592,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/acp-agent/tests/snapshots/session-title-after-turn/session.jsonl b/examples/acp-agent/tests/snapshots/session-title-after-turn/session.jsonl
index ca0491650f..6b2e05c891 100644
--- a/examples/acp-agent/tests/snapshots/session-title-after-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/session-title-after-turn/session.jsonl
@@ -1,16 +1,18 @@
 {"type":"session","version":0,"id":"session-title-after-turn","createdAt":0,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":1785222848166,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":1785222848166,"data":{"content":[{"type":"text","text":"Reply with exactly TITLE_DONE. Do not use tools."}],"source":{"kind":"user"},"role":"user","id":"00000000-0000-4000-8000-000000000001"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1785222848166,"data":{"content":[{"type":"text","text":"Reply with exactly TITLE_DONE. Do not use tools."}],"source":{"kind":"user"},"role":"user","id":"a343504e-776a-4c93-9fba-cfcf35af92d8"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785222848166,"data":{"title":"Reply with exactly TITLE_DONE. Do","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":3,"time":1785222848199,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1785222848199,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"session/title-llm-request","seq":5,"time":1785222848201,"data":{"titleProvider":"session-title-first-message-llm","messageSeqs":[1],"route":{"provider":"title-replay","model":"title-model"},"system":"Create a concise title for an AI coding-assistant session from the supplied human messages.\nReturn only the title on one line, **in plain text of natural language**, with no quotes, prefix, explanation, Markdown, XML, or terminal control codes. No code is allowed.\nUse the language of the messages.\nAim for about 5 words in non-CJK languages or 10 CJK characters.","messages":[{"content":[{"type":"text","text":"Generate the session title from this JSON array of human messages:\n[{\"seq\":1,\"text\":\"Reply with exactly TITLE_DONE. Do not use tools.\"}]"}],"source":{"kind":"plugin","plugin":"dsh-session-title-llm"},"role":"user","id":"00000000-0000-4000-8000-000000000002"}],"maxTokens":32}}
-{"type":"assistant/chunk","seq":6,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":7,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"TITLE_DONE"}}}
-{"type":"assistant/chunk","seq":8,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"TITLE_DONE"}}}}
-{"type":"assistant/chunk","seq":9,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
-{"type":"assistant/chunk","seq":10,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":11,"time":1785222848208,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"TITLE_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"00000000-0000-4000-8000-000000000003"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[6,7,8,9,10],"surfaceOp":"append"}
-{"type":"step/end","seq":12,"time":1785222848209,"data":{"turn":1,"step":1}}
-{"type":"turn/end","seq":13,"time":1785222848209,"data":{"turn":1,"reason":{"kind":"completed"}}}
-{"type":"session/title","seq":14,"time":1785222848209,"data":{"title":"Late durable session title","messageSeqs":[1],"source":{"kind":"provider","provider":"session-title-first-message-llm","model":{"provider":"title-replay","model":"title-model"}}}}
+{"type":"user/message","seq":3,"time":1785464630804,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"1b4b2fb6-489f-4ab7-b355-e3846932e8e2"},"surfaceOp":"append"}
+{"type":"step/start","seq":4,"time":1785464630805,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":5,"time":1785464630805,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":6,"time":1785487577012,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"session/title-llm-request","seq":7,"time":1785487577014,"data":{"titleProvider":"session-title-first-message-llm","messageSeqs":[1],"route":{"provider":"title-replay","model":"title-model"},"system":"Create a concise title for an AI coding-assistant session from the supplied human messages.\nReturn only the title on one line, **in plain text of natural language**, with no quotes, prefix, explanation, Markdown, XML, or terminal control codes. No code is allowed.\nUse the language of the messages.\nAim for about 5 words in non-CJK languages or 10 CJK characters.","messages":[{"content":[{"type":"text","text":"Generate the session title from this JSON array of human messages:\n[{\"seq\":1,\"text\":\"Reply with exactly TITLE_DONE. Do not use tools.\"}]"}],"source":{"kind":"plugin","plugin":"dsh-session-title-llm"},"role":"user","id":"289089a1-dc9c-4780-a957-391d427b04a9"}],"maxTokens":32}}
+{"type":"assistant/chunk","seq":8,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":9,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"TITLE_DONE"}}}
+{"type":"assistant/chunk","seq":10,"time":1785222848208,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"TITLE_DONE"}}}}
+{"type":"assistant/chunk","seq":11,"time":1785464630814,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":2}}}}
+{"type":"assistant/chunk","seq":12,"time":1785487577022,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":13,"time":1785487577022,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"TITLE_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"3e93ff2c-0e8d-4918-aa5c-ffaf7ca1aa5c"},"usage":{"inputTokens":10,"outputTokens":2}},"sourceEventSeqs":[8,9,10,11,12],"surfaceOp":"append"}
+{"type":"step/end","seq":14,"time":1785487577022,"data":{"turn":1,"step":1}}
+{"type":"turn/end","seq":15,"time":1785487577022,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"session/title","seq":16,"time":1785487577022,"data":{"title":"Late durable session title","messageSeqs":[1],"source":{"kind":"provider","provider":"session-title-first-message-llm","model":{"provider":"title-replay","model":"title-model"}}}}
diff --git a/examples/acp-agent/tests/snapshots/skill-load/session.jsonl b/examples/acp-agent/tests/snapshots/skill-load/session.jsonl
index 216b9c2f65..6b366448f1 100644
--- a/examples/acp-agent/tests/snapshots/skill-load/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/skill-load/session.jsonl
@@ -1,31 +1,33 @@
 {"type":"session","version":0,"id":"9eb4181f-2d05-49d3-98fc-3711fe2f5664","createdAt":1783654655599,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":1783654655602,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":1783654655603,"data":{"content":[{"type":"text","text":"Load the snapshot-skill skill with the skill tool, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"9c670f1c-3508-4b98-9cae-21f363652d6e"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1783654655603,"data":{"content":[{"type":"text","text":"Load the snapshot-skill skill with the skill tool, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"2243ae1a-2d65-4f9c-a972-d360b8cc08aa"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783654655603,"data":{"title":"Load the snapshot-skill skill with","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"user/message","seq":3,"time":1784903324926,"data":{"content":[{"type":"text","text":"\nA skill is a reusable set of task-specific instructions. The following skills are available in this session:\n\n\n- `model-only-skill`: Prove user-disabled skills remain available to the model.\n- `snapshot-skill`: Exercise project skill discovery and loading in snapshot tests.\n\n\nIf the user names a skill, or the task clearly matches a skill's description, call the `skill` tool with the exact skill name before taking task actions. Load all applicable skills, then follow their full instructions. This catalog contains summaries only; do not infer or follow a skill's instructions until it has been loaded.\n"}],"source":{"kind":"plugin","plugin":"dsh-tool-skill"},"role":"user","id":"4f537803-7424-41eb-887f-f39676b89187"},"surfaceOp":"append"}
-{"type":"step/start","seq":4,"time":1784903324927,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":5,"time":1784903324928,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":6,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
-{"type":"assistant/chunk","seq":7,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"reasoning-delta","index":0,"text":"Load the requested skill."}}}
-{"type":"assistant/chunk","seq":8,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":9,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":1,"id":"call_skill_load","name":"skill","argumentsDelta":"{\"name\":\"snapshot-skill\"}"}}}
-{"type":"assistant/chunk","seq":10,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"Load the requested skill."}}}}
-{"type":"assistant/chunk","seq":11,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_skill_load","name":"skill","arguments":"{\"name\":\"snapshot-skill\"}"}}}}
-{"type":"assistant/chunk","seq":12,"time":1783654655609,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":100,"outputTokens":20,"cacheReadTokens":0,"reasoningTokens":5}}}}
-{"type":"assistant/chunk","seq":13,"time":1784903324935,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
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diff --git a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.1.jsonl
index 7de9d377db..2629fc3a34 100644
--- a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.1.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.2.jsonl b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.2.jsonl
index f5d0727edf..f4f578cc9e 100644
--- a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.2.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.2.jsonl
@@ -1,24 +1,26 @@
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diff --git a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.jsonl b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.jsonl
index f303c3a74c..fc0065ed77 100644
--- a/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-depth-two-rejection/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/subagent-fork/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-fork/session.1.jsonl
index a5002ad8a4..fb894bad71 100644
--- a/examples/acp-agent/tests/snapshots/subagent-fork/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-fork/session.1.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/subagent-fork/session.jsonl b/examples/acp-agent/tests/snapshots/subagent-fork/session.jsonl
index 992d86bc57..51e617a484 100644
--- a/examples/acp-agent/tests/snapshots/subagent-fork/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-fork/session.jsonl
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+{"type":"assistant/message","seq":153,"time":1785487615376,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to use subagent_fork to delegate a question to a child agent. The child agent inherits this conversation and should be able to answer: the project codeword is MARMALADE. After the subagent returns, I should reply with PARENT_DONE."},{"type":"tool-call","id":"call_00_sAtKUseRzHRBvL4CF7XF1334","name":"subagent_fork","arguments":"{\"description\": \"Recall project codeword\", \"prompt\": \"What is the project codeword mentioned earlier in this conversation? Reply with exactly that one word and nothing else.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1f86a90c-c2ae-4873-a69d-638dbdc5e5c5"},"usage":{"inputTokens":158,"outputTokens":147,"cacheReadTokens":2816,"reasoningTokens":59}},"sourceEventSeqs":[43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152],"surfaceOp":"append"}
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+{"type":"assistant/chunk","seq":189,"time":1783352139274,"data":{"turn":2,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The forked child agent correctly returned \"MARMALADE\". Now I need to reply with \"PARENT_DONE\"."}}}}
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+{"type":"assistant/message","seq":193,"time":1785487615441,"data":{"turn":2,"step":2,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The forked child agent correctly returned \"MARMALADE\". Now I need to reply with \"PARENT_DONE\"."},{"type":"text","text":"PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"51ad858f-fa31-44e0-9ff5-e4e6c7e7f6aa"},"usage":{"inputTokens":65,"outputTokens":30,"cacheReadTokens":3072,"reasoningTokens":25}},"sourceEventSeqs":[158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192],"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/subagent-mixed/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-mixed/session.1.jsonl
index 131dc97b0c..085110915f 100644
--- a/examples/acp-agent/tests/snapshots/subagent-mixed/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-mixed/session.1.jsonl
@@ -1,17 +1,19 @@
 {"type":"session","version":0,"id":"e4aafa18-b9e3-48d0-8aae-6c9b25dcae80","createdAt":1783352145223,"cwd":"{{cwd}}","parentSession":"959ffdf5-03e2-465e-9482-009b704632dc","delegationDepth":1}
 {"type":"turn/start","seq":0,"time":1783352145224,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":1783352145224,"data":{"content":[{"type":"text","text":"Reply with exactly the word ALPHA and nothing else."}],"source":{"kind":"user"},"role":"user","id":"214ad816-8421-48ff-b501-ca51716d761f"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1783352145224,"data":{"content":[{"type":"text","text":"Reply with exactly the word ALPHA and nothing else."}],"source":{"kind":"user"},"role":"user","id":"fb27f490-7305-4ba6-bcf6-84bc53b6f989"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352145224,"data":{"title":"Reply with exactly the word","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":3,"time":1783352145224,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":1783352145224,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":5,"time":1783352145820,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
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-{"type":"text-chunks","seq0":26,"time0":1783352146129,"data":{"turn":1,"step":1,"index":1,"dt":[0,0],"texts":["AL","P","HA"]}}
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-{"type":"assistant/chunk","seq":31,"time":1783352146129,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":48,"outputTokens":23,"cacheReadTokens":2816,"reasoningTokens":19}}}}
-{"type":"assistant/chunk","seq":32,"time":1783352146129,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":33,"time":1783352146130,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user asked me to reply with exactly the word \"ALPHA\" and nothing else."},{"type":"text","text":"ALPHA"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b5de9346-e543-41fc-bb34-7fcb9c54c249"},"usage":{"inputTokens":48,"outputTokens":23,"cacheReadTokens":2816,"reasoningTokens":19}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"surfaceOp":"append"}
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-{"type":"turn/end","seq":35,"time":1783352146130,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"user/message","seq":3,"time":1785464655997,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"91c18155-2ffe-40ff-9d7c-c1fd5ac65edd"},"surfaceOp":"append"}
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+{"type":"request/header","seq":5,"time":1785464655998,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
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+{"type":"text-chunks","seq0":28,"time0":1783352146129,"data":{"turn":1,"step":1,"index":1,"dt":[0,0],"texts":["AL","P","HA"]}}
+{"type":"assistant/chunk","seq":31,"time":1783352146129,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The user asked me to reply with exactly the word \"ALPHA\" and nothing else."}}}}
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diff --git a/examples/acp-agent/tests/snapshots/subagent-mixed/session.2.jsonl b/examples/acp-agent/tests/snapshots/subagent-mixed/session.2.jsonl
index 9ba1d0a51b..5faa3ec645 100644
--- a/examples/acp-agent/tests/snapshots/subagent-mixed/session.2.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-mixed/session.2.jsonl
@@ -1,33 +1,35 @@
-{"type":"session","version":0,"id":"02b3a8dd-1d5e-4866-825f-5fbf5000a632","createdAt":1783352147504,"cwd":"{{cwd}}","parentSession":"959ffdf5-03e2-465e-9482-009b704632dc","seedLength":32,"delegationDepth":1}
+{"type":"session","version":0,"id":"02b3a8dd-1d5e-4866-825f-5fbf5000a632","createdAt":1783352147504,"cwd":"{{cwd}}","parentSession":"959ffdf5-03e2-465e-9482-009b704632dc","seedLength":34,"delegationDepth":1}
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-{"type":"user/message","seq":1,"time":1783352142834,"data":{"content":[{"type":"text","text":"Remember this fact for later: the project codeword is SAFFRON. Reply with the single word OK and stop. Do not use any tools."}],"source":{"kind":"user"},"role":"user","id":"9f3b1367-3a0e-4793-9ecf-ae67a79f24d2"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1783352142834,"data":{"content":[{"type":"text","text":"Remember this fact for later: the project codeword is SAFFRON. Reply with the single word OK and stop. Do not use any tools."}],"source":{"kind":"user"},"role":"user","id":"f2c31c03-e865-411b-a2be-d9592f5c2583"},"surfaceOp":"append"}
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diff --git a/examples/acp-agent/tests/snapshots/subagent-mixed/session.jsonl b/examples/acp-agent/tests/snapshots/subagent-mixed/session.jsonl
index c5a9d0f822..de52d69e68 100644
--- a/examples/acp-agent/tests/snapshots/subagent-mixed/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/subagent-multi/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-multi/session.1.jsonl
index b4fc996ffa..72b813d314 100644
--- a/examples/acp-agent/tests/snapshots/subagent-multi/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-multi/session.1.jsonl
@@ -1,17 +1,19 @@
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diff --git a/examples/acp-agent/tests/snapshots/subagent-multi/session.2.jsonl b/examples/acp-agent/tests/snapshots/subagent-multi/session.2.jsonl
index 149d8c6df0..b7c0e0b921 100644
--- a/examples/acp-agent/tests/snapshots/subagent-multi/session.2.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-multi/session.2.jsonl
@@ -1,18 +1,20 @@
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diff --git a/examples/acp-agent/tests/snapshots/subagent-multi/session.jsonl b/examples/acp-agent/tests/snapshots/subagent-multi/session.jsonl
index 3eced8fa8e..144b08c654 100644
--- a/examples/acp-agent/tests/snapshots/subagent-multi/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-multi/session.jsonl
@@ -1,43 +1,45 @@
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diff --git a/examples/acp-agent/tests/snapshots/subagent-spawn/session.1.jsonl b/examples/acp-agent/tests/snapshots/subagent-spawn/session.1.jsonl
index 170f871f48..2364c16b22 100644
--- a/examples/acp-agent/tests/snapshots/subagent-spawn/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-spawn/session.1.jsonl
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index 8e2569df7c..e901b298fe 100644
--- a/examples/acp-agent/tests/snapshots/subagent-spawn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/subagent-spawn/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/text-turn/session.jsonl b/examples/acp-agent/tests/snapshots/text-turn/session.jsonl
index 9fe9ade111..4ab87bf0d3 100644
--- a/examples/acp-agent/tests/snapshots/text-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/text-turn/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/text-turn/system-prompt.expected.md b/examples/acp-agent/tests/snapshots/text-turn/system-prompt.expected.md
index 17e6773a03..132b1e8b2c 100644
--- a/examples/acp-agent/tests/snapshots/text-turn/system-prompt.expected.md
+++ b/examples/acp-agent/tests/snapshots/text-turn/system-prompt.expected.md
@@ -17,9 +17,6 @@ Track every background task id you start. You are notified in-session when a tas
 
 Use goal tools for one long-running completion objective in the current session. create_goal may infer goal intent from a direct human request in any language; do not create a goal for routine single-turn work. Call get_goal before update_goal and copy its exact goal_id and revision. After session resume or fork, an active goal is disarmed: when a human asks to continue or resume in any wording or language, use update_goal action resume to rearm it. Mark complete only when the objective is actually achieved. Mark blocked only after the same blocking condition persists for at least 3 consecutive goal rounds, and report that concrete condition in blocked_reason; difficulty, uncertainty, or useful remaining work is not blocked.
 
-Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
-
 Use the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.
 
 Use the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.
diff --git a/examples/acp-agent/tests/snapshots/todo-write/session.jsonl b/examples/acp-agent/tests/snapshots/todo-write/session.jsonl
index c6b27e9c6d..4d4e02e0a0 100644
--- a/examples/acp-agent/tests/snapshots/todo-write/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/todo-write/session.jsonl
@@ -1,32 +1,34 @@
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index 9f6ceb5930..2b783fc4f5 100644
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diff --git a/examples/acp-agent/tests/snapshots/web-fetch/session.jsonl b/examples/acp-agent/tests/snapshots/web-fetch/session.jsonl
index af78dc43cf..020f65ca60 100644
--- a/examples/acp-agent/tests/snapshots/web-fetch/session.jsonl
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diff --git a/examples/acp-agent/tests/snapshots/web-fetch/system-prompt.expected.md b/examples/acp-agent/tests/snapshots/web-fetch/system-prompt.expected.md
index 45705db0a5..3dd24eff4b 100644
--- a/examples/acp-agent/tests/snapshots/web-fetch/system-prompt.expected.md
+++ b/examples/acp-agent/tests/snapshots/web-fetch/system-prompt.expected.md
@@ -19,9 +19,6 @@ Use the web_fetch tool to retrieve the content of a specific HTTP(S) URL (for ex
 
 Use goal tools for one long-running completion objective in the current session. create_goal may infer goal intent from a direct human request in any language; do not create a goal for routine single-turn work. Call get_goal before update_goal and copy its exact goal_id and revision. After session resume or fork, an active goal is disarmed: when a human asks to continue or resume in any wording or language, use update_goal action resume to rearm it. Mark complete only when the objective is actually achieved. Mark blocked only after the same blocking condition persists for at least 3 consecutive goal rounds, and report that concrete condition in blocked_reason; difficulty, uncertainty, or useful remaining work is not blocked.
 
-Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
-
 Use the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.
 
 Use the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.
diff --git a/examples/acp-agent/tests/snapshots/workflow-run/session.1.jsonl b/examples/acp-agent/tests/snapshots/workflow-run/session.1.jsonl
index c7a957525e..34ed986909 100644
--- a/examples/acp-agent/tests/snapshots/workflow-run/session.1.jsonl
+++ b/examples/acp-agent/tests/snapshots/workflow-run/session.1.jsonl
@@ -1,17 +1,19 @@
 {"type":"session","version":0,"id":"583a4db2-3350-436c-b4a5-5615fd159052","createdAt":1783600636316,"cwd":"{{cwd}}","parentSession":"3fd7d599-56b1-493a-930d-f1fc5e1556e8","delegationDepth":1}
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 {"type":"session/title","seq":2,"time":1783600636316,"data":{"title":"Reply with exactly the word","messageSeqs":[1],"source":{"kind":"fallback"}}}
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diff --git a/examples/acp-agent/tests/snapshots/workflow-run/session.jsonl b/examples/acp-agent/tests/snapshots/workflow-run/session.jsonl
index 5c4b1086ee..1e65c7cf9b 100644
--- a/examples/acp-agent/tests/snapshots/workflow-run/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/workflow-run/session.jsonl
@@ -1,30 +1,32 @@
 {"type":"session","version":0,"id":"3fd7d599-56b1-493a-930d-f1fc5e1556e8","createdAt":1783600631835,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":1783600631838,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
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 {"type":"session/title","seq":2,"time":1783600631838,"data":{"title":"Use the workflow tool exactly","messageSeqs":[1],"source":{"kind":"fallback"}}}
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diff --git a/examples/acp-agent/tests/snapshots/workspace-context/session.jsonl b/examples/acp-agent/tests/snapshots/workspace-context/session.jsonl
index f2157a27fe..339ba5480d 100644
--- a/examples/acp-agent/tests/snapshots/workspace-context/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/workspace-context/session.jsonl
@@ -1,37 +1,39 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":0,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":1783778297065,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
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diff --git a/examples/acp-agent/tests/snapshots/workspace-context/system-prompt.expected.md b/examples/acp-agent/tests/snapshots/workspace-context/system-prompt.expected.md
index 6cd8d5725f..7e2d00fac7 100644
--- a/examples/acp-agent/tests/snapshots/workspace-context/system-prompt.expected.md
+++ b/examples/acp-agent/tests/snapshots/workspace-context/system-prompt.expected.md
@@ -17,9 +17,6 @@ Track every background task id you start. You are notified in-session when a tas
 
 Use goal tools for one long-running completion objective in the current session. create_goal may infer goal intent from a direct human request in any language; do not create a goal for routine single-turn work. Call get_goal before update_goal and copy its exact goal_id and revision. After session resume or fork, an active goal is disarmed: when a human asks to continue or resume in any wording or language, use update_goal action resume to rearm it. Mark complete only when the objective is actually achieved. Mark blocked only after the same blocking condition persists for at least 3 consecutive goal rounds, and report that concrete condition in blocked_reason; difficulty, uncertainty, or useful remaining work is not blocked.
 
-Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
-
 Use the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.
 
 Use the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.
diff --git a/examples/acp-agent/tests/snapshots/workspace-edit/session.jsonl b/examples/acp-agent/tests/snapshots/workspace-edit/session.jsonl
index 0b32d5ceac..95c46ed6de 100644
--- a/examples/acp-agent/tests/snapshots/workspace-edit/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/workspace-edit/session.jsonl
@@ -1,57 +1,59 @@
 {"type":"session","version":0,"id":"48aca674-000a-4583-810b-01f8785cef13","createdAt":1783352264076,"cwd":"{{cwd}}","delegationDepth":0}
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-{"type":"user/message","seq":1,"time":1783352264081,"data":{"content":[{"type":"text","text":"A file named greeting.txt in the current directory contains one word. Use the bash tool to append a second line containing the word WORLD to it (so it has two lines), then read the file back with `cat greeting.txt` to confirm, and reply with the single word DONE. Use a single bash call per action."}],"source":{"kind":"user"},"role":"user","id":"77ac6781-b796-4060-b670-63baa39a986b"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1783352264081,"data":{"content":[{"type":"text","text":"A file named greeting.txt in the current directory contains one word. Use the bash tool to append a second line containing the word WORLD to it (so it has two lines), then read the file back with `cat greeting.txt` to confirm, and reply with the single word DONE. Use a single bash call per action."}],"source":{"kind":"user"},"role":"user","id":"0408c0a7-2344-4d37-9e8e-ab80d42f8062"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783352264081,"data":{"title":"A file named greeting.txt in","messageSeqs":[1],"source":{"kind":"fallback"}}}
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+{"type":"assistant/chunk","seq":163,"time":1783352267872,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
+{"type":"reasoning-chunks","seq0":164,"time0":1783352267902,"data":{"turn":1,"step":3,"index":0,"dt":[1,0,34,0,0,0,28,0,0,118,0],"texts":["Good",","," now"," let"," me"," read"," the"," file"," back"," with"," cat","."]}}
+{"type":"assistant/chunk","seq":176,"time":1783352268115,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
+{"type":"tool-call-chunks","seq0":177,"time0":1783352268115,"data":{"turn":1,"step":3,"index":1,"dt":[0,0,0,32,0,0,0,0,66,0,0,0,0,33,1,0,28,1,32,1,31,73,1],"id":"call_00_Wo4H7tFNheZJWKVDrAHK5851","name":"bash","args":["","{","\"","command","\"",": ","\"","cat"," greeting",".txt","\"",", ","\"","description","\"",": ","\"","Read"," greeting",".txt"," to"," confirm","\"","}"]}}
+{"type":"assistant/chunk","seq":201,"time":1783352268414,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"Good, now let me read the file back with cat."}}}}
+{"type":"assistant/chunk","seq":202,"time":1783352268414,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_Wo4H7tFNheZJWKVDrAHK5851","name":"bash","arguments":"{\"command\": \"cat greeting.txt\", \"description\": \"Read greeting.txt to confirm\"}"}}}}
+{"type":"assistant/chunk","seq":203,"time":1785464641090,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":126,"outputTokens":77,"cacheReadTokens":3072,"reasoningTokens":12}}}}
+{"type":"assistant/chunk","seq":204,"time":1785487593138,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":205,"time":1785487593138,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"reasoning","text":"Good, now let me read the file back with cat."},{"type":"tool-call","id":"call_00_Wo4H7tFNheZJWKVDrAHK5851","name":"bash","arguments":"{\"command\": \"cat greeting.txt\", \"description\": \"Read greeting.txt to confirm\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"cf1a82c7-d1bb-4d30-9ce4-628099288d3d"},"usage":{"inputTokens":126,"outputTokens":77,"cacheReadTokens":3072,"reasoningTokens":12}},"sourceEventSeqs":[163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204],"surfaceOp":"append"}
+{"type":"tool/call","seq":206,"time":1785487593138,"data":{"turn":1,"step":3,"callId":"call_00_Wo4H7tFNheZJWKVDrAHK5851","name":"bash","arguments":"{\"command\": \"cat greeting.txt\", \"description\": \"Read greeting.txt to confirm\"}"}}
+{"type":"tool/result","seq":207,"time":1785487593151,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"call_00_Wo4H7tFNheZJWKVDrAHK5851"},"content":[{"type":"tool-result","toolCallId":"call_00_Wo4H7tFNheZJWKVDrAHK5851","content":[{"type":"text","text":"hello\n\nWORLD"}],"isError":false}],"role":"user","id":"a51e96ef-2bbe-4b5b-a7ca-d2c52e3ed993"}},"sourceEventSeqs":[206],"surfaceOp":"append"}
+{"type":"step/end","seq":208,"time":1785487593151,"data":{"turn":1,"step":3}}
+{"type":"step/start","seq":209,"time":1785487593159,"data":{"turn":1,"step":4}}
+{"type":"assistant/chunk","seq":210,"time":1783352269291,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
+{"type":"reasoning-chunks","seq0":211,"time0":1783352269304,"data":{"turn":1,"step":4,"index":0,"dt":[1,0,0,33,0,32,34,1,0,0,0,32,1,0,33,1,32,1,0,0,0],"texts":["The"," file"," now"," has"," two"," lines",":\n","1","."," hello","\n","2","."," WORLD","\n\n","I"," can"," reply"," with"," D","ONE","."]}}
+{"type":"assistant/chunk","seq":233,"time":1783352269505,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":234,"time":1783352269538,"data":{"turn":1,"step":4,"chunk":{"type":"text-delta","index":1,"text":"D"}}}
+{"type":"assistant/chunk","seq":235,"time":1783352269538,"data":{"turn":1,"step":4,"chunk":{"type":"text-delta","index":1,"text":"ONE"}}}
+{"type":"assistant/chunk","seq":236,"time":1783352269538,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The file now has two lines:\n1. hello\n2. WORLD\n\nI can reply with DONE."}}}}
+{"type":"assistant/chunk","seq":237,"time":1783352269538,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":1,"block":{"type":"text","text":"DONE"}}}}
+{"type":"assistant/chunk","seq":238,"time":1785464641115,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":219,"outputTokens":25,"cacheReadTokens":3072,"reasoningTokens":22}}}}
+{"type":"assistant/chunk","seq":239,"time":1785487593165,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":240,"time":1785487593165,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The file now has two lines:\n1. hello\n2. WORLD\n\nI can reply with DONE."},{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b151c40b-0fe9-4159-8c74-f06566d09b08"},"usage":{"inputTokens":219,"outputTokens":25,"cacheReadTokens":3072,"reasoningTokens":22}},"sourceEventSeqs":[210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239],"surfaceOp":"append"}
+{"type":"step/end","seq":241,"time":1785487593165,"data":{"turn":1,"step":4}}
+{"type":"turn/end","seq":242,"time":1785487593166,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/pty.cordis.snapshot.yml b/examples/headless-agent/pty.cordis.snapshot.yml
index 0de292a8f9..49f3a95afb 100644
--- a/examples/headless-agent/pty.cordis.snapshot.yml
+++ b/examples/headless-agent/pty.cordis.snapshot.yml
@@ -8,6 +8,10 @@
         name: '@deepseek-ai/dsh-llm-deepseek'
         disabled: true
       - insert:
+          - id: sandbox-policy
+            name: '@deepseek-ai/dsh-sandbox-policy'
+            config:
+              mode: danger-full-access
           - id: pty
             name: '@deepseek-ai/dsh-pty'
           - id: pty-snapshot-backend
diff --git a/examples/headless-agent/tests/semantic-checkpoint-snapshots/tool-outcome-unknown/session.expected.jsonl b/examples/headless-agent/tests/semantic-checkpoint-snapshots/tool-outcome-unknown/session.expected.jsonl
index e3d3d0d3f8..192f62bc09 100644
--- a/examples/headless-agent/tests/semantic-checkpoint-snapshots/tool-outcome-unknown/session.expected.jsonl
+++ b/examples/headless-agent/tests/semantic-checkpoint-snapshots/tool-outcome-unknown/session.expected.jsonl
@@ -13,10 +13,11 @@
 {"type":"session/title","seq":11,"time":0,"data":{"title":"Perform one side-effecting remote mutati","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":12,"time":0,"data":{"turn":2,"step":1}}
 {"type":"request/header","seq":13,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"text-delta","index":0,"text":"I will verify the external state before deciding whether to retry the side-effecting operation."}}}
-{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"I will verify the external state before deciding whether to retry the side-effecting operation."}}}}
-{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":18,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"I will verify the external state before deciding whether to retry the side-effecting operation."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"}},"sourceEventSeqs":[14,15,16,17],"surfaceOp":"append"}
-{"type":"step/end","seq":19,"time":0,"data":{"turn":2,"step":1}}
-{"type":"turn/end","seq":20,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}
+{"type":"request/context","seq":14,"time":0,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"text-delta","index":0,"text":"I will verify the external state before deciding whether to retry the side-effecting operation."}}}
+{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"I will verify the external state before deciding whether to retry the side-effecting operation."}}}}
+{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":19,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"I will verify the external state before deciding whether to retry the side-effecting operation."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"}},"sourceEventSeqs":[15,16,17,18],"surfaceOp":"append"}
+{"type":"step/end","seq":20,"time":0,"data":{"turn":2,"step":1}}
+{"type":"turn/end","seq":21,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.1.jsonl b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
index d19a962e48..d9a20e60c7 100644
--- a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
+++ b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.1.jsonl
@@ -1,14 +1,15 @@
 {"type":"session","version":0,"id":"22222222-2222-4222-8222-222222222222","createdAt":1783950001000,"cwd":"{{cwd}}","parentSession":"11111111-1111-4111-8111-111111111111","delegationDepth":1}
 {"type":"turn/start","seq":0,"time":1783957884563,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":1783957884563,"data":{"content":[{"type":"text","text":"Reply with exactly DIRECT_CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"b07a1eeb-2060-44e5-87d3-05d315a4a74b"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1783957884563,"data":{"content":[{"type":"text","text":"Reply with exactly DIRECT_CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"85750b5e-389a-4dfb-83e7-3341025692da"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783957884563,"data":{"title":"Reply with exactly DIRECT_CHILD_OK and","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783957884564,"data":{"turn":1,"step":1}}
 {"type":"request/header","seq":4,"time":1783957884564,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}.\n\nVerify your work by running the code or tests. Keep answers brief and factual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.\n\n## Writing code for run_code\n\nPass `run_code` the body of an async TypeScript function (erasable syntax only — no `enum` or namespaces; type annotations are advisory, the code runs type-stripped). Inside the program:\n\n- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools[\"my-tool\"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.\n- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.\n- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.\n- Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.\n\nThe available tools:\n\n```ts\ntype JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }\n\ninterface ToolArgsMap {\n  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under  mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. */\n  bash: {\n    /** The bash command to execute. */\n    command: string;\n    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\". */\n    description: string;\n    /** Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry. */\n    timeoutMs?: number;\n    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */\n    workdir?: string;\n    /** Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies. */\n    run_in_background?: boolean;\n  } & Record;\n  /** Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */\n  cordis_inspect: {\n    /** Limit the report to one section. Omit for all sections. */\n    what?: \"services\" | \"plugins\" | \"tools\" | \"temporary\" | \"api\" | \"events\";\n    /** Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\". */\n    name?: string;\n  } & Record;\n  /** Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */\n  cordis_mount: {\n    /** JavaScript body returning a temporary Plugin; evaluated now and saved nowhere. */\n    code: string;\n  } & Record;\n  /** Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins. */\n  cordis_unmount: {\n    /** The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart. */\n    id: string;\n  } & Record;\n  /** Edit an existing UTF-8 text file by replacing literal text. */\n  edit: {\n    /** Path to edit, resolved by the filesystem backend. */\n    file_path: string;\n    /** Literal text to replace. Must match exactly. */\n    old_string: string;\n    /** Literal replacement text. Use an empty string to delete the match. */\n    new_string: string;\n    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */\n    replace_all?: boolean;\n  } & Record;\n  /** Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools. */\n  ralph: {\n    /** The immutable completion objective for every fresh Ralph round. */\n    objective: string;\n    /** Optional positive safe-integer round cap, bounded by the deployment ceiling. */\n    maxRounds?: number;\n  } & Record;\n  /** Read a UTF-8 text file and return line-numbered content. */\n  read: {\n    /** Path to read, resolved by the filesystem backend. */\n    file_path: string;\n    /** 1-based first line to return. Defaults to 1. */\n    offset?: number;\n    /** Maximum number of lines to return. Defaults to 2000. */\n    limit?: number;\n  } & Record;\n  /** Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill. */\n  skill: {\n    /** The exact skill name from the available skills list. */\n    name: string;\n  } & Record;\n  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record;\n  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent_fork: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record;\n  /** Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops. */\n  task_kill: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Optional short reason, recorded in the log and forwarded to the task. */\n    reason?: string;\n  } & Record;\n  /** List your background tasks (running and finished) with their ids, kinds, and statuses. */\n  task_list: Record;\n  /** Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap. */\n  task_output: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive. */\n    wait?: boolean;\n    /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */\n    timeout_ms?: number;\n  } & Record;\n  /** Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished). */\n  todo_write: {\n    /** The COMPLETE task list, replacing any previous list. */\n    todos: ({\n      /** What the task is — a short imperative line. */\n      content: string;\n      /** pending (not started) | in_progress (now) | completed (done). */\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n  } & Record;\n  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. The workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return ` — the value must be JSON-serializable and is this tool's result. Script-body hooks: - `agent(prompt, opts?): Promise` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly. - `pipeline(items, ...stages): Promise` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`. Constraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes. */\n  workflow: {\n    /** The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return `). */\n    script: string;\n    /** The workflow identity block (plain JSON — never code). */\n    meta: {\n      /** Short kebab-case workflow name. */\n      name: string;\n      /** One-line description of what the workflow does. */\n      description: string;\n      /** Optional guidance on when this workflow applies. */\n      whenToUse?: string;\n      /** Optional phase declarations matched by phase() calls. */\n      phases?: ({\n        /** The phase title phase() calls match by exact string. */\n        title: string;\n        /** Optional one-line description of the phase. */\n        detail?: string;\n        /** Optional provider override this phase is expected to use. */\n        provider?: string;\n        /** Optional model override this phase is expected to use. */\n        model?: string;\n      } & Record)[];\n    } & Record;\n    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}). */\n    args?: Record;\n  } & Record;\n  /** Create or fully replace a UTF-8 text file. */\n  write: {\n    /** Path to write, resolved by the filesystem backend. */\n    file_path: string;\n    /** Full UTF-8 text content to write. */\n    content: string;\n  } & Record;\n}\n\ninterface ToolOutputMap {\n  bash: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    exitCode: number | null;\n    signal: string | null;\n    timedOut: boolean;\n    aborted: boolean;\n    timeoutMs: number;\n    stdout: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    stderr: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    sandbox?: {\n      mode: string;\n      denied: boolean;\n      enforcement?: string;\n      runnerFailed?: boolean;\n    };\n  };\n  cordis_inspect: string;\n  cordis_mount: {\n    id: string;\n    pluginName: string;\n    state: \"pending\" | \"loading\" | \"active\" | \"failed\" | \"disposed\" | \"unloading\";\n    provides: string[];\n    waitingFor: string[];\n  };\n  cordis_unmount: {\n    id: string;\n    pluginName: string;\n  };\n  edit: {\n    path: string;\n    before: string;\n    after: string;\n  };\n  ralph: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  read: {\n    path: string;\n    offset: number;\n    lines: {\n      number: number;\n      text: string;\n    }[];\n    totalLines: number;\n  };\n  skill: {\n    name: string;\n    provider: string;\n    resourceBase?: {\n      kind: \"directory\";\n      path: string;\n    } | {\n      kind: \"url\";\n      url: string;\n    } | {\n      kind: \"opaque\";\n      description: string;\n    };\n    content: string;\n  };\n  subagent: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  subagent_fork: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  task_kill: {\n    outcome: \"cancellation-requested\" | \"already-finished\";\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  task_list: ({\n    id: string;\n    kind: string;\n    label: string;\n    status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n    detail?: string;\n    startedAt: number;\n    finishedAt?: number;\n  })[];\n  task_output: {\n    text: string;\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  todo_write: {\n    todos: ({\n      content: string;\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n    counts: {\n      pending: number;\n      inProgress: number;\n      completed: number;\n    };\n  };\n  workflow: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  write: {\n    path: string;\n    operation: \"create\" | \"update\";\n    before: string | null;\n    after: string;\n  };\n}\n\ntype ToolName = keyof ToolOutputMap\n\ndeclare class ToolCallError extends Error {\n  readonly name: \"ToolCallError\";\n  readonly toolName: ToolName;\n}\n\ndeclare const tools: {\n  [K in ToolName]: (args: ToolArgsMap[K]) => Promise;\n}\n```","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under  mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"cordis_inspect","description":"Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.","parameters":{"type":"object","properties":{"what":{"type":"string","description":"Limit the report to one section. Omit for all sections.","enum":["services","plugins","tools","temporary","api","events"]},"name":{"type":"string","description":"Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."}}}},{"name":"cordis_mount","description":"Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"JavaScript body returning a temporary Plugin; evaluated now and saved nowhere."}},"required":["code"]}},{"name":"cordis_unmount","description":"Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins.","parameters":{"type":"object","properties":{"id":{"type":"string","description":"The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart."}},"required":["id"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"run_code","description":"Execute a TypeScript program against the available tools. Write the BODY of an async function (erasable syntax only; top-level `await` and `return` work) and call tools as `await tools.name(args)` per the declarations in the system prompt. Only what you print or return comes back — curate it.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"The program: the body of an async TypeScript function."},"description":{"type":"string","description":"Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."}},"required":["code","description"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return ` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return `)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
-{"type":"assistant/chunk","seq":5,"time":1783950001005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":6,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"DIRECT_CHILD_OK"}}}
-{"type":"assistant/chunk","seq":7,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DIRECT_CHILD_OK"}}}}
-{"type":"assistant/chunk","seq":8,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":9,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":10,"time":1783957884564,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"c7bcc77c-c6e5-425f-ac11-76ece69d31d5"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
-{"type":"step/end","seq":11,"time":1783957884564,"data":{"turn":1,"step":1}}
-{"type":"turn/end","seq":12,"time":1783957884564,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"request/context","seq":5,"time":1785460681625,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":6,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":7,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"DIRECT_CHILD_OK"}}}
+{"type":"assistant/chunk","seq":8,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DIRECT_CHILD_OK"}}}}
+{"type":"assistant/chunk","seq":9,"time":1783957884564,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":10,"time":1785460681625,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":11,"time":1785460681625,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"DIRECT_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"00e7f2df-fc6f-45a0-ba87-6ba20ade5aa7"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[6,7,8,9,10],"surfaceOp":"append"}
+{"type":"step/end","seq":12,"time":1785460681625,"data":{"turn":1,"step":1}}
+{"type":"turn/end","seq":13,"time":1785460681625,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.2.jsonl b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
index 7bf0f35750..5e7dd32bb6 100644
--- a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
+++ b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.2.jsonl
@@ -1,14 +1,15 @@
 {"type":"session","version":0,"id":"33333333-3333-4333-8333-333333333333","createdAt":1783950002000,"cwd":"{{cwd}}","parentSession":"11111111-1111-4111-8111-111111111111","delegationDepth":1}
 {"type":"turn/start","seq":0,"time":1783957884700,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":1783957884700,"data":{"content":[{"type":"text","text":"Reply with exactly WORKFLOW_CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"1d565b63-5689-4c09-9686-abd3ee379e28"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1783957884700,"data":{"content":[{"type":"text","text":"Reply with exactly WORKFLOW_CHILD_OK and nothing else."}],"source":{"kind":"user"},"role":"user","id":"2b9d695a-5ba1-4520-8130-d618bc1a4743"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783957884700,"data":{"title":"Reply with exactly WORKFLOW_CHILD_OK and","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783957884700,"data":{"turn":1,"step":1}}
 {"type":"request/header","seq":4,"time":1783957884701,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}.\n\nVerify your work by running the code or tests. Keep answers brief and factual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.\n\n## Writing code for run_code\n\nPass `run_code` the body of an async TypeScript function (erasable syntax only — no `enum` or namespaces; type annotations are advisory, the code runs type-stripped). Inside the program:\n\n- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools[\"my-tool\"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.\n- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.\n- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.\n- Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.\n\nThe available tools:\n\n```ts\ntype JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }\n\ninterface ToolArgsMap {\n  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under  mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. */\n  bash: {\n    /** The bash command to execute. */\n    command: string;\n    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\". */\n    description: string;\n    /** Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry. */\n    timeoutMs?: number;\n    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */\n    workdir?: string;\n    /** Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies. */\n    run_in_background?: boolean;\n  } & Record;\n  /** Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */\n  cordis_inspect: {\n    /** Limit the report to one section. Omit for all sections. */\n    what?: \"services\" | \"plugins\" | \"tools\" | \"temporary\" | \"api\" | \"events\";\n    /** Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\". */\n    name?: string;\n  } & Record;\n  /** Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */\n  cordis_mount: {\n    /** JavaScript body returning a temporary Plugin; evaluated now and saved nowhere. */\n    code: string;\n  } & Record;\n  /** Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins. */\n  cordis_unmount: {\n    /** The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart. */\n    id: string;\n  } & Record;\n  /** Edit an existing UTF-8 text file by replacing literal text. */\n  edit: {\n    /** Path to edit, resolved by the filesystem backend. */\n    file_path: string;\n    /** Literal text to replace. Must match exactly. */\n    old_string: string;\n    /** Literal replacement text. Use an empty string to delete the match. */\n    new_string: string;\n    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */\n    replace_all?: boolean;\n  } & Record;\n  /** Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools. */\n  ralph: {\n    /** The immutable completion objective for every fresh Ralph round. */\n    objective: string;\n    /** Optional positive safe-integer round cap, bounded by the deployment ceiling. */\n    maxRounds?: number;\n  } & Record;\n  /** Read a UTF-8 text file and return line-numbered content. */\n  read: {\n    /** Path to read, resolved by the filesystem backend. */\n    file_path: string;\n    /** 1-based first line to return. Defaults to 1. */\n    offset?: number;\n    /** Maximum number of lines to return. Defaults to 2000. */\n    limit?: number;\n  } & Record;\n  /** Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill. */\n  skill: {\n    /** The exact skill name from the available skills list. */\n    name: string;\n  } & Record;\n  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record;\n  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent_fork: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record;\n  /** Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops. */\n  task_kill: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Optional short reason, recorded in the log and forwarded to the task. */\n    reason?: string;\n  } & Record;\n  /** List your background tasks (running and finished) with their ids, kinds, and statuses. */\n  task_list: Record;\n  /** Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap. */\n  task_output: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive. */\n    wait?: boolean;\n    /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */\n    timeout_ms?: number;\n  } & Record;\n  /** Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished). */\n  todo_write: {\n    /** The COMPLETE task list, replacing any previous list. */\n    todos: ({\n      /** What the task is — a short imperative line. */\n      content: string;\n      /** pending (not started) | in_progress (now) | completed (done). */\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n  } & Record;\n  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. The workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return ` — the value must be JSON-serializable and is this tool's result. Script-body hooks: - `agent(prompt, opts?): Promise` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly. - `pipeline(items, ...stages): Promise` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`. Constraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes. */\n  workflow: {\n    /** The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return `). */\n    script: string;\n    /** The workflow identity block (plain JSON — never code). */\n    meta: {\n      /** Short kebab-case workflow name. */\n      name: string;\n      /** One-line description of what the workflow does. */\n      description: string;\n      /** Optional guidance on when this workflow applies. */\n      whenToUse?: string;\n      /** Optional phase declarations matched by phase() calls. */\n      phases?: ({\n        /** The phase title phase() calls match by exact string. */\n        title: string;\n        /** Optional one-line description of the phase. */\n        detail?: string;\n        /** Optional provider override this phase is expected to use. */\n        provider?: string;\n        /** Optional model override this phase is expected to use. */\n        model?: string;\n      } & Record)[];\n    } & Record;\n    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}). */\n    args?: Record;\n  } & Record;\n  /** Create or fully replace a UTF-8 text file. */\n  write: {\n    /** Path to write, resolved by the filesystem backend. */\n    file_path: string;\n    /** Full UTF-8 text content to write. */\n    content: string;\n  } & Record;\n}\n\ninterface ToolOutputMap {\n  bash: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    exitCode: number | null;\n    signal: string | null;\n    timedOut: boolean;\n    aborted: boolean;\n    timeoutMs: number;\n    stdout: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    stderr: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    sandbox?: {\n      mode: string;\n      denied: boolean;\n      enforcement?: string;\n      runnerFailed?: boolean;\n    };\n  };\n  cordis_inspect: string;\n  cordis_mount: {\n    id: string;\n    pluginName: string;\n    state: \"pending\" | \"loading\" | \"active\" | \"failed\" | \"disposed\" | \"unloading\";\n    provides: string[];\n    waitingFor: string[];\n  };\n  cordis_unmount: {\n    id: string;\n    pluginName: string;\n  };\n  edit: {\n    path: string;\n    before: string;\n    after: string;\n  };\n  ralph: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  read: {\n    path: string;\n    offset: number;\n    lines: {\n      number: number;\n      text: string;\n    }[];\n    totalLines: number;\n  };\n  skill: {\n    name: string;\n    provider: string;\n    resourceBase?: {\n      kind: \"directory\";\n      path: string;\n    } | {\n      kind: \"url\";\n      url: string;\n    } | {\n      kind: \"opaque\";\n      description: string;\n    };\n    content: string;\n  };\n  subagent: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  subagent_fork: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  task_kill: {\n    outcome: \"cancellation-requested\" | \"already-finished\";\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  task_list: ({\n    id: string;\n    kind: string;\n    label: string;\n    status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n    detail?: string;\n    startedAt: number;\n    finishedAt?: number;\n  })[];\n  task_output: {\n    text: string;\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  todo_write: {\n    todos: ({\n      content: string;\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n    counts: {\n      pending: number;\n      inProgress: number;\n      completed: number;\n    };\n  };\n  workflow: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  write: {\n    path: string;\n    operation: \"create\" | \"update\";\n    before: string | null;\n    after: string;\n  };\n}\n\ntype ToolName = keyof ToolOutputMap\n\ndeclare class ToolCallError extends Error {\n  readonly name: \"ToolCallError\";\n  readonly toolName: ToolName;\n}\n\ndeclare const tools: {\n  [K in ToolName]: (args: ToolArgsMap[K]) => Promise;\n}\n```","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under  mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"cordis_inspect","description":"Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.","parameters":{"type":"object","properties":{"what":{"type":"string","description":"Limit the report to one section. Omit for all sections.","enum":["services","plugins","tools","temporary","api","events"]},"name":{"type":"string","description":"Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."}}}},{"name":"cordis_mount","description":"Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"JavaScript body returning a temporary Plugin; evaluated now and saved nowhere."}},"required":["code"]}},{"name":"cordis_unmount","description":"Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins.","parameters":{"type":"object","properties":{"id":{"type":"string","description":"The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart."}},"required":["id"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"run_code","description":"Execute a TypeScript program against the available tools. Write the BODY of an async function (erasable syntax only; top-level `await` and `return` work) and call tools as `await tools.name(args)` per the declarations in the system prompt. Only what you print or return comes back — curate it.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"The program: the body of an async TypeScript function."},"description":{"type":"string","description":"Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."}},"required":["code","description"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return ` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return `)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
-{"type":"assistant/chunk","seq":5,"time":1783950002005,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":6,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"WORKFLOW_CHILD_OK"}}}
-{"type":"assistant/chunk","seq":7,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"WORKFLOW_CHILD_OK"}}}}
-{"type":"assistant/chunk","seq":8,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
-{"type":"assistant/chunk","seq":9,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":10,"time":1783957884701,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"WORKFLOW_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"df4055a4-c1cc-4248-940d-f7fa937e2d39"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[5,6,7,8,9],"surfaceOp":"append"}
-{"type":"step/end","seq":11,"time":1783957884701,"data":{"turn":1,"step":1}}
-{"type":"turn/end","seq":12,"time":1783957884701,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"request/context","seq":5,"time":1785460681788,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":6,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":7,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"text-delta","index":0,"text":"WORKFLOW_CHILD_OK"}}}
+{"type":"assistant/chunk","seq":8,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"WORKFLOW_CHILD_OK"}}}}
+{"type":"assistant/chunk","seq":9,"time":1783957884701,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":10,"time":1785460681788,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":11,"time":1785460681788,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"WORKFLOW_CHILD_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"5f7d1faa-00cf-4af1-9f94-ff8409be276b"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[6,7,8,9,10],"surfaceOp":"append"}
+{"type":"step/end","seq":12,"time":1785460681788,"data":{"turn":1,"step":1}}
+{"type":"turn/end","seq":13,"time":1785460681788,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.jsonl b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.jsonl
index 3f991a88a4..1f9f94fa0c 100644
--- a/examples/headless-agent/tests/snapshots/advanced-toolchain/session.jsonl
+++ b/examples/headless-agent/tests/snapshots/advanced-toolchain/session.jsonl
@@ -1,66 +1,67 @@
 {"type":"session","version":0,"id":"11111111-1111-4111-8111-111111111111","createdAt":1783950000000,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":1783957884479,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":1783957884479,"data":{"content":[{"type":"text","text":"Run this advanced flow exactly once: try a no-op temporary Cordis Plugin named snapshot-marker; use run_code to inspect the live temporary Plugins through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; stop dyn-1; then reply with exactly ADVANCED_HEADLESS_OK."}],"source":{"kind":"user"},"role":"user","id":"0dda35fe-e148-4400-b837-2f6e6fe40ae6"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1783957884479,"data":{"content":[{"type":"text","text":"Run this advanced flow exactly once: try a no-op temporary Cordis Plugin named snapshot-marker; use run_code to inspect the live temporary Plugins through tools.cordis_inspect; delegate once to a direct spawn child; run one workflow that delegates to another spawn child; stop dyn-1; then reply with exactly ADVANCED_HEADLESS_OK."}],"source":{"kind":"user"},"role":"user","id":"50d7fdd8-0423-43a2-b8f4-4aef2829c82e"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1783957884479,"data":{"title":"Run this advanced flow exactly","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1783957884486,"data":{"turn":1,"step":1}}
 {"type":"request/header","seq":4,"time":1783957884486,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}.\n\nVerify your work by running the code or tests. Keep answers brief and factual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.\n\n## Writing code for run_code\n\nPass `run_code` the body of an async TypeScript function (erasable syntax only — no `enum` or namespaces; type annotations are advisory, the code runs type-stripped). Inside the program:\n\n- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools[\"my-tool\"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.\n- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.\n- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.\n- Emit results with `return` and/or `console.log(...)`. ONLY what you print or return comes back to you — intermediate tool results never enter the conversation, so extract just what you need.\n\nThe available tools:\n\n```ts\ntype JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }\n\ninterface ToolArgsMap {\n  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under  mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. */\n  bash: {\n    /** The bash command to execute. */\n    command: string;\n    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\". */\n    description: string;\n    /** Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry. */\n    timeoutMs?: number;\n    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */\n    workdir?: string;\n    /** Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies. */\n    run_in_background?: boolean;\n  } & Record;\n  /** Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc. */\n  cordis_inspect: {\n    /** Limit the report to one section. Omit for all sections. */\n    what?: \"services\" | \"plugins\" | \"tools\" | \"temporary\" | \"api\" | \"events\";\n    /** Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\". */\n    name?: string;\n  } & Record;\n  /** Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime. */\n  cordis_mount: {\n    /** JavaScript body returning a temporary Plugin; evaluated now and saved nowhere. */\n    code: string;\n  } & Record;\n  /** Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins. */\n  cordis_unmount: {\n    /** The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart. */\n    id: string;\n  } & Record;\n  /** Edit an existing UTF-8 text file by replacing literal text. */\n  edit: {\n    /** Path to edit, resolved by the filesystem backend. */\n    file_path: string;\n    /** Literal text to replace. Must match exactly. */\n    old_string: string;\n    /** Literal replacement text. Use an empty string to delete the match. */\n    new_string: string;\n    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */\n    replace_all?: boolean;\n  } & Record;\n  /** Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools. */\n  ralph: {\n    /** The immutable completion objective for every fresh Ralph round. */\n    objective: string;\n    /** Optional positive safe-integer round cap, bounded by the deployment ceiling. */\n    maxRounds?: number;\n  } & Record;\n  /** Read a UTF-8 text file and return line-numbered content. */\n  read: {\n    /** Path to read, resolved by the filesystem backend. */\n    file_path: string;\n    /** 1-based first line to return. Defaults to 1. */\n    offset?: number;\n    /** Maximum number of lines to return. Defaults to 2000. */\n    limit?: number;\n  } & Record;\n  /** Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill. */\n  skill: {\n    /** The exact skill name from the available skills list. */\n    name: string;\n  } & Record;\n  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record;\n  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`. */\n  subagent_fork: {\n    /** A short (3-5 word) description of the delegated task, for display. */\n    description: string;\n    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */\n    prompt: string;\n    /** Run as a background task and return its id; collect with task_output or stop with task_kill. */\n    run_in_background?: boolean;\n  } & Record;\n  /** Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops. */\n  task_kill: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Optional short reason, recorded in the log and forwarded to the task. */\n    reason?: string;\n  } & Record;\n  /** List your background tasks (running and finished) with their ids, kinds, and statuses. */\n  task_list: Record;\n  /** Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap. */\n  task_output: {\n    /** Task id returned by the tool that started the background work. */\n    task_id: string;\n    /** Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive. */\n    wait?: boolean;\n    /** Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum. */\n    timeout_ms?: number;\n  } & Record;\n  /** Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished). */\n  todo_write: {\n    /** The COMPLETE task list, replacing any previous list. */\n    todos: ({\n      /** What the task is — a short imperative line. */\n      content: string;\n      /** pending (not started) | in_progress (now) | completed (done). */\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n  } & Record;\n  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. The workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return ` — the value must be JSON-serializable and is this tool's result. Script-body hooks: - `agent(prompt, opts?): Promise` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly. - `pipeline(items, ...stages): Promise` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`. Constraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes. */\n  workflow: {\n    /** The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return `). */\n    script: string;\n    /** The workflow identity block (plain JSON — never code). */\n    meta: {\n      /** Short kebab-case workflow name. */\n      name: string;\n      /** One-line description of what the workflow does. */\n      description: string;\n      /** Optional guidance on when this workflow applies. */\n      whenToUse?: string;\n      /** Optional phase declarations matched by phase() calls. */\n      phases?: ({\n        /** The phase title phase() calls match by exact string. */\n        title: string;\n        /** Optional one-line description of the phase. */\n        detail?: string;\n        /** Optional provider override this phase is expected to use. */\n        provider?: string;\n        /** Optional model override this phase is expected to use. */\n        model?: string;\n      } & Record)[];\n    } & Record;\n    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}). */\n    args?: Record;\n  } & Record;\n  /** Create or fully replace a UTF-8 text file. */\n  write: {\n    /** Path to write, resolved by the filesystem backend. */\n    file_path: string;\n    /** Full UTF-8 text content to write. */\n    content: string;\n  } & Record;\n}\n\ninterface ToolOutputMap {\n  bash: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    exitCode: number | null;\n    signal: string | null;\n    timedOut: boolean;\n    aborted: boolean;\n    timeoutMs: number;\n    stdout: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    stderr: {\n      text: string;\n      truncated: boolean;\n      spillPath?: string;\n    };\n    sandbox?: {\n      mode: string;\n      denied: boolean;\n      enforcement?: string;\n      runnerFailed?: boolean;\n    };\n  };\n  cordis_inspect: string;\n  cordis_mount: {\n    id: string;\n    pluginName: string;\n    state: \"pending\" | \"loading\" | \"active\" | \"failed\" | \"disposed\" | \"unloading\";\n    provides: string[];\n    waitingFor: string[];\n  };\n  cordis_unmount: {\n    id: string;\n    pluginName: string;\n  };\n  edit: {\n    path: string;\n    before: string;\n    after: string;\n  };\n  ralph: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  read: {\n    path: string;\n    offset: number;\n    lines: {\n      number: number;\n      text: string;\n    }[];\n    totalLines: number;\n  };\n  skill: {\n    name: string;\n    provider: string;\n    resourceBase?: {\n      kind: \"directory\";\n      path: string;\n    } | {\n      kind: \"url\";\n      url: string;\n    } | {\n      kind: \"opaque\";\n      description: string;\n    };\n    content: string;\n  };\n  subagent: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  subagent_fork: {\n    kind: \"background\";\n    taskId: string;\n  } | {\n    kind: \"foreground\";\n    runId: string;\n    output: JsonValue[];\n  };\n  task_kill: {\n    outcome: \"cancellation-requested\" | \"already-finished\";\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  task_list: ({\n    id: string;\n    kind: string;\n    label: string;\n    status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n    detail?: string;\n    startedAt: number;\n    finishedAt?: number;\n  })[];\n  task_output: {\n    text: string;\n    task: {\n      id: string;\n      kind: string;\n      label: string;\n      status: \"running\" | \"stopping\" | \"completed\" | \"killed\" | \"failed\";\n      detail?: string;\n      startedAt: number;\n      finishedAt?: number;\n    };\n  };\n  todo_write: {\n    todos: ({\n      content: string;\n      status: \"pending\" | \"in_progress\" | \"completed\";\n    })[];\n    counts: {\n      pending: number;\n      inProgress: number;\n      completed: number;\n    };\n  };\n  workflow: {\n    runId: string;\n    agentsStarted: number;\n    result: JsonValue;\n  };\n  write: {\n    path: string;\n    operation: \"create\" | \"update\";\n    before: string | null;\n    after: string;\n  };\n}\n\ntype ToolName = keyof ToolOutputMap\n\ndeclare class ToolCallError extends Error {\n  readonly name: \"ToolCallError\";\n  readonly toolName: ToolName;\n}\n\ndeclare const tools: {\n  [K in ToolName]: (args: ToolArgsMap[K]) => Promise;\n}\n```","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under  mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"cordis_inspect","description":"Inspect the live Cordis runtime in the current DSH process. Read-only. Sections: `services` (every provided ctx service and the plugin fiber that owns it), `plugins` (all live plugin fibers with their lifecycle states), `tools` (the model-facing tools currently registered, i.e. what you can call), `temporary` (only temporary Plugins created by cordis_mount: id, name, state, provided services, awaited services, and lifetime), `api` (method signatures AND argument/return type shapes for every LIVE service — read this before writing plugin code that calls a service), `events` (every harness event with its dispatch mode and exact signature — pick listener targets here). Temporary Plugins exist only in memory, remain active across later turns, and disappear after cordis_unmount, toolset unload, or DSH restart; they are not restored automatically. The `temporary` section is a subset of `plugins`. Omit `what` to get all six sections. With `what:\"api\"` or `what:\"events\"`, pass an exact `name` to narrow to one service/event and include its original source JSDoc.","parameters":{"type":"object","properties":{"what":{"type":"string","description":"Limit the report to one section. Omit for all sections.","enum":["services","plugins","tools","temporary","api","events"]},"name":{"type":"string","description":"Exact service key or event name whose original JSDoc to include; valid only with what:\"api\" or what:\"events\"."}}}},{"name":"cordis_mount","description":"Mount a temporary Cordis Plugin in the current DSH process. This creates an in-memory runtime Plugin, not an installed or configured Plugin. It remains active across later turns until cordis_unmount, toolset unload, or DSH restart. It does not create files, install a package, change cordis.yml or personal/project config, survive restart, or automatically become permanent. To keep it, ask the Agent to implement a normal local, project, or repository Plugin through the regular development workflow. It may affect other sessions in the same process; the sandbox is not a security boundary, and injected services reach the real runtime. `code` runs now as the body of an async JavaScript function in an isolated sandbox and MUST `return` a plugin. Two forms: FUNCTION form `return (ctx) => { … }` — declares no inject, so it can register tools, listen to events, and provide services, but reaching ANY service (e.g. ctx.bash) throws; use it only when you need no services. OBJECT form `return { name?, inject: ['bash', 'llm', …], apply(ctx) { … } }` — declares dependencies, and cordis activates the plugin only after the services exist; PREFER this form. You may reach ONLY the services you list in inject: an undeclared service throws even if it exists, because an undeclared dependency would not be cleaned up if its provider is unmounted. BEFORE calling a service from your code, read cordis_inspect what:\"api\" — it lists method signatures AND the type shapes of their arguments/returns (do not guess a field's type; e.g. a bash run's stdout is an object, not a string). Inside `apply`, use the standard cordis API: `ctx.on(event, listener)` to observe events (see cordis_inspect what:\"events\"), or call `harness.registerTool(ctx, harness.defineTool({ name, description, parameters: { text: { type: 'string', required: true } }, output: { schema: { type: 'string' }, render(_args, value) { return [{ type: 'text', text: value }] } }, async execute(args) { return args.text } }))` to give yourself a new tool — it becomes callable on your NEXT step. Tool parameters: each key IS a property — { type: 'string'|'number'|'integer'|'boolean'|'null'|'object'|'array'|'json', required?: true, description?, enum?, const?, items?, properties? }; every direct DSL object declares additionalProperties: true|false, and oneOf: [schema, schema, ...] replaces type for an exact-one union. A raw JSON-Schema { type: 'object', properties, required?: […] } wrapper is also accepted with open-by-default objects. A tool's `execute` MUST return the lossless JSON value declared by `output.schema`; `output.render(args, value)` separately returns Native/model content blocks. Temporary Plugins can COMPOSE: one Plugin may `ctx.provide('name', value)` a service and another may declare `inject: ['name']` to consume it — the consumer stays pending until the provider exists and returns to pending when the provider is unmounted. Everything registered inside `apply` is cleaned up automatically by cordis_unmount. Sandbox globals: `console` (tagged `[cordis:]`, writes through to the harness terminal), `harness.defineTool`, `harness.registerTool`, `btoa`, `atob`, `TextEncoder`, `TextDecoder`. Node APIs are DISABLED — do filesystem/network/timer work through the cordis services, never Node built-ins: `require`, `setTimeout`/`setInterval`, and `fetch` throw redirect errors; `process` and `Buffer` are undefined. Instead use inject: ['fs'] + ctx.fs for files, inject: ['web'] + ctx.web for HTTP, inject: ['bash'] + ctx.bash for processes, and inject: ['timer'] + ctx.setTimeout/ctx.setInterval for timing (fiber effects, auto-cleaned when unmounted) — cordis_inspect what:\"api\" shows what THIS runtime provides. Write PLAIN JavaScript, not TypeScript (no `as`, no type annotations). Cautions: (1) waterfall events (e.g. tools/pre-execute) hand the listener a trailing `next` callback which MUST be called — returning without `next()` VETOES the call; prefer plain notification events unless you intend to intercept. (2) Never await something that only resolves after the current turn (your code runs INSIDE a tool call of that turn — it would deadlock). (3) Your `ctx` is a restricted façade: you can register tools, observe events, provide/consume services, and use timers, but framework internals (ctx.root, ctx.fiber, ctx.extend, ctx.plugin, …) are withheld. It is not a security boundary though — the services you inject (e.g. ctx.bash) reach the real runtime.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"JavaScript body returning a temporary Plugin; evaluated now and saved nowhere."}},"required":["code"]}},{"name":"cordis_unmount","description":"Unmount a current-process temporary Plugin created by cordis_mount. Waits for its tools, listeners, services, timers, and other owned effects to clean up completely. Only dyn-N temporary ids are accepted; this cannot remove Loader, configured, or installed Plugins.","parameters":{"type":"object","properties":{"id":{"type":"string","description":"The temporary Plugin id returned by cordis_mount (for example \"dyn-1\"); valid only in this process and invalid after unmount or restart."}},"required":["id"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"run_code","description":"Execute a TypeScript program against the available tools. Write the BODY of an async function (erasable syntax only; top-level `await` and `return` work) and call tools as `await tools.name(args)` per the declarations in the system prompt. Only what you print or return comes back — curate it.","parameters":{"type":"object","properties":{"code":{"type":"string","description":"The program: the body of an async TypeScript function."},"description":{"type":"string","description":"Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."}},"required":["code","description"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return ` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return `)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
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diff --git a/examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.expected.jsonl
index 5a1e8b00ea..456d6c0a39 100644
--- a/examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/advanced-toolchain/stream-json.expected.jsonl
@@ -3,64 +3,65 @@
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diff --git a/examples/headless-agent/tests/snapshots/goal-tools/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/goal-tools/stream-json.expected.jsonl
index 8efcfc3bae..ff94280aa1 100644
--- a/examples/headless-agent/tests/snapshots/goal-tools/stream-json.expected.jsonl
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+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"tool/result","seq":34,"time":0,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"call_goal_get"},"content":[{"type":"tool-result","toolCallId":"call_goal_get","content":[{"type":"text","text":"{\"goal\":{\"id\":\"goal-{{sessionId}}\",\"revision\":1,\"objective\":\"Finish the headless goal-tool snapshot proof\",\"phase\":\"active\",\"roundsStarted\":0,\"maxGoalRounds\":7},\"activation\":\"armed\"}"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[33],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":35,"time":0,"data":{"turn":1,"step":3}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":36,"time":0,"data":{"turn":1,"step":4}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":37,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"text-delta","index":0,"text":"GOAL READY"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"GOAL READY"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":40,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":35,"outputTokens":2}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":41,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":42,"time":0,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"text","text":"GOAL READY"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":35,"outputTokens":2}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":43,"time":0,"data":{"turn":1,"step":4}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":44,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}
 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"GOAL READY","reason":{"kind":"completed"},"usage":{"inputTokens":100,"outputTokens":20}}
diff --git a/examples/headless-agent/tests/snapshots/missing-credential/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/missing-credential/stream-json.expected.jsonl
index 4098de697b..4f3bcd2321 100644
--- a/examples/headless-agent/tests/snapshots/missing-credential/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/missing-credential/stream-json.expected.jsonl
@@ -3,6 +3,7 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"say pong","messageSeqs":[1],"source":{"kind":"fallback"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash","maxTokens":256000,"reasoningEffort":"high"},"adapterDefaults":{"reasoningEffort":true,"maxTokens":true},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":5,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":6,"time":0,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"llm-deepseek: no API key for provider route \"deepseek-official\"; store DEEPSEEK_API_KEY through the credentials service (the web Models page writes it), export DEEPSEEK_API_KEY in the launching environment, or — as a last resort — set a literal \"apiKey\" in the llm-deepseek settings section","code":"MISSING_CREDENTIAL"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/context","seq":5,"time":0,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash","contextWindow":1000000}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":6,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":7,"time":0,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"llm-deepseek: no API key for provider route \"deepseek-official\"; store DEEPSEEK_API_KEY through the credentials service (the web Models page writes it), export DEEPSEEK_API_KEY in the launching environment, or — as a last resort — set a literal \"apiKey\" in the llm-deepseek settings section","code":"MISSING_CREDENTIAL"}}}}}
 {"type":"result","success":false,"sessionId":"{{sessionId}}","turn":1,"result":"","reason":{"kind":"error","step":1,"failure":{"message":"llm-deepseek: no API key for provider route \"deepseek-official\"; store DEEPSEEK_API_KEY through the credentials service (the web Models page writes it), export DEEPSEEK_API_KEY in the launching environment, or — as a last resort — set a literal \"apiKey\" in the llm-deepseek settings section","code":"MISSING_CREDENTIAL"}}}
diff --git a/examples/headless-agent/tests/snapshots/provider-retry/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/provider-retry/stream-json.expected.jsonl
index 08c751e319..8c6601b35d 100644
--- a/examples/headless-agent/tests/snapshots/provider-retry/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/provider-retry/stream-json.expected.jsonl
@@ -3,17 +3,18 @@
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"session/title","seq":2,"time":0,"data":{"title":"retry the transient provider failure","messageSeqs":[1],"source":{"kind":"fallback"}}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}}
 {"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":5,"time":0,"data":{"turn":1,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"llm/retry","seq":6,"time":0,"data":{"turn":1,"step":1,"provider":"deepseek-official","mode":"normal","policyKey":"[\"normal\",1,[\"RATE_LIMIT\"],1,1,0]","retry":1,"maxRetries":1,"delayMs":1,"failure":{"message":"snapshot transient failure","code":"RATE_LIMIT","status":429}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":7,"time":0,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"snapshot transient failure","code":"RATE_LIMIT","status":429}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":8,"time":0,"data":{"turn":2,"trigger":{"kind":"retry"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":9,"time":0,"data":{"turn":2,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":10,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":11,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"text-delta","index":0,"text":"RETRY_OK"}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":12,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"RETRY_OK"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":13,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":4,"outputTokens":2}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":15,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"RETRY_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":4,"outputTokens":2}},"sourceEventSeqs":[10,11,12,13,14],"surfaceOp":"append"}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":16,"time":0,"data":{"turn":2,"step":1}}}
-{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":17,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"request/context","seq":5,"time":0,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":6,"time":0,"data":{"turn":1,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"llm/retry","seq":7,"time":0,"data":{"turn":1,"step":1,"provider":"deepseek-official","mode":"normal","policyKey":"[\"normal\",1,[\"RATE_LIMIT\"],1,1,0]","retry":1,"maxRetries":1,"delayMs":1,"failure":{"message":"snapshot transient failure","code":"RATE_LIMIT","status":429}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":8,"time":0,"data":{"turn":1,"reason":{"kind":"error","step":1,"failure":{"message":"snapshot transient failure","code":"RATE_LIMIT","status":429}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":9,"time":0,"data":{"turn":2,"trigger":{"kind":"retry"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/start","seq":10,"time":0,"data":{"turn":2,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":11,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":12,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"text-delta","index":0,"text":"RETRY_OK"}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":13,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"RETRY_OK"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":4,"outputTokens":2}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"assistant/message","seq":16,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"RETRY_OK"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":4,"outputTokens":2}},"sourceEventSeqs":[11,12,13,14,15],"surfaceOp":"append"}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"step/end","seq":17,"time":0,"data":{"turn":2,"step":1}}}
+{"type":"session_event","sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":18,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}}
 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":2,"result":"RETRY_OK","reason":{"kind":"completed"},"usage":{"inputTokens":4,"outputTokens":2}}
diff --git a/examples/headless-agent/tests/snapshots/pty-tools/session.jsonl b/examples/headless-agent/tests/snapshots/pty-tools/session.jsonl
index efcf733281..b187ff75cc 100644
--- a/examples/headless-agent/tests/snapshots/pty-tools/session.jsonl
+++ b/examples/headless-agent/tests/snapshots/pty-tools/session.jsonl
@@ -1,74 +1,76 @@
 {"type":"session","version":0,"id":"{{sessionId}}","createdAt":0,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Exercise the six PTY tools in order, including one missing-session signal error, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"8cc78530-3ead-4c68-a38f-dcc14d6a2a82"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":0,"data":{"content":[{"type":"text","text":"Exercise the six PTY tools in order, including one missing-session signal error, then reply DONE."}],"source":{"kind":"user"},"role":"user","id":"2d9e550e-6aff-4ec5-b059-887bd34a456c"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":0,"data":{"title":"Exercise the six PTY tools","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":3,"time":0,"data":{"turn":1,"step":1}}
-{"type":"request/header","seq":4,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"You are an AI agent powered by the DeepSeek Harness SDK.\n\nYou are headless-agent, a coding assistant powered by the deepseek-v4-flash model.\n\nVerify your work by running the code or tests. Keep answers brief and\nfactual.\n\n\nUse the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.\n\nUse the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.\n\nUse the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.\n\nCheck the [exit code: N] marker on every bash result; investigate failures before moving on.\n\nUse a terminal session only when work needs persistent terminal state or interactive stdin; prefer bash/read/write/edit for bounded one-shot operations. Track every terminal session id and close sessions that no longer matter. An inferred_idle or timeout result does not prove the foreground command exited.\n\nTrack every background task id you start. You are notified in-session when a task finishes — do not busy-poll or sleep on one; keep working on independent steps and do not duplicate a running task's work. Before giving a final answer, collect every still-relevant task with task_output (set wait: true only when you are genuinely blocked on it), and task_kill tasks that stopped mattering.\n\nUse the workflow tool ONLY when the user explicitly asks for a workflow or for large multi-agent orchestration: you write a JavaScript script (the tool description documents the exact format) that fans work out across many subagents with phases and structured results. For one or two delegations, prefer plain subagent calls.\n\nUse the ralph tool ONLY when the direct human explicitly asks for a Ralph loop or fresh-agent iterative execution. Each Ralph round starts a fresh child with no conversation seed and uses the shared workspace as durable memory. Completion and blockers are worker reports, not independent evaluation. Use same-session goal tools for ordinary long-running objectives, and plain subagents or workflows for bounded delegation and fan-out.","tools":[{"name":"bash","description":"Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under  mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`.","parameters":{"type":"object","properties":{"command":{"type":"string","description":"The bash command to execute."},"description":{"type":"string","description":"Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."},"timeoutMs":{"type":"number","description":"Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."},"workdir":{"type":"string","description":"Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."},"run_in_background":{"type":"boolean","description":"Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."}},"required":["command","description"]}},{"name":"edit","description":"Edit an existing UTF-8 text file by replacing literal text.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to edit, resolved by the filesystem backend."},"old_string":{"type":"string","description":"Literal text to replace. Must match exactly."},"new_string":{"type":"string","description":"Literal replacement text. Use an empty string to delete the match."},"replace_all":{"type":"boolean","description":"Replace all matches. Defaults to false; when false, old_string must appear exactly once."}},"required":["file_path","old_string","new_string"]}},{"name":"ralph","description":"Run a foreground fresh-agent Ralph loop toward one immutable objective. Use only when the direct human explicitly asks for Ralph or fresh-agent iteration. Each round opens a new child with no parent conversation or prior child session; the shared workspace is long-term memory, and only a bounded structured report crosses rounds. The call returns when a worker reports completion or a concrete blocker, or at the round limit. Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"terminal_close","description":"Close one persistent terminal and wait until its captured owned process tree is gone.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."}},"required":["sessionId"]}},{"name":"terminal_list","description":"List persistent terminal sessions owned by the current agent.","parameters":{"type":"object","properties":{}}},{"name":"terminal_open","description":"Create a persistent, owner-isolated terminal session from a registered backend type. Use this for shell or REPL state that must survive across tool calls.","parameters":{"type":"object","properties":{"type":{"type":"string","description":"Registered terminal backend type, usually \"shell\"."},"name":{"type":"string","description":"Optional owner-local display name such as \"main\" or \"gdb\"."},"cwd":{"type":"string","description":"Initial working directory. Defaults to the deployment workspace root."}},"required":["type"]}},{"name":"terminal_read","description":"Read a bounded page of retained output from a persistent terminal without sending input.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."},"offset":{"type":"number","description":"Newest-relative line offset (default 0)."},"count":{"type":"number","description":"Requested line count (default 500; backend caps apply)."}},"required":["sessionId"]}},{"name":"terminal_send","description":"Send text to a persistent terminal. By default Enter is submitted and the call waits for a prompt, stdin wait, output silence, timeout, or session exit. Background mode returns a task id for task_output/task_kill.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id returned by terminal_open or terminal_list."},"text":{"type":"string","description":"UTF-8 text to write to the terminal."},"submit":{"type":"boolean","description":"Submit Enter after text (default true). Set false for control characters or incomplete REPL input."},"run_in_background":{"type":"boolean","description":"Return a task id immediately; collect with task_output or stop with task_kill."}},"required":["sessionId","text"]}},{"name":"terminal_signal","description":"Send an allowed signal to the current foreground process group of a persistent terminal.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."},"signal":{"type":"string","description":"Signal to deliver. Shell-targeted SIGKILL is rejected; use terminal_close.","enum":["SIGINT","SIGTERM","SIGKILL","SIGTSTP","SIGHUP"]}},"required":["sessionId","signal"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return ` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise` — run one subagent to completion. 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An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. 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Ordinary long-running same-session work belongs to goal tools.","parameters":{"type":"object","properties":{"objective":{"type":"string","description":"The immutable completion objective for every fresh Ralph round."},"maxRounds":{"type":"number","description":"Optional positive safe-integer round cap, bounded by the deployment ceiling."}},"required":["objective"]}},{"name":"read","description":"Read a UTF-8 text file and return line-numbered content.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to read, resolved by the filesystem backend."},"offset":{"type":"number","description":"1-based first line to return. Defaults to 1."},"limit":{"type":"number","description":"Maximum number of lines to return. Defaults to 2000."}},"required":["file_path"]}},{"name":"skill","description":"Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.","parameters":{"type":"object","properties":{"name":{"type":"string","description":"The exact skill name from the available skills list."}},"required":["name"]}},{"name":"subagent","description":"Delegate a self-contained task to a subagent (a separate agent that works in its own context) and return its final result. Use this to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent runs to completion and you receive only its final answer, not its intermediate steps. Give it a complete, standalone prompt: it does not see this conversation. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"subagent_fork","description":"Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn), returning only its final result. Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive only its final answer, not its intermediate steps. Set `run_in_background: true` to return a task id; collect with `task_output` and stop with `task_kill`.","parameters":{"type":"object","properties":{"description":{"type":"string","description":"A short (3-5 word) description of the delegated task, for display."},"prompt":{"type":"string","description":"The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."},"run_in_background":{"type":"boolean","description":"Run as a background task and return its id; collect with task_output or stop with task_kill."}},"required":["description","prompt"]}},{"name":"task_kill","description":"Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"reason":{"type":"string","description":"Optional short reason, recorded in the log and forwarded to the task."}},"required":["task_id"]}},{"name":"task_list","description":"List your background tasks (running and finished) with their ids, kinds, and statuses.","parameters":{"type":"object","properties":{}}},{"name":"task_output","description":"Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.","parameters":{"type":"object","properties":{"task_id":{"type":"string","description":"Task id returned by the tool that started the background work."},"wait":{"type":"boolean","description":"Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."},"timeout_ms":{"type":"number","description":"Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."}},"required":["task_id"]}},{"name":"terminal_close","description":"Close one persistent terminal and wait until its captured owned process tree is gone.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."}},"required":["sessionId"]}},{"name":"terminal_list","description":"List persistent terminal sessions owned by the current agent.","parameters":{"type":"object","properties":{}}},{"name":"terminal_open","description":"Create a persistent, owner-isolated terminal session from a registered backend type. Use this for shell or REPL state that must survive across tool calls.","parameters":{"type":"object","properties":{"type":{"type":"string","description":"Registered terminal backend type, usually \"shell\"."},"name":{"type":"string","description":"Optional owner-local display name such as \"main\" or \"gdb\"."},"cwd":{"type":"string","description":"Initial working directory. Defaults to the deployment workspace root."}},"required":["type"]}},{"name":"terminal_read","description":"Read a bounded page of retained output from a persistent terminal without sending input.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."},"offset":{"type":"number","description":"Newest-relative line offset (default 0)."},"count":{"type":"number","description":"Requested line count (default 500; backend caps apply)."}},"required":["sessionId"]}},{"name":"terminal_send","description":"Send text to a persistent terminal. By default Enter is submitted and the call waits for a prompt, stdin wait, output silence, timeout, or session exit. Background mode returns a task id for task_output/task_kill.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id returned by terminal_open or terminal_list."},"text":{"type":"string","description":"UTF-8 text to write to the terminal."},"submit":{"type":"boolean","description":"Submit Enter after text (default true). Set false for control characters or incomplete REPL input."},"run_in_background":{"type":"boolean","description":"Return a task id immediately; collect with task_output or stop with task_kill."}},"required":["sessionId","text"]}},{"name":"terminal_signal","description":"Send an allowed signal to the current foreground process group of a persistent terminal.","parameters":{"type":"object","properties":{"sessionId":{"type":"string","description":"Terminal session id."},"signal":{"type":"string","description":"Signal to deliver. Shell-targeted SIGKILL is rejected; use terminal_close.","enum":["SIGINT","SIGTERM","SIGKILL","SIGTSTP","SIGHUP"]}},"required":["sessionId","signal"]}},{"name":"todo_write","description":"Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).","parameters":{"type":"object","properties":{"todos":{"type":"array","description":"The COMPLETE task list, replacing any previous list.","items":{"type":"object","additionalProperties":false,"properties":{"content":{"type":"string","description":"What the task is — a short imperative line."},"status":{"type":"string","description":"pending (not started) | in_progress (now) | completed (done).","enum":["pending","in_progress","completed"]}},"required":["content","status"]}}},"required":["todos"]}},{"name":"workflow","description":"Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nThe workflow's identity rides the `meta` parameter as JSON: required `name` (short kebab-case) and `description` strings, optional `whenToUse` string and `phases` array (`{title, detail?, provider?, model?}`). The `script` parameter is the plain JavaScript body ONLY (NOT TypeScript, and NO `export const meta` statement — meta is a parameter, not code), running with top-level await; end with `return ` — the value must be JSON-serializable and is this tool's result.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf — no pattern/format/numeric bounds) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides (either may be provided alone). Anything else (`effort`/`isolation`/`agentType`) is rejected loudly.\n- `pipeline(items, ...stages): Promise` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. An ordinary stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) throw errors that ALWAYS kill the script — they never dissolve into a per-item `null`.\n\nConstraints: concurrency and total-agent caps apply; no filesystem, network, timers, or Node.js APIs are provided — the agents do the work, the script only coordinates them. The run executes in the foreground: this call returns when the whole script finishes.","parameters":{"type":"object","properties":{"script":{"type":"string","description":"The plain-JS workflow script body (top-level await allowed; NO `export const meta` statement; end with `return `)."},"meta":{"type":"object","description":"The workflow identity block (plain JSON — never code).","additionalProperties":true,"properties":{"name":{"type":"string","description":"Short kebab-case workflow name."},"description":{"type":"string","description":"One-line description of what the workflow does."},"whenToUse":{"type":"string","description":"Optional guidance on when this workflow applies."},"phases":{"type":"array","description":"Optional phase declarations matched by phase() calls.","items":{"type":"object","additionalProperties":true,"properties":{"title":{"type":"string","description":"The phase title phase() calls match by exact string."},"detail":{"type":"string","description":"Optional one-line description of the phase."},"provider":{"type":"string","description":"Optional provider override this phase is expected to use."},"model":{"type":"string","description":"Optional model override this phase is expected to use."}},"required":["title"]}}},"required":["name","description"]},"args":{"type":"object","description":"Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).","additionalProperties":true}},"required":["script","meta"]}},{"name":"write","description":"Create or fully replace a UTF-8 text file.","parameters":{"type":"object","properties":{"file_path":{"type":"string","description":"Path to write, resolved by the filesystem backend."},"content":{"type":"string","description":"Full UTF-8 text content to write."}},"required":["file_path","content"]}}]},"reason":"initial"}}
+{"type":"request/context","seq":6,"time":1785487564325,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-spawn","name":"terminal_open","argumentsDelta":"{\"type\":\"shell\",\"name\":\"main\"}"}}}
+{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}}}}
+{"type":"assistant/chunk","seq":10,"time":1785464685155,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":11,"time":1785487564326,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":12,"time":1785487564326,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"b03f1f00-1432-41c6-8dbb-c8862bf8e45a"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[7,8,9,10,11],"surfaceOp":"append"}
+{"type":"tool/call","seq":13,"time":1785487564326,"data":{"turn":1,"step":1,"callId":"pty-spawn","name":"terminal_open","arguments":"{\"type\":\"shell\",\"name\":\"main\"}"}}
+{"type":"tool/result","seq":14,"time":1785487564336,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"pty-spawn"},"content":[{"type":"tool-result","toolCallId":"pty-spawn","content":[{"type":"text","text":"started terminal session pty-1 (main) [type: shell]\ndsh> "}],"isError":false}],"role":"user","id":"e55df4b9-6eae-411c-8d93-2d1e22e96088"}},"sourceEventSeqs":[13],"surfaceOp":"append"}
+{"type":"step/end","seq":15,"time":1785487564336,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":16,"time":1785487564343,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-send","name":"terminal_send","argumentsDelta":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}}}
+{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-send","name":"terminal_send","arguments":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}}}}
+{"type":"assistant/chunk","seq":20,"time":1785464685175,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":21,"time":1785487564345,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":22,"time":1785487564345,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-send","name":"terminal_send","arguments":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"0695daf5-0341-4e64-a8e2-e436595b30c7"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[17,18,19,20,21],"surfaceOp":"append"}
+{"type":"tool/call","seq":23,"time":1785487564345,"data":{"turn":1,"step":2,"callId":"pty-send","name":"terminal_send","arguments":"{\"sessionId\":\"pty-1\",\"text\":\"printf 'PTY_OK\\\\n'\"}"}}
+{"type":"tool/result","seq":24,"time":1785487564352,"data":{"turn":1,"step":2,"message":{"source":{"kind":"tool","callId":"pty-send"},"content":[{"type":"tool-result","toolCallId":"pty-send","content":[{"type":"text","text":"K\ndsh> \n[wait: stdin_read]\n[session: running]\n[output truncated]"}],"isError":false}],"role":"user","id":"66d32fdd-7471-4112-9df9-1e846675d2f1"},"meta":{"viewport":"printf 'PTY_OK\\n'\nPTY_OK\ndsh> ","waitReason":"stdin_read","sessionStatus":{"kind":"running"},"truncated":false}},"sourceEventSeqs":[23],"surfaceOp":"append"}
+{"type":"step/end","seq":25,"time":1785487564352,"data":{"turn":1,"step":2}}
+{"type":"step/start","seq":26,"time":1785487564359,"data":{"turn":1,"step":3}}
+{"type":"assistant/chunk","seq":27,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":28,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-read","name":"terminal_read","argumentsDelta":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}}}
+{"type":"assistant/chunk","seq":29,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}}}}
+{"type":"assistant/chunk","seq":30,"time":1785464685190,"data":{"turn":1,"step":3,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":31,"time":1785487564360,"data":{"turn":1,"step":3,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":32,"time":1785487564360,"data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"1f204a7d-f757-474d-bcb0-d41a721ec500"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[27,28,29,30,31],"surfaceOp":"append"}
+{"type":"tool/call","seq":33,"time":1785487564361,"data":{"turn":1,"step":3,"callId":"pty-read","name":"terminal_read","arguments":"{\"sessionId\":\"pty-1\",\"offset\":0,\"count\":20}"}}
+{"type":"tool/result","seq":34,"time":1785487564368,"data":{"turn":1,"step":3,"message":{"source":{"kind":"tool","callId":"pty-read"},"content":[{"type":"tool-result","toolCallId":"pty-read","content":[{"type":"text","text":"dsh> printf 'PTY_OK\\n'\nPTY_OK\ndsh> \n[lines: 0-3 of 3]"}],"isError":false}],"role":"user","id":"fbff70b9-9350-4b3d-a7c2-960c55f16d95"}},"sourceEventSeqs":[33],"surfaceOp":"append"}
+{"type":"step/end","seq":35,"time":1785487564369,"data":{"turn":1,"step":3}}
+{"type":"step/start","seq":36,"time":1785487564375,"data":{"turn":1,"step":4}}
+{"type":"assistant/chunk","seq":37,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":38,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-signal","name":"terminal_signal","argumentsDelta":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}}
+{"type":"assistant/chunk","seq":39,"time":0,"data":{"turn":1,"step":4,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}}}
+{"type":"assistant/chunk","seq":40,"time":1785464685207,"data":{"turn":1,"step":4,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":41,"time":1785487564377,"data":{"turn":1,"step":4,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":42,"time":1785487564377,"data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"6ad41c1e-2823-41ab-a3de-e4c9413840e7"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[37,38,39,40,41],"surfaceOp":"append"}
+{"type":"tool/call","seq":43,"time":1785487564377,"data":{"turn":1,"step":4,"callId":"pty-signal","name":"terminal_signal","arguments":"{\"sessionId\":\"pty-missing\",\"signal\":\"SIGINT\"}"}}
+{"type":"tool/result","seq":44,"time":1785487564384,"data":{"turn":1,"step":4,"message":{"source":{"kind":"tool","callId":"pty-signal"},"content":[{"type":"tool-result","toolCallId":"pty-signal","content":[{"type":"text","text":"Error: unknown PTY session pty-missing"}],"isError":true}],"role":"user","id":"7ac26b80-eb10-49ed-acf3-a665b9dd7ee3"}},"sourceEventSeqs":[43],"surfaceOp":"append"}
+{"type":"step/end","seq":45,"time":1785487564385,"data":{"turn":1,"step":4}}
+{"type":"step/start","seq":46,"time":1785487564392,"data":{"turn":1,"step":5}}
+{"type":"assistant/chunk","seq":47,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":48,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-kill","name":"terminal_close","argumentsDelta":"{\"sessionId\":\"pty-1\"}"}}}
+{"type":"assistant/chunk","seq":49,"time":0,"data":{"turn":1,"step":5,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}}}}
+{"type":"assistant/chunk","seq":50,"time":1785464685224,"data":{"turn":1,"step":5,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":51,"time":1785487564393,"data":{"turn":1,"step":5,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":52,"time":1785487564393,"data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"c81bbc58-853a-4143-b6cb-edd4301e042c"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[47,48,49,50,51],"surfaceOp":"append"}
+{"type":"tool/call","seq":53,"time":1785487564393,"data":{"turn":1,"step":5,"callId":"pty-kill","name":"terminal_close","arguments":"{\"sessionId\":\"pty-1\"}"}}
+{"type":"tool/result","seq":54,"time":1785487564400,"data":{"turn":1,"step":5,"message":{"source":{"kind":"tool","callId":"pty-kill"},"content":[{"type":"tool-result","toolCallId":"pty-kill","content":[{"type":"text","text":"closed terminal session pty-1"}],"isError":false}],"role":"user","id":"d3704a32-31e0-4251-bbe5-54a751c91102"}},"sourceEventSeqs":[53],"surfaceOp":"append"}
+{"type":"step/end","seq":55,"time":1785487564400,"data":{"turn":1,"step":5}}
+{"type":"step/start","seq":56,"time":1785487564407,"data":{"turn":1,"step":6}}
+{"type":"assistant/chunk","seq":57,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":58,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"tool-call-delta","index":0,"id":"pty-list","name":"terminal_list","argumentsDelta":"{}"}}}
+{"type":"assistant/chunk","seq":59,"time":0,"data":{"turn":1,"step":6,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"pty-list","name":"terminal_list","arguments":"{}"}}}}
+{"type":"assistant/chunk","seq":60,"time":1785464685239,"data":{"turn":1,"step":6,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":61,"time":1785487564409,"data":{"turn":1,"step":6,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":62,"time":1785487564409,"data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"tool-call","id":"pty-list","name":"terminal_list","arguments":"{}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"04bb9b2b-f9f0-4c47-a1f1-046d985ed826"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[57,58,59,60,61],"surfaceOp":"append"}
+{"type":"tool/call","seq":63,"time":1785487564409,"data":{"turn":1,"step":6,"callId":"pty-list","name":"terminal_list","arguments":"{}"}}
+{"type":"tool/result","seq":64,"time":1785487564415,"data":{"turn":1,"step":6,"message":{"source":{"kind":"tool","callId":"pty-list"},"content":[{"type":"tool-result","toolCallId":"pty-list","content":[{"type":"text","text":"(no terminal sessions)"}],"isError":false}],"role":"user","id":"79f388b8-88c4-412f-a8da-3465bb643f5f"}},"sourceEventSeqs":[63],"surfaceOp":"append"}
+{"type":"step/end","seq":65,"time":1785487564415,"data":{"turn":1,"step":6}}
+{"type":"step/start","seq":66,"time":1785487564422,"data":{"turn":1,"step":7}}
+{"type":"assistant/chunk","seq":67,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":68,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"text-delta","index":0,"text":"DONE"}}}
+{"type":"assistant/chunk","seq":69,"time":0,"data":{"turn":1,"step":7,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}}}
+{"type":"assistant/chunk","seq":70,"time":1785464685256,"data":{"turn":1,"step":7,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":3}}}}
+{"type":"assistant/chunk","seq":71,"time":1785487564424,"data":{"turn":1,"step":7,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":72,"time":1785487564424,"data":{"turn":1,"step":7,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"8b8d69b6-3103-4882-9031-c55f7f004188"},"usage":{"inputTokens":10,"outputTokens":3}},"sourceEventSeqs":[67,68,69,70,71],"surfaceOp":"append"}
+{"type":"step/end","seq":73,"time":1785487564424,"data":{"turn":1,"step":7}}
+{"type":"turn/end","seq":74,"time":1785487564424,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/snapshots/pty-tools/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/pty-tools/stream-json.expected.jsonl
index 3e8dd6da97..2ad81eef02 100644
--- a/examples/headless-agent/tests/snapshots/pty-tools/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/pty-tools/stream-json.expected.jsonl
@@ -1,74 +1,76 @@
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diff --git a/examples/headless-agent/tests/snapshots/ralph-loop/stream-json.expected.jsonl b/examples/headless-agent/tests/snapshots/ralph-loop/stream-json.expected.jsonl
index 2a03b1f30c..8d0e2aac10 100644
--- a/examples/headless-agent/tests/snapshots/ralph-loop/stream-json.expected.jsonl
+++ b/examples/headless-agent/tests/snapshots/ralph-loop/stream-json.expected.jsonl
@@ -3,22 +3,23 @@
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 {"type":"result","success":true,"sessionId":"{{sessionId}}","turn":1,"result":"RALPH SNAPSHOT COMPLETE","reason":{"kind":"completed"},"usage":{"inputTokens":50,"outputTokens":12}}
diff --git a/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/child.expected.jsonl b/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/child.expected.jsonl
index 131428ab32..e4b3cc3f88 100644
--- a/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/child.expected.jsonl
+++ b/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/child.expected.jsonl
@@ -3,23 +3,25 @@
 {"type":"turn/start","seq":1,"time":0,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":2,"time":0,"data":{"content":[{"type":"text","text":"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
 {"type":"session/title","seq":3,"time":0,"data":{"title":"Use the write tool exactly","messageSeqs":[2],"source":{"kind":"fallback"}}}
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-{"type":"assistant/chunk","seq":6,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":7,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"child-write","name":"write","argumentsDelta":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}}}
-{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}}}}
-{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
-{"type":"assistant/chunk","seq":10,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":11,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[6,7,8,9,10],"surfaceOp":"append"}
-{"type":"tool/call","seq":12,"time":0,"data":{"turn":1,"step":1,"callId":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}}
-{"type":"tool/result","seq":13,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"child-write"},"content":[{"type":"tool-result","toolCallId":"child-write","content":[{"type":"text","text":"Error: [sandbox: file access denied under read-only mode]\n[sandbox: escalation available — retry this exact operation once with sandbox_permissions (the narrowest wider mode that suffices) + justification; the approval prompt asks the user]"}],"isError":true}],"role":"user","id":"{{sessionId}}"},"error":{"name":"FsError","code":"FS_SANDBOX_DENIED"}},"sourceEventSeqs":[12],"surfaceOp":"append"}
-{"type":"step/end","seq":14,"time":0,"data":{"turn":1,"step":1}}
-{"type":"step/start","seq":15,"time":0,"data":{"turn":1,"step":2}}
-{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":17,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}}}
-{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}}}}
-{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
-{"type":"assistant/chunk","seq":20,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":21,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[16,17,18,19,20],"surfaceOp":"append"}
-{"type":"step/end","seq":22,"time":0,"data":{"turn":1,"step":2}}
-{"type":"turn/end","seq":23,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"user/message","seq":4,"time":0,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
+{"type":"step/start","seq":5,"time":0,"data":{"turn":1,"step":1}}
+{"type":"request/header","seq":6,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":7,"time":0,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":8,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":9,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"child-write","name":"write","argumentsDelta":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}}}
+{"type":"assistant/chunk","seq":10,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}}}}
+{"type":"assistant/chunk","seq":11,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":12,"time":0,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":13,"time":0,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[8,9,10,11,12],"surfaceOp":"append"}
+{"type":"tool/call","seq":14,"time":0,"data":{"turn":1,"step":1,"callId":"child-write","name":"write","arguments":"{\"file_path\": \"inherited.txt\", \"content\": \"escaped\"}"}}
+{"type":"tool/result","seq":15,"time":0,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"child-write"},"content":[{"type":"tool-result","toolCallId":"child-write","content":[{"type":"text","text":"Error: [sandbox: file access denied under read-only mode]\n[sandbox: escalation available — retry this exact operation once with sandbox_permissions (the narrowest wider mode that suffices) + justification; the approval prompt asks the user]"}],"isError":true}],"role":"user","id":"{{sessionId}}"},"error":{"name":"FsError","code":"FS_SANDBOX_DENIED"}},"sourceEventSeqs":[14],"surfaceOp":"append"}
+{"type":"step/end","seq":16,"time":0,"data":{"turn":1,"step":1}}
+{"type":"step/start","seq":17,"time":0,"data":{"turn":1,"step":2}}
+{"type":"assistant/chunk","seq":18,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":19,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"text-delta","index":0,"text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}}}
+{"type":"assistant/chunk","seq":20,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}}}}
+{"type":"assistant/chunk","seq":21,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":22,"time":0,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":23,"time":0,"data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[18,19,20,21,22],"surfaceOp":"append"}
+{"type":"step/end","seq":24,"time":0,"data":{"turn":1,"step":2}}
+{"type":"turn/end","seq":25,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/parent.expected.jsonl b/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/parent.expected.jsonl
index 72dc3056c3..28e018eb2e 100644
--- a/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/parent.expected.jsonl
+++ b/examples/headless-agent/tests/subagent-inheritance-snapshots/parent-override/parent.expected.jsonl
@@ -7,23 +7,25 @@
 {"type":"turn/start","seq":5,"time":0,"data":{"turn":2,"trigger":{"kind":"message","source":{"kind":"user"}}}}
 {"type":"user/message","seq":6,"time":0,"data":{"content":[{"type":"text","text":"Delegate the write probe to a subagent."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
 {"type":"session/title","seq":7,"time":0,"data":{"title":"Tighten this session to read-only.","messageSeqs":[1],"source":{"kind":"fallback"}}}
-{"type":"step/start","seq":8,"time":0,"data":{"turn":2,"step":1}}
-{"type":"request/header","seq":9,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":10,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
-{"type":"assistant/chunk","seq":11,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"delegate-write","name":"subagent","argumentsDelta":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}}}
-{"type":"assistant/chunk","seq":12,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}}}}
-{"type":"assistant/chunk","seq":13,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
-{"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":15,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[10,11,12,13,14],"surfaceOp":"append"}
-{"type":"tool/call","seq":16,"time":0,"data":{"turn":2,"step":1,"callId":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}}
-{"type":"tool/result","seq":17,"time":0,"data":{"turn":2,"step":1,"message":{"source":{"kind":"tool","callId":"delegate-write"},"content":[{"type":"tool-result","toolCallId":"delegate-write","content":[{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[16],"surfaceOp":"append"}
-{"type":"step/end","seq":18,"time":0,"data":{"turn":2,"step":1}}
-{"type":"step/start","seq":19,"time":0,"data":{"turn":2,"step":2}}
-{"type":"assistant/chunk","seq":20,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
-{"type":"assistant/chunk","seq":21,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"text-delta","index":0,"text":"The delegated child was denied by the sandbox. PARENT_DONE"}}}
-{"type":"assistant/chunk","seq":22,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"The delegated child was denied by the sandbox. PARENT_DONE"}}}}
-{"type":"assistant/chunk","seq":23,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
-{"type":"assistant/chunk","seq":24,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
-{"type":"assistant/message","seq":25,"time":0,"data":{"turn":2,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"The delegated child was denied by the sandbox. PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[20,21,22,23,24],"surfaceOp":"append"}
-{"type":"step/end","seq":26,"time":0,"data":{"turn":2,"step":2}}
-{"type":"turn/end","seq":27,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}
+{"type":"user/message","seq":8,"time":0,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}
+{"type":"step/start","seq":9,"time":0,"data":{"turn":2,"step":1}}
+{"type":"request/header","seq":10,"time":0,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
+{"type":"request/context","seq":11,"time":0,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
+{"type":"assistant/chunk","seq":12,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
+{"type":"assistant/chunk","seq":13,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"tool-call-delta","index":0,"id":"delegate-write","name":"subagent","argumentsDelta":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}}}
+{"type":"assistant/chunk","seq":14,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}}}}
+{"type":"assistant/chunk","seq":15,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":16,"time":0,"data":{"turn":2,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
+{"type":"assistant/message","seq":17,"time":0,"data":{"turn":2,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[12,13,14,15,16],"surfaceOp":"append"}
+{"type":"tool/call","seq":18,"time":0,"data":{"turn":2,"step":1,"callId":"delegate-write","name":"subagent","arguments":"{\"description\": \"Delegated write probe\", \"prompt\": \"Use the write tool exactly once with file_path set to exactly the relative path inherited.txt and content escaped. If the write is denied, reply with the single word CHILD_DENIED and the denial marker line; do not retry and do not request escalation. If it succeeds, reply CHILD_WROTE.\"}"}}
+{"type":"tool/result","seq":19,"time":0,"data":{"turn":2,"step":1,"message":{"source":{"kind":"tool","callId":"delegate-write"},"content":[{"type":"tool-result","toolCallId":"delegate-write","content":[{"type":"text","text":"CHILD_DENIED [sandbox: file access denied under read-only mode]"}],"isError":false}],"role":"user","id":"{{sessionId}}"}},"sourceEventSeqs":[18],"surfaceOp":"append"}
+{"type":"step/end","seq":20,"time":0,"data":{"turn":2,"step":1}}
+{"type":"step/start","seq":21,"time":0,"data":{"turn":2,"step":2}}
+{"type":"assistant/chunk","seq":22,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"text"}}}
+{"type":"assistant/chunk","seq":23,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"text-delta","index":0,"text":"The delegated child was denied by the sandbox. PARENT_DONE"}}}
+{"type":"assistant/chunk","seq":24,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"The delegated child was denied by the sandbox. PARENT_DONE"}}}}
+{"type":"assistant/chunk","seq":25,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":10,"outputTokens":5}}}}
+{"type":"assistant/chunk","seq":26,"time":0,"data":{"turn":2,"step":2,"chunk":{"type":"finish","reason":{"kind":"stop"}}}}
+{"type":"assistant/message","seq":27,"time":0,"data":{"turn":2,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"The delegated child was denied by the sandbox. PARENT_DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{sessionId}}"},"usage":{"inputTokens":10,"outputTokens":5}},"sourceEventSeqs":[22,23,24,25,26],"surfaceOp":"append"}
+{"type":"step/end","seq":28,"time":0,"data":{"turn":2,"step":2}}
+{"type":"turn/end","seq":29,"time":0,"data":{"turn":2,"reason":{"kind":"completed"}}}
diff --git a/examples/headless-agent/tests/subagent-inheritance.snapshot.ts b/examples/headless-agent/tests/subagent-inheritance.snapshot.ts
index 02c96cac15..a94e9716d3 100644
--- a/examples/headless-agent/tests/subagent-inheritance.snapshot.ts
+++ b/examples/headless-agent/tests/subagent-inheritance.snapshot.ts
@@ -97,6 +97,26 @@ describe('parent-only override inheritance snapshot', () => {
           data: { mode: 'read-only', source: 'delegation' },
         })
 
+        const runtimeContexts = (content: string): string[] => content.trimEnd().split('\n').flatMap((line) => {
+          const record = JSON.parse(line) as {
+            type?: string
+            data?: { source?: { kind?: string; plugin?: string }; content?: Array<{ type?: string; text?: unknown }> }
+          }
+          if (record.type !== 'user/message'
+            || record.data?.source?.kind !== 'plugin'
+            || record.data.source.plugin !== '@deepseek-ai/dsh-system-prompt') return []
+          return record.data.content?.flatMap(block => block.type === 'text' && typeof block.text === 'string' ? [block.text] : []) ?? []
+        })
+        const policyContexts = [...runtimeContexts(parent), ...runtimeContexts(child)]
+        expect(policyContexts).toHaveLength(2)
+        for (const context of policyContexts) {
+          expect(context).toContain('Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode.')
+          expect(context).toContain('Do not refuse a required modification from this policy alone')
+          expect(context).not.toContain('write and edit tools')
+          expect(context).not.toContain('one-shot bash commands')
+          expect(context).not.toContain('terminal sessions')
+        }
+
         const context: NormalizeContext = { sessionIds: [sessionId, String(headerOf(child).id)], cwd }
         const normalizedParent = scrubRequestHeaders(normalizeSessionLog(parent, context))
         const normalizedChild = scrubRequestHeaders(normalizeSessionLog(child, context))
diff --git a/examples/jsonrpc-agent/tests/sdk.snapshot.ts b/examples/jsonrpc-agent/tests/sdk.snapshot.ts
index f749dffeb4..a8f7e3864a 100644
--- a/examples/jsonrpc-agent/tests/sdk.snapshot.ts
+++ b/examples/jsonrpc-agent/tests/sdk.snapshot.ts
@@ -59,6 +59,8 @@ interface SdkScenario {
   expectedFiles?: Readonly>
   /** Assembled model-facing tool names and required argument keys. */
   expectedTools?: Readonly>
+  /** Stable policy-context clauses the real assembled request must include or omit. */
+  policyContext?: { includes: readonly string[]; excludes: readonly string[] }
 }
 
 const SCENARIOS: SdkScenario[] = [
@@ -88,6 +90,10 @@ const SCENARIOS: SdkScenario[] = [
     configs: { live: persistentToolsLiveConfig, replay: persistentToolsReplayConfig },
     expectedFiles: { 'note.txt': 'target:\n\tnew\n' },
     expectedTools: { bash: ['command'], str_replace_editor: ['command', 'path'] },
+    policyContext: {
+      includes: ['Current DSH file policy: danger-full-access.', 'file modifications by available operations'],
+      excludes: ['write and edit tools', 'terminal sessions', 'one-shot bash commands'],
+    },
   },
 ]
 
@@ -117,7 +123,7 @@ async function persistedLogs(sessionsRoot: string): Promise {
 
 interface LoggedRequestHeader {
   type?: string
-  data?: { header?: { tools?: Array<{ name: string; parameters: { required?: string[] } }> } }
+  data?: { header?: { system?: unknown; tools?: Array<{ name: string; parameters: { required?: string[] } }> } }
 }
 
 function assembledToolRequirements(log: PersistedLog): Record {
@@ -129,6 +135,30 @@ function assembledToolRequirements(log: PersistedLog): Record
   return Object.fromEntries(tools.map(tool => [tool.name, tool.parameters.required ?? []]))
 }
 
+function assembledSystem(log: PersistedLog): string {
+  const event = log.content.trimEnd().split('\n')
+    .map(line => JSON.parse(line) as LoggedRequestHeader)
+    .find(candidate => candidate.type === 'request/header')
+  const system = event?.data?.header?.system
+  if (typeof system !== 'string') throw new Error('session log has no request/header system')
+  return system
+}
+
+function assembledPolicyContext(log: PersistedLog): string {
+  const contexts = log.content.trimEnd().split('\n').flatMap((line) => {
+    const event = JSON.parse(line) as {
+      type?: string
+      data?: { source?: { kind?: string; plugin?: string }; content?: Array<{ type?: string; text?: unknown }> }
+    }
+    if (event.type !== 'user/message'
+      || event.data?.source?.kind !== 'plugin'
+      || event.data.source.plugin !== '@deepseek-ai/dsh-system-prompt') return []
+    return event.data.content?.flatMap(block => block.type === 'text' && typeof block.text === 'string' ? [block.text] : []) ?? []
+  })
+  if (contexts.length !== 1) throw new Error(`session log has ${String(contexts.length)} runtime-context snapshots; expected one`)
+  return contexts[0] as string
+}
+
 function contextOf(logs: readonly { content: string; header: Record }[], cwd: string): NormalizeContext {
   return {
     sessionIds: logs.flatMap(log => typeof log.header.id === 'string' ? [log.header.id] : []),
@@ -359,6 +389,15 @@ describe('TypeScript SDK snapshots over the jsonrpc runtime', () => {
         if (parent === undefined) throw new Error(`${scenario.name} has no parent session log`)
         expect(assembledToolRequirements(parent)).toEqual(scenario.expectedTools)
       }
+      if (scenario.policyContext !== undefined) {
+        const parent = ordered[0]
+        if (parent === undefined) throw new Error(`${scenario.name} has no parent session log`)
+        const context = assembledPolicyContext(parent)
+        for (const clause of scenario.policyContext.includes) expect(context).toContain(clause)
+        for (const clause of scenario.policyContext.excludes) expect(context).not.toContain(clause)
+        const system = assembledSystem(parent)
+        for (const clause of scenario.policyContext.includes) expect(system).not.toContain(clause)
+      }
       if (scenario.children > 0) {
         expect(notifications.some(n => n.method === 'subagent.started')).toBe(true)
         expect(notifications.some(n => n.method === 'subagent.finished')).toBe(true)
diff --git a/examples/jsonrpc-agent/tests/snapshots/bash-tool/notifications.expected.jsonl b/examples/jsonrpc-agent/tests/snapshots/bash-tool/notifications.expected.jsonl
index 94af2458c1..e777e93585 100644
--- a/examples/jsonrpc-agent/tests/snapshots/bash-tool/notifications.expected.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/bash-tool/notifications.expected.jsonl
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diff --git a/examples/jsonrpc-agent/tests/snapshots/bash-tool/session.jsonl b/examples/jsonrpc-agent/tests/snapshots/bash-tool/session.jsonl
index c509bd6a70..05bbc0a6a9 100644
--- a/examples/jsonrpc-agent/tests/snapshots/bash-tool/session.jsonl
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diff --git a/examples/jsonrpc-agent/tests/snapshots/persistent-tools/notifications.expected.jsonl b/examples/jsonrpc-agent/tests/snapshots/persistent-tools/notifications.expected.jsonl
index 074d563844..05177d3467 100644
--- a/examples/jsonrpc-agent/tests/snapshots/persistent-tools/notifications.expected.jsonl
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diff --git a/examples/jsonrpc-agent/tests/snapshots/persistent-tools/session.jsonl b/examples/jsonrpc-agent/tests/snapshots/persistent-tools/session.jsonl
index 96abcbdfa8..3bc2fe0ded 100644
--- a/examples/jsonrpc-agent/tests/snapshots/persistent-tools/session.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/persistent-tools/session.jsonl
@@ -1,74 +1,76 @@
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diff --git a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/notifications.expected.jsonl b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/notifications.expected.jsonl
index 548c7f7178..6bff71c7fe 100644
--- a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/notifications.expected.jsonl
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diff --git a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.1.jsonl b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.1.jsonl
index 8a18c27e16..8de8b9aae0 100644
--- a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.1.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.1.jsonl
@@ -1,17 +1,18 @@
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diff --git a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.jsonl b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.jsonl
index 71462cd4fd..4547e18d6f 100644
--- a/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/subagent-spawn/session.jsonl
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diff --git a/examples/jsonrpc-agent/tests/snapshots/text-turn/notifications.expected.jsonl b/examples/jsonrpc-agent/tests/snapshots/text-turn/notifications.expected.jsonl
index bdec61152e..8f3f86fb12 100644
--- a/examples/jsonrpc-agent/tests/snapshots/text-turn/notifications.expected.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/text-turn/notifications.expected.jsonl
@@ -3,36 +3,37 @@
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+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"turn/end","seq":37,"time":0,"data":{"turn":1,"reason":{"kind":"completed"}}}}}
 {"method":"session.finished","params":{"sessionId":"{{sessionId}}","status":"ok","reason":{"kind":"completed"}}}
diff --git a/examples/jsonrpc-agent/tests/snapshots/text-turn/session.jsonl b/examples/jsonrpc-agent/tests/snapshots/text-turn/session.jsonl
index c4d7ae2c57..68d90a507c 100644
--- a/examples/jsonrpc-agent/tests/snapshots/text-turn/session.jsonl
+++ b/examples/jsonrpc-agent/tests/snapshots/text-turn/session.jsonl
@@ -1,17 +1,18 @@
 {"type":"session","version":0,"id":"sdk-snapshot-text","createdAt":1785097381464,"cwd":"{{cwd}}","delegationDepth":0}
 {"type":"turn/start","seq":0,"time":1785097381468,"data":{"turn":1,"trigger":{"kind":"message","source":{"kind":"user"}}}}
-{"type":"user/message","seq":1,"time":1785097381469,"data":{"content":[{"type":"text","text":"Reply with exactly: SDK snapshot OK"}],"source":{"kind":"user"},"role":"user","id":"4cb523e7-19c9-45d0-8799-911a78c26207"},"surfaceOp":"append"}
+{"type":"user/message","seq":1,"time":1785097381469,"data":{"content":[{"type":"text","text":"Reply with exactly: SDK snapshot OK"}],"source":{"kind":"user"},"role":"user","id":"4e9cf703-273c-4181-a1e3-4da863efb02f"},"surfaceOp":"append"}
 {"type":"session/title","seq":2,"time":1785097381471,"data":{"title":"Reply with exactly: SDK snapshot","messageSeqs":[1],"source":{"kind":"fallback"}}}
 {"type":"step/start","seq":3,"time":1785097381472,"data":{"turn":1,"step":1}}
 {"type":"request/header","seq":4,"time":1785097381472,"data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"system":"{{system}}","tools":"{{tools}}"},"reason":"initial"}}
-{"type":"assistant/chunk","seq":5,"time":1785097381978,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
-{"type":"reasoning-chunks","seq0":6,"time0":1785097381979,"data":{"turn":1,"step":1,"index":0,"dt":[138,28,27,1,0,0,24,1,0,0,0,26,0,1,25,1,0,0],"texts":["The"," user"," wants"," me"," to"," reply"," with"," exactly"," \"","SD","K"," snapshot"," OK","\"."," Let"," me"," do"," that","."]}}
-{"type":"assistant/chunk","seq":25,"time":1785097382251,"data":{"turn":1,"step":1,"chunk":{"type":"block-start","index":1,"blockType":"text"}}}
-{"type":"text-chunks","seq0":26,"time0":1785097382251,"data":{"turn":1,"step":1,"index":1,"dt":[27,0,1],"texts":["SD","K"," snapshot"," OK"]}}
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-{"type":"turn/end","seq":36,"time":1785097382288,"data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"request/context","seq":5,"time":1785460686781,"data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
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diff --git a/packages/bash/bash-sandbox/README.i18n.yaml b/packages/bash/bash-sandbox/README.i18n.yaml
index e4e294b001..640eb1810f 100644
--- a/packages/bash/bash-sandbox/README.i18n.yaml
+++ b/packages/bash/bash-sandbox/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/bash/bash-sandbox/README.md
-README.md: ca77a9c626784b29145712535d69de4afbd3a697
-README.zh.md: 4ecc8d533f7af373bdacd133d44a8def6d265868
+README.md: 035a8ad2401ca608d264049d454359eda7b2b9a7
+README.zh.md: cee27a9baaa539ba07eb1d730ea9bef2004fbeeb
diff --git a/packages/bash/bash-sandbox/README.md b/packages/bash/bash-sandbox/README.md
index ca77a9c626..035a8ad240 100644
--- a/packages/bash/bash-sandbox/README.md
+++ b/packages/bash/bash-sandbox/README.md
@@ -18,7 +18,7 @@ Semantics:
 
 - **Denials are result facts.** A failed run whose stderr carries the selected backend's own denial dialect — the signatures the provider stamps on every wrap (EROFS text under bwrap, EACCES under Landlock, EPERM under Seatbelt) — is reported as `BashRunResult.sandbox.denied: true` (conservative classification, read from the collected stderr tail); every CONFINED run also carries the mode it executed under (`result.sandbox.mode`) and the provider's enforcement completeness (`result.sandbox.enforcement`: `full`, or `partial` on an older Landlock ABI).
 - **Runner failures are sandbox failures, never command failures.** Foreground execution throws `SANDBOX_UNAVAILABLE`; a settled background process stamps `process.sandbox.runnerFailed`, which the bash producer renders through generic `task_output`. Spawn failures also pass through settlement, so confined background handles retain their mode/enforcement facts and release per-process accounting.
-- **Deployment fallback, per-call policy.** [`ctx.sandboxPolicy`](../../sandbox/sandbox-policy/) resolves a complete `SandboxExecutionPolicy` for every tool call: the calling session supplies its mode override and immutable cwd root, while deployment config supplies the fallbacks for agentless calls. An approved escalation changes only that policy's mode; its session root stays attached. `resolve()` carries the policy onto the spec, so overlapping commands from different projects run, classify, and report under their own roots and modes. The capability fact `ctx.bash.sandboxMode` reports the configured default so the tool layer advertises escalation only when this executor is mounted. The model learns of the sandbox only through result facts — the static bash tool description explains the denial marker; there is no current-mode statement in the system prompt.
+- **Deployment fallback, per-call policy.** [`ctx.sandboxPolicy`](../../sandbox/sandbox-policy/) resolves a complete `SandboxExecutionPolicy` for every tool call: the calling session supplies its mode override and immutable cwd root, while deployment config supplies the fallbacks for agentless calls. An approved escalation changes only that policy's mode; its session root stays attached. `resolve()` carries the policy onto the spec, so overlapping commands from different projects run, classify, and report under their own roots and modes. The capability fact `ctx.bash.sandboxMode` reports the configured default so the tool layer advertises escalation only when this executor is mounted; the static bash tool description separately owns denial and escalation guidance.
 - **File effects only.** Network and process visibility are deliberately not restricted — the mode vocabulary does not pretend to cover what the backend does not enforce.
 - Process mechanics (spawn, process-group kills, output collection/spill, background handles, credential scrub) are inherited from [`dsh-bash-local`](../bash-local/); runner selection lives in [`dsh-sandbox-local`](../../sandbox/sandbox-local/).
 
@@ -44,15 +44,15 @@ The keyless consumer-integration proofs are `tests/bwrap.e2e.ts`, `tests/landloc
 
 #### What the model sees
 
-The generated [`dsh-tool-bash` schemas](../../../docs/tool-catalog.md#deepseek-aidsh-tool-bash) are the baseline. By advertising a confining `sandboxMode`, this backend augments `bash` with `sandbox_permissions` using enum `workspace-write` | `danger-full-access` and with `justification`. The backend adds no prompt prose, and the session's effective mode remains unstated.
+The generated [`dsh-tool-bash` schemas](../../../docs/tool-catalog.md#deepseek-aidsh-tool-bash) are the baseline. By advertising a confining `sandboxMode`, this backend augments `bash` with `sandbox_permissions` using enum `workspace-write` | `danger-full-access` and with `justification`. The policy owner separately contributes the current capability-neutral `sandbox:policy` context.
 
 #### Token effect
 
-Small fixed schema increment on requests where `bash` is visible; mode switches add no context tokens.
+Small fixed schema increment on requests where `bash` is visible, plus the current-policy clause owned by `dsh-sandbox-policy`.
 
 #### KV Cache effect
 
-Prefix-stable while the executor advertises the same sandbox capabilities. Changing those capabilities alters the `bash` schema and may invalidate reuse from that definition; per-session mode switches do not.
+A standing-policy change appends a complete owner-rendered context snapshot after retained history, preserving the existing system/history prefix byte-for-byte. Changing executor capabilities alters the `bash` schema.
 
 ### Bash tool result, indirectly
 
diff --git a/packages/bash/bash-sandbox/README.zh.md b/packages/bash/bash-sandbox/README.zh.md
index 4ecc8d533f..cee27a9baa 100644
--- a/packages/bash/bash-sandbox/README.zh.md
+++ b/packages/bash/bash-sandbox/README.zh.md
@@ -18,7 +18,7 @@
 
 - **拒绝是结果事实。** 如果一次失败运行的 stderr 包含所选后端自身的拒绝方言，即提供方在每次包装时加上的特征（bwrap 下的 EROFS 文本、Landlock 下的 EACCES、Seatbelt 下的 EPERM），则结果报告 `BashRunResult.sandbox.denied: true`（从已收集的 stderr 尾部进行保守分类）。每次受限制运行还会携带执行时模式（`result.sandbox.mode`）与提供方强制执行完整性（`result.sandbox.enforcement`：`full`，或在较旧 Landlock ABI 上为 `partial`）。
 - **Runner 失败是沙箱失败，绝不是命令失败。** 前台执行会抛出 `SANDBOX_UNAVAILABLE`；已结算的后台进程会标记 `process.sandbox.runnerFailed`，Bash 结果生成方通过通用 `task_output` 渲染它。spawn 失败也会经过结算，因此受限制的后台句柄会保留自身的模式／强制执行事实，并释放每进程计数。
-- **部署回退，每次调用策略。** [`ctx.sandboxPolicy`](../../sandbox/sandbox-policy/) 为每次工具调用解析完整的 `SandboxExecutionPolicy`：调用会话提供自身的模式覆盖与不可变 cwd 根目录，部署配置则为无 agent（智能体）调用提供回退。已批准的升权只更改该策略的模式，会话根目录仍然附着其上。`resolve()` 把策略带入 spec，因此来自不同项目的重叠命令会在各自的根目录与模式下运行、分类和报告。能力事实 `ctx.bash.sandboxMode` 报告已配置的默认值，因此工具层只在装载该执行器时才公布升权。模型只能通过结果事实了解沙箱：静态 bash 工具描述会解释拒绝标记，系统提示词中不会声明当前模式。
+- **部署回退，每次调用策略。** [`ctx.sandboxPolicy`](../../sandbox/sandbox-policy/) 为每次工具调用解析完整的 `SandboxExecutionPolicy`：调用会话提供自身的模式覆盖与不可变 cwd 根目录，部署配置则为无 agent（智能体）调用提供回退。已批准的升权只更改该策略的模式，会话根目录仍然附着其上。`resolve()` 把策略带入 spec，因此来自不同项目的重叠命令会在各自的根目录与模式下运行、分类和报告。能力事实 `ctx.bash.sandboxMode` 报告已配置的默认值，因此工具层只在装载该执行器时才公布升权；静态 bash 工具描述则单独负责拒绝与升级引导。
 - **只限制文件影响。** 设计上不限制网络与进程可见性：模式词汇不会声称覆盖后端未强制执行的范围。
 - 进程机制（spawn、进程组终止、输出收集／spill、后台句柄、凭证清理）继承自 [`dsh-bash-local`](../bash-local/)；runner 选择位于 [`dsh-sandbox-local`](../../sandbox/sandbox-local/)。
 
@@ -44,15 +44,15 @@
 
 #### 模型看到的内容
 
-基线是生成的 [`dsh-tool-bash` schema](../../../docs/tool-catalog.md#deepseek-aidsh-tool-bash)。通过公布表明启用隔离的 `sandboxMode` 能力，此后端会为 `bash` 增加 `sandbox_permissions`，其 enum 为 `workspace-write` | `danger-full-access`，并增加 `justification`。后端不添加提示词文本，会话的有效模式仍不会声明。
+基线是生成的 [`dsh-tool-bash` schema](../../../docs/tool-catalog.md#deepseek-aidsh-tool-bash)。通过公布表明启用隔离的 `sandboxMode` 能力，此后端会为 `bash` 增加 `sandbox_permissions`，其 enum 为 `workspace-write` | `danger-full-access`，并增加 `justification`。策略归属方会另行贡献当前且不区分具体能力的 `sandbox:policy` 上下文。
 
 #### Token 影响
 
-在 `bash` 可见的请求上，schema 固定增加少量内容；模式切换不增加上下文 token。
+在 `bash` 可见的请求上，schema 固定增加少量内容，另有一条由 `dsh-sandbox-policy` 负责的当前策略子句。
 
 #### KV Cache 影响
 
-执行器持续公布相同沙箱能力时，前缀保持稳定。更改这些能力会改变 `bash` schema，可能使从该定义起的复用失效；每会话模式切换不会导致失效。
+常驻策略变化会在保留的历史之后追加一份由归属方渲染的完整上下文快照，并使既有 system/history 前缀保持逐字节不变。更改执行器能力会改变 `bash` schema。
 
 ### 间接的 Bash 工具结果
 
diff --git a/packages/bash/bash-sandbox/src/index.ts b/packages/bash/bash-sandbox/src/index.ts
index 3945809fa9..f46bad4006 100644
--- a/packages/bash/bash-sandbox/src/index.ts
+++ b/packages/bash/bash-sandbox/src/index.ts
@@ -21,7 +21,7 @@ import { classifyDenial, classifyRunnerFailure, matchesSignature, shellQuote } f
  * Plugin config: the local executor's knobs, verbatim. The sandbox policy —
  * the default mode and fallback `workspace-write` root — is NOT here: it lives
  * on `ctx.sandboxPolicy` (`@deepseek-ai/dsh-sandbox-policy`), which resolves
- * each calling session's mode and cwd for both enforcing families. The runner
+ * each calling session's mode and cwd for every enforcing capability. The runner
  * choice is likewise the `ctx.sandbox` provider's config, not this executor's.
  */
 export type Config = LocalConfig
@@ -30,8 +30,8 @@ export type Config = LocalConfig
  * Registers as `ctx.bash` in place of the local executor and requires a
  * `ctx.sandbox` provider plus `ctx.sandboxPolicy`; the tool layer is
  * unchanged. Tool calls pass the calling session's resolved policy; direct
- * calls fall back to deployment policy. The prompt does not state the standing
- * mode; `result.sandbox` reports the mode and enforcement actually used.
+ * calls fall back to deployment policy. `result.sandbox` reports the mode and
+ * enforcement actually used.
  */
 export class SandboxBashExecutor extends LocalBashExecutor {
   static override inject = ['subprocess', 'sandbox', 'sandboxPolicy']
diff --git a/packages/bash/tool-bash/README.i18n.yaml b/packages/bash/tool-bash/README.i18n.yaml
index 676c935cbd..9d53b52d02 100644
--- a/packages/bash/tool-bash/README.i18n.yaml
+++ b/packages/bash/tool-bash/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/bash/tool-bash/README.md
-README.md: deb6b899c81cb8c335b4c1cffdde4797e0a8be92
-README.zh.md: c2514308fb9f234e6d191a6b1a821ac3d195378b
+README.md: 29b9fba369e1fc6a4b8bb7bdd6543b7678df627d
+README.zh.md: 31f691f7bfb8d2cb905751663151c3f6a6bc6c57
diff --git a/packages/bash/tool-bash/README.md b/packages/bash/tool-bash/README.md
index deb6b899c8..29b9fba369 100644
--- a/packages/bash/tool-bash/README.md
+++ b/packages/bash/tool-bash/README.md
@@ -71,7 +71,7 @@ Escalating bash calls resolve `ctx.approval` before execution. `allowed-once` ap
 
 ## Per-session mode switching
 
-For sandboxing executors, each call resolves mode as one-shot escalation, then session override, then executor default. Non-sandboxing and agent-less calls carry no session override. Neither the prompt nor a switch notice announces the standing mode; denial results report the effective mode when the boundary matters. See the [`dsh-bash` fold](../bash/README.md) and [sandbox switching contract](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md).
+For sandboxing executors, each call resolves mode as one-shot escalation, then session override, then executor default. Non-sandboxing and agent-less calls carry no session override. The policy owner contributes the current capability-neutral standing mode; denial results still own the operation-specific effective mode and retry guidance. See the [`dsh-bash` fold](../bash/README.md) and [sandbox switching contract](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md).
 
 ## Model Experience
 
@@ -79,7 +79,7 @@ For sandboxing executors, each call resolves mode as one-shot escalation, then s
 
 #### What the model sees
 
-Every request in this plugin's registration scope contains the bash guidance below. A sandboxing executor adds no mode statement or switch notice. Scoped tool restrictions can hide the schemas without removing this independently registered section.
+Every request in this plugin's registration scope contains the bash guidance below. The policy owner contributes current sandbox state through its cache-safe runtime context rather than changing this section. Scoped tool restrictions can hide the schemas without removing this independently registered section.
 
 ##### Bash guidance
 
diff --git a/packages/bash/tool-bash/README.zh.md b/packages/bash/tool-bash/README.zh.md
index c2514308fb..31f691f7bf 100644
--- a/packages/bash/tool-bash/README.zh.md
+++ b/packages/bash/tool-bash/README.zh.md
@@ -71,7 +71,7 @@ overlay 根据当前 `ToolExecution` 计算，并通过专用的 `BashExecReques
 
 ## 逐会话模式切换
 
-对于启用沙箱的执行器，每次调用依次按单次升权、会话覆盖、执行器默认值解析模式。未启用沙箱以及没有 agent 的调用不携带会话覆盖。提示词和切换通知均不公布当前常驻模式；拒绝结果会在边界相关时报告有效模式。参见 [`dsh-bash` 整合](../bash/README.md)和[沙箱切换契约](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md)。
+对于启用沙箱的执行器，每次调用依次按单次升权、会话覆盖、执行器默认值解析模式。未启用沙箱以及没有 agent 的调用不携带会话覆盖。策略归属方贡献当前且不区分具体能力的常驻模式；拒绝结果仍负责操作特定的有效模式与重试引导。参见 [`dsh-bash` 整合](../bash/README.md)和[沙箱切换契约](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md)。
 
 ## 模型体验
 
@@ -79,7 +79,7 @@ overlay 根据当前 `ToolExecution` 计算，并通过专用的 `BashExecReques
 
 #### 模型看到的内容
 
-此插件注册作用域内的每个请求都包含下方 bash 指引。启用沙箱的执行器不会添加模式声明或切换通知。作用域工具限制可以隐藏 schema，但不会移除这个独立注册的段落。
+此插件注册作用域内的每个请求都包含下方 bash 指引。策略归属方通过自身的缓存安全运行时上下文贡献当前沙箱状态，而不改变此段落。作用域工具限制可以隐藏 schema，但不会移除这个独立注册的段落。
 
 ##### Bash 指引
 
diff --git a/packages/bash/tool-bash/src/index.ts b/packages/bash/tool-bash/src/index.ts
index f8cece2862..311548b520 100644
--- a/packages/bash/tool-bash/src/index.ts
+++ b/packages/bash/tool-bash/src/index.ts
@@ -376,7 +376,6 @@ export function apply(ctx: Context, config: Config = {}): void {
   if (defaultMode !== undefined && sandboxPolicy === undefined) {
     throw new Error('tool-bash: the mounted bash executor confines but ctx.sandboxPolicy is missing')
   }
-
   /** Resolve the complete standing policy for this call when a confining executor is mounted. */
   const resolveSandboxPolicy = (exec: ToolExecution): SandboxExecutionPolicy | undefined =>
     sandboxPolicy?.resolve(exec.agent === undefined ? {} : { session: exec.agent.session })
diff --git a/packages/client/connection/src/client/fixture.ts b/packages/client/connection/src/client/fixture.ts
index 49f0aaf9dc..4bdeeec7dc 100644
--- a/packages/client/connection/src/client/fixture.ts
+++ b/packages/client/connection/src/client/fixture.ts
@@ -15,6 +15,7 @@ import type {
   AssistantMessage,
   ContentBlock,
   MessageSource,
+  TokenUsage,
   ToolResultMessage,
   UserMessage,
 } from '@deepseek-ai/dsh-llm'
@@ -138,7 +139,107 @@ const TERMINAL_EXIT_STATUS: Record>(() => new Set())' },
+    ],
+  },
+  {
+    path: 'packages/client/ui-conversation/src/client/contract/search-card-model.ts',
+    matches: [
+      { lineNumber: 24, line: 'export const CHAT_SEARCH_MAX_LINES = 8' },
+      { lineNumber: 60, line: 'export function searchCardModel(block: ToolCallBlock): SearchCardModel | null {' },
+    ],
+  },
+  {
+    path: 'packages/client/ui-conversation/src/client/toolviews/search-row.tsx',
+    matches: [
+      { lineNumber: 71, line: 'export function SearchRow({ toolName, block }: ToolRowProps) {' },
+      { lineNumber: 73, line: '  const search = searchCardModel(block)' },
+      { lineNumber: 90, line: '        ' },
+      { lineNumber: 113, line: "    ctx.slots.register({ name: 'conversation.chat.toolview', key: 'grep' }, SearchRow)" },
+    ],
+  },
+]
+
+/**
+ * The model-facing grep render text for the sample — what a UI without a search
+ * card shows, attached as the view's `content`. Mirrors the real grep
+ * presenter's shape (see formatGrepOutput in dsh-tool-fs-search): a
+ * `Found X of Y matches` header, the matches grouped under file headers with
+ * `Line N:` rows, then a spill-recovery footer.
+ */
+const SEARCH_MATCHES_TEXT = [
+  'Found 9 of 42 matches',
+  '',
+  ...SEARCH_MATCHES_FIXTURE.map(file =>
+    [file.path, ...file.matches.map(m => `Line ${m.lineNumber}: ${m.line}`)].join('\n')),
+  '',
+  '(Full grep result stored at: fixture://spill/grep-66. Read it to see every match.)',
+].join('\n')
+
+/**
+ * Structured glob result for the search sample (turn 67): a flat path list,
+ * truncated with a larger `total` so the path card shows its capped indicator.
+ */
+const SEARCH_PATHS_FIXTURE = [
+  'packages/client/ui-primitives/src/SearchBlock.tsx',
+  'packages/client/ui-primitives/src/SearchBlock.module.css',
+  'packages/client/ui-conversation/src/client/contract/search-card-model.ts',
+  'packages/client/ui-conversation/src/client/toolviews/search-row.tsx',
+  'packages/client/ui-conversation/src/client/toolviews/search-row.module.css',
+]
+
+/**
+ * The model-facing glob render text — the newline-joined path list plus a
+ * spill-recovery footer, mirroring the real glob presenter's shape (see
+ * formatGlobOutput in dsh-tool-fs-search).
+ */
+const SEARCH_PATHS_TEXT = [
+  ...SEARCH_PATHS_FIXTURE,
+  '',
+  '(Showing 5 of 23 paths. Full sorted result stored at: fixture://spill/glob-67. Read it to see every path.)',
+].join('\n')
+
+/**
+ * Read-card sample for the read turn: a WINDOW past an offset, so the line
+ * numbers start above 1 (the card's gutter keeps the file's own numbering) and
+ * `totalLines` exceeds the window (the card shows a "showing N of M" note). The
+ * fixture is client-side and cannot import the read tool, so the structured
+ * window is authored inline exactly as the tool would project it through
+ * `presentationMeta`. `lang` is a `ts` hint so the shiki path highlights it.
+ */
+const READ_SAMPLE_FIRST_LINE = 41
+const READ_SAMPLE_SOURCE = [
+  'export interface ReadBlockProps {',
+  '  label?: string | undefined',
+  '  lines: readonly ReadBlockLine[]',
+  '  totalLines: number',
+  '  lang?: string | undefined',
+  '  maxLines?: number | undefined',
+  '  className?: string | undefined',
+  '}',
+  '',
+  '// A windowed read keeps the file line numbers in the gutter.',
+  'const marker = "fixture read sample"',
+]
+const READ_SAMPLE_LINES = READ_SAMPLE_SOURCE.map((text, index) => ({ number: READ_SAMPLE_FIRST_LINE + index, text }))
+const READ_SAMPLE_PATH = 'packages/client/ui-primitives/src/ReadBlock.tsx'
+const READ_SAMPLE_TOTAL = 180
+const READ_SAMPLE_TEXT = READ_SAMPLE_SOURCE.map((text, index) => `${READ_SAMPLE_FIRST_LINE + index}: ${text}`).join('\n')
+
+/**
+ * The structured `web_search` result view for the web-search turn, authored inline
  * because this client-side fixture cannot import the web tool that projects it.
  * The sources exercise the citation list's features: a titled source with a
  * snippet and a date, a source with no title (its hostname labels the link) and
@@ -168,7 +269,7 @@ const WEB_SEARCH_RESULT: Omit, 'card' | 'kind'> = {
   url: 'https://www.deepseek.com/blog/harness-architecture',
   statusCode: 200,
@@ -227,6 +328,16 @@ function sid(id: string): SessionId {
   return id as SessionId
 }
 
+/** Deterministic provider billing attached to fixture assistant messages. */
+function fixtureUsage(turn: number, step: number): TokenUsage {
+  return {
+    inputTokens: 20 + turn % 5,
+    outputTokens: 8 + step,
+    cacheReadTokens: turn === 0 ? 0 : 80,
+    cacheWriteTokens: turn % 10 === 0 ? 4 : 0,
+  }
+}
+
 /** fx-alpha history script: 60 turns (~130+ messages -> 3 pages at PAGE_MESSAGES=50),
  *  mixing reasoning blocks / tool call+result / steering / context. */
 function buildAlphaLog(): SessionEvent[] {
@@ -234,7 +345,17 @@ function buildAlphaLog(): SessionEvent[] {
   let time = Date.now() - 3_600_000
   const push = (e: Record): number => {
     const seq = events.length
-    events.push({ seq, time: (time += 800), ...e })
+    const data = e['data'] as Record | undefined
+    const authored = e['type'] === 'assistant/message' && data !== undefined
+      ? {
+        ...e,
+        data: {
+          ...data,
+          usage: fixtureUsage(data['turn'] as number, data['step'] as number),
+        },
+      }
+      : e
+    events.push({ seq, time: (time += 800), ...authored })
     return seq
   }
   for (let turn = 0; turn < 60; turn++) {
@@ -315,8 +436,8 @@ function buildAlphaLog(): SessionEvent[] {
     const turn = 64
     const callId = `fx-call-${turn}`
     const program = 'const listing = await tools.bash({ command: "ls notes", description: "List notes" })\n'
-      + 'const demo = await tools.read({ path: "notes/demo.txt" })\n'
-      + 'await tools.read({ path: "notes/missing.txt" }).catch(() => "tolerated")\n'
+      + 'const demo = await tools.read({ file_path: "notes/demo.txt" })\n'
+      + 'await tools.read({ file_path: "notes/missing.txt" }).catch(() => "tolerated")\n'
       + 'return { listing, demo }'
     const args = JSON.stringify({ code: program, description: 'Read the notes files and summarize' })
     push({ type: 'turn/start', data: { turn, trigger: { kind: 'message', source: { kind: 'user' } } } })
@@ -341,8 +462,8 @@ function buildAlphaLog(): SessionEvent[] {
       })
     }
     dispatchPair(1, 'bash', { command: 'ls notes', description: 'List notes' }, 'demo.txt\nnew-demo.txt')
-    dispatchPair(2, 'read', { path: 'notes/demo.txt' }, 'hello fixture\n')
-    dispatchPair(3, 'read', { path: 'notes/missing.txt' }, 'Error: ENOENT: notes/missing.txt not found', true)
+    dispatchPair(2, 'read', { file_path: 'notes/demo.txt' }, 'hello fixture\n')
+    dispatchPair(3, 'read', { file_path: 'notes/missing.txt' }, 'Error: ENOENT: notes/missing.txt not found', true)
     push({
       type: 'tool/result', surfaceOp: 'append',
       data: { turn, step: 0, message: toolResultMessage(callId, text('{"listing":"demo.txt\\nnew-demo.txt","demo":"hello fixture\\n"}'), false) },
@@ -350,7 +471,7 @@ function buildAlphaLog(): SessionEvent[] {
     push({ type: 'step/end', data: { turn, step: 0 } })
     push({ type: 'turn/end', data: { turn, reason: { kind: 'completed' } } })
   }
-  // Turn 65: todo_write sample — the TodoRow toolview in the flow plus the
+  // Turn 67: todo_write sample — the TodoRow toolview in the flow plus the
   // todo/write snapshot event feeding the TodoPanel plan strip.
   const fixtureTodos = [
     { content: '梳理需求', status: 'completed' },
@@ -371,7 +492,30 @@ function buildAlphaLog(): SessionEvent[] {
   // strip empty and take the todo surfaces' own coverage with it.
   toolTurn(65, 'bash', '{"command":"pnpm run check","cwd":"/tmp/fixture/deep/nested"}', TERMINAL_OUTPUT_FIXTURE)
 
-  // Turns 66-67: the web render intent — a web_search whose result view carries
+  // Turns 66-67: the search card's two shapes. `grep` emits a `card: 'search'`
+  // `shape: 'matches'` result view (grouped-by-file matches, truncated with a
+  // larger `total`), `glob` emits `shape: 'paths'` (a flat path list, likewise
+  // truncated). Both ride the keyed SearchRow registration under their own
+  // names; the render-site fallback row is covered by the model derivation
+  // tests, since every fixture search tool has a keyed row. Ordered before the
+  // todo turn for the same standing-plan reason the bash turn is.
+  toolTurn(66, 'grep', '{"pattern":"SEARCH_MAX_LINES","path":"packages/client"}', SEARCH_MATCHES_TEXT)
+  toolTurn(67, 'glob', '{"pattern":"**/SearchBlock*","path":"packages/client"}', SEARCH_PATHS_TEXT)
+
+  // Turn 68: the read sample — a WINDOW past an offset so the card draws file
+  // line numbers starting above 1 and a "showing N of M" note (the window is
+  // shorter than READ_SAMPLE_TOTAL), with a `ts` language hint the shiki path
+  // highlights. Named `read`, so it exercises the keyed ReadRow registration.
+  // The render-site fallback ROW SHAPE (a read call on the generic flattened
+  // path) is covered by the turn 64 run_code read sub-dispatches, which
+  // session.ts folds with resultView: null; the fallback-row + read-CARD
+  // combination is pinned by the web_fetch case in read-card.spec.tsx, not by
+  // this fixture. The read render intent is result-side only, so its pending
+  // call stays a generic `kind: 'read'` card; presentResult carries the
+  // structured window.
+  toolTurn(68, 'read', `{"file_path":${JSON.stringify(READ_SAMPLE_PATH)},"offset":${READ_SAMPLE_FIRST_LINE}}`, READ_SAMPLE_TEXT)
+
+  // Turns 69-70: the web render intent — a web_search whose result view carries
   // structured sources plus an answer (the citation list, one source lacking a
   // title so its hostname labels the link, the capped indicator on), and a
   // web_fetch whose result view carries the fetched URL and its HTTP status.
@@ -380,11 +524,11 @@ function buildAlphaLog(): SessionEvent[] {
   // the real tools so they hit the keyed WebRow registration. Ordered BEFORE
   // the todo turn for the same reason turn 65 is: the standing plan retires at
   // the next turn/start, so a turn after it would empty the dock's plan strip.
-  toolTurn(66, 'web_search', '{"query":"deepseek harness architecture"}', 'Search results for deepseek harness architecture.')
-  toolTurn(67, 'web_fetch', '{"url":"https://www.deepseek.com/blog/harness-architecture"}', '# Harness architecture\n\nEverything is a plugin.')
+  toolTurn(69, 'web_search', '{"query":"deepseek harness architecture"}', 'Search results for deepseek harness architecture.')
+  toolTurn(70, 'web_fetch', '{"url":"https://www.deepseek.com/blog/harness-architecture"}', '# Harness architecture\n\nEverything is a plugin.')
 
   const todoArgs = JSON.stringify({ todos: fixtureTodos })
-  toolTurn(68, 'todo_write', todoArgs, 'Updated todo list: 1 pending, 1 in progress, 1 completed.')
+  toolTurn(71, 'todo_write', todoArgs, 'Updated todo list: 1 pending, 1 in progress, 1 completed.')
   // The real tool appends the snapshot mid-execution — between tool/call and
   // tool/result — so the fixture reproduces that exact ordering (the last
   // toolTurn events run ... tool/call, tool/result, step/end, turn/end).
@@ -419,6 +563,12 @@ function presentCall(name: string, argsRaw: string): ToolCallView | undefined {
         card: 'diff', title: `Write ${str(args.path)}`,
         diffs: [{ path: str(args.path), oldText: null, newText: str(args.content) }],
       }
+    // A read pending call is a GENERIC card (kind: 'read', a follow-along
+    // location): the read render intent is result-side only, because a call
+    // carries no file content until execute returns. The rich read card arrives
+    // in presentResult.
+    case 'read':
+      return { card: 'generic', title: `Read ${str(args.file_path)}`, kind: 'read', locations: [{ path: str(args.file_path) }] }
     case 'edit':
       // The multi-hunk sample (turn 67) is keyed on its file_path, so the two
       // scattered hunks share one path header and the card draws the `⋯` gap.
@@ -440,6 +590,13 @@ function presentCall(name: string, argsRaw: string): ToolCallView | undefined {
         card: 'diff', title: `Write ${str(args.file_path)}`,
         diffs: [{ path: str(args.file_path), oldText: null, newText: str(args.content) }],
       }
+    // A search call stays a generic card (kind: 'search'): the structured
+    // matches/paths exist only after execute, so the search card is result-time
+    // only (presentResult builds it). This mirrors the real grep/glob presenters.
+    case 'grep':
+      return { card: 'generic', title: `Grep ${str(args.pattern)}`, kind: 'search', rawInput: args }
+    case 'glob':
+      return { card: 'generic', title: `Glob ${str(args.pattern)}`, kind: 'search', rawInput: args }
     // The web tools keep a GENERIC pending card and add the `web` result card
     // only at result time (the contract's result-only web shape); their pending
     // kind matches the result kind so a call and its result read as one category.
@@ -455,6 +612,28 @@ function presentCall(name: string, argsRaw: string): ToolCallView | undefined {
 function presentResult(name: string, argsRaw: string, resultText: string): ToolResultView | undefined {
   const call = presentCall(name, argsRaw)
   if (call === undefined) return undefined
+  // Search is result-time only: the call stays a generic search card, and the
+  // result view carries the structured shape the card renders. The view holds no
+  // result text — a UI without a search card falls back to the raw tool/result
+  // content — so the truncation recovery footer rides that raw content (the
+  // `toolTurn` message text), not the view. `total` exceeds the retained count so
+  // the card shows its capped indicator.
+  if (name === 'grep') {
+    return { card: 'search', shape: 'matches', files: SEARCH_MATCHES_FIXTURE, truncated: true, total: 42 }
+  }
+  if (name === 'glob') {
+    return { card: 'search', shape: 'paths', paths: SEARCH_PATHS_FIXTURE, truncated: true, total: 23 }
+  }
+  // The read result is the structured window the tool projects through
+  // `presentationMeta`; the fixture authors it inline (it cannot import the
+  // tool). Keyed on the name because the read pending call is a generic card,
+  // so `call.card` alone does not distinguish it from edit/write.
+  if (name === 'read') {
+    return {
+      card: 'read', path: READ_SAMPLE_PATH, offset: READ_SAMPLE_FIRST_LINE, lines: READ_SAMPLE_LINES,
+      totalLines: READ_SAMPLE_TOTAL, lang: 'ts', content: text(resultText),
+    }
+  }
   // The web tools keep a generic pending card, so their result card is chosen
   // by tool name rather than by the pending card tag: the structured `web` card
   // the frontend consumes. The view carries no `content` copy (per the contract
@@ -569,6 +748,113 @@ function permissionSelectOf(
   }
 }
 
+interface FixtureTokenUsageProjection {
+  uncachedInputTokens: number
+  outputTokens: number
+  cacheReadTokens: number
+  cacheWriteTokens: number
+}
+
+interface FixtureUsageSample {
+  turn: number
+  step: number
+  usage: TokenUsage
+}
+
+/** Read one provider usage sample from either durable carrier. */
+function usageSampleOf(event: SessionEvent): FixtureUsageSample | undefined {
+  const item = event as unknown as {
+    type: string
+    data: {
+      turn?: number
+      step?: number
+      usage?: TokenUsage
+      chunk?: { type?: string; usage?: TokenUsage }
+    }
+  }
+  const usage = item.type === 'assistant/chunk' && item.data.chunk?.type === 'usage'
+    ? item.data.chunk.usage
+    : item.type === 'assistant/message'
+      ? item.data.usage
+      : undefined
+  return usage === undefined || item.data.turn === undefined || item.data.step === undefined
+    ? undefined
+    : { turn: item.data.turn, step: item.data.step, usage }
+}
+
+/** Fixture parallel of token-meter's last-sample-replacing usage projection. */
+function tokenUsageOf(log: readonly SessionEvent[]): FixtureTokenUsageProjection {
+  const totals: FixtureTokenUsageProjection = {
+    uncachedInputTokens: 0,
+    outputTokens: 0,
+    cacheReadTokens: 0,
+    cacheWriteTokens: 0,
+  }
+  let last: {
+    turn: number
+    step: number
+    buckets: FixtureTokenUsageProjection
+  } | null = null
+  for (const event of log) {
+    const sample = usageSampleOf(event)
+    if (sample === undefined) continue
+    const buckets: FixtureTokenUsageProjection = {
+      uncachedInputTokens: sample.usage.inputTokens,
+      outputTokens: sample.usage.outputTokens,
+      cacheReadTokens: sample.usage.cacheReadTokens ?? 0,
+      cacheWriteTokens: sample.usage.cacheWriteTokens ?? 0,
+    }
+    const previous = last?.turn === sample.turn && last.step === sample.step
+      ? last.buckets
+      : undefined
+    totals.uncachedInputTokens += buckets.uncachedInputTokens - (previous?.uncachedInputTokens ?? 0)
+    totals.outputTokens += buckets.outputTokens - (previous?.outputTokens ?? 0)
+    totals.cacheReadTokens += buckets.cacheReadTokens - (previous?.cacheReadTokens ?? 0)
+    totals.cacheWriteTokens += buckets.cacheWriteTokens - (previous?.cacheWriteTokens ?? 0)
+    last = { turn: sample.turn, step: sample.step, buckets }
+  }
+  return totals
+}
+
+interface FixtureRequestContext {
+  provider: string
+  model: string
+  contextWindow?: number
+}
+
+/** Latest log-only route context, or undefined before any request ran. */
+function lastRequestContext(
+  log: readonly SessionEvent[],
+): FixtureRequestContext | undefined {
+  const event = log.findLast(item => (item as { type: string }).type === 'request/context')
+  return event === undefined
+    ? undefined
+    : (event as unknown as { data: FixtureRequestContext }).data
+}
+
+/**
+ * Fixture parallel of token-meter's request-pressure projection: the last
+ * provider-reported prompt size paired with the last recorded capacity. The
+ * two need not come from one request — see the token-meter README.
+ */
+function contextPressureOf(
+  log: readonly SessionEvent[],
+): { pressureTokens?: number; contextWindow?: number } {
+  let pressureTokens: number | undefined
+  for (const event of log) {
+    const sample = usageSampleOf(event)
+    if (sample === undefined) continue
+    pressureTokens = sample.usage.inputTokens
+      + (sample.usage.cacheReadTokens ?? 0)
+      + (sample.usage.cacheWriteTokens ?? 0)
+  }
+  const contextWindow = lastRequestContext(log)?.contextWindow
+  return {
+    ...pressureTokens === undefined ? {} : { pressureTokens },
+    ...contextWindow === undefined ? {} : { contextWindow },
+  }
+}
+
 function projectionValuesOf(log: readonly SessionEvent[]): Record {
   const values: Record = {}
   const titleEvent = log.findLast(item => (item as { type: string }).type === 'session/title')
@@ -583,12 +869,32 @@ function projectionValuesOf(log: readonly SessionEvent[]): Record[] {
   const type = (event as { type: string }).type
+  // One usage sample advances both token-meter units.
+  if (usageSampleOf(event) !== undefined) {
+    return [
+      { type: 'session/projection', sessionId: id, key: 'tokenUsage', value: tokenUsageOf(log), seq: event.seq },
+      { type: 'session/projection', sessionId: id, key: 'contextPressure', value: contextPressureOf(log), seq: event.seq },
+    ]
+  }
+  if (type === 'request/context') {
+    return [{
+      type: 'session/projection',
+      sessionId: id,
+      key: 'contextPressure',
+      value: contextPressureOf(log),
+      seq: event.seq,
+    }]
+  }
   if (type === 'session/title') {
     const values = projectionValuesOf(log)
     /* v8 ignore next -- the advancing title event is in the log, so the key is present. */
@@ -1285,7 +1591,16 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
       replays.delete(id)
       const done = pieces.slice(0, i).join('')
       append(id, { type: 'assistant/chunk', data: { turn, step, chunk: { type: 'block-end', index: 0, block: { type: 'text', text: done } } } })
-      append(id, { type: 'assistant/message', surfaceOp: 'append', data: { turn, step, message: assistantMessage(text(aborted ? `${done}（已中断）` : done)) } })
+      append(id, {
+        type: 'assistant/message',
+        surfaceOp: 'append',
+        data: {
+          turn,
+          step,
+          message: assistantMessage(text(aborted ? `${done}（已中断）` : done)),
+          usage: fixtureUsage(turn, step),
+        },
+      })
       append(id, { type: 'step/end', data: { turn, step } })
       append(id, { type: 'turn/end', data: { turn, reason: { kind: aborted ? 'cancelled' : 'completed' } } })
       setRunning(id, false)
@@ -1554,6 +1869,16 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
           append(id, { type: 'plan/mode', data: { active: plan.wanted } })
         }
         append(id, { type: 'user/message', surfaceOp: 'append', data: userMessage(content) })
+        // Capacity parallel of the host token-meter's request/context record:
+        // log-only, appended inside the open turn, and deduplicated against the
+        // route already recorded (the fixture never varies contextWindow).
+        const target = modelTargets.get(id) ?? { provider: 'deepseek', model: 'deepseek-v4-flash' }
+        if (lastRequestContext(logOf(id))?.model !== target.model) {
+          append(id, {
+            type: 'request/context',
+            data: { provider: target.provider, model: target.model, contextWindow: 128_000 },
+          })
+        }
         startReply(
           id,
           turn,
diff --git a/packages/client/connection/tests/fixture.spec.ts b/packages/client/connection/tests/fixture.spec.ts
index f70c4eb421..4892d947fb 100644
--- a/packages/client/connection/tests/fixture.spec.ts
+++ b/packages/client/connection/tests/fixture.spec.ts
@@ -141,6 +141,14 @@ describe('createFixtureApi', () => {
         },
         plan: { active: false, pending: false },
         goal: null,
+        tokenUsage: {
+          uncachedInputTokens: 0,
+          outputTokens: 0,
+          cacheReadTokens: 0,
+          cacheWriteTokens: 0,
+        },
+        // No request ran, so neither pressure nor capacity is known yet.
+        contextPressure: {},
       } },
     })
   })
@@ -275,6 +283,17 @@ describe('createFixtureApi', () => {
     expect(types).toContain('assistant/chunk')
     expect(types).toContain('assistant/message')
     expect(types.at(-1)).toBe('turn/end')
+    // Capacity is durable log state, not a transient frame: the prompt path
+    // records request/context and the projection carries it to the client.
+    expect(types).toContain('request/context')
+    expect(frames.some(frame =>
+      frame.type === 'session/projection'
+      && frame.key === 'tokenUsage'
+      && (frame.value as { outputTokens?: number }).outputTokens === 8)).toBe(true)
+    expect(frames.some(frame =>
+      frame.type === 'session/projection'
+      && frame.key === 'contextPressure'
+      && (frame.value as { contextWindow?: number }).contextWindow === 128_000)).toBe(true)
     const finalize = frames.find((f): f is Extract => f.type === 'session/event' && f.event.type === 'assistant/message')
     expect(JSON.stringify(finalize?.event.data)).toContain('（已中断）')
     // Idle cancel: no replay in flight, must not explode; running flips false.
@@ -306,7 +325,7 @@ describe('createFixtureApi', () => {
       const envelopes: RpcRequest[] = []
       for await (const envelope of api.events.mux(req({}), abort.signal)) {
         envelopes.push(envelope)
-        if (envelopes.length >= 8) abort.abort()
+        if (envelopes.length >= 10) abort.abort()
       }
       return envelopes
     }
@@ -314,16 +333,18 @@ describe('createFixtureApi', () => {
     const second = await openOnce()
     expect(first[0]?.payload).toMatchObject({ type: 'session/subscribed', sessionId: 'fx-alpha' })
     expect((first[0]?.payload as { lastSeq: number }).lastSeq).toBeGreaterThan(0)
-    // Projection baseline frames follow the subscribed frame (title + todos + permissions + plan + goal units).
+    // Projection baseline frames follow subscribed (domain units + token usage).
     expect(first[1]?.payload).toMatchObject({ type: 'session/projection', sessionId: 'fx-alpha', key: 'title', value: 'Fixture 历史会话' })
     expect(first[2]?.payload).toMatchObject({ type: 'session/projection', sessionId: 'fx-alpha', key: 'todos' })
     expect(first[3]?.payload).toMatchObject({ type: 'session/projection', sessionId: 'fx-alpha', key: 'permissions' })
     expect(first[4]?.payload).toMatchObject({ type: 'session/projection', sessionId: 'fx-alpha', key: 'plan', value: { active: false, pending: false } })
     expect(first[5]?.payload).toMatchObject({ type: 'session/projection', sessionId: 'fx-alpha', key: 'goal', value: null })
-    expect(first[6]?.payload).toMatchObject({ type: 'approval/requested', toolName: 'dangerous_tool' })
-    expect(second[6]?.rpcId).toBe(first[6]?.rpcId) // stable rpcId across replays (host replay semantics)
-    expect(first[7]?.payload).toMatchObject({ type: 'question/requested', sessionId: 'fx-alpha' })
-    expect(second[7]?.rpcId).toBe(first[7]?.rpcId)
+    expect(first[6]?.payload).toMatchObject({ type: 'session/projection', sessionId: 'fx-alpha', key: 'tokenUsage' })
+    expect(first[7]?.payload).toMatchObject({ type: 'session/projection', sessionId: 'fx-alpha', key: 'contextPressure' })
+    expect(first[8]?.payload).toMatchObject({ type: 'approval/requested', toolName: 'dangerous_tool' })
+    expect(second[8]?.rpcId).toBe(first[8]?.rpcId) // stable rpcId across replays (host replay semantics)
+    expect(first[9]?.payload).toMatchObject({ type: 'question/requested', sessionId: 'fx-alpha' })
+    expect(second[9]?.rpcId).toBe(first[9]?.rpcId)
   })
 
   it('steer with no replay in flight falls through to a fresh queued turn; non-text blocks stringify empty', async () => {
diff --git a/packages/client/locale/README.i18n.yaml b/packages/client/locale/README.i18n.yaml
index 05f332a9a1..0f4dd20268 100644
--- a/packages/client/locale/README.i18n.yaml
+++ b/packages/client/locale/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/locale/README.md
-README.md: c2adbcabc77def740094288da4643032873aa5b8
-README.zh.md: c6ecb31e21d7513a4e7d579b17588107ccd7ea59
+README.md: 7f780092af9bc7079cc5080c06e986bef2dfdbce
+README.zh.md: 62c037977115d33b834fe60b042431e44d208524
diff --git a/packages/client/locale/README.md b/packages/client/locale/README.md
index c2adbcabc7..7f780092af 100644
--- a/packages/client/locale/README.md
+++ b/packages/client/locale/README.md
@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-Locale plugin: LocaleService — the browser locale preference (`zh`/`en`, persisted under `dsh.locale`; `locale/change` fires on switches only) plus the ns×locale dictionary registry (typed `register(ns, {zh, en})` checked against `LocaleNamespaceMap`, `bind(ns)`→`TranslateNS`; lookup chain ns → common → zh → key). The service implements the slot system's `LocaleFace` and installs itself through `ctx.slots.installLocale`, backing the framework-injected `t` standard seat (`Translate`/`TranslateNS` are ui-slots types; import them from there — this package only re-exports for dictionary owners' convenience).
+Locale plugin: LocaleService — the browser locale preference (`zh`/`en`, persisted under `dsh.locale`; with nothing persisted a fresh browser opens in the language `navigator` asks for — matched on the primary subtag, `zh` when it asks for none this app ships; `locale/change` fires on switches only) plus the ns×locale dictionary registry (typed `register(ns, {zh, en})` checked against `LocaleNamespaceMap`, `bind(ns)`→`TranslateNS`; lookup chain ns → common → zh → key). The service implements the slot system's `LocaleFace` and installs itself through `ctx.slots.installLocale`, backing the framework-injected `t` standard seat (`Translate`/`TranslateNS` are ui-slots types; import them from there — this package only re-exports for dictionary owners' convenience).
 
 ## Model Experience
 
diff --git a/packages/client/locale/README.zh.md b/packages/client/locale/README.zh.md
index c6ecb31e21..62c0379771 100644
--- a/packages/client/locale/README.zh.md
+++ b/packages/client/locale/README.zh.md
@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-locale 插件：LocaleService——浏览器 locale 偏好（`zh`／`en`，以 `dsh.locale` 持久化；`locale/change` 仅在切换语言时触发），加上 ns×locale 字典注册表（类型化 `register(ns, {zh, en})` 按 `LocaleNamespaceMap` 校验，`bind(ns)`→`TranslateNS`；查找链 ns → common → zh → key）。该服务实现 slot 系统的 `LocaleFace` 并经 `ctx.slots.installLocale` 自行安装，支撑框架注入的 `t` 标准席位（`Translate`／`TranslateNS` 是 ui-slots 的类型；请从那里导入——本包的再导出仅为字典所有者提供便利）。
+locale 插件：LocaleService——浏览器 locale 偏好（`zh`／`en`，以 `dsh.locale` 持久化；未持久化偏好时，全新浏览器以 `navigator` 请求的语言开场——按主子标签匹配，若其请求的语言本应用都不提供则为 `zh`；`locale/change` 仅在切换语言时触发），加上 ns×locale 字典注册表（类型化 `register(ns, {zh, en})` 按 `LocaleNamespaceMap` 校验，`bind(ns)`→`TranslateNS`；查找链 ns → common → zh → key）。该服务实现 slot 系统的 `LocaleFace` 并经 `ctx.slots.installLocale` 自行安装，支撑框架注入的 `t` 标准席位（`Translate`／`TranslateNS` 是 ui-slots 的类型；请从那里导入——本包的再导出仅为字典所有者提供便利）。
 
 ## 模型体验
 
diff --git a/packages/client/locale/src/client/index.ts b/packages/client/locale/src/client/index.ts
index 65eeddb9e2..c5e54c5be9 100644
--- a/packages/client/locale/src/client/index.ts
+++ b/packages/client/locale/src/client/index.ts
@@ -83,7 +83,7 @@ declare module 'cordis' {
   }
 }
 
-/** Fallback locale consulted after the active locale misses (also the default). */
+/** Fallback locale consulted after the active locale misses (also the last-resort initial locale). */
 export const FALLBACK_LOCALE: LocaleId = 'zh'
 
 /** Shared namespace for shell-level texts. */
@@ -123,7 +123,7 @@ export class LocaleService {
    */
   constructor(ctx: Context) {
     this.ctx = ctx
-    this.snapshot = Object.freeze({ active: restorePreference(), locales: LOCALES, revision: 0 })
+    this.snapshot = Object.freeze({ active: resolveInitialLocale(), locales: LOCALES, revision: 0 })
   }
 
   /**
@@ -288,17 +288,52 @@ export class LocaleService {
   }
 }
 
-/** Read the persisted locale id; unknown or unreadable values fall back to zh. */
-function restorePreference(): LocaleId {
+/**
+ * The locale a fresh service opens with: an explicit preference the user
+ * already chose wins over the browser's own language, which in turn wins over
+ * {@link FALLBACK_LOCALE} (non-browser boots and browsers set to a language
+ * this app does not ship).
+ */
+function resolveInitialLocale(): LocaleId {
+  return restorePreference() ?? detectBrowserLocale() ?? FALLBACK_LOCALE
+}
+
+/** Read the persisted locale id; unknown or unreadable values read as no preference. */
+function restorePreference(): LocaleId | undefined {
   // Non-browser runs (node e2e booting the client tree) have no localStorage.
-  if (typeof localStorage === 'undefined') return FALLBACK_LOCALE
+  if (typeof localStorage === 'undefined') return undefined
   try {
     const stored = localStorage.getItem(STORAGE_KEY)
     if (stored === 'zh' || stored === 'en') return stored
   } catch {
-    // Storage access can throw (privacy mode); the default below covers it.
+    // Storage access can throw (privacy mode); an unreadable store simply
+    // records no preference, and the browser language decides instead.
   }
-  return FALLBACK_LOCALE
+  return undefined
+}
+
+/**
+ * The first shipped locale the browser asks for, matched on the primary
+ * subtag so every regional variant lands on its language (`zh-Hans-CN` -> zh,
+ * `en-GB` -> en). `window` is the browser test, not `navigator`: Node exposes
+ * a global `navigator` reporting the machine's own language, which would
+ * otherwise decide the locale for non-browser runs (node e2e booting the
+ * client tree). `navigator.language` trails the ordered `languages` list and
+ * covers its absence on hosts that expose only the single tag.
+ */
+function detectBrowserLocale(): LocaleId | undefined {
+  if (typeof window === 'undefined') return undefined
+  /* oxlint-disable-next-line typescript/no-unnecessary-condition --
+   * The DOM lib types `languages` as always present; embedders and older
+   * WebViews ship a Navigator without it, and spreading undefined would
+   * throw at boot. Same environment-boundary distrust as the localStorage
+   * guards below. */
+  for (const tag of [...(navigator.languages ?? []), navigator.language]) {
+    const primary = tag.toLowerCase().split('-')[0]
+    const match = LOCALES.find(locale => locale.id === primary)
+    if (match) return match.id
+  }
+  return undefined
 }
 
 /** Persist the locale id; storage failures are non-fatal (preference resets next boot). */
diff --git a/packages/client/locale/tests/apply.spec.ts b/packages/client/locale/tests/apply.spec.ts
index c603cbc5f0..a3007f8c78 100644
--- a/packages/client/locale/tests/apply.spec.ts
+++ b/packages/client/locale/tests/apply.spec.ts
@@ -2,7 +2,7 @@
  * Language row registration, snapshot projection into the row store, and
  * recovery after an HMR collapse of the declaring entry. */
 import { Context } from 'cordis'
-import { describe, expect, it } from 'vitest'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import { apply, inject, SETTINGS_NS } from '@deepseek-ai/dsh-client-locale/client'
 import type { LanguageRowInjected, LocaleService } from '@deepseek-ai/dsh-client-locale/client'
@@ -36,6 +36,16 @@ function faceOf(slots: SlotsService) {
 }
 
 describe('locale apply', () => {
+  // A fresh service opens in the browser's language, so these wiring specs
+  // pin one to keep their zh baseline independent of the test environment.
+  beforeEach(() => {
+    vi.stubGlobal('navigator', { languages: ['zh-CN'], language: 'zh-CN' })
+  })
+
+  afterEach(() => {
+    vi.unstubAllGlobals()
+  })
+
   it('declares the slot service', () => {
     expect(inject).toEqual(['slots'])
   })
diff --git a/packages/client/locale/tests/locale.spec.ts b/packages/client/locale/tests/locale.spec.ts
index 80fe699e34..442701dbb3 100644
--- a/packages/client/locale/tests/locale.spec.ts
+++ b/packages/client/locale/tests/locale.spec.ts
@@ -1,5 +1,5 @@
 // @vitest-environment jsdom
-import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { Context } from 'cordis'
 import type { LocaleSnapshot } from '@deepseek-ai/dsh-client-locale/client'
 import { LocaleService, STORAGE_KEY } from '@deepseek-ai/dsh-client-locale/client'
@@ -11,9 +11,26 @@ const make = (): { ctx: Context; svc: LocaleService; events: LocaleSnapshot[] }
   return { ctx, svc: new LocaleService(ctx), events }
 }
 
+/**
+ * Pin the browser environment a fresh service reads its initial locale from.
+ * This package's own specs stub the globals directly instead of using
+ * `usePinnedBrowserLanguages` (dsh-client-test-runtime): they need the shapes
+ * that helper deliberately cannot express — a missing `languages` list, a
+ * list decoupled from `language`, and a non-browser run with no `window`.
+ */
+const stubLanguages = (...tags: string[]): void => {
+  vi.stubGlobal('navigator', { languages: tags, language: tags[0] ?? '' })
+}
+
 describe('LocaleService', () => {
   beforeEach(() => {
     localStorage.clear()
+    // A Chinese browser is the baseline these specs assert their zh state on.
+    stubLanguages('zh-CN')
+  })
+
+  afterEach(() => {
+    vi.unstubAllGlobals()
   })
 
   it('translates through the active-locale -> zh -> key chain', () => {
@@ -132,23 +149,51 @@ describe('LocaleService', () => {
     expect(() => { svc.setLocale('fr') }).toThrow('not registered')
   })
 
-  it('restores a persisted locale and falls back to zh on garbage', () => {
+  it('restores a persisted locale over the browser language, and garbage reads as no preference', () => {
     localStorage.setItem(STORAGE_KEY, 'en')
     expect(make().svc.getLocale().active).toBe('en')
     localStorage.setItem(STORAGE_KEY, 'fr')
     expect(make().svc.getLocale().active).toBe('zh')
   })
 
-  it('runs without localStorage (node boots): defaults on read, no-op on write', () => {
+  it('opens in the browser language when nothing is persisted, matching regional variants on their primary subtag', () => {
+    stubLanguages('en-GB', 'zh-CN')
+    expect(make().svc.getLocale().active).toBe('en')
+    stubLanguages('zh-Hant-TW')
+    expect(make().svc.getLocale().active).toBe('zh')
+    // An unshipped language walks the list to the first one this app ships.
+    stubLanguages('fr-FR', 'en-US')
+    expect(make().svc.getLocale().active).toBe('en')
+    // Only `language` populated: an empty ordered list, and a host that
+    // exposes no `languages` property at all.
+    vi.stubGlobal('navigator', { languages: [], language: 'en-US' })
+    expect(make().svc.getLocale().active).toBe('en')
+    vi.stubGlobal('navigator', { language: 'en-US' })
+    expect(make().svc.getLocale().active).toBe('en')
+    // No shipped language anywhere in the browser's preferences: zh remains
+    // the product default rather than an arbitrary near-match.
+    stubLanguages('fr-FR', 'de')
+    expect(make().svc.getLocale().active).toBe('zh')
+  })
+
+  it('runs outside a browser (node boots): the fallback decides, the machine language does not, writes no-op', () => {
     vi.stubGlobal('localStorage', undefined)
-    try {
-      const { svc } = make()
-      expect(svc.getLocale().active).toBe('zh')
-      svc.setLocale('en')
-      expect(svc.getLocale().active).toBe('en')
-    } finally {
-      vi.unstubAllGlobals()
-    }
+    vi.stubGlobal('window', undefined)
+    // Node exposes its own global navigator; without a window it must not
+    // reach the resolution at all.
+    stubLanguages('en-US')
+    const { svc } = make()
+    expect(svc.getLocale().active).toBe('zh')
+    svc.setLocale('en')
+    expect(svc.getLocale().active).toBe('en')
+  })
+
+  it('keeps the browser language out of the way once a preference exists', () => {
+    stubLanguages('en-US')
+    const { svc } = make()
+    svc.setLocale('zh')
+    expect(localStorage.getItem(STORAGE_KEY)).toBe('zh')
+    expect(make().svc.getLocale().active).toBe('zh')
   })
 
   it('exposes the two shipped locales with self-described labels', () => {
diff --git a/packages/client/test-runtime/src/index.ts b/packages/client/test-runtime/src/index.ts
index 7100e1595e..5ef5350434 100644
--- a/packages/client/test-runtime/src/index.ts
+++ b/packages/client/test-runtime/src/index.ts
@@ -38,6 +38,7 @@ export { TestWorkspaces } from './workspaces.ts'
 export { conversationSnapshot, workspaceListState } from './fixtures.ts'
 export type { SessionBehaviorOverrides, SessionFixture, Stabilizer } from './fixtures.ts'
 export { makeTranslate } from './translate.ts'
+export { usePinnedBrowserLanguages } from './locale-env.ts'
 
 /** Erased register face for the internal root call (the public declare seam holds the typing). */
 type ErasedRegister = (options: object, component: unknown) => () => void
diff --git a/packages/client/test-runtime/src/locale-env.ts b/packages/client/test-runtime/src/locale-env.ts
new file mode 100644
index 0000000000..f938557132
--- /dev/null
+++ b/packages/client/test-runtime/src/locale-env.ts
@@ -0,0 +1,29 @@
+/**
+ * Browser-language pin for specs that assert localized copy. A fresh
+ * LocaleService with no stored preference opens in the language `navigator`
+ * asks for, and jsdom reports the runner's own (`en-US`) — so a spec asserting
+ * the product's Chinese copy states the browser it assumes instead of
+ * inheriting the machine's.
+ */
+import { afterEach, beforeEach } from 'vitest'
+
+/**
+ * Pin `navigator.languages`/`navigator.language` for every test in the
+ * calling file (or describe block), restoring the environment's own values
+ * afterwards. Call at suite level, like the other vitest hooks.
+ * @param primary - most preferred BCP 47 tag; also becomes `navigator.language`.
+ * @param rest - further tags in preference order.
+ */
+export function usePinnedBrowserLanguages(primary: string, ...rest: string[]): void {
+  beforeEach(() => {
+    Object.defineProperty(navigator, 'languages', { value: [primary, ...rest], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: primary, configurable: true })
+  })
+  afterEach(() => {
+    // Deleting the own properties uncovers the environment's own accessors
+    // again (Navigator declares both readonly, hence the erased receiver).
+    const own = navigator as unknown as Record
+    delete own.languages
+    delete own.language
+  })
+}
diff --git a/packages/client/ui-conversation/README.i18n.yaml b/packages/client/ui-conversation/README.i18n.yaml
index aa7775ce87..db9786931e 100644
--- a/packages/client/ui-conversation/README.i18n.yaml
+++ b/packages/client/ui-conversation/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-conversation/README.md
-README.md: 7552e198190a2736092299953dfff61be9a07147
-README.zh.md: 7af337c03305d1da7019869befdd9cbf65584eac
+README.md: 66120f222de4b4d4707430a1ec310c6fe801c0c5
+README.zh.md: f5e953f363733341400a292a1946b4e298858b77
diff --git a/packages/client/ui-conversation/README.md b/packages/client/ui-conversation/README.md
index 7552e19819..66120f222d 100644
--- a/packages/client/ui-conversation/README.md
+++ b/packages/client/ui-conversation/README.md
@@ -24,6 +24,8 @@ A tool call declaring the `diff` render intent (the `write`/`edit` tools) render
 
 The chat flow projects consecutive model-retry nodes across retry turns into one stable, muted status row updated to the latest attempt; every retry event remains in the runtime snapshot and session log. Its frontend countdown anchors the scheduled delay to client receipt, avoiding host/browser clock skew, rounds remaining time up to seconds, and has a one-second floor. The latest unresolved retry uses a left-to-right text shimmer. Subsequent turn facts distinguish an attempt that started from one cancelled during backoff, while the Host running bit only controls the live animation; the row then shows a static completed or cancelled label. Normal policy rows show the finite retry maximum; always policy rows show `∞`. Activating the row reveals the latest exact retry delay and failure message. The client runtime removes each failed step's streaming tail before its retry node arrives, while the status remains visible after a later attempt succeeds.
 
+A `grep`/`glob` call declaring the `search` render intent renders its result inline, at the same render sites, through ui-primitives' `SearchBlock` — grep's matches grouped by file (each a collapsible header of `lineNumber: line` rows), glob's flat path list. `contract/search-card-model.ts` is the single derivation from the snapshot's `resultView`; unlike the terminal card it reads no `callView`, since a search has no matches or paths before `execute`, so a running search shows its summary alone. It yields null — the generic path — for any non-search result view, a `card` or `kind` this client version does not compile, and (because those ride the untrusted wire frame) a known kind whose `files`/`paths` is malformed. The keyed `SearchRow`, registered under both `grep` and `glob` since the derived `kind` decides the shape, carries the card resident below its summary; the render-site fallback keeps it behind the expand control. Both cap at `CHAT_SEARCH_MAX_LINES` (8) against the panel's 16. A capped search drops rows from the card, but the locator to the rest — grep/glob's `Full … stored at …` footer — lives only in the result text, so the derivation surfaces that as a recovery footer below the card when (and only when) the result was truncated; a settled call with no card at all (an errored search, a nested `run_code` sub-dispatch, a legacy generic result) falls back to its flattened result text so nothing is lost behind a bare summary ([decision](../../../.agents/notes/implemented/feature/2026-07-30-web-search-card.md)).
+
 Tool rows are slots too — the standalone tool ring (`ToolViewRegistry`/`ctx.toolviews`/outlet) is retired. The chat entry declares the keyed `'conversation.chat.toolview'` hole (session scope; the key space is runtime-open); its render site dispatches per row via `entryKey: toolName` with `GenericToolCard` as the call-site `fallback`. The owner payload is the uniform `ToolRowOwnerProps` (`callId`/`toolName`/`block`/`openFile`) and `ToolRowProps` pre-composes it with the session standard kit. A registrant is a plain plugin: `ctx.slots.register({ name: 'conversation.chat.toolview', key: '', inject? }, Row)` with `inject: ['slots', 'conversation']` as the load-order seam (apply mounts ConversationService after the chat registration, so the service being present guarantees the slot is declared); session differentiation happens inside the component (`useSessions` reading `parentId` — the bash sample is the third-party-posture exemplar). Trajectory/waterfall toolview slots share this shape and land with their own render sites (RendersCheck rejects a declaration nobody renders).
 
 The todo surfaces are two registrations over that shape, both plain registrant plugins with `inject: ['slots', 'conversation']`. `TodoRow` takes the `'conversation.chat.toolview'` key `todo_write` and summarizes what the call attempted (`/ 已完成 · ` parsed from its args, falling back to the generic summary on malformed or wrongly-shaped model JSON, and keeping the generic dot for non-ok execution states so a cancelled call never reads as a completed update). `TodoDock` takes the `'conversation.input.dock'` list slot at `order: -1` — above the queue rows — and is the plan strip: it reads the host-computed `todos` projection via `useProjection` (standing plan: latest `todo/write` with no later `turn/start`) and renders `TodoPanel`, which takes the plain list, hides itself while the list is empty, and starts collapsed as a header of title plus `"/ tasks ·  in progress"` (status glyphs are the figma check / progress / dashed-pending set). The dock adapter owns the selection so the panel stays a pure function of its props; the standing list lives here rather than in the row so the row stays one line. Anything the input-zone composer chain hides (a `conversation.composer` takeover such as ui-question's) hides the whole dock, this strip included.
@@ -34,6 +36,8 @@ Per-session UI state for selection and the active view lives in the declared cha
 
 The composer bar declares session-scoped single seats for `'conversation.input.plan'` (right of the local access-mode control) and `'conversation.input.model'` (immediately before the pending indicator and send/stop button), plus list slots for overlay, dock, left, and right input extensions. Feature packages own each control and its state; ui-conversation supplies placement, the `locked` owner prop, and the standard slot shares. The leading plus button is a Command launcher, not an attachment surface: it asks the session's `SlashController` to open only the `/` trigger's `command` source over the current textarea selection, while ui-slash's existing `MenuView` remains the sole floating menu and pick path. No file row, file input, upload protocol, or second menu component is introduced. While the `plan` projection's effective target is plan mode, InputBar swaps its textarea placeholder to the plan-task wording, localized through the `conversation` locale namespace this package registers (the `placeholder.plan` / `hint.plan` keys) and shared verbatim with the claimed `/plan` command hint (a host-folded value read through the standard-kit `useProjection`; owner-supplied placeholders win). A pending composer takeover remains mounted when another conversation view is active so the blocked agent can still receive its answer; without a pending interaction, the active-session composer belongs to Chat. The composer-bar slot itself is `session-maybe`: with no current session the same bar renders inert (machine faces absent, `disabled` owner prop) instead of swapping in a parallel disabled tree, so the textarea DOM survives the workspace pick; the strict-session control seats simply stay empty until a session exists.
 
+The chat stats line takes its token accounting from two generic token-meter projections read through the standard-kit `useProjection`: `tokenUsage` for full-log billing (billed input is uncached input plus cache reads and writes; cache hit divides cache reads by that total) and `contextPressure` for context occupancy. Visible nodes supply only the turn and step counts plus the LLM and tool wall times, which are window-scoped facts about what is on screen rather than accounting; durable token and context groups remain visible when compaction leaves no assistant node in the loaded window. A deployment without token-meter drops the token groups, and occupancy stays hidden until both provider pressure and route capacity are known. Occupancy is deliberately an approximation — its numerator and capacity are independent last-wins projection fields, not one atomic request observation ([rationale](../../llm/token-meter/README.md)). The inline stats row remains the sole context UI; the model selector has no circle or accessory.
+
 `src/client/` is organized for the future package split: `contract/` is the sole inter-domain shared face (`slots.ts` slot declarations + composed slot props including the tool-row contract, `views.ts` shared primitives, `tool-call-model.ts`); the `skeleton/`, `chat/`, and `toolviews/` (sample registrants) domain directories import contract files and never each other; `apply.ts` is the only assembly point allowed to import all three domains. The `/client` export surface is the contract only — `apply`/`inject`, the two service classes, and the `contract/` type families; implementation components (skeleton, chat rows) and the store factory stay internal and reach the page exclusively through apply's slot registrations (tests take them via the `./src/*` subpath).
 
 ## Model Experience
@@ -50,6 +54,7 @@ None; this package neither assembles nor sends a provider request.
 - **Stats-line durations cover the in-window flow only** — LLM and tool wall times fold the snapshot's assistant `timing` and tool call/result pairs, so nodes outside the loaded event window (older history) are not counted.
 - **Details panel is the minimal form and currently has no entry point** — selected call args/result raw display; the Input/Output/Metadata switch, Prev/Next stepping, and See-in-trajectory deep link are deferred. Tool rows stopped being details-panel click targets and nothing replaced that gesture, so `ChatViewInjected.openDetails` is implemented but uncalled and the panel (including its terminal card) is unreachable in the assembled application; its rendering stays covered by mounting it with a selection directly.
 - **Assistant per-message paging is a reserved slot** — drawn in the design, not implemented. The finalized content IconActions row (copy / branch / clock) ships under the last content-text assistant of each turn only; mid-turn narration and Think-only nodes stay chrome-free. Branch forks through the turn containing that message, increments the inherited title on the client, and then opens the child, while a fork or rename failure leaves the source selected.
+- **Sent user messages cannot be edited** — the user bubble's IconActions row carries clock / copy / branch only, and branching from the message is the nearest gesture. The control returns with the capability behind it: a client mutation over a settled user message, plus the host behavior for the turn that already consumed it ([decision](../../../.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.md)).
 - **The sparkle icon for the others tool row is a hand-drawn approximation** — the design glyph's vector geometry is not exportable locally; promotion into ui-primitives waits on an exact export.
 - **The approval panel's "Always allow this type" is deferred** — durable grants need a grant-storage design; only allow-once/reject answer today.
 - **TodoPanel truncates long item text to one ellipsized line** — the figma strip has no wrap or expand affordance; full text is not readable inline.
diff --git a/packages/client/ui-conversation/README.zh.md b/packages/client/ui-conversation/README.zh.md
index 7af337c033..f5e953f363 100644
--- a/packages/client/ui-conversation/README.zh.md
+++ b/packages/client/ui-conversation/README.zh.md
@@ -22,6 +22,8 @@
 
 聊天流会将跨重试轮次连续出现的模型重试节点投影为一个稳定的弱化状态行，并用最新一次尝试更新该行；每个重试事件仍保留在运行时快照与会话日志中。前端倒计时以客户端收到事件的时刻为计划延迟的起点，避免 Host 与浏览器的时钟偏差；剩余时间向上取整到秒，且下限为 1 秒。最近一次尚未完成的重试会显示从左到右的文字渐变动画。后续轮次事实用于区分已开始的尝试与在退避期间取消的尝试，Host 的 running 位只控制实时动画；随后该行会显示静态的已完成或已取消标签。normal 策略行显示有限重试上限；always 策略行显示 `∞`。激活该行会显示最近一次重试的精确延迟和失败消息。客户端运行时会在相应重试节点到达前移除每个失败步骤的流式输出尾部；后续某次尝试成功后，该状态仍保持可见。
 
+声明 `search` 渲染意图的 `grep`／`glob` 调用，会在同样的渲染点上通过 ui-primitives 的 `SearchBlock` 内联渲染其结果——grep 的匹配按文件分组（每个是一个可折叠的头，下辖 `lineNumber: line` 行），glob 是扁平路径列表。`contract/search-card-model.ts` 是从快照的 `resultView` 推导的唯一位置；与终端卡片不同，它不读 `callView`，因为搜索在 `execute` 前没有匹配或路径，所以运行中的搜索只显示摘要。对任何非搜索的结果视图、当前客户端版本无法编译的 `card` 或 `kind`、以及（因为这些都与不可信的 wire 帧同行）一个 `files`／`paths` 格式错误的已知 kind，它都返回 null，落回通用路径。键控的 `SearchRow` 因推导出的 `kind` 决定形态而同时注册在 `grep` 与 `glob` 下，把卡片常驻在摘要行下方；渲染点兜底行则把它保持在展开控件之后。两者上限都是 `CHAT_SEARCH_MAX_LINES`（8），面板为 16。被截断的搜索会从卡片里丢掉一些行，但通往其余部分的定位符——grep/glob 的 `Full … stored at …` 脚注——只存在于结果文本里，因此推导在（且仅在）结果被截断时把它作为恢复脚注画在卡片下方；一个完全没有卡片的已结算调用（出错的搜索、嵌套 `run_code` 子派发、旧日志的 generic 结果）则回退到其压平后的结果文本，从而不让任何内容丢失在一个光秃秃的摘要之后（[决策](../../../.agents/notes/implemented/feature/2026-07-30-web-search-card.md)）。
+
 工具行同样是 slot：独立工具环（`ToolViewRegistry`／`ctx.toolviews`／outlet）已经退役。聊天配置项声明键控的 `'conversation.chat.toolview'` 空位（Session scope；key 空间在运行时开放）；其渲染点逐行通过 `entryKey: toolName` 分发，并以 `GenericToolCard` 作为调用点 `fallback`。owner 载荷是统一的 `ToolRowOwnerProps`（`callId`／`toolName`／`block`／`openFile`），`ToolRowProps` 则预先将其与 Session 标准工具包组合。注册方只是普通插件：`ctx.slots.register({ name: 'conversation.chat.toolview', key: '', inject? }, Row)`，以 `inject: ['slots', 'conversation']` 作为加载顺序 seam（apply 在聊天注册后挂载 ConversationService，因此服务存在即可保证 slot 已声明）；Session 区分在组件内部完成（`useSessions` 读取 `parentId`，bash 示例是第三方姿态的范例）。Trajectory/waterfall（瀑布式事件）工具视图 slot 共享此形状，并随各自的渲染点落地（RendersCheck 会拒绝没有任何渲染方的声明）。
 
 审批经由本包声明的链接管编辑器：`ApprovalPanel` 注册为按选择器路由的 `'conversation.composer'` 配置项（ui-question 模式），在审批等待未决期间取代 InputBar 占据编辑器（琥珀色条、理由标题、来自运行中调用参数的配对命令行、一次性的拒绝／允许）。`contract/slots.ts` 中的 `PendingApproval` 领域面在运行时 `PendingWait` 载体之上拥有 wire 编码——带审计关联的 `ApprovalResponsePayload` 值；广播的 `approval/resolved` 帧使等待落定并恢复编辑器。侧边栏通过 manager 跟踪的 `waitingApproval` 列表位（未实例化会话同样点亮）镜像该阻塞状态，其优先级高于运行中圆环，直至问题解决。未决等待完全离开消息流：问题（ui-question）与审批（ApprovalPanel）都经编辑器接管作答，不再保留只读占位卡。编辑器底行的 Access 席位挂载 `PermissionSelect`，由 host 计算的 `permissions` 投影经标准工具包 `useProjection` 供数（key 缺席即隐藏 chip）；chip 打开 Menu 原语下拉，其中 kebab-case 预设名渲染为 Title Case 标签；普通安全预设会立即经输入栏注入的 `command` 回调提交 `/permission `，而 `danger-full-access` 在界面中显示为 `Full access`，选择后先打开页面内的 Modal 风险确认。用户勾选确认项前启用按钮始终不可用；取消、Escape、关闭按钮与点击遮罩都不会提交命令。
@@ -34,6 +36,8 @@ todo 两个面就是在该形状上的两个注册项，都是普通注册方插
 
 输入栏为 `'conversation.input.plan'`（位于本地 access 模式控件右侧）和 `'conversation.input.model'`（渲染在 pending 指示器与发送／停止按钮之前）声明会话作用域的单实例 seat，并为 overlay、dock、left 和 right 输入扩展声明列表 slot。各功能包拥有相应控件及其状态；ui-conversation 提供放置位置、`locked` owner prop 和标准 slot share。前置加号按钮是 Command launcher，而非附件入口：它要求当前会话的 `SlashController` 基于 textarea 当前 selection，只打开 `/` trigger 的 `command` source，同时 ui-slash 既有的 `MenuView` 仍是唯一的浮层菜单与 pick 路径。不引入 File 行、file input、上传协议或第二套菜单组件。当 `plan` 投影的有效目标为 plan mode 时，InputBar 将文本框 placeholder 切换为 plan 任务措辞，经本包注册的 `conversation` locale 命名空间（`placeholder.plan` / `hint.plan` 键）本地化，并与已认领 `/plan` 命令的提示逐字共用同一份文案（经标准套件 `useProjection` 读取的 host 折叠值；owner 提供的 placeholder 优先）。另一个会话视图活跃时，待处理的 composer 接管仍保持挂载，使被阻塞的 agent（智能体）仍能收到回答；没有待处理交互时，活跃会话的 composer 归 Chat 所有。composer bar slot 本身为 `session-maybe`：没有当前会话时，同一个 bar 以不可交互状态渲染（machine face 均缺席、`disabled` owner prop），而不是换入一棵平行的 disabled 树，因此选择 workspace 时 textarea DOM 不会被销毁；严格会话作用域的控件 seat 在会话存在之前保持为空。
 
+聊天统计行的 token 账目来自经标准套件 `useProjection` 读取的两个通用 token-meter 投影：`tokenUsage` 提供完整日志计费用量（计费输入为未缓存输入、缓存读取与缓存写入之和；缓存命中率以缓存读取除以该总量），`contextPressure` 提供上下文占用率。可见节点只提供轮次与步骤计数，以及 LLM（大语言模型）和工具的墙钟时间：这些是关于「屏幕上有什么」的窗口作用域事实，而非账目；压缩（compaction）使已加载窗口不再包含 assistant 节点时，持久 token 与上下文分组仍保持可见。未组合 token-meter 的部署会整组省略 token 分组；只有提供方压力与路由容量都已知时才显示占用率。占用率是刻意为之的近似值：它的分子与容量是两个相互独立的「后写覆盖」投影字段，并非同一次请求的原子观测（[原理](../../llm/token-meter/README.md)）。行内统计行仍是唯一的上下文 UI；模型选择器不增加圆环或附属控件。
+
 `src/client/` 按未来的包拆分组织：`contract/` 是唯一的跨领域共享表层（`slots.ts` slot 声明 + 组合后的 slot props，包括工具行契约、`views.ts` 共享原语、`tool-call-model.ts`）；`skeleton/`、`chat/` 和 `toolviews/`（示例注册方）领域目录只导入 contract 文件，彼此绝不导入；`apply.ts` 是唯一允许导入全部三个领域的组装点。`/client` 导出表层只包含契约：`apply`／`inject`、两个服务类和 `contract/` 类型家族；实现组件（骨架、聊天行）与 store factory 保持内部状态，只能通过 apply 的 slot 注册到达页面（测试通过 `./src/*` 子路径获取它们）。
 
 ## 模型体验
@@ -47,9 +51,10 @@ todo 两个面就是在该形状上的两个注册项，都是普通注册方插
 ## 已知限制与暂缓事项
 
 - **压缩标记不显示规模**：该行尚不报告检查点替换了多少条消息或哪段范围。
-- **统计行的耗时只覆盖窗口内消息流**：LLM（大语言模型）与工具墙钟时间由快照的 assistant `timing` 与工具 call/result 配对折算，落在已加载事件窗口之外的节点（更早的历史）不计入。
+- **统计行的耗时只覆盖窗口内消息流**：LLM 与工具墙钟时间由快照的 assistant `timing` 与工具 call/result 配对折算，落在已加载事件窗口之外的节点（更早的历史）不计入。
 - **详情面板是最小形态，且当前没有入口**：以原始形式显示已选择调用的参数／结果；Input/Output/Metadata 切换、Prev/Next 步进与 See-in-trajectory 深链接暂缓实现。工具行已不再是详情面板的点击目标，且没有任何手势接替它，因此 `ChatViewInjected.openDetails` 虽已实现却无人调用，该面板（含其终端卡片）在组装后的应用中不可达；其渲染仍由直接以选中态挂载它来覆盖。
 - **assistant 逐消息分页是预留 slot**：设计中已有图稿，尚未实现。已定稿的内容 IconActions 行（复制／分支／时钟）只挂在每个轮次中最后一条带 text 内容的 assistant 下；轮次中间的叙述与纯 Think 节点不带 chrome。分支会 fork 到包含该消息的轮次末尾，在 client 端递增继承标题后打开子会话，而 fork 或改名失败时源会话保持选中。
+- **已发送的 user 消息无法编辑**：user 气泡的 IconActions 行只有时钟／复制／分支，从该消息分支是最接近的手势。该控件要与其背后的能力一起回归：既需要针对已定稿 user 消息的 client 变更，也需要 host 侧对已经消费过它的轮次给出行为（[决策](../../../.agents/notes/implemented/simplification/2026-07-31-drop-user-message-edit-stub.md)）。
 - **others 工具行的闪光图标是手绘近似版本**：无法在本地导出设计字形的矢量几何；等到存在精确导出后再将其提升到 ui-primitives。
 - **审批面板的「始终允许此类」暂缓**：持久授权需要授权存储设计；今天只能回答允许一次／拒绝。
 - **TodoPanel 将过长条目截成单行省略号**：figma 条没有换行或展开入口，完整文本无法在行内读完。
diff --git a/packages/client/ui-conversation/package.json b/packages/client/ui-conversation/package.json
index 8a9173982b..88c09b5550 100644
--- a/packages/client/ui-conversation/package.json
+++ b/packages/client/ui-conversation/package.json
@@ -45,12 +45,14 @@
     "@deepseek-ai/dsh-client-ui-slash": "^0.0.1",
     "@deepseek-ai/dsh-client-ui-slots": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
+    "@deepseek-ai/dsh-token-meter": "^0.0.1",
     "cordis": "^4.0.0-rc.7",
     "react": "^18.2.0"
   },
   "devDependencies": {
     "@deepseek-ai/dsh-client-locale": "workspace:^",
     "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:^",
     "@deepseek-ai/dsh-goal": "workspace:^",
     "@deepseek-ai/dsh-plan-mode": "workspace:^",
     "@deepseek-ai/dsh-client-ui-layout": "workspace:^",
@@ -60,6 +62,7 @@
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@deepseek-ai/dsh-permission": "workspace:^",
     "@deepseek-ai/dsh-session-projection": "workspace:^",
+    "@deepseek-ai/dsh-token-meter": "workspace:^",
     "@deepseek-ai/dsh-tool-todo": "workspace:^",
     "@types/react": "~18.3.1",
     "cordis": "^4.0.0-rc.7",
diff --git a/packages/client/ui-conversation/src/client/apply.ts b/packages/client/ui-conversation/src/client/apply.ts
index 0be0f4f534..9d569eba29 100644
--- a/packages/client/ui-conversation/src/client/apply.ts
+++ b/packages/client/ui-conversation/src/client/apply.ts
@@ -20,6 +20,8 @@ import { InputBar } from './skeleton/InputBar.tsx'
 import { ChatView } from './chat/ChatView.tsx'
 import { StatsLine } from './chat/StatsLine.tsx'
 import { bashToolviewSample } from './toolviews/bash-sample.tsx'
+import { searchToolview } from './toolviews/search-row.tsx'
+import { readToolview } from './toolviews/read-row.tsx'
 import { fileMutationToolview } from './toolviews/file-mutation-row.tsx'
 import { webToolview } from './toolviews/web-row.tsx'
 import { ApprovalPanel } from './skeleton/ApprovalPanel.tsx'
@@ -320,6 +322,14 @@ export function apply(ctx: Context): void {
   // (ToolRow-matching Bash · {description} chrome; scoped badge in child sessions).
   ctx.plugin(bashToolviewSample)
 
+  // The grep/glob search row rides the same seam: one component registered
+  // under both tool names, since both declare the same search render intent.
+  ctx.plugin(searchToolview)
+
+  // The read row rides the same seam (a product registration, not a sample):
+  // Read · {path} chrome with the file's read card resident below it.
+  ctx.plugin(readToolview)
+
   // The write/edit rows ride the same seam: a file-mutation call declares the
   // diff render intent, so these rows stack the applied diff card under their
   // path-link summary (the terminal card's posture, applied to diffs).
diff --git a/packages/client/ui-conversation/src/client/chat/GenericToolCard.module.css b/packages/client/ui-conversation/src/client/chat/GenericToolCard.module.css
index 13a4ef9d62..d21f6d3712 100644
--- a/packages/client/ui-conversation/src/client/chat/GenericToolCard.module.css
+++ b/packages/client/ui-conversation/src/client/chat/GenericToolCard.module.css
@@ -1,7 +1,8 @@
-/* The generic card grows a resident web card under its summary row when the
-   tool declares the `web` render intent but has no keyed row of its own (the
-   web_search/web_fetch rows register their own WebRow). A column around the
-   ToolRow keeps the row's own 24px height. */
+/* GenericToolCard resident cards: a read-declaring or web-declaring tool
+   without its own keyed row (e.g. web_fetch) grows a resident card under its
+   summary row. A column around the ToolRow keeps the row's own 24px height, so
+   the read card renders identically to the keyed ReadRow and the web card to
+   the web_search/web_fetch WebRow. */
 
 .card {
   display: flex;
@@ -10,6 +11,7 @@
 
 /* Row indentation matches ToolRow's expanded bodies (16px leading + 6px gap),
    and replaces the primitive's standalone vertical margin with the flow's. */
+.read,
 .web {
   margin: 4px 0 4px 22px;
 }
diff --git a/packages/client/ui-conversation/src/client/chat/GenericToolCard.tsx b/packages/client/ui-conversation/src/client/chat/GenericToolCard.tsx
index faadcf090b..40c209627b 100644
--- a/packages/client/ui-conversation/src/client/chat/GenericToolCard.tsx
+++ b/packages/client/ui-conversation/src/client/chat/GenericToolCard.tsx
@@ -7,9 +7,11 @@
 import type { ReactNode } from 'react'
 import {
   IconApiOutline14, IconBrowseOutline16, IconCodeOutline16, IconEditOutline16, IconSearchOutline16, IconSparkle16,
-  IconThinkOutline14, WebBlock,
+  IconThinkOutline14, ReadBlock, WebBlock,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { ChatViewSlotProps, ToolRowOwnerProps } from '../contract/slots.ts'
+import { searchCardModel } from '../contract/search-card-model.ts'
+import { CHAT_READ_MAX_LINES, readCardModel } from '../contract/read-card-model.ts'
 import { diffCardModel } from '../contract/diff-card-model.ts'
 import { terminalCardModel, terminalFailed } from '../contract/terminal-card-model.ts'
 import { CHAT_WEB_MAX_SOURCES, webCardModel } from '../contract/web-card-model.ts'
@@ -37,6 +39,8 @@ export interface GenericToolCardProps extends ToolRowOwnerProps {
 export function GenericToolCard({ toolName, block, cwd, openFile, inspect, t }: GenericToolCardProps) {
   const model = toolRowModel(toolName, block, cwd)
   const terminal = terminalCardModel(block, cwd)
+  const search = searchCardModel(block)
+  const read = readCardModel(block, cwd)
   const diff = diffCardModel(block)
   const web = webCardModel(block)
   // A failing exit status is the terminal card's own error signal (the call
@@ -53,8 +57,9 @@ export function GenericToolCard({ toolName, block, cwd, openFile, inspect, t }:
       icon={VARIANT_ICONS[model.variant]}
       title={model.title}
       // A terminal presenter's description is the contract's above-card text, so
-      // it outranks the args-derived summary here exactly as it does in BashRow.
-      summary={terminal?.description ?? model.summary}
+      // it outranks the args-derived summary here exactly as it does in BashRow;
+      // a search result view's replacement title outranks it the same way.
+      summary={terminal?.description ?? search?.title ?? model.summary}
       // Single-file tools never expose an args body — the path link is the only
       // args interaction. A diff card is not an args body: a write/edit row is
       // single-file AND carries a diff, so the card expands under the path link.
@@ -62,6 +67,7 @@ export function GenericToolCard({ toolName, block, cwd, openFile, inspect, t }:
       output={model.output}
       errorSummary={model.errorSummary}
       terminal={terminal}
+      search={search}
       diff={diff}
       state={state}
       filePath={model.filePath}
@@ -69,6 +75,18 @@ export function GenericToolCard({ toolName, block, cwd, openFile, inspect, t }:
       inspect={inspect}
     />
   )
+  // A read-declaring tool without its own keyed row lands here (e.g. web_fetch),
+  // so the file's read card is resident below the summary row exactly as the
+  // keyed ReadRow draws it. Only wrap when a card is present, so every other
+  // tool keeps the bare ToolRow.
+  if (read !== null) {
+    return (
+      

+        {row}
+        
+      

+    )
+  }
   // A web-declaring tool without its own keyed row lands here; its card is
   // resident under the summary, mirroring WebRow (and BashRow's terminal card).
   if (web === null) return row
diff --git a/packages/client/ui-conversation/src/client/chat/MessageIconActions.tsx b/packages/client/ui-conversation/src/client/chat/MessageIconActions.tsx
index dbb8a8628e..cd6b0a36ce 100644
--- a/packages/client/ui-conversation/src/client/chat/MessageIconActions.tsx
+++ b/packages/client/ui-conversation/src/client/chat/MessageIconActions.tsx
@@ -1,10 +1,9 @@
 // Shared IconActions chrome for user and assistant messages: copy live,
-// branch wired through onBranch, date-aware clock,
-// optional edit stub.
+// branch wired through onBranch, date-aware clock.
 
 import { useCallback } from 'react'
 import {
-  IconBranchOutline16, IconCopyOutline16, IconEditOutline16, Tooltip,
+  IconBranchOutline16, IconCopyOutline16, Tooltip,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { ChatViewSlotProps } from '../contract/slots.ts'
 import { formatMessageClock, writeClipboard } from './message-chrome.ts'
@@ -18,8 +17,6 @@ export interface MessageIconActionsProps {
   time: number
   /** Clock before icons (user) or after (assistant). */
   clock: 'start' | 'end'
-  /** When true, append the stub edit control (user bubble). */
-  edit?: boolean | undefined
   /** Fork the session at this message. */
   onBranch?: (() => void) | undefined
   /** Parent layout class composed onto the actions row. */
@@ -30,11 +27,11 @@ export interface MessageIconActionsProps {
 
 /**
  * Copy / branch (/ clock) IconActions row shared by user and assistant chrome.
- * @param props - Copy text, event time, clock side, optional edit, branch callback, className.
+ * @param props - Copy text, event time, clock side, branch callback, className.
  * @returns The actions row element.
  */
 export function MessageIconActions({
-  text, time, clock, edit, onBranch, className, t,
+  text, time, clock, onBranch, className, t,
 }: MessageIconActionsProps) {
   const day = useCalendarDay()
   const onCopy = useCallback(() => {
@@ -58,13 +55,6 @@ export function MessageIconActions({
           
         
       
-      {edit === true && (
-        
-          
-        
-      )}
       {clock === 'end' ? clockEl : null}
     
   )
diff --git a/packages/client/ui-conversation/src/client/chat/MessageItem.tsx b/packages/client/ui-conversation/src/client/chat/MessageItem.tsx
index 7dea5eb58a..6f55cd3d01 100644
--- a/packages/client/ui-conversation/src/client/chat/MessageItem.tsx
+++ b/packages/client/ui-conversation/src/client/chat/MessageItem.tsx
@@ -1,5 +1,5 @@
 // MessageItem: simple chat nodes — user bubble (right-aligned, with
-// clock + copy / branch / edit IconActions), steering (badged bubble), context
+// clock + copy / branch IconActions), steering (badged bubble), context
 // injection, compaction marker, retry disclosure, and unknown-surface JSON rows.
 
 import { memo, useEffect, useMemo, useState } from 'react'
@@ -158,7 +158,6 @@ export const MessageItem = memo(function MessageItem({
             text={text}
             time={node.time}
             clock="start"
-            edit
             onBranch={onFork === undefined ? undefined : () => { onFork(node.seq) }}
             className={css.actions}
             t={t}
diff --git a/packages/client/ui-conversation/src/client/chat/StatsLine.tsx b/packages/client/ui-conversation/src/client/chat/StatsLine.tsx
index 4b9446211c..4cb5df2565 100644
--- a/packages/client/ui-conversation/src/client/chat/StatsLine.tsx
+++ b/packages/client/ui-conversation/src/client/chat/StatsLine.tsx
@@ -3,43 +3,35 @@
 // active conversation scrollport (see ConversationRoot data-conversation-scroll).
 
 import { Fragment, memo, useMemo } from 'react'
-import type { ConversationSnapshot } from '@deepseek-ai/dsh-client-runtime/client'
+import type { ConversationSnapshot, UseProjection } from '@deepseek-ai/dsh-client-runtime/client'
 import type { SnapshotSelectorHook } from '@deepseek-ai/dsh-client-ui-slots'
+import type { ContextPressureProjection, TokenUsageProjection } from '@deepseek-ai/dsh-token-meter/client'
 import css from './StatsLine.module.css'
 
-interface UsageTotals {
+interface WindowStats {
   turns: number
   steps: number
   /** Summed request wall time (step/start → assistant/message); 0 when no node carries timing. */
   llmMs: number
   /** Summed tool wall time (tool/call → tool/result); 0 when no pair is in-window. */
   toolMs: number
-  /** Prompt-side tokens: inputTokens + cacheReadTokens. */
-  inputTokens: number
-  outputTokens: number
-  cacheHitPct: number | null
-}
-
-/** Token accounting slice of assistant `usage` (typed upstream as unknown). */
-interface UsageLike {
-  inputTokens?: number
-  outputTokens?: number
-  cacheReadTokens?: number
 }
 
 /**
- * Fold assistant and tool-result nodes into display totals.
+ * Fold assistant and tool-result nodes into the window-scoped display totals.
+ *
+ * Counts and wall times describe the loaded window on purpose — they answer
+ * "what is on screen". Token accounting deliberately does NOT come from here:
+ * the window is paged and compaction rewrites it, so billing rides the durable
+ * `tokenUsage` projection instead.
  * @param nodes - snapshot nodes.
- * @returns totals; cacheHitPct null until any cache accounting arrives.
+ * @returns visible counts and summed wall times.
  */
-export function deriveStats(nodes: ConversationSnapshot['nodes']): UsageTotals {
+export function deriveStats(nodes: ConversationSnapshot['nodes']): WindowStats {
   const turns = new Set()
   let steps = 0
   let llmMs = 0
   let toolMs = 0
-  let input = 0
-  let output = 0
-  let cacheRead = 0
   for (const node of nodes) {
     if (node.kind === 'tool-result') {
       if (node.callTime !== null) toolMs += Math.max(0, node.time - node.callTime)
@@ -51,22 +43,8 @@ export function deriveStats(nodes: ConversationSnapshot['nodes']): UsageTotals {
     if (node.timing !== undefined && node.timing.stepStartTime !== null) {
       llmMs += Math.max(0, node.timing.completedTime - node.timing.stepStartTime)
     }
-    const usage = node.usage as UsageLike | undefined
-    if (usage === undefined) continue
-    input += usage.inputTokens ?? 0
-    output += usage.outputTokens ?? 0
-    cacheRead += usage.cacheReadTokens ?? 0
-  }
-  const denom = input + cacheRead
-  return {
-    turns: turns.size,
-    steps,
-    llmMs,
-    toolMs,
-    inputTokens: input + cacheRead,
-    outputTokens: output,
-    cacheHitPct: denom === 0 ? null : Math.round((cacheRead / denom) * 100),
   }
+  return { turns: turns.size, steps, llmMs, toolMs }
 }
 
 /**
@@ -94,21 +72,82 @@ export function formatDuration(ms: number): string {
   return `${Math.floor(whole / 60)}m${whole % 60}s`
 }
 
-/** Props: the conversation-snapshot selector (dock registration or unit mount). */
-export interface StatsLineProps { useSession: SnapshotSelectorHook }
+/**
+ * Cache-hit share of prompt-side input over the whole durable log.
+ * @param usage - the session's token-usage projection value.
+ * @returns rounded integer percent, or null when no input was billed.
+ */
+export function cacheHitPercent(usage: TokenUsageProjection): number | null {
+  const denominator = billedInputTokens(usage)
+  return denominator === 0
+    ? null
+    : Math.round(usage.cacheReadTokens / denominator * 100)
+}
 
-export const StatsLine = memo(function StatsLine({ useSession }: StatsLineProps) {
+/** Sum the three disjoint prompt-side billing buckets. */
+function billedInputTokens(usage: TokenUsageProjection): number {
+  return usage.uncachedInputTokens + usage.cacheReadTokens + usage.cacheWriteTokens
+}
+
+interface ContextOccupancy {
+  percent: number
+  contextWindow: number
+}
+
+/**
+ * Approximate context occupancy, using the TUI's integer rounding and upper
+ * clamp. The numerator and capacity are independent last-wins projection
+ * fields, so this is a reference figure rather than an exact measurement of one
+ * request (see the token-meter README).
+ * @param pressure - the session's context-pressure projection value.
+ * @returns occupancy and its denominator, or null until both values are known.
+ */
+export function contextOccupancy(
+  pressure: ContextPressureProjection | undefined,
+): ContextOccupancy | null {
+  if (pressure?.pressureTokens === undefined || pressure.contextWindow === undefined) return null
+  return {
+    percent: Math.min(100, Math.round(pressure.pressureTokens / pressure.contextWindow * 100)),
+    contextWindow: pressure.contextWindow,
+  }
+}
+
+/** Props: the conversation-snapshot selector plus the projection read seat. */
+export interface StatsLineProps {
+  useSession: SnapshotSelectorHook
+  useProjection: UseProjection
+}
+
+export const StatsLine = memo(function StatsLine({ useSession, useProjection }: StatsLineProps) {
   const nodes = useSession(s => s.nodes)
+  const usage = useProjection('tokenUsage')
+  const pressure = useProjection('contextPressure')
   const stats = useMemo(() => deriveStats(nodes), [nodes])
-  if (stats.steps === 0) return null
   // Pipe-separated groups (figma stats strip); a group with no data drops out whole.
-  const groups: string[] = [`${stats.turns} turns · ${stats.steps} steps`]
-  const durations: string[] = []
-  if (stats.llmMs > 0) durations.push(`LLM ${formatDuration(stats.llmMs)}`)
-  if (stats.toolMs > 0) durations.push(`Tool call ${formatDuration(stats.toolMs)}`)
-  if (durations.length > 0) groups.push(durations.join(' · '))
-  if (stats.cacheHitPct !== null) groups.push(`Cache hit ${stats.cacheHitPct}%`)
-  groups.push(`Input ${formatTokens(stats.inputTokens)} tok · Output ${formatTokens(stats.outputTokens)} tok`)
+  const groups: string[] = []
+  if (stats.steps > 0) {
+    groups.push(`${stats.turns} turns · ${stats.steps} steps`)
+    const durations: string[] = []
+    if (stats.llmMs > 0) durations.push(`LLM ${formatDuration(stats.llmMs)}`)
+    if (stats.toolMs > 0) durations.push(`Tool call ${formatDuration(stats.toolMs)}`)
+    if (durations.length > 0) groups.push(durations.join(' · '))
+  }
+  const context = contextOccupancy(pressure)
+  if (context !== null) {
+    groups.push(`Context ${context.percent}% of ${formatTokens(context.contextWindow)}`)
+  }
+  // Billing rides the durable projection, so these survive paging and
+  // compaction. Suppress the empty projection on a brand-new session.
+  if (usage !== undefined
+    && (stats.steps > 0 || billedInputTokens(usage) > 0 || usage.outputTokens > 0)) {
+    const cacheHit = cacheHitPercent(usage)
+    if (cacheHit !== null) groups.push(`Cache hit ${cacheHit}%`)
+    groups.push(
+      `Input ${formatTokens(billedInputTokens(usage))} tok`
+      + ` · Output ${formatTokens(usage.outputTokens)} tok`,
+    )
+  }
+  if (groups.length === 0) return null
   return (
     
+      {/* jscpd:ignore-end */}
+      {read !== null && (
+        
+      )}
+    
+  )
+}
+
+/**
+ * The read row as a plain registrant plugin. `inject` carries the load-order
+ * seam: requiring the conversation service guarantees the chat entry (and with
+ * it the 'conversation.chat.toolview' declaration) is registered —
+ * ui-conversation's apply mounts the service after the chat entry.
+ */
+export const readToolview = {
+  name: 'read-toolview',
+  inject: ['slots', 'conversation'],
+  /**
+   * Register the read row into the chat view's keyed toolview hole.
+   * @param ctx - registrant context (disposal rides ctx.effect inside slots.register).
+   */
+  apply(ctx: Context): void {
+    ctx.slots.register({ name: 'conversation.chat.toolview', key: 'read' }, ReadRow)
+  },
+}
diff --git a/packages/client/ui-conversation/src/client/toolviews/search-row.module.css b/packages/client/ui-conversation/src/client/toolviews/search-row.module.css
new file mode 100644
index 0000000000..21908bd9e1
--- /dev/null
+++ b/packages/client/ui-conversation/src/client/toolviews/search-row.module.css
@@ -0,0 +1,117 @@
+/* Search toolview: same geometry/tokens as ToolRow and BashRow (figma
+   Search · summary), plus the search card the row stacks resident under its
+   summary line. */
+
+/* Summary line over the search card; the summary row keeps its own 24px
+   height, so the card is a column around it rather than a change to it. */
+.card {
+  display: flex;
+  flex-direction: column;
+}
+
+/* Row indentation matches ToolRow's expanded bodies (16px leading + 6px gap),
+   and replaces the primitive's standalone vertical margin with the flow's. */
+.search {
+  margin: 4px 0 4px 22px;
+}
+
+.root {
+  position: relative; /* sweep-glare overlay anchor */
+  overflow: hidden;
+  display: flex;
+  align-items: center;
+  height: 24px;
+  min-width: 0;
+}
+
+/* Running sweep glare — same deepsuite ShimmerText pattern as ToolRow / BashRow. */
+.root[data-state='running']::after {
+  content: '';
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  width: 300px;
+  background: linear-gradient(
+    90deg,
+    transparent 0%,
+    color-mix(in srgb, var(--dsw-alias-bg-base) 60%, transparent) 55%,
+    transparent 100%
+  );
+  animation: dsh-search-row-sweep 2.6s ease-out infinite;
+  pointer-events: none;
+}
+
+@keyframes dsh-search-row-sweep {
+  0% { left: -300px; }
+  90%, 100% { left: 100%; }
+}
+
+.leading {
+  flex: none;
+  width: 16px;
+  height: 16px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  margin-right: 6px;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.title {
+  flex: none;
+  font-size: 14px;
+  line-height: 24px;
+  color: var(--dsw-alias-label-secondary);
+}
+
+.sep {
+  flex: none;
+  width: 2px;
+  height: 2px;
+  border-radius: 1px;
+  margin: 0 8px;
+  background: var(--dsw-alias-label-caption);
+}
+
+.summary {
+  flex: 1 1 auto;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-size: 14px;
+  line-height: 24px;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.visuallyHidden {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  overflow: hidden;
+  clip: rect(0 0 0 0);
+  white-space: nowrap;
+}
+
+/* The result text for an errored search, indented to the card's own column and
+   in the error tone, standing in for the search card the failure path does not
+   produce. */
+.failure {
+  margin: 4px 0 4px 22px;
+  white-space: pre-wrap;
+  overflow-wrap: anywhere;
+  font: var(--dsw-font-xs-13);
+  color: var(--dsw-alias-state-error-primary);
+}
+
+/* The recovery footer for a capped search: the model-facing result text (its
+   `Full … stored at …` locator) shown below the card in the muted tone, since
+   the card holds only the retained rows. Same column indent as the card body. */
+.recovery {
+  margin: 4px 0 4px 22px;
+  white-space: pre-wrap;
+  overflow-wrap: anywhere;
+  font: var(--dsw-font-xs-13);
+  color: var(--dsw-alias-label-tertiary);
+}
diff --git a/packages/client/ui-conversation/src/client/toolviews/search-row.tsx b/packages/client/ui-conversation/src/client/toolviews/search-row.tsx
new file mode 100644
index 0000000000..5ea72e4a25
--- /dev/null
+++ b/packages/client/ui-conversation/src/client/toolviews/search-row.tsx
@@ -0,0 +1,96 @@
+// Search toolview registrant: the keyed toolview hole (ctx.slots.register +
+// ToolRowProps only — never imports the chat domain). One SearchRow component
+// registered under both `grep` and `glob`, since both tools declare the same
+// `card: 'search'` render intent and render as one visual object; the row reads
+// the `kind` discriminant off the derived model to draw grouped matches or a
+// path list. Product chrome matches ToolRow / BashRow (Search · {summary}).
+//
+// A search call declares its render intent result-time only, so this row's
+// search card is resident below the summary rather than expand-gated: the row
+// itself has no expand control, and the card's own copy, per-file collapse, and
+// head/tail expand are the row's only interactions. CHAT_SEARCH_MAX_LINES is
+// passed as `maxLines` — the chat flow's tighter cap over the block's own
+// default of 16 — so a large result stays bounded in the message flow.
+
+import type { Context } from 'cordis'
+import { IconSearchOutline16, SearchBlock, StateDot } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { ToolRowProps } from '../contract/slots.ts'
+import { CHAT_SEARCH_MAX_LINES, searchCardModel } from '../contract/search-card-model.ts'
+import { toolRowModel, type ToolRowState } from '../contract/tool-call-model.ts'
+import { rowResultText, rowStateStatus } from '../contract/toolview-status.ts'
+import css from './search-row.module.css'
+
+/** Leading-slot glyph substitution: the search icon yields to the terminal
+ *  state semantic (error = red, interrupted = amber). Running keeps the icon —
+ *  the row sweep carries the in-flight signal. */
+function leadingFor(state: ToolRowState) {
+  switch (state) {
+    case 'error': return 
+    case 'stopped': return 
+    default: return 
+  }
+}
+
+/**
+ * Search row: icon + Search · {summary} in the shared ToolRow chrome, with the
+ * completed search's card resident below it, and — when the result was capped —
+ * the recovery footer below the card. The summary row is not a details-panel
+ * control, so the card's copy, per-file collapse, and expand controls are the
+ * row's only interactions. Registered under both `grep` and `glob`; the derived
+ * model's `kind` decides the card shape.
+ */
+export function SearchRow({ toolName, block }: ToolRowProps) {
+  const model = toolRowModel(toolName, block)
+  const search = searchCardModel(block)
+  const status = rowStateStatus(model.state)
+  // A settled call with no search card — an errored search (grep/glob emit no
+  // result view on error), a successful nested run_code sub-dispatch, or a
+  // legacy generic result — has its model-facing text nowhere else to go, since
+  // the keyed SearchRow owns this render slot. Surface it as the fallback body.
+  // A running call ('kind' absent) has no result to flatten; rowResultText
+  // returns null for it, so the arm stays closed until settle.
+  const settled = 'kind' in block
+  const fallback = search === null && settled ? rowResultText(block) : null
+  return (
+    

+      

+        {leadingFor(model.state)}
+        {status !== null && {status}}
+        {model.title}
+        
+        {/* The result view's replacement title outranks the args-derived
+            summary, matching the terminal card's description precedence. */}
+        {search?.title ?? model.summary}
+      

+      {search !== null && (
+        
+      )}
+      {/* A capped search drops rows from the card; its recovery locator (the
+          `Full … stored at …` footer) lives only in the result text, so show it
+          below the card so the one path to the dropped rows survives. */}
+      {search?.recovery !== undefined && 
{search.recovery}
}
+      {fallback !== null && 
{fallback}
}
+    

+  )
+}
+
+/**
+ * The search toolview as a plain registrant plugin. `inject` carries the
+ * load-order seam: requiring the conversation service guarantees the chat entry
+ * (and with it the 'conversation.chat.toolview' declaration) is registered.
+ * The one component registers under both keys, since `grep` and `glob` are the
+ * same visual object discriminated only by the result view's `kind`.
+ */
+export const searchToolview = {
+  name: 'search-toolview',
+  inject: ['slots', 'conversation'],
+  /**
+   * Register the search row into the chat view's keyed toolview hole under both
+   * the `grep` and `glob` tool names.
+   * @param ctx - registrant context (disposal rides ctx.effect inside slots.register).
+   */
+  apply(ctx: Context): void {
+    ctx.slots.register({ name: 'conversation.chat.toolview', key: 'grep' }, SearchRow)
+    ctx.slots.register({ name: 'conversation.chat.toolview', key: 'glob' }, SearchRow)
+  },
+}
diff --git a/packages/client/ui-conversation/tests/apply-inject.spec.tsx b/packages/client/ui-conversation/tests/apply-inject.spec.tsx
index 9806850db2..45a944b393 100644
--- a/packages/client/ui-conversation/tests/apply-inject.spec.tsx
+++ b/packages/client/ui-conversation/tests/apply-inject.spec.tsx
@@ -15,7 +15,7 @@
 // chat-toolview-slot.spec.tsx.
 
 import { describe, expect, it, vi } from 'vitest'
-import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { SlotTestRuntime, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import type { SessionBehaviorOverrides } from '@deepseek-ai/dsh-client-test-runtime'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
 import type { ISession, SessionId } from '@deepseek-ai/dsh-client-runtime/client'
@@ -25,6 +25,10 @@ import type {
 } from '@deepseek-ai/dsh-client-ui-conversation/client'
 import type { createChatStore } from '../src/client/stores.ts'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 const ROOT = 'root-1' as SessionId
 
 type ChatInstance = ReturnType['create']>
diff --git a/packages/client/ui-conversation/tests/assembly-surfaces.spec.tsx b/packages/client/ui-conversation/tests/assembly-surfaces.spec.tsx
index a6c48e5ab8..3ddaef873e 100644
--- a/packages/client/ui-conversation/tests/assembly-surfaces.spec.tsx
+++ b/packages/client/ui-conversation/tests/assembly-surfaces.spec.tsx
@@ -24,9 +24,13 @@ import { cleanup, fireEvent, waitFor, within } from '@testing-library/react'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
 import type { ISession, SessionId, TodoItem, ToolResultNode } from '@deepseek-ai/dsh-client-runtime/client'
 import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
-import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { SlotTestRuntime, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-conversation/client'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 const SID = 's1' as SessionId
 
 /** jsdom has no ResizeObserver; the composer seat publishes its height through one. */
diff --git a/packages/client/ui-conversation/tests/chat-apply.spec.tsx b/packages/client/ui-conversation/tests/chat-apply.spec.tsx
index 239f690998..33342a49e5 100644
--- a/packages/client/ui-conversation/tests/chat-apply.spec.tsx
+++ b/packages/client/ui-conversation/tests/chat-apply.spec.tsx
@@ -9,12 +9,16 @@
 // stops at the assembly surface.
 
 import { describe, expect, it, vi } from 'vitest'
-import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { SlotTestRuntime, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
 import type { SessionId } from '@deepseek-ai/dsh-client-runtime/client'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-conversation/client'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 const ROOT = 'root-1' as SessionId
 const CHILD = 'child-1' as SessionId
 
@@ -84,14 +88,15 @@ describe('apply wiring', () => {
     await b.runtime.dispose()
   })
 
-  it('mounts the bash sample, the file-mutation rows, the web rows, and the product rows as keyed entries through the load-order seam', async () => {
+  it('mounts the bash sample, the search rows, the read row, the file-mutation rows, the web rows, and the product rows as keyed entries through the load-order seam', async () => {
     const b = await bench()
     // Every registrant plugin's inject: ['slots', 'conversation'] resolved — the
     // service being present implies the chat entry declared the hole first. The
-    // file-mutation registrant claims both write and edit for the diff card; the
-    // web rows register one component under both web tool names.
+    // one search row registers under both grep and glob; the file-mutation
+    // registrant claims both write and edit for the diff card; the web rows
+    // register one component under both web tool names.
     const entries = b.slots.entries('conversation.chat.toolview')
-    expect(entries.map(e => e.options.key)).toEqual(['bash', 'edit', 'write', 'web_search', 'web_fetch', 'todo_write', 'ask_user_question'])
+    expect(entries.map(e => e.options.key)).toEqual(['bash', 'grep', 'glob', 'read', 'edit', 'write', 'web_search', 'web_fetch', 'todo_write', 'ask_user_question'])
     // Stats stick with the composer (not inside ChatView).
     expect(b.slots.entries('conversation.composer.dock').map(e => e.options.id)).toEqual(['stats'])
     await b.runtime.dispose()
diff --git a/packages/client/ui-conversation/tests/chat-branch-tails.spec.tsx b/packages/client/ui-conversation/tests/chat-branch-tails.spec.tsx
index ef3f7400b6..9bc17bff67 100644
--- a/packages/client/ui-conversation/tests/chat-branch-tails.spec.tsx
+++ b/packages/client/ui-conversation/tests/chat-branch-tails.spec.tsx
@@ -27,7 +27,7 @@ afterEach(() => {
 const t: MessageItemProps['t'] = makeTranslate(zh, commonZh)
 
 describe('MessageItem arms', () => {
-  it('user bubbles expose clock / copy / branch / edit; copy writes the text', () => {
+  it('user bubbles expose clock / copy / branch and no edit; copy writes the text', () => {
     const writeText = vi.fn().mockResolvedValue(undefined)
     Object.defineProperty(navigator, 'clipboard', {
       configurable: true,
@@ -47,7 +47,7 @@ describe('MessageItem arms', () => {
     expect(screen.getByText('14:24')).toBeTruthy()
     expect(screen.getByRole('button', { name: '复制' })).toBeTruthy()
     expect(screen.getByRole('button', { name: '在新对话中分支' })).toBeTruthy()
-    expect(screen.getByRole('button', { name: '编辑' })).toBeTruthy()
+    expect(screen.queryByRole('button', { name: '编辑' })).toBeNull()
     fireEvent.click(screen.getByRole('button', { name: '复制' }))
     expect(writeText).toHaveBeenCalledWith('hello bubble')
   })
@@ -445,14 +445,19 @@ describe('small branch tails', () => {
   })
 
   it('StatsLine omits the cache-hit segment when no input accounting exists at all', () => {
-    // cacheHitPct is null only when input+cacheRead are both zero (pure
-    // output accounting) — any input makes it a real 0%.
+    // Cache hit is null only when all three prompt buckets are zero (pure
+    // output accounting) — any billed input makes it a real 0%.
     const snap = {
       nodes: [{ kind: 'assistant', seq: 1, turn: 1, step: 1, blocks: [], usage: { outputTokens: 10 } }],
     }
     const source = { getSnapshot: () => snap, subscribe: () => () => {} }
     const view = render(
-      ,
+       key === 'tokenUsage'
+          ? { uncachedInputTokens: 0, outputTokens: 10, cacheReadTokens: 0, cacheWriteTokens: 0 }
+          : undefined}
+      />,
     )
     expect(view.container.textContent).toBe('1 turns · 1 steps|Input 0 tok · Output 10 tok')
   })
diff --git a/packages/client/ui-conversation/tests/chat-stats-bash-sample.spec.tsx b/packages/client/ui-conversation/tests/chat-stats-bash-sample.spec.tsx
index 1ef54c6256..512ca2a86c 100644
--- a/packages/client/ui-conversation/tests/chat-stats-bash-sample.spec.tsx
+++ b/packages/client/ui-conversation/tests/chat-stats-bash-sample.spec.tsx
@@ -58,7 +58,7 @@ function makeSource(init?: Partial) {
 }
 
 describe('deriveStats', () => {
-  it('folds turns/steps/token split and cache hit percentage', () => {
+  it('counts turns and steps and never folds node usage into accounting', () => {
     const stats = deriveStats([
       assistant(1, 1, { inputTokens: 100, outputTokens: 50, cacheReadTokens: 900 }),
       assistant(2, 1, { inputTokens: 100, outputTokens: 50 }),
@@ -66,12 +66,12 @@ describe('deriveStats', () => {
     ])
     expect(stats.turns).toBe(2)
     expect(stats.steps).toBe(3)
-    expect(stats.inputTokens).toBe(1100)
-    expect(stats.outputTokens).toBe(100)
-    expect(stats.cacheHitPct).toBe(82)
+    // Window-scoped by design: the paged window is not an accounting source, so
+    // the fold exposes no token fields at all (billing rides the projection).
+    expect(Object.keys(stats).sort()).toEqual(['llmMs', 'steps', 'toolMs', 'turns'])
   })
 
-  it('cache hit stays null with no cache accounting; out-of-window tool results ignored', () => {
+  it('ignores tool results with no call time', () => {
     const tool: ToolResultNode = {
       kind: 'tool-result', seq: 5, time: 5_000, callId: 'c', call: null, callTime: null, content: [],
       isError: false, callView: null, resultView: null,
@@ -79,7 +79,6 @@ describe('deriveStats', () => {
     const stats = deriveStats([tool, assistant(1, 1)])
     expect(stats.steps).toBe(1)
     expect(stats.toolMs).toBe(0)
-    expect(stats.cacheHitPct).toBeNull()
   })
 
   it('sums LLM wall time from assistant timing and tool wall time from call/result pairs', () => {
@@ -116,22 +115,105 @@ describe('formatters', () => {
 })
 
 describe('StatsLine', () => {
-  function props(source: { getSnapshot(): ConversationSnapshot; subscribe(fn: () => void): () => void }): StatsLineProps {
-    return { useSession: bindSnapshotSelector(source) }
+  const USAGE = { uncachedInputTokens: 10, outputTokens: 5, cacheReadTokens: 90, cacheWriteTokens: 0 }
+
+  /** Stub the projection seat: a key-addressed table of whole values. */
+  function projections(values: Record): StatsLineProps['useProjection'] {
+    return (key: string) => values[key]
   }
 
-  it('renders the grouped stats row and hides with zero steps', () => {
-    const { source } = makeSource({
-      nodes: [assistant(1, 1, { inputTokens: 10, outputTokens: 5, cacheReadTokens: 90 })],
-    })
+  function props(
+    source: { getSnapshot(): ConversationSnapshot; subscribe(fn: () => void): () => void },
+    values: Record = { tokenUsage: USAGE },
+  ): StatsLineProps {
+    return { useSession: bindSnapshotSelector(source), useProjection: projections(values) }
+  }
+
+  it('renders the grouped stats row and hides a brand-new empty session', () => {
+    const { source } = makeSource({ nodes: [assistant(1, 1)] })
     const view = render()
-    // No timing on the fixture: the duration group drops out whole.
+    // No timing on the fixture: the duration group drops out whole. Tokens come
+    // from the projection, so paging the window cannot change them.
     expect(view.container.textContent).toBe('1 turns · 1 steps|Cache hit 90%|Input 100 tok · Output 5 tok')
     const empty = makeSource()
-    const emptyView = render()
+    const emptyView = render()
     expect(emptyView.container.textContent).toBe('')
   })
 
+  it('keeps durable token and context groups after the visible step window is empty', () => {
+    const { source } = makeSource()
+    const view = render()
+    expect(view.container.textContent)
+      .toBe('Context 25% of 128K|Cache hit 90%|Input 100 tok · Output 5 tok')
+  })
+
+  it('renders context occupancy only when the projection knows a capacity', () => {
+    const { source } = makeSource({ nodes: [assistant(1, 1)] })
+    const withCapacity = render()
+    expect(withCapacity.container.textContent).toContain('Context 25% of 128K')
+    // Pressure without capacity has no denominator: the group drops out.
+    const noCapacity = render()
+    expect(noCapacity.container.textContent).not.toContain('Context')
+    // Capacity arrives before usage in the log; no provider sample means there
+    // is no numerator yet, rather than a synthetic 0%.
+    const noPressure = render()
+    expect(noPressure.container.textContent).not.toContain('Context')
+  })
+
+  it('clamps occupancy at 100% when pressure exceeds the recorded capacity', () => {
+    // Capacity and pressure are independent last-wins fields, so a model switch
+    // can pair a smaller new window with the previous route's larger prompt.
+    const { source } = makeSource({ nodes: [assistant(1, 1)] })
+    const view = render()
+    expect(view.container.textContent).toContain('Context 100% of 128K')
+  })
+
+  it('drops every token group when no projection is composed', () => {
+    const { source } = makeSource({ nodes: [assistant(1, 1)] })
+    const view = render()
+    expect(view.container.textContent).toBe('1 turns · 1 steps')
+  })
+
+  it('omits cache hit when nothing was billed on the input side', () => {
+    const { source } = makeSource({ nodes: [assistant(1, 1)] })
+    const view = render()
+    expect(view.container.textContent).toBe('1 turns · 1 steps|Input 0 tok · Output 7 tok')
+  })
+
+  it('includes cache writes in billed input and the cache-hit denominator', () => {
+    const { source } = makeSource({ nodes: [assistant(1, 1)] })
+    const view = render()
+    expect(view.container.textContent)
+      .toBe('1 turns · 1 steps|Cache hit 45%|Input 200 tok · Output 7 tok')
+  })
+
   it('renders ZERO times during streaming chunk frames (RFC hard acceptance)', () => {
     const { set, source } = makeSource({ nodes: [assistant(1, 1)] })
     let renders = 0
diff --git a/packages/client/ui-conversation/tests/gate-branch-tails.spec.tsx b/packages/client/ui-conversation/tests/gate-branch-tails.spec.tsx
index 1d13c7380a..873d2cfbc9 100644
--- a/packages/client/ui-conversation/tests/gate-branch-tails.spec.tsx
+++ b/packages/client/ui-conversation/tests/gate-branch-tails.spec.tsx
@@ -43,20 +43,24 @@ describe('render branch tails', () => {
     expect(view.container.querySelector('[data-state="ok"]')).not.toBeNull()
   })
 
-  it('StatsLine skips usage-less nodes and defaults each absent counter to zero', () => {
+  it('StatsLine counts window nodes but drops every token group without a projection', () => {
+    // Node `usage` is deliberately ignored: billing rides the durable
+    // tokenUsage projection, so an absent projection leaves counts only.
     const snap = {
       nodes: [
         { kind: 'assistant', seq: 1, turn: 1, step: 1, blocks: [] },
         { kind: 'assistant', seq: 2, turn: 1, step: 2, blocks: [], usage: { inputTokens: 4, outputTokens: 6 } },
-        // outputTokens absent: the tokens sum's ?? 0 arm for output.
         { kind: 'assistant', seq: 3, turn: 2, step: 1, blocks: [], usage: { inputTokens: 5 } },
       ],
     }
     const source = { getSnapshot: () => snap, subscribe: () => () => {} }
     const view = render(
-      } />,
+      }
+        useProjection={() => undefined}
+      />,
     )
-    expect(view.container.textContent).toBe('2 turns · 3 steps|Cache hit 0%|Input 9 tok · Output 6 tok')
+    expect(view.container.textContent).toBe('2 turns · 3 steps')
   })
 
   it('AssistantMarkdown reasoning as the streaming tail renders the running ring', () => {
diff --git a/packages/client/ui-conversation/tests/read-card.spec.tsx b/packages/client/ui-conversation/tests/read-card.spec.tsx
new file mode 100644
index 0000000000..11354413b7
--- /dev/null
+++ b/packages/client/ui-conversation/tests/read-card.spec.tsx
@@ -0,0 +1,293 @@
+// @vitest-environment jsdom
+// The read render intent on the web side: the pure readCardModel derivation
+// over the settled result view, and both conversation render sites that consume
+// it — the chat tool row (the keyed ReadRow and the GenericToolCard fallback,
+// each with the read card resident under the summary) and the details panel's
+// Output section. Also pins the keyed 'read' toolview registration.
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { cleanup, fireEvent, render } from '@testing-library/react'
+import { Context } from 'cordis'
+import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-web-react'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
+import type {
+  ConversationSnapshot, RunningToolCall, SessionId, SessionListState, ToolResultNode, WorkspaceListState,
+} from '@deepseek-ai/dsh-client-runtime/client'
+import type { ToolResultView } from '@deepseek-ai/dsh-client-connection/client'
+import type { SelectionTarget, ToolRowProps } from '@deepseek-ai/dsh-client-ui-conversation/client'
+import { CHAT_READ_MAX_LINES, readCardModel } from '../src/client/contract/read-card-model.ts'
+import { createChatStore } from '../src/client/stores.ts'
+import { GenericToolCard, type GenericToolCardProps } from '../src/client/chat/GenericToolCard.tsx'
+import { zh } from '../src/client/locales.ts'
+import { DetailsPanel } from '../src/client/skeleton/DetailsPanel.tsx'
+import { ReadRow, readToolview } from '../src/client/toolviews/read-row.tsx'
+
+afterEach(cleanup)
+
+const SID = 's1' as SessionId
+
+/** The chat-view locale seat: this package's namespace over the common fallback. */
+const t: GenericToolCardProps['t'] = makeTranslate(zh, commonZh)
+
+// The read tool's real schema key is `file_path`; the top-level read samples
+// use it so the row exercises a production-shaped call. `web_fetch` (below) has
+// its own schema whose key is not `file_path`, so it keeps a `url`-less `path`.
+const ARGS = '{"file_path":"src/a.ts","offset":41}'
+const WEB_FETCH_ARGS = '{"path":"src/a.ts","offset":41}'
+
+/** The read block's rendered content cells, one string per row (highlighting
+ *  breaks a line across token spans, so match on the row's textContent). */
+function contentTexts(container: HTMLElement): string[] {
+  return [...container.querySelectorAll('[data-read] [class^="_content_"]')].map(cell => cell.textContent ?? '')
+}
+
+/** Three windowed lines starting at file line 41 (a read past an offset). */
+const sampleLines = [
+  { number: 41, text: 'export const a = 1' },
+  { number: 42, text: 'export const b = 2' },
+  { number: 43, text: 'export const c = 3' },
+]
+
+/** The read tool's own result view for a settled file read. */
+const resultRead = (over?: Partial>): ToolResultView => ({
+  card: 'read', path: 'src/a.ts', offset: 41, lines: sampleLines, totalLines: 180, lang: 'ts', ...over,
+})
+
+const running = (over?: Partial): RunningToolCall => ({
+  callId: 'c1', name: 'read', argsRaw: ARGS,
+  turn: 1, step: 1, time: 1_000, callView: { card: 'generic', title: 'Read src/a.ts', kind: 'read' }, ...over,
+})
+
+const settled = (over?: Partial): ToolResultNode => ({
+  kind: 'tool-result', seq: 10, time: 2_000, callId: 'c1',
+  call: { name: 'read', argsRaw: ARGS },
+  callTime: 1_000,
+  content: [{ type: 'text', text: '41: export const a = 1' }], isError: false,
+  callView: { card: 'generic', title: 'Read src/a.ts', kind: 'read' }, resultView: resultRead(), ...over,
+})
+
+describe('readCardModel', () => {
+  it('derives the card from a settled read result view', () => {
+    expect(readCardModel(settled())).toEqual({
+      label: 'src/a.ts', lines: sampleLines, totalLines: 180, lang: 'ts',
+    })
+  })
+
+  it('copies the lines into the primitive shape rather than aliasing the frozen slice', () => {
+    const model = readCardModel(settled())
+    expect(model?.lines).toEqual(sampleLines)
+    expect(model?.lines).not.toBe(sampleLines)
+    expect(model?.lines[0]).not.toBe(sampleLines[0])
+  })
+
+  it('takes the result view\'s replacement title over the relativized path', () => {
+    // The presentation contract defines a result title as REPLACING the pending
+    // one, so a tool that supplies a label wins over the path here.
+    expect(readCardModel(settled({ resultView: resultRead({ title: 'Read (head) src/a.ts' }) }))?.label)
+      .toBe('Read (head) src/a.ts')
+  })
+
+  it('relativizes a workspace-rooted path label, and leaves others as authored', () => {
+    // A workspace-rooted absolute path shows its short form.
+    expect(readCardModel(settled({ resultView: resultRead({ path: '/w/app/src/a.ts' }) }), '/w/app')?.label)
+      .toBe('src/a.ts')
+    // A path outside the workspace stays as authored.
+    expect(readCardModel(settled({ resultView: resultRead({ path: '/srv/other.ts' }) }), '/w/app')?.label)
+      .toBe('/srv/other.ts')
+    // With no session cwd there is nothing to relativize against.
+    expect(readCardModel(settled({ resultView: resultRead({ path: '/w/app/src/a.ts' }) }))?.label)
+      .toBe('/w/app/src/a.ts')
+  })
+
+  it('carries an omitted language through as undefined', () => {
+    const noLang = resultRead()
+    delete (noLang as { lang?: string }).lang
+    expect(readCardModel(settled({ resultView: noLang }))?.lang).toBeUndefined()
+  })
+
+  it('returns null for a running read: the read intent is result-side only', () => {
+    // A read carries no content until execute returns, so the pending call is a
+    // generic card and there is no read card to draw yet.
+    expect(readCardModel(running())).toBeNull()
+  })
+
+  it('returns null for every non-read settled call: no view, generic view, unknown card', () => {
+    expect(readCardModel(settled({ resultView: null }))).toBeNull()
+    expect(readCardModel(settled({ resultView: { card: 'generic' } }))).toBeNull()
+    // A card tag this UI version does not know arrives over the wire; the
+    // documented generic-card default takes it, not a crash.
+    const future = { card: 'chart' } as unknown as ToolResultView
+    expect(readCardModel(settled({ resultView: future }))).toBeNull()
+  })
+})
+
+describe('GenericToolCard read body', () => {
+  const ownerProps = (block: RunningToolCall | ToolResultNode): GenericToolCardProps => ({
+    callId: 'c1', toolName: 'web_fetch', block, openFile: vi.fn(), t,
+  })
+
+  it('renders the read card resident under the summary, capped tighter than the panel', () => {
+    expect(CHAT_READ_MAX_LINES).toBeLessThan(16)
+    // web_fetch lands on the read variant without its own keyed row, so the
+    // fallback card owns the resident read block.
+    const view = render()
+    expect(view.container.querySelector('[data-read]')).not.toBeNull()
+    expect(contentTexts(view.container)).toContain('export const a = 1')
+    // The gutter keeps the file's own line numbers.
+    expect(view.getByText('41')).toBeTruthy()
+  })
+
+  it('a non-read tool renders the bare row with no read card', () => {
+    const view = render()
+    expect(view.container.querySelector('[data-read]')).toBeNull()
+  })
+
+  it('a running read renders the summary row alone (no result view yet)', () => {
+    const view = render()
+    expect(view.container.querySelector('[data-read]')).toBeNull()
+  })
+})
+
+describe('ReadRow keyed toolview', () => {
+  const list = () => createSnapshotStore({
+    ids: [SID],
+    byId: { [SID]: { id: SID, displayTitle: 'r', running: false, blank: false, waitingApproval: false, updatedAt: 0, cwd: '/w/app' } },
+    current: SID,
+    phase: 'ready',
+  })
+
+  const rowProps = (block: RunningToolCall | ToolResultNode): ToolRowProps => ({
+    callId: 'c1', toolName: 'read', block, openFile: vi.fn(),
+    sessionId: SID, useSessions: bindSnapshotSelector(list()),
+  } as unknown as ToolRowProps)
+
+  it('renders the file path summary and the resident read card', () => {
+    const view = render()
+    expect(view.getByText('Read')).toBeTruthy()
+    // The path appears twice: the row summary link and the card's banner label.
+    expect(view.getAllByText('src/a.ts').length).toBe(2)
+    expect(view.container.querySelector('[data-read]')).not.toBeNull()
+    expect(contentTexts(view.container)).toContain('export const a = 1')
+    expect(view.getByText('显示 3 / 180 行')).toBeTruthy()
+  })
+
+  it('the path summary opens the file through the host', () => {
+    const openFile = vi.fn()
+    const view = render()
+    fireEvent.click(view.getByRole('button', { name: 'src/a.ts' }))
+    // The row derives the file path from args; the chat view resolves it against
+    // the cwd before this callback opens it, so the arg path is what arrives.
+    expect(openFile).toHaveBeenCalledWith('src/a.ts')
+  })
+
+  it('a running read renders the summary row alone, and its state', () => {
+    const view = render()
+    expect(view.container.querySelector('[data-variant="read"]')?.getAttribute('data-state')).toBe('running')
+    expect(view.container.querySelector('[data-read]')).toBeNull()
+  })
+
+  it('an error read result shows the error state and no read card', () => {
+    const view = render()
+    expect(view.container.querySelector('[data-variant="read"]')?.getAttribute('data-state')).toBe('error')
+    expect(view.container.querySelector('[data-read]')).toBeNull()
+  })
+
+  it('an interrupted read shows the stopped state', () => {
+    const view = render()
+    expect(view.container.querySelector('[data-variant="read"]')?.getAttribute('data-state')).toBe('stopped')
+  })
+
+  it('registers under the read key of the keyed toolview slot', () => {
+    const registered: { name: unknown; key?: unknown }[] = []
+    const ctx = { slots: { register: (options: { name: unknown; key?: unknown }) => { registered.push(options) } } } as unknown as Context
+    readToolview.apply(ctx)
+    expect(registered).toEqual([{ name: 'conversation.chat.toolview', key: 'read' }])
+    expect(readToolview.inject).toContain('conversation')
+  })
+})
+
+describe('DetailsPanel Output section (read)', () => {
+  function mount(snapshot: ConversationSnapshot, selection: SelectionTarget | null, cwd?: string) {
+    localStorage.clear()
+    const chat = createChatStore().create()
+    if (selection !== null) chat.actions.select(selection)
+    const sessions = createSnapshotStore(cwd === undefined
+      ? { ids: [], byId: {}, current: undefined, phase: 'ready' }
+      : {
+        ids: [SID],
+        byId: { [SID]: { id: SID, displayTitle: 'r', running: false, blank: false, waitingApproval: false, updatedAt: 0, cwd } },
+        current: SID,
+        phase: 'ready',
+      })
+    const workspaces = createSnapshotStore({
+      items: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null,
+      baselinesReady: true, recentWorkspaceId: undefined,
+    })
+    return render(
+       snapshot, subscribe: () => () => {} })}
+        useSessions={bindSnapshotSelector(sessions)}
+        useWorkspaces={bindSnapshotSelector(workspaces)}
+        useInput={(() => { throw new Error('unused') })}
+        inputActions={{ setDraft: () => {}, submit: () => {} }}
+        useProjection={(() => undefined)}
+        useStore={bindSnapshotSelector(chat)}
+        actions={chat.actions}
+        closeDetails={vi.fn()}
+      />,
+    )
+  }
+
+  function snapshot(over: Partial = {}): ConversationSnapshot {
+    return {
+      sessionId: SID, nodes: [], partial: null, runningCalls: [], codeDispatches: new Map(),
+      pending: [], queue: [], running: false, composerPhase: 'active', removed: false,
+      openState: 'open', openError: null, hasMore: false, loadingOlder: false,
+      promptError: null, blank: false, lastAgentError: null, ...over,
+    }
+  }
+
+  const target: SelectionTarget = { turnSeq: 10, callId: 'c1', toolName: 'read' }
+
+  it('renders the read card at full height, keeping the JSON Input section', () => {
+    const long = Array.from({ length: 20 }, (_, i) => ({ number: i + 1, text: `row-${i}` }))
+    const view = mount(snapshot({
+      nodes: [settled({ resultView: resultRead({ lines: long, totalLines: 20 }) })],
+    }), target)
+    expect(view.getByText(/"file_path"/)).toBeTruthy()
+    expect(view.container.querySelector('[data-read]')).not.toBeNull()
+    // The panel takes the primitive's own default cap (16), not the row's.
+    expect(view.getByText(`… 其余 ${20 - 16} 行`)).toBeTruthy()
+    expect(contentTexts(view.container)).toContain('row-0')
+  })
+
+  it('a non-read result keeps the flattened pre form', () => {
+    const view = mount(snapshot({
+      nodes: [settled({
+        callView: null, resultView: null,
+        content: [{ type: 'text', text: 'plain result' }],
+      })],
+    }), target)
+    expect(view.container.querySelector('[data-read]')).toBeNull()
+    expect(view.getByText('输出').closest('section')?.querySelector('pre')?.textContent).toBe('plain result')
+  })
+
+  it('a running read keeps the 运行中… placeholder (no result view)', () => {
+    const view = mount(snapshot({ runningCalls: [running()] }), target)
+    expect(view.getByText('运行中…')).toBeTruthy()
+    expect(view.container.querySelector('[data-read]')).toBeNull()
+  })
+})
diff --git a/packages/client/ui-conversation/tests/search-card.spec.tsx b/packages/client/ui-conversation/tests/search-card.spec.tsx
new file mode 100644
index 0000000000..4856a7ff1e
--- /dev/null
+++ b/packages/client/ui-conversation/tests/search-card.spec.tsx
@@ -0,0 +1,409 @@
+// @vitest-environment jsdom
+// The search render intent on the web side: the pure searchCardModel derivation
+// over resultView, and the conversation render sites that consume it — the chat
+// tool row (GenericToolCard's expand-gated body and SearchRow's resident card)
+// and the details panel's Output section. The keyed registration under both grep
+// and glob is pinned here too.
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { cleanup, fireEvent, render } from '@testing-library/react'
+import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-web-react'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import type {
+  ConversationSnapshot, RunningToolCall, SessionId, SessionListState, ToolResultNode, WorkspaceListState,
+} from '@deepseek-ai/dsh-client-runtime/client'
+import type { ToolResultView } from '@deepseek-ai/dsh-client-connection/client'
+import type { SelectionTarget, ToolRowProps } from '@deepseek-ai/dsh-client-ui-conversation/client'
+import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
+import { CHAT_SEARCH_MAX_LINES, searchCardModel } from '../src/client/contract/search-card-model.ts'
+import { zh } from '../src/client/locales.ts'
+import { createChatStore } from '../src/client/stores.ts'
+import { GenericToolCard, type GenericToolCardProps } from '../src/client/chat/GenericToolCard.tsx'
+import { DetailsPanel } from '../src/client/skeleton/DetailsPanel.tsx'
+import { SearchRow, searchToolview } from '../src/client/toolviews/search-row.tsx'
+
+afterEach(cleanup)
+
+/** Conversation-locale translate stub for the render sites' `t` seat. */
+const t: GenericToolCardProps['t'] = makeTranslate(zh, commonZh)
+
+/** The rendered search card's kind attribute, so a render site cannot silently drop it. */
+function searchKindOf(container: HTMLElement): string | null {
+  return container.querySelector('[data-search]')?.getAttribute('data-search') ?? null
+}
+
+/** The rendered result rows of the search card, one string per visible row. */
+function searchRows(container: HTMLElement): string[] {
+  return [...container.querySelectorAll('[data-search] [class^="_line_"]')].map(row => row.textContent ?? '')
+}
+
+const SID = 's1' as SessionId
+
+const GREP_ARGS = '{"pattern":"foo","path":"src"}'
+const GLOB_ARGS = '{"pattern":"**/*.ts","path":"src"}'
+
+/** A grep result view: matches grouped by file. */
+const resultMatches = (over?: Partial>): ToolResultView => ({
+  card: 'search', shape: 'matches',
+  files: [
+    { path: 'a.ts', matches: [{ lineNumber: 12, line: 'const foo = 1' }, { lineNumber: 40, line: 'return foo' }] },
+    { path: 'b.ts', matches: [{ lineNumber: 7, line: 'foo()' }] },
+  ],
+  truncated: false, total: 3, ...over,
+})
+
+/** A glob result view: a flat path list. */
+const resultPaths = (over?: Partial>): ToolResultView => ({
+  card: 'search', shape: 'paths', paths: ['src/a.ts', 'src/b.ts'], truncated: false, total: 2, ...over,
+})
+
+const runningGrep = (over?: Partial): RunningToolCall => ({
+  callId: 'c1', name: 'grep', argsRaw: GREP_ARGS,
+  turn: 1, step: 1, time: 1_000, callView: { card: 'generic', title: 'Grep foo', kind: 'search' }, ...over,
+})
+
+const settledGrep = (over?: Partial): ToolResultNode => ({
+  kind: 'tool-result', seq: 10, time: 2_000, callId: 'c1',
+  call: { name: 'grep', argsRaw: GREP_ARGS },
+  callTime: 1_000,
+  content: [{ type: 'text', text: 'a.ts\n  Line 12: const foo = 1' }], isError: false,
+  callView: { card: 'generic', title: 'Grep foo', kind: 'search' }, resultView: resultMatches(), ...over,
+})
+
+const settledGlob = (over?: Partial): ToolResultNode => ({
+  kind: 'tool-result', seq: 11, time: 2_000, callId: 'c2',
+  call: { name: 'glob', argsRaw: GLOB_ARGS },
+  callTime: 1_000,
+  content: [{ type: 'text', text: 'src/a.ts\nsrc/b.ts' }], isError: false,
+  callView: { card: 'generic', title: 'Glob **/*.ts', kind: 'search' }, resultView: resultPaths(), ...over,
+})
+
+describe('searchCardModel', () => {
+  it('derives a matches card from the grep result view', () => {
+    expect(searchCardModel(settledGrep())).toEqual({
+      title: undefined,
+      recovery: undefined,
+      card: {
+        kind: 'matches',
+        files: [
+          { path: 'a.ts', matches: [{ lineNumber: 12, line: 'const foo = 1' }, { lineNumber: 40, line: 'return foo' }] },
+          { path: 'b.ts', matches: [{ lineNumber: 7, line: 'foo()' }] },
+        ],
+        truncated: false, total: 3,
+      },
+    })
+  })
+
+  it('derives a paths card from the glob result view, carrying the truncation signal', () => {
+    // Empty block content isolates the truncation signal from the recovery arm.
+    expect(searchCardModel(settledGlob({ content: [], resultView: resultPaths({ truncated: true, total: 20 }) }))).toEqual({
+      title: undefined,
+      recovery: undefined,
+      card: { kind: 'paths', paths: ['src/a.ts', 'src/b.ts'], truncated: true, total: 20 },
+    })
+  })
+
+  it('carries the result view\'s replacement title when the presenter sets one', () => {
+    expect(searchCardModel(settledGrep({ resultView: resultMatches({ title: '3 matches' }) }))?.title).toBe('3 matches')
+    // Without one it is absent, so the row keeps its args-derived summary.
+    expect(searchCardModel(settledGrep())?.title).toBeUndefined()
+  })
+
+  it('returns null for every non-search call: running, no views, generic, terminal, unknown cards', () => {
+    // A search card is result-time only: a running call has no result view yet.
+    expect(searchCardModel(runningGrep())).toBeNull()
+    expect(searchCardModel(settledGrep({ callView: null, resultView: null }))).toBeNull()
+    // A generic result settles a search call as a generic card (grep/glob failure
+    // or a nested run_code dispatch), which keeps the generic path.
+    expect(searchCardModel(settledGrep({ resultView: { card: 'generic' } }))).toBeNull()
+    // A terminal result view is a different card entirely.
+    expect(searchCardModel(settledGrep({ resultView: { card: 'terminal', output: 'x' } }))).toBeNull()
+    // A card tag this UI version does not know arrives over the wire; the
+    // documented generic-card default takes it, not a crash.
+    const future = { card: 'chart' } as unknown as ToolResultView
+    expect(searchCardModel(settledGrep({ resultView: future }))).toBeNull()
+  })
+
+  it('returns null for a card:search view whose shape this version does not compile', () => {
+    // `shape` rides the same untrusted wire frame as `card`; a subtype this client
+    // does not know must fall to the generic path, never render as a paths card
+    // that would crash SearchBlock on an absent `paths`.
+    const futureShape = {
+      card: 'search', shape: 'future', truncated: false, total: 0,
+    } as unknown as ToolResultView
+    expect(searchCardModel(settledGrep({ resultView: futureShape }))).toBeNull()
+  })
+
+  it('returns null for a known shape whose structured shape is missing or malformed', () => {
+    // The host wire schema checks the `card`/`shape` strings but not the grouped
+    // shape, so a version mismatch could deliver shape:'matches' with no `files`
+    // (or shape:'paths' with no `paths`). Rendering that crashes SearchBlock at
+    // `.reduce`/`.map`; the derivation drops to the generic path instead.
+    const noFiles = { card: 'search', shape: 'matches', truncated: false, total: 0 } as unknown as ToolResultView
+    expect(searchCardModel(settledGrep({ resultView: noFiles }))).toBeNull()
+    const badFile = {
+      card: 'search', shape: 'matches', truncated: false, total: 1,
+      files: [{ path: 'a.ts', matches: [{ lineNumber: 'x', line: 1 }] }],
+    } as unknown as ToolResultView
+    expect(searchCardModel(settledGrep({ resultView: badFile }))).toBeNull()
+    const noPaths = { card: 'search', shape: 'paths', truncated: false, total: 0 } as unknown as ToolResultView
+    expect(searchCardModel(settledGlob({ resultView: noPaths }))).toBeNull()
+    const badPaths = {
+      card: 'search', shape: 'paths', truncated: false, total: 1, paths: [42],
+    } as unknown as ToolResultView
+    expect(searchCardModel(settledGlob({ resultView: badPaths }))).toBeNull()
+  })
+
+  it('surfaces the recovery text only when the result was capped', () => {
+    const recovery = 'a.ts\n  12: const foo = 1\n\n(Full grep result stored at: spill://grep-1. Read it to see every match.)'
+    // The recovery locator lives in the raw tool/result content (the view carries
+    // no text), surfaced only when the card capped the result.
+    const capped = searchCardModel(settledGrep({
+      content: [{ type: 'text', text: recovery }],
+      resultView: resultMatches({ truncated: true, total: 42 }),
+    }))
+    expect(capped?.recovery).toBe(recovery)
+    // Not capped: the card holds every match, so the raw content adds nothing and
+    // is dropped.
+    const whole = searchCardModel(settledGrep({
+      content: [{ type: 'text', text: recovery }],
+      resultView: resultMatches({ truncated: false }),
+    }))
+    expect(whole?.recovery).toBeUndefined()
+    // Capped but the block carries no text: nothing to surface.
+    const noText = searchCardModel(settledGrep({ content: [], resultView: resultMatches({ truncated: true, total: 42 }) }))
+    expect(noText?.recovery).toBeUndefined()
+  })
+})
+
+describe('chat row search body (GenericToolCard fallback)', () => {
+  const ownerProps = (block: RunningToolCall | ToolResultNode, toolName: string): GenericToolCardProps => ({
+    callId: 'c1', toolName, block, openFile: vi.fn(), t,
+  })
+  /** The whole summary row is the expand toggle (ToolRow's unified interaction). */
+  const toggleRow = (view: { container: HTMLElement }) => {
+    fireEvent.click(view.container.querySelector('[data-expandable]')!)
+  }
+
+  it('the expanded body is the grouped matches, capped tighter than the panel', () => {
+    expect(CHAT_SEARCH_MAX_LINES).toBeLessThan(16)
+    const view = render()
+    // Collapsed: the one-line summary row only, no card.
+    expect(view.queryByText(/const foo = 1/)).toBeNull()
+    toggleRow(view)
+    expect(searchRows(view.container)).toContain('12: const foo = 1')
+    expect(view.getByText('a.ts')).toBeTruthy()
+    expect(searchKindOf(view.container)).toBe('matches')
+    // The args JSON body the generic path would have shown is gone.
+    expect(view.queryByText(/"pattern"/)).toBeNull()
+  })
+
+  it('the glob fallback expands to the flat path card', () => {
+    const view = render()
+    toggleRow(view)
+    expect(view.getByText('src/a.ts')).toBeTruthy()
+    expect(searchKindOf(view.container)).toBe('paths')
+  })
+
+  it('a non-search result keeps the args-JSON text body', () => {
+    const view = render()
+    toggleRow(view)
+    expect(view.getByText(/"pattern"/)).toBeTruthy()
+    expect(searchKindOf(view.container)).toBeNull()
+  })
+
+  it('the expanded body shows the recovery footer below a capped card', () => {
+    const recovery = 'a.ts\n  12: const foo = 1\n\n(Full grep result stored at: spill://grep-1. Read it to see every match.)'
+    const view = render()
+    toggleRow(view)
+    expect(searchKindOf(view.container)).toBe('matches')
+    expect(view.getByText(/Full grep result stored at: spill:\/\/grep-1/)).toBeTruthy()
+  })
+})
+
+describe('SearchRow keyed card', () => {
+  const rowProps = (block: RunningToolCall | ToolResultNode, toolName: string): ToolRowProps => ({
+    callId: 'c1', toolName, block, openFile: vi.fn(), sessionId: SID,
+  } as unknown as ToolRowProps)
+
+  it('renders the grep card resident under the summary row, without an expand gesture', () => {
+    const view = render()
+    expect(view.getByText('Search')).toBeTruthy()
+    expect(searchRows(view.container)).toContain('12: const foo = 1')
+    expect(searchKindOf(view.container)).toBe('matches')
+    // The card's controls are the row's only interactions.
+    expect(view.getByText('复制')).toBeTruthy()
+  })
+
+  it('renders the glob path card resident', () => {
+    const view = render()
+    expect(view.getByText('src/a.ts')).toBeTruthy()
+    expect(searchKindOf(view.container)).toBe('paths')
+  })
+
+  it('agrees with the summary row about the run state', () => {
+    const runningView = render()
+    expect(runningView.container.querySelector('[data-variant="search"]')?.getAttribute('data-state')).toBe('running')
+    // No result view yet, so no resident card.
+    expect(searchKindOf(runningView.container)).toBeNull()
+    cleanup()
+    const errorView = render()
+    expect(errorView.container.querySelector('[data-variant="search"]')?.getAttribute('data-state')).toBe('error')
+  })
+
+  it('surfaces the result text when an errored search has no card', () => {
+    // grep/glob return no presentResult on error → no card; the row shows the
+    // model-facing error text instead of a bare red dot.
+    const view = render()
+    expect(searchKindOf(view.container)).toBeNull()
+    expect(view.getByText('grep: invalid regular expression')).toBeTruthy()
+  })
+
+  it('surfaces the result text for a settled non-error call with no card', () => {
+    // A successful nested run_code sub-dispatch (backend computes no
+    // presentationMeta, so resultView is null) or a legacy generic result settles
+    // with search === null and state ok. The keyed SearchRow owns the slot, so
+    // without the widened arm the content would be lost behind a bare summary.
+    const view = render()
+    expect(view.container.querySelector('[data-variant="search"]')?.getAttribute('data-state')).toBe('ok')
+    expect(searchKindOf(view.container)).toBeNull()
+    expect(view.getByText('nested run_code output line')).toBeTruthy()
+  })
+
+  it('renders the recovery footer below the card when the search was capped', () => {
+    const recovery = 'a.ts\n  12: const foo = 1\n\n(Full grep result stored at: spill://grep-1. Read it to see every match.)'
+    const view = render()
+    expect(searchKindOf(view.container)).toBe('matches')
+    expect(view.getByText(/Full grep result stored at: spill:\/\/grep-1/)).toBeTruthy()
+  })
+
+  it('shows no recovery footer for an uncapped search', () => {
+    const view = render()
+    expect(view.container.textContent).not.toMatch(/stored at/)
+  })
+
+  it('falls back to the error name/code when an errored result has no text block', () => {
+    const view = render()
+    expect(view.getByText('ToolError: timeout')).toBeTruthy()
+  })
+
+  it('shows the result view\'s replacement title instead of the args summary', () => {
+    const view = render()
+    expect(view.getByText('3 matches in 2 files')).toBeTruthy()
+  })
+
+  it('keeps the args-derived summary when the result view has no title', () => {
+    const view = render()
+    expect(view.getByText('foo')).toBeTruthy()
+  })
+
+  it('registers the one row component under both grep and glob keys', () => {
+    const registered: { key: unknown; component: unknown }[] = []
+    const ctx = {
+      slots: {
+        register: (options: { name: string; key: string }, component: unknown) => {
+          registered.push({ key: options.key, component })
+        },
+      },
+    } as never
+    searchToolview.apply(ctx)
+    expect(registered.map(r => r.key)).toEqual(['grep', 'glob'])
+    // One component, two keys.
+    expect(registered[0]!.component).toBe(SearchRow)
+    expect(registered[1]!.component).toBe(SearchRow)
+    expect(searchToolview.inject).toEqual(['slots', 'conversation'])
+  })
+})
+
+describe('DetailsPanel Output section (search)', () => {
+  function mount(snapshot: ConversationSnapshot, selection: SelectionTarget | null) {
+    localStorage.clear()
+    const chat = createChatStore().create()
+    if (selection !== null) chat.actions.select(selection)
+    const sessions = createSnapshotStore({ ids: [], byId: {}, current: undefined, phase: 'ready' })
+    const workspaces = createSnapshotStore({
+      items: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null,
+      baselinesReady: true, recentWorkspaceId: undefined,
+    })
+    return render(
+       snapshot, subscribe: () => () => {} })}
+        useSessions={bindSnapshotSelector(sessions)}
+        useWorkspaces={bindSnapshotSelector(workspaces)}
+        useInput={(() => { throw new Error('unused') })}
+        inputActions={{ setDraft: () => {}, submit: () => {} }}
+        useProjection={(() => undefined)}
+        useStore={bindSnapshotSelector(chat)}
+        actions={chat.actions}
+        closeDetails={vi.fn()}
+        t={t}
+      />,
+    )
+  }
+
+  function snapshot(over: Partial = {}): ConversationSnapshot {
+    return {
+      sessionId: SID, nodes: [], partial: null, runningCalls: [], codeDispatches: new Map(),
+      pending: [], queue: [], running: false, composerPhase: 'active', removed: false,
+      openState: 'open', openError: null, hasMore: false, loadingOlder: false,
+      promptError: null, blank: false, lastAgentError: null, ...over,
+    }
+  }
+
+  const grepTarget: SelectionTarget = { turnSeq: 10, callId: 'c1', toolName: 'grep' }
+  const globTarget: SelectionTarget = { turnSeq: 11, callId: 'c2', toolName: 'glob' }
+
+  it('renders the grep matches card at full height, keeping the JSON Input section', () => {
+    const view = mount(snapshot({ nodes: [settledGrep()] }), grepTarget)
+    expect(view.getByText(/"pattern"/)).toBeTruthy()
+    expect(searchRows(view.container)).toContain('12: const foo = 1')
+    expect(searchKindOf(view.container)).toBe('matches')
+  })
+
+  it('renders the glob path card', () => {
+    const view = mount(snapshot({ nodes: [settledGlob()] }), globTarget)
+    expect(view.getByText('src/a.ts')).toBeTruthy()
+    expect(searchKindOf(view.container)).toBe('paths')
+  })
+
+  it('renders the recovery footer below the card for a capped search', () => {
+    const recovery = 'src/a.ts\nsrc/b.ts\n\n(Showing 2 of 23 paths. Full sorted result stored at: spill://glob-7.)'
+    const view = mount(snapshot({
+      nodes: [settledGlob({ content: [{ type: 'text', text: recovery }], resultView: resultPaths({ truncated: true, total: 23 }) })],
+    }), globTarget)
+    expect(searchKindOf(view.container)).toBe('paths')
+    expect(view.getByText(/Full sorted result stored at: spill:\/\/glob-7/)).toBeTruthy()
+  })
+
+  it('a non-search result keeps the flattened pre form', () => {
+    const view = mount(snapshot({
+      nodes: [settledGrep({ callView: null, resultView: null })],
+    }), grepTarget)
+    expect(searchKindOf(view.container)).toBeNull()
+    const output = view.getByText('输出').closest('section')
+    expect(output?.querySelector('pre')?.textContent).toContain('const foo = 1')
+  })
+})
diff --git a/packages/client/ui-conversation/tsconfig.json b/packages/client/ui-conversation/tsconfig.json
index 1aa28c9c62..04b265bdd5 100644
--- a/packages/client/ui-conversation/tsconfig.json
+++ b/packages/client/ui-conversation/tsconfig.json
@@ -26,6 +26,9 @@
     {
       "path": "../../session-projection/session-projection"
     },
+    {
+      "path": "../../llm/token-meter"
+    },
     {
       "path": "../../plan/plan-mode"
     },
diff --git a/packages/client/ui-models/package.json b/packages/client/ui-models/package.json
index a649e1308f..025cc4c440 100644
--- a/packages/client/ui-models/package.json
+++ b/packages/client/ui-models/package.json
@@ -51,6 +51,7 @@
     "@deepseek-ai/dsh-client-locale": "workspace:^",
     "@deepseek-ai/dsh-client-runtime": "workspace:^",
     "@deepseek-ai/dsh-client-schema-form": "workspace:^",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:^",
     "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
     "@deepseek-ai/dsh-client-ui-settings": "workspace:^",
     "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
diff --git a/packages/client/ui-models/tests/apply.spec.ts b/packages/client/ui-models/tests/apply.spec.ts
index 6c64a93058..1f44cb487c 100644
--- a/packages/client/ui-models/tests/apply.spec.ts
+++ b/packages/client/ui-models/tests/apply.spec.ts
@@ -4,10 +4,15 @@ import { describe, expect, it, vi } from 'vitest'
 import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
+import { usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { apply, inject, refreshIfLoaded } from '@deepseek-ai/dsh-client-ui-models/client'
 import { ModelsSection } from '../src/client/ModelsSection.tsx'
 import { DeepSeekOnboardingDialog } from '../src/client/DeepSeekOnboardingDialog.tsx'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 async function bench() {
   const ctx = new Context()
   await ctx.plugin(SlotsService).await()
diff --git a/packages/client/ui-primitives/README.i18n.yaml b/packages/client/ui-primitives/README.i18n.yaml
index d55fe45007..af576fed26 100644
--- a/packages/client/ui-primitives/README.i18n.yaml
+++ b/packages/client/ui-primitives/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-primitives/README.md
-README.md: 58be01d56a85c66a144df3f8054840961e987403
-README.zh.md: 2efbec77e64d664553e93b5a8f8dcd2ec7fce49e
+README.md: 6430a789c15634538a38d6581df50a489522db55
+README.zh.md: 78249612cce3148fcececded40c529682450460a
diff --git a/packages/client/ui-primitives/README.md b/packages/client/ui-primitives/README.md
index 58be01d56a..6430a789c1 100644
--- a/packages/client/ui-primitives/README.md
+++ b/packages/client/ui-primitives/README.md
@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-Pure React atoms (zero cordis): StateDot, ic_ds_* icons, Button/Pill/Menu/Modal/Input, the markdown family (MessageText/MarkdownText/JsonBlock), the read-only JsonTree inspector, the `useAnchoredMaxHeight` hook that clamps a bottom-anchored overlay to the viewport space above its anchor (re-measured on resize, scroll, and a caller-supplied dependency), TerminalBlock, DiffBlock, and WebBlock. Contract: api-contracts v3 §8.
+Pure React atoms (zero cordis): StateDot, ic_ds_* icons, Button/Pill/Menu/Modal/Input, the markdown family (MessageText/MarkdownText/JsonBlock), the read-only JsonTree inspector, the `useAnchoredMaxHeight` hook that clamps a bottom-anchored overlay to the viewport space above its anchor (re-measured on resize, scroll, and a caller-supplied dependency), TerminalBlock, SearchBlock, DiffBlock, and WebBlock. Contract: api-contracts v3 §8.
 
 ## Markdown rendering
 
@@ -12,6 +12,10 @@ Pure React atoms (zero cordis): StateDot, ic_ds_* icons, Button/Pill/Menu/Modal/
 
 `TerminalBlock` renders a shell command as a terminal surface: one prompt row per line of the command (the shortened `cwd` label on the first row only, since the view knows one working directory and a `cd` moves later lines elsewhere, then that line), the command's output, a status pill for a non-zero exit code or a terminating signal, and a copy control that writes the raw `output` prop. A run-state `StateDot` marks the call once, on the first row, out of flow in a gutter the card reserves as its own left padding, so the dot sits inside the card box yet left of the prompt text. It reaches three of `StateDot`'s states — the chase while `running`, red for the same exit status that renders the pill, green otherwise — so a card states whether its command is still running rather than leaving that to be inferred from the presence of output; it carries one visually hidden text label because `StateDot` is `aria-hidden`. One dot regardless of line count is deliberate: the exit status is the whole call's, so a dot per line would claim a per-line outcome the view does not carry. Command text is `white-space: pre`, so repeated spaces, tabs, and an indented continuation render verbatim while the row stays single-line and ellipsizes. ANSI escape sequences are parsed with the `anser` runtime dependency into React spans; cursor movements replay into a per-line column buffer before inert controls are stripped, since carriage return and backspace only MOVE the cursor: `100%` + CR + `OK` alone shows `OK0%`, while the `\x1b[K` a spinner writes with its redraw erases the tail so `100%\r\x1b[KOK` shows `OK`. Erase-in-line is honored in all three parameter forms, the cursor advances by terminal columns (8-column tab stops, two for emoji and CJK, none for a combining mark), and SGR state is normalized per cell as a terminal stores it, threading across lines and closing at the state the line ended in; basic-16 foreground colors map onto `--dsw-*` tokens, while 256-palette and truecolor values pass through as literal rgb. Output keeps `white-space: pre` with horizontal scrolling, so column-aligned output holds its alignment instead of soft-wrapping, and collapses to a head slice plus a tail slice past `maxLines` (default 16, the TUI transcript's split arithmetic) behind an expand button. Rationale: [the web terminal card note](../../../.agents/notes/implemented/feature/2026-07-28-web-terminal-card.md).
 
+## Search results
+
+`SearchBlock` renders a completed search, one component for both kinds (discriminated by `kind`). A `matches` (grep) shows each file as a bold path header with its `lineNumber: line` rows, the per-file group collapsible; a `paths` (glob) shows a flat path list. Both flatten to one row list the height cap slices head/tail over (default 16, the TerminalBlock split arithmetic), and neither soft-wraps — a long match line or path scrolls horizontally instead of folding. The banner summary folds the pre-cap total in when the tool capped the result (`显示 X / 共 N 处匹配 · K 个文件` for grep, `显示 X / 共 N 个路径` for glob), so the card never presents a capped result as complete; a copy control writes the whole structured result regardless of the cap or which groups are collapsed. Geometry mirrors CodeBlock/TerminalBlock. Rationale: [the web search card note](../../../.agents/notes/implemented/feature/2026-07-30-web-search-card.md).
+
 ## Diff rendering
 
 `DiffBlock` renders a file mutation as an inline diff surface: one bold path header per file, the removed lines (`- `, error token) above the added lines (`+ `, success token), a `⋯` gap before a same-file second hunk, and a dim `└ +A -R · N file(s)` footer. Lines are `white-space: pre` with horizontal scrolling, so a source line holds its indentation instead of soft-wrapping, and the body collapses to a head slice plus a tail slice past `maxLines` (default 16, `TerminalBlock`'s split arithmetic) behind an expand button. A create (`oldText: null`) has no removed side. The copy control writes the prefixed diff text (path headers, `- `/`+ ` lines, the gap) so a multi-file copy stays attributable, and floats in the top-right corner rather than on a banner row of its own. Geometry mirrors `CodeBlock`/`TerminalBlock`. The `+`/`-` block form mirrors the TUI transcript's diff card so a diff reads the same across front ends. Rationale: [the web diff card note](../../../.agents/notes/implemented/feature/2026-07-30-web-diff-card.md).
diff --git a/packages/client/ui-primitives/README.zh.md b/packages/client/ui-primitives/README.zh.md
index 2efbec77e6..78249612cc 100644
--- a/packages/client/ui-primitives/README.zh.md
+++ b/packages/client/ui-primitives/README.zh.md
@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-纯 React 原子组件（零 cordis）：StateDot、ic_ds_* 图标、Button/Pill/Menu/Modal/Input、markdown 家族（MessageText/MarkdownText/JsonBlock）、只读 JsonTree 检查器、`useAnchoredMaxHeight` hook（把底部锚定的浮层高度收敛到锚点上方的视口空间，并在 resize、scroll 与调用方提供的依赖变化时重新测量）、TerminalBlock、DiffBlock，以及 WebBlock。契约：api-contracts v3 §8。
+纯 React 原子组件（零 cordis）：StateDot、ic_ds_* 图标、Button/Pill/Menu/Modal/Input、markdown 家族（MessageText/MarkdownText/JsonBlock）、只读 JsonTree 检查器、`useAnchoredMaxHeight` hook（把底部锚定的浮层高度收敛到锚点上方的视口空间，并在 resize、scroll 与调用方提供的依赖变化时重新测量）、TerminalBlock、SearchBlock、DiffBlock，以及 WebBlock。契约：api-contracts v3 §8。
 
 ## Markdown 渲染
 
@@ -11,6 +11,10 @@
 
 `TerminalBlock` 将一条 shell 命令渲染为终端表层：命令的每一行各占一个提示行（缩短后的 `cwd` 标签只出现在第一行，因为视图只知道一个工作目录，而一个 `cd` 就会让后面的行去到别处，标签之后是该行）、命令输出、非零退出码或终止信号对应的状态胶囊，以及写入原始 `output` prop 的复制控件。一枚运行状态 `StateDot` 为整次调用标记一次，位于第一行，以脱离文档流的方式落在卡片以自身左内边距预留的落区中，因此它位于卡片盒之内、提示文字之左。它用到 `StateDot` 的三种状态——`running` 期间为追逐动画，与渲染状态胶囊相同的退出状态为红色，其余为绿色——因此卡片直接陈述其命令是否仍在运行，而不是让人从有无输出中推断；由于 `StateDot` 是 `aria-hidden`，它携带一处视觉隐藏的文本标签。无论多少行都只有一枚状态点是有意为之：退出状态属于整次调用，因此每行一枚就会声称一个视图并不携带的逐行结果。命令文本使用 `white-space: pre`，因此重复空格、制表符与缩进续行都原样呈现，同时该行仍保持单行并以省略号截断。ANSI 转义序列通过运行时依赖 `anser` 解析为 React span；光标移动在剥除无显示意义控制符之前先重放进逐行的列缓冲，因为回车与退格**只移动**光标：单是 `100%` 加回车再加 `OK` 显示为 `OK0%`，而 spinner 随重绘写出的 `\x1b[K` 会擦掉尾巴，因此 `100%\r\x1b[KOK` 显示为 `OK`。行内擦除的三种参数形式都被遵循，光标按终端列推进（8 列制表位；emoji 与 CJK 占两列；组合标记不占列），SGR 状态按单元格归一化存储，与终端一致，并跨行延续、在行结束时的状态处收束；基础 16 色前景色映射到 `--dsw-*` token，而 256 色板与真彩色值按字面 rgb 透传。输出保持 `white-space: pre` 并支持横向滚动，因此按列对齐的输出保留其对齐而不会软换行；超过 `maxLines`（默认 16，与 TUI 转录相同的切分算法）时折叠为头部切片加尾部切片，由展开按钮控制。原理：[Web 终端卡片笔记](../../../.agents/notes/implemented/feature/2026-07-28-web-terminal-card.md)。
 
+## 搜索结果
+
+`SearchBlock` 渲染一次已完成的搜索,一个组件绘制两种 kind(由 `kind` 判别)。`matches`(grep)把每个文件渲染为粗体路径头加其 `lineNumber: line` 行,每个文件组可折叠;`paths`(glob)渲染扁平路径列表。两者都摊平成一个行列表,由高度上限做头/尾切片(默认 16,与 TerminalBlock 相同的切分算法),且都不软换行——长匹配行或路径横向滚动而非折行。当工具截断结果时,banner 摘要把截断前总数折入(grep 为 `显示 X / 共 N 处匹配 · K 个文件`,glob 为 `显示 X / 共 N 个路径`),使卡片绝不把截断结果呈现为完整;复制控件写入完整结构化结果,无论是否触及上限或哪些组被折叠。几何镜像 CodeBlock/TerminalBlock。原理:[Web 搜索卡片笔记](../../../.agents/notes/implemented/feature/2026-07-30-web-search-card.md)。
+
 ## Diff 渲染
 
 `DiffBlock` 将一次文件改动渲染为内联 diff 表层：每个文件一个粗体路径头、删除行（`- `，error token）在新增行（`+ `，success token）之上、同文件第二个 hunk 前一个 `⋯` gap，以及暗色 `└ +A -R · N file(s)` 页脚。各行使用 `white-space: pre` 并横向滚动，因此源码行保留其缩进而不软换行；超过 `maxLines`（默认 16，与 `TerminalBlock` 相同的切分算法）时折叠为头部切片加尾部切片，由展开按钮控制。新建（`oldText: null`）没有删除侧。复制控件写入带前缀的 diff 文本（路径头、`- `/`+ ` 行、gap），使多文件复制保持可归属，并浮在右上角而非占据自己的 banner 行。几何镜像 `CodeBlock`/`TerminalBlock`。`+`/`-` 块形式镜像 TUI 转录的 diff 卡片，使 diff 在两个前端读起来一致。原理：[Web diff 卡片笔记](../../../.agents/notes/implemented/feature/2026-07-30-web-diff-card.md)。
diff --git a/packages/client/ui-primitives/src/ReadBlock.module.css b/packages/client/ui-primitives/src/ReadBlock.module.css
new file mode 100644
index 0000000000..a18afe6152
--- /dev/null
+++ b/packages/client/ui-primitives/src/ReadBlock.module.css
@@ -0,0 +1,117 @@
+/* Geometry mirrors CodeBlock (12px radius, code-block surface + banner row,
+   markdown code-block font) so a read card and a fenced code block read as one
+   family. Content keeps `white-space: pre` and scrolls horizontally rather than
+   folding, because a source line's indentation is part of what a reader is
+   reading. */
+
+.block {
+  --dsl-read-radius: 12px;
+  --dsl-read-line-height: 22px;
+  /* Fixed-width gutter column for the line numbers, so the content edge stays
+     put down the whole window regardless of how wide the numbers grow. */
+  --dsl-read-gutter: 48px;
+
+  position: relative;
+  margin: 16px 0;
+  color: var(--dsw-alias-label-primary);
+  background: var(--dsw-alias-markdown-code-block);
+  border-radius: var(--dsl-read-radius);
+}
+
+.banner {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 12px;
+  padding: 9px 14px;
+  background: var(--dsw-alias-markdown-code-block-banner);
+  border-top-left-radius: var(--dsl-read-radius);
+  border-top-right-radius: var(--dsl-read-radius);
+}
+
+.label {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  color: var(--dsw-alias-label-primary);
+  font-family: var(--ds-font-family-code);
+  font-size: 12px;
+  line-height: 18px;
+}
+
+.action {
+  display: flex;
+  align-items: center;
+  flex-shrink: 0;
+  gap: 12px;
+}
+
+.count {
+  color: var(--dsw-alias-label-tertiary);
+  font: var(--dsw-font-xs-13);
+}
+
+.lang {
+  color: var(--dsw-alias-label-tertiary);
+  font-family: var(--ds-font-family-code);
+  font-size: 12px;
+  line-height: 18px;
+}
+
+.copyButton {
+  background-color: transparent;
+  border: none;
+  padding: 0;
+  margin: 0;
+  color: var(--dsw-alias-label-secondary);
+  cursor: pointer;
+  font: var(--dsw-font-xs-13);
+}
+
+.body {
+  padding: 12px 0;
+  font: var(--dsw-font-markdown-code-block);
+  overflow-x: auto;
+  overflow-y: hidden;
+}
+
+/* One row per file line: a fixed gutter column, then the content. No wrapping —
+   a source line's leading whitespace is meaningful and scrolls sideways. */
+.line {
+  display: flex;
+  min-height: var(--dsl-read-line-height);
+  line-height: var(--dsl-read-line-height);
+  white-space: pre;
+}
+
+.gutter {
+  flex: none;
+  width: var(--dsl-read-gutter);
+  padding-right: 14px;
+  text-align: right;
+  color: var(--dsw-alias-label-tertiary);
+  /* The gutter is chrome, not content: keep it out of a text selection so a
+     copy of the visible rows carries the source, not the line numbers. */
+  user-select: none;
+}
+
+.content {
+  color: var(--dsw-alias-label-primary);
+}
+
+.expand {
+  display: block;
+  width: 100%;
+  padding: 0 0 0 var(--dsl-read-gutter);
+  border: none;
+  background-color: transparent;
+  color: var(--dsw-alias-label-tertiary);
+  cursor: pointer;
+  font: inherit;
+  text-align: left;
+}
+
+.expand:hover {
+  color: var(--dsw-alias-label-secondary);
+}
diff --git a/packages/client/ui-primitives/src/ReadBlock.tsx b/packages/client/ui-primitives/src/ReadBlock.tsx
new file mode 100644
index 0000000000..a6a83d3668
--- /dev/null
+++ b/packages/client/ui-primitives/src/ReadBlock.tsx
@@ -0,0 +1,172 @@
+// ReadBlock: the file surface for a read tool result — a banner (label +
+// language + a "showing N of M" note when the read is a window + a copy
+// control) over line-numbered, syntax-highlighted source. Each row carries the
+// file's OWN line number in a gutter, so a windowed read past an offset keeps
+// its file numbering rather than re-counting from 1. Highlighting reuses the
+// CodeBlock shiki path (highlight.ts) at the per-line granularity a gutter
+// needs; an unknown or absent language renders plain monospace. Long content is
+// height-capped with the same head/tail arithmetic TerminalBlock uses, so the
+// two cards collapse a long body at the same place. Colors resolve through
+// --shiki-*/--dsw-* tokens.
+
+import { useCallback, useMemo, useState, useSyncExternalStore } from 'react'
+import clsx from 'clsx'
+import { writeClipboard } from './clipboard.ts'
+import {
+  grammarLoadCount,
+  highlightLines,
+  subscribeGrammarLoaded,
+  type HighlightSpan,
+} from './markdown/highlight.ts'
+import css from './ReadBlock.module.css'
+
+/**
+ * Content lines shown before the height cap collapses the middle. Matches
+ * TerminalBlock's default so a long read and a long command output cut at the
+ * same place in the same flow.
+ */
+export const DEFAULT_READ_MAX_LINES = 16
+
+/** One line of the read window: its file line number and its text (no trailing newline). */
+export interface ReadBlockLine {
+  /** 1-based line number in the file (a window past an offset keeps the file's own numbering). */
+  number: number
+  /** The line's text, already truncated to the read tool's per-line cap. */
+  text: string
+}
+
+export interface ReadBlockProps {
+  /** Banner label (the file path, or a tool-supplied replacement title); omitted draws no label. */
+  label?: string | undefined
+  /** The returned window's lines, in file order, each keeping its file line number. */
+  lines: readonly ReadBlockLine[]
+  /** Exact total line count in the file, for the "showing N of M" note when the read is a window. */
+  totalLines: number
+  /** Grammar hint (a file-extension-derived language id); unknown or absent = plain monospace. */
+  lang?: string | undefined
+  /** Height cap in content lines before the middle collapses (default {@link DEFAULT_READ_MAX_LINES}). */
+  maxLines?: number | undefined
+  /** Extra class merged onto the wrapper (callers position; this component draws). */
+  className?: string | undefined
+}
+
+/**
+ * Render one line's highlighted runs. The css-variables theme colors every run,
+ * so each run is a styled span; a line with no highlighting at all takes the
+ * bare-text path in the caller instead (an unknown or absent language).
+ * @param spans - the line's styled runs.
+ * @returns the line's children.
+ */
+function renderSpans(spans: readonly HighlightSpan[]) {
+  return spans.map((span, index) => {span.text})
+}
+
+/**
+ * Render a read tool result as a line-numbered, optionally syntax-highlighted
+ * file view.
+ * @param props - see {@link ReadBlockProps}.
+ * @returns the read block element.
+ */
+export function ReadBlock({
+  label,
+  lines,
+  totalLines,
+  lang,
+  maxLines = DEFAULT_READ_MAX_LINES,
+  className,
+}: ReadBlockProps) {
+  // The raw text the copy control writes and the highlighter tokenizes: the
+  // window's lines joined by newlines, without the file numbers or any chrome.
+  // Highlighting the whole window in one call (not line by line) keeps grammar
+  // context across lines — a multi-line string or comment stays one construct.
+  const raw = useMemo(() => lines.map(line => line.text).join('\n'), [lines])
+  // Re-render when a lazy grammar finishes loading, so a read card that showed
+  // plain text while its language's grammar imported picks up highlighting. The
+  // snapshot value is opaque; only its change across renders drives the memo.
+  const loaded = useSyncExternalStore(subscribeGrammarLoaded, grammarLoadCount, grammarLoadCount)
+  // Per-line highlighted runs aligned 1:1 with `lines`; undefined for an
+  // unknown/absent (or not-yet-loaded) language, when every line renders as
+  // bare text.
+  const highlighted = useMemo(() => highlightLines(raw, lang), [raw, lang, loaded])
+  const [expanded, setExpanded] = useState(false)
+  const [copied, setCopied] = useState(false)
+
+  const onCopy = useCallback(() => {
+    if (copied) return
+    // The window's raw text, never the rendered tree: the gutter numbers and the
+    // banner are chrome the file does not contain.
+    void writeClipboard(raw).then((ok) => {
+      if (!ok) return
+      setCopied(true)
+      window.setTimeout(() => { setCopied(false) }, 1000)
+    })
+  }, [copied, raw])
+
+  const onToggle = useCallback(() => { setExpanded(value => !value) }, [])
+
+  const hidden = lines.length - maxLines
+  const capped = hidden > 0 && !expanded
+  // Same split arithmetic as TerminalBlock's height cap, so a long read and a
+  // long command output slice their head and tail at the same place.
+  const headLines = Math.ceil(maxLines / 2)
+  const tailLines = maxLines - headLines
+  // A read is a window when its returned lines are fewer than the file's total;
+  // the note states that so a reader is not misled that the file ends here.
+  const windowed = lines.length < totalLines
+
+  /**
+   * Render a slice of the line array as gutter-numbered rows.
+   * @param slice - the lines to draw, each with its aligned run array.
+   * @returns the row elements.
+   */
+  const rows = (slice: readonly (readonly [ReadBlockLine, readonly HighlightSpan[] | undefined])[]) =>
+    slice.map(([line, spans]) => (
+      

+        {line.number}
+        {spans === undefined ? line.text : renderSpans(spans)}
+      

+    ))
+
+  // Pair each line with its aligned run array up front, so head/tail slicing
+  // keeps the two in step without re-indexing.
+  const paired = lines.map((line, index): readonly [ReadBlockLine, readonly HighlightSpan[] | undefined] =>
+    [line, highlighted?.[index]])
+
+  return (
+    

+      

+        
{label ?? ''}

+        

+          {windowed && (
+            {`显示 ${lines.length} / ${totalLines} 行`}
+          )}
+          {lang ?? ''}
+          {/* Hide copy on an empty window, matching TerminalBlock's empty-output
+              guard: a successful read of an empty file returns lines: [] with
+              card:'read', so this branch is reachable, and copying then would
+              wipe the clipboard with an empty string. */}
+          {lines.length > 0 && (
+            
+          )}
+        

+      

+      

+        {rows(capped ? paired.slice(0, headLines) : paired)}
+        {hidden > 0 && (
+          
+        )}
+        {capped && rows(paired.slice(paired.length - tailLines))}
+      

+    

+  )
+}
diff --git a/packages/client/ui-primitives/src/SearchBlock.module.css b/packages/client/ui-primitives/src/SearchBlock.module.css
new file mode 100644
index 0000000000..5eef6e4216
--- /dev/null
+++ b/packages/client/ui-primitives/src/SearchBlock.module.css
@@ -0,0 +1,120 @@
+/* Geometry mirrors CodeBlock and TerminalBlock (12px radius, code-block
+   surface + banner row, markdown code-block font) so a search card reads as one
+   family with them. The deliberate divergence they share: the result rows keep
+   `white-space: pre` and scroll horizontally, because folding a long match line
+   or path destroys the alignment a reader scans by. */
+
+.block {
+  --dsl-search-radius: 12px;
+  --dsl-search-line-height: 22px;
+
+  position: relative;
+  margin: 16px 0;
+  color: var(--dsw-alias-label-primary);
+  background: var(--dsw-alias-markdown-code-block);
+  border-radius: var(--dsl-search-radius);
+}
+
+/* The banner: result summary on the left, the copy control holding its
+   intrinsic width on the right. */
+.header {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 9px 14px;
+  background: var(--dsw-alias-markdown-code-block-banner);
+  border-top-left-radius: var(--dsl-search-radius);
+  border-top-right-radius: var(--dsl-search-radius);
+}
+
+.summary {
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font: var(--dsw-font-xs-13);
+  color: var(--dsw-alias-label-secondary);
+}
+
+.copyButton {
+  flex: none;
+  background-color: transparent;
+  border: none;
+  padding: 0;
+  margin: 0;
+  color: var(--dsw-alias-label-secondary);
+  cursor: pointer;
+  font: var(--dsw-font-xs-13);
+}
+
+.body {
+  padding: 8px 14px 12px 0;
+  font: var(--dsw-font-markdown-code-block);
+  overflow-x: auto;
+  overflow-y: hidden;
+}
+
+/* No wrapping: a match line or a path keeps its content on one row and scrolls
+   sideways instead of folding. */
+.line {
+  min-height: var(--dsl-search-line-height);
+  padding-left: 14px;
+  white-space: pre;
+}
+
+/* The 1-based line number ahead of a grep match line, dimmed so the match text
+   stays the salient content. */
+.lineNumber {
+  color: var(--dsw-alias-label-tertiary);
+}
+
+/* A file group's header: a bold path label plus its match count, the whole row
+   the collapse control. */
+.fileHeader {
+  display: flex;
+  align-items: baseline;
+  gap: 8px;
+  width: 100%;
+  min-height: var(--dsl-search-line-height);
+  padding: 0 14px;
+  border: none;
+  background-color: transparent;
+  cursor: pointer;
+  font: inherit;
+  text-align: left;
+}
+
+.filePath {
+  min-width: 0;
+  font-weight: 600;
+  color: var(--dsw-alias-label-primary);
+  white-space: pre;
+}
+
+.fileCount {
+  flex: none;
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.expand {
+  display: block;
+  width: 100%;
+  padding: 0 14px;
+  border: none;
+  background-color: transparent;
+  color: var(--dsw-alias-label-tertiary);
+  cursor: pointer;
+  font: inherit;
+  text-align: left;
+}
+
+.expand:hover {
+  color: var(--dsw-alias-label-secondary);
+}
+
+.empty {
+  padding: 12px 14px;
+  font: var(--dsw-font-markdown-code-block);
+  color: var(--dsw-alias-label-tertiary);
+}
diff --git a/packages/client/ui-primitives/src/SearchBlock.tsx b/packages/client/ui-primitives/src/SearchBlock.tsx
new file mode 100644
index 0000000000..463a3bfa26
--- /dev/null
+++ b/packages/client/ui-primitives/src/SearchBlock.tsx
@@ -0,0 +1,277 @@
+// SearchBlock: the search surface for a completed content or path search — a
+// banner (result summary that folds the pre-cap total in when the tool capped
+// the result, plus a copy control), then either grep matches grouped by file
+// (each file a bold
+// path header with its `lineNumber: line` rows, the group collapsible) or a
+// flat glob path list. Both shapes flatten to one list of rows the height cap
+// slices head/tail over, and neither soft-wraps: a long match line or path
+// scrolls horizontally instead of folding. Geometry mirrors CodeBlock and
+// TerminalBlock so a search card reads as one family with them.
+
+import { useCallback, useState, type ReactNode } from 'react'
+import clsx from 'clsx'
+import { headTailCap } from './head-tail-cap.ts'
+import { useCopyFeedback } from './use-copy-feedback.ts'
+import css from './SearchBlock.module.css'
+
+/**
+ * Result rows shown before the height cap collapses the middle. Matches
+ * {@link DEFAULT_TERMINAL_MAX_LINES} so a search card and a terminal card cut a
+ * long result at the same place.
+ */
+export const DEFAULT_SEARCH_MAX_LINES = 16
+
+/** One matched line inside a {@link SearchFileGroup}: its 1-based line number and text. */
+export interface SearchBlockLineMatch {
+  /** 1-based line number of the match within its file. */
+  lineNumber: number
+  /** The matched line text, as the tool surfaced it. */
+  line: string
+}
+
+/** One file's grouped matches, in first-seen file order. */
+export interface SearchFileGroup {
+  /** The file the matches belong to (the display path). */
+  path: string
+  /** The file's matched lines, in output order. */
+  matches: SearchBlockLineMatch[]
+}
+
+/** Fields both search shapes carry (the render site positions; this component draws). */
+interface SearchBlockCommon {
+  /**
+   * Whether the tool capped the inline result: the shape carries only the
+   * retained results, not every result the search found. The banner summary
+   * folds the pre-cap `total` in (`显示 X / 共 N …`) so the card never presents a
+   * capped result as complete.
+   */
+  truncated: boolean
+  /** Total results the search found before capping (equals the retained count when not `truncated`). */
+  total: number
+  /** Height cap in rows before the middle collapses (default {@link DEFAULT_SEARCH_MAX_LINES}). */
+  maxLines?: number | undefined
+  /** Extra class merged onto the wrapper. */
+  className?: string | undefined
+}
+
+/** Props for the grouped-matches (`grep`) shape. */
+export interface SearchMatchesBlockProps extends SearchBlockCommon {
+  kind: 'matches'
+  /** Matched lines grouped by file, in first-seen file order. */
+  files: SearchFileGroup[]
+}
+
+/** Props for the flat-path (`glob`) shape. */
+export interface SearchPathsBlockProps extends SearchBlockCommon {
+  kind: 'paths'
+  /** The discovered paths, in the tool's result order (the retained page when `truncated`). */
+  paths: string[]
+}
+
+/** {@link SearchBlock} props: one card, two `kind`-discriminated shapes. */
+export type SearchBlockProps = SearchMatchesBlockProps | SearchPathsBlockProps
+
+/**
+ * One flattened render row. A matches card produces a `file` header row per
+ * group followed by a `match` row per retained line while the group is
+ * expanded; a paths card produces one `path` row per path. The height cap
+ * counts these rows uniformly, so a file header costs one row exactly as a
+ * match line or a path does.
+ */
+type SearchRow =
+  | { type: 'file'; path: string; count: number; index: number; collapsed: boolean }
+  | { type: 'match'; lineNumber: number; line: string; key: string; fileIndex: number }
+  | { type: 'path'; path: string }
+
+/**
+ * The plain-text form the copy control writes: the whole structured result
+ * regardless of the height cap or which groups are collapsed, so the clipboard
+ * carries the result rather than what the card happens to be showing.
+ * @param props - the card's props.
+ * @returns the copyable text, or the empty string for an empty result.
+ */
+function copyText(props: SearchBlockProps): string {
+  if (props.kind === 'paths') return props.paths.join('\n')
+  return props.files
+    .map(file => [file.path, ...file.matches.map(m => `${m.lineNumber}: ${m.line}`)].join('\n'))
+    .join('\n\n')
+}
+
+/**
+ * Number of retained results the card holds: the matched-line count across all
+ * files for a matches card, the path count for a paths card. This is the count
+ * the banner summary reports against `total` when the result was capped.
+ * @param props - the card's props.
+ * @returns the retained result count.
+ */
+function shownCount(props: SearchBlockProps): number {
+  return props.kind === 'paths'
+    ? props.paths.length
+    : props.files.reduce((sum, file) => sum + file.matches.length, 0)
+}
+
+/**
+ * The banner summary. When the search was capped it reads `显示 X / 共 N …` so
+ * the retained count and the pre-cap total sit in one clause (mirroring the read
+ * card's `显示 X / Y 行`); when it was not capped it is a plain count of what the
+ * card holds. The unit — `处匹配 · K 个文件` for grep, `个路径` for glob — trails
+ * the count either way.
+ * @param props - the card's props.
+ * @param shown - the retained result count from {@link shownCount}.
+ * @param truncated - whether the search was capped.
+ * @param total - the pre-cap total the truncation clause reports.
+ * @returns the summary text.
+ */
+function summaryText(props: SearchBlockProps, shown: number, truncated: boolean, total: number): string {
+  const count = truncated ? `显示 ${shown} / 共 ${total}` : `${shown}`
+  return props.kind === 'paths'
+    ? `${count} 个路径`
+    : `${count} 处匹配 · ${props.files.length} 个文件`
+}
+
+/**
+ * Flatten a card's shape into its render rows, dropping a collapsed file
+ * group's match rows.
+ * @param props - the card's props.
+ * @param collapsed - the set of collapsed file-group indices (matches only).
+ * @returns the flattened rows in output order.
+ */
+function toRows(props: SearchBlockProps, collapsed: ReadonlySet): SearchRow[] {
+  if (props.kind === 'paths') return props.paths.map((path): SearchRow => ({ type: 'path', path }))
+  const rows: SearchRow[] = []
+  props.files.forEach((file, index) => {
+    const isCollapsed = collapsed.has(index)
+    rows.push({ type: 'file', path: file.path, count: file.matches.length, index, collapsed: isCollapsed })
+    if (isCollapsed) return
+    for (const match of file.matches) {
+      rows.push({ type: 'match', lineNumber: match.lineNumber, line: match.line, key: `${index}:${match.lineNumber}`, fileIndex: index })
+    }
+  })
+  return rows
+}
+
+/**
+ * A stable React key for a flattened render row: the group-scoped match key, a
+ * file-index-scoped header key, or the path itself. Rows of different types
+ * never collide, since each key carries its type prefix or the group index.
+ * @param row - the flattened row.
+ * @returns the key.
+ */
+function rowKey(row: SearchRow): string {
+  switch (row.type) {
+    case 'match': return `match:${row.key}`
+    case 'file': return `file:${row.index}`
+    case 'path': return `path:${row.path}`
+  }
+}
+
+/**
+ * Render a completed search as a grouped-matches or flat-path card.
+ * @param props - see {@link SearchBlockProps}.
+ * @returns the search block element.
+ */
+export function SearchBlock(props: SearchBlockProps) {
+  const { truncated, total, maxLines = DEFAULT_SEARCH_MAX_LINES, className } = props
+  const [expanded, setExpanded] = useState(false)
+  const [collapsed, setCollapsed] = useState>(() => new Set())
+
+  // `props` is a fresh object each render, so memoizing on it never hits; the
+  // flatten is cheap, so it runs inline keyed on the collapse set instead.
+  const rows = toRows(props, collapsed)
+  const shown = shownCount(props)
+  const empty = rows.length === 0
+  const { copied, onCopy } = useCopyFeedback(copyText(props))
+
+  const onToggle = useCallback(() => { setExpanded(value => !value) }, [])
+
+  const toggleFile = useCallback((index: number) => {
+    setCollapsed((prev) => {
+      const next = new Set(prev)
+      if (next.has(index)) next.delete(index)
+      else next.add(index)
+      return next
+    })
+  }, [])
+
+  const { hidden, capped, headLines, tailLines } = headTailCap(rows.length, maxLines, expanded)
+  const head = capped ? rows.slice(0, headLines) : rows
+  const naturalTail = capped ? rows.slice(rows.length - tailLines) : []
+  // When the tail slice begins inside a file's matches, its own header sits
+  // above the cut and is not shown, so those rows could not be attributed to a
+  // file. Restore the owning header at the top of the tail — unless the head
+  // slice already carries it (a single large file), where it would duplicate.
+  const tailLead = naturalTail[0]
+  const tailHeader = tailLead?.type === 'match'
+    && !head.some(row => row.type === 'file' && row.index === tailLead.fileIndex)
+    ? rows.find((row): row is Extract =>
+      row.type === 'file' && row.index === tailLead.fileIndex)
+    : undefined
+  // The restored header is itself a row. Left extra it would push the card to
+  // maxLines + 1 and overstate `hidden` by one, so it consumes a tail slot: drop
+  // the tail's first row (the match whose header this is) for it. Visible rows
+  // hold at maxLines and `hidden` stays exact; the dropped match joins the
+  // hidden middle.
+  const tail = tailHeader === undefined ? naturalTail : naturalTail.slice(1)
+
+  const renderRow = (row: SearchRow): ReactNode => {
+    if (row.type === 'path') return 
{row.path}

+    if (row.type === 'match') {
+      return (
+        

+          {row.lineNumber}: 
+          {row.line}
+        

+      )
+    }
+    return (
+      
+    )
+  }
+
+  return (
+    

+      

+        {summaryText(props, shown, truncated, total)}
+        {!empty && (
+          
+        )}
+      

+      {empty
+        ? 
无结果

+        : (
+          

+            {head.map(row => (
+              
{renderRow(row)}

+            ))}
+            {hidden > 0 && (
+              
+            )}
+            {tailHeader !== undefined && (
+              
{renderRow(tailHeader)}

+            )}
+            {tail.map(row => (
+              
{renderRow(row)}

+            ))}
+          

+        )}
+    

+  )
+}
diff --git a/packages/client/ui-primitives/src/TerminalBlock.tsx b/packages/client/ui-primitives/src/TerminalBlock.tsx
index 1738a5b626..4cec564da6 100644
--- a/packages/client/ui-primitives/src/TerminalBlock.tsx
+++ b/packages/client/ui-primitives/src/TerminalBlock.tsx
@@ -8,7 +8,8 @@
 import { useCallback, useMemo, useState } from 'react'
 import clsx from 'clsx'
 import { parseAnsiLines, type AnsiLine } from './ansi.ts'
-import { writeClipboard } from './clipboard.ts'
+import { headTailCap } from './head-tail-cap.ts'
+import { useCopyFeedback } from './use-copy-feedback.ts'
 import { Pill } from './Pill.tsx'
 import { StateDot, type StateDotState } from './StateDot.tsx'
 import css from './TerminalBlock.module.css'
@@ -202,18 +203,9 @@ export function TerminalBlock({
     return terminated ? parsed.slice(0, -1) : parsed
   }, [text])
   const [expanded, setExpanded] = useState(false)
-  const [copied, setCopied] = useState(false)
-
-  const onCopy = useCallback(() => {
-    if (copied) return
-    // The raw output, never the rendered tree: the prompt line and the status
-    // pill are chrome the user did not run.
-    void writeClipboard(text).then((ok) => {
-      if (!ok) return
-      setCopied(true)
-      window.setTimeout(() => { setCopied(false) }, 1000)
-    })
-  }, [copied, text])
+  // The raw output, never the rendered tree: the prompt line and the status pill
+  // are chrome the user did not run.
+  const { copied, onCopy } = useCopyFeedback(text)
 
   const onToggle = useCallback(() => { setExpanded(value => !value) }, [])
 
@@ -232,12 +224,7 @@ export function TerminalBlock({
   // the raw text drew an output box of blank rows plus a copy control for
   // invisible bytes, and hid the placeholder that belongs there.
   const empty = lines.every(line => line.every(span => span.text.trim() === ''))
-  const hidden = lines.length - maxLines
-  const capped = hidden > 0 && !expanded
-  // Same split arithmetic as the TUI transcript's collapsed tool card, so a
-  // command's head and tail slices agree between the two front ends.
-  const headLines = Math.ceil(maxLines / 2)
-  const tailLines = maxLines - headLines
+  const { hidden, capped, headLines, tailLines } = headTailCap(lines.length, maxLines, expanded)
 
   return (
     

diff --git a/packages/client/ui-primitives/src/head-tail-cap.ts b/packages/client/ui-primitives/src/head-tail-cap.ts
new file mode 100644
index 0000000000..1ac540dd21
--- /dev/null
+++ b/packages/client/ui-primitives/src/head-tail-cap.ts
@@ -0,0 +1,33 @@
+// Head/tail height-cap arithmetic shared by the block primitives (TerminalBlock,
+// SearchBlock) and matching the TUI transcript's collapsed tool card, so a long
+// result's head and tail slices agree across every surface. The split is
+// `ceil(maxLines / 2)` head rows and the remainder as tail rows; a result within
+// the cap shows every row and hides none.
+
+/** The head/tail split metrics for a capped list. */
+export interface HeadTailCap {
+  /** Rows beyond the cap (list length − maxLines); ≤ 0 means nothing is hidden. */
+  hidden: number
+  /** Whether the list is over the cap and not expanded, so it shows a head/tail slice. */
+  capped: boolean
+  /** Head-slice row count: `ceil(maxLines / 2)`. */
+  headLines: number
+  /** Tail-slice row count: the remainder after the head. */
+  tailLines: number
+}
+
+/**
+ * Compute the head/tail cap metrics for a list of `total` rows against `maxLines`,
+ * given whether the surface is expanded. Pure arithmetic; the caller slices its
+ * own rows with `headLines`/`tailLines` so a block can layer its own concerns
+ * (SearchBlock restores a tail file header) on top.
+ * @param total - the list's row count.
+ * @param maxLines - the collapsed-height cap in rows.
+ * @param expanded - whether the surface is expanded (uncaps the list).
+ * @returns the split metrics.
+ */
+export function headTailCap(total: number, maxLines: number, expanded: boolean): HeadTailCap {
+  const hidden = total - maxLines
+  const headLines = Math.ceil(maxLines / 2)
+  return { hidden, capped: hidden > 0 && !expanded, headLines, tailLines: maxLines - headLines }
+}
diff --git a/packages/client/ui-primitives/src/index.ts b/packages/client/ui-primitives/src/index.ts
index 39b40bf680..e5100b2db5 100644
--- a/packages/client/ui-primitives/src/index.ts
+++ b/packages/client/ui-primitives/src/index.ts
@@ -24,6 +24,12 @@ export { JsonTree } from './JsonTree.tsx'
 export type { JsonTreeProps, JsonTreeLabels } from './JsonTree.tsx'
 export { TerminalBlock, DEFAULT_TERMINAL_MAX_LINES } from './TerminalBlock.tsx'
 export type { TerminalBlockProps, TerminalBlockLabels } from './TerminalBlock.tsx'
+export { SearchBlock, DEFAULT_SEARCH_MAX_LINES } from './SearchBlock.tsx'
+export type {
+  SearchBlockProps, SearchMatchesBlockProps, SearchPathsBlockProps, SearchFileGroup, SearchBlockLineMatch,
+} from './SearchBlock.tsx'
+export { ReadBlock, DEFAULT_READ_MAX_LINES } from './ReadBlock.tsx'
+export type { ReadBlockProps, ReadBlockLine } from './ReadBlock.tsx'
 export { DiffBlock, DEFAULT_DIFF_MAX_LINES } from './DiffBlock.tsx'
 export type { DiffBlockProps, DiffHunk } from './DiffBlock.tsx'
 export { WebBlock, DEFAULT_WEB_MAX_SOURCES } from './WebBlock.tsx'
diff --git a/packages/client/ui-primitives/src/markdown/CodeBlock.tsx b/packages/client/ui-primitives/src/markdown/CodeBlock.tsx
index e161be4b9f..7f2fb1caf7 100644
--- a/packages/client/ui-primitives/src/markdown/CodeBlock.tsx
+++ b/packages/client/ui-primitives/src/markdown/CodeBlock.tsx
@@ -4,10 +4,10 @@
 // plain fallback for everything else. Chrome (language banner + copy) matches
 // deepsuite `@deepseek/md` code blocks; token colors stay on `--shiki-*`.
 
-import { useCallback, useMemo, useRef, useState } from 'react'
+import { useCallback, useMemo, useRef, useState, useSyncExternalStore } from 'react'
 import clsx from 'clsx'
 import { writeClipboard } from '../clipboard.ts'
-import { highlightToHtml } from './highlight.ts'
+import { grammarLoadCount, highlightToHtml, subscribeGrammarLoaded } from './highlight.ts'
 import css from './CodeBlock.module.css'
 
 export interface CodeBlockProps {
@@ -25,7 +25,11 @@ export interface CodeBlockProps {
 
 export function CodeBlock({ code, lang, className, copyLabel = '复制', copiedLabel = '复制成功' }: CodeBlockProps) {
   const trimmed = code.endsWith('\n') ? code.slice(0, -1) : code
-  const html = useMemo(() => highlightToHtml(trimmed, lang), [trimmed, lang])
+  // Re-render when a lazy grammar finishes loading, so a fence that showed plain
+  // text while its language's grammar imported picks up highlighting. The
+  // snapshot value is opaque; only its change across renders drives the memo.
+  const loaded = useSyncExternalStore(subscribeGrammarLoaded, grammarLoadCount, grammarLoadCount)
+  const html = useMemo(() => highlightToHtml(trimmed, lang), [trimmed, lang, loaded])
   const rootRef = useRef(null)
   const [copied, setCopied] = useState(false)
 
diff --git a/packages/client/ui-primitives/src/markdown/highlight.ts b/packages/client/ui-primitives/src/markdown/highlight.ts
index 1fa50f6d2f..d0727c833a 100644
--- a/packages/client/ui-primitives/src/markdown/highlight.ts
+++ b/packages/client/ui-primitives/src/markdown/highlight.ts
@@ -5,10 +5,17 @@
  * theme package's token sheets as `--shiki-*` custom properties (light and
  * dark blocks), never here — the repo's tokens-only styling rule.
  *
- * Grammars are the set the harness actually renders: TypeScript programs
- * (`run_code` bodies; TS pulls in JS via grammar embedding), shell commands,
- * and JSON payloads. An unknown or absent language falls back to plain text
- * (no highlighting, still monospace) — never an error.
+ * Only the three markdown-fence and `run_code` grammars (TypeScript, shell,
+ * JSON) load into the singleton at boot — the set every session renders. The
+ * read card's wider extension set (the file-extension language hints the read
+ * tool's `langFromPath` emits — `packages/fs/tool-fs`: python, rust, yaml,
+ * markup, …) is imported lazily and registered the first time such a language
+ * is requested, so a session that never opens a read card in one of those
+ * languages pays neither the ~1.6 MB of grammar modules nor their synchronous
+ * init. The first render of a lazy language falls back to plain text while its
+ * grammar loads, then {@link onGrammarLoaded} notifies subscribers to re-render
+ * with highlighting. An unknown or absent language falls back to plain text (no
+ * highlighting, still monospace) — never an error.
  */
 
 import { createHighlighterCoreSync, createCssVariablesTheme } from 'shiki/core'
@@ -17,12 +24,69 @@ import langTs from '@shikijs/langs/typescript'
 import langBash from '@shikijs/langs/shellscript'
 import langJson from '@shikijs/langs/json'
 import type { HighlighterCore } from 'shiki/core'
+import type { CSSProperties } from 'react'
+
+/** A shiki grammar module's default export (a `LanguageRegistration[]`), taken
+ *  from a boot grammar so no direct `@shikijs/types` dependency is needed. */
+type LangModule = { default: typeof langTs }
 
 /**
- * Language ids (and aliases) the singleton registers; everything else renders
+ * Grammars the singleton loads at boot; each entry's own `name` is the id
+ * `codeToTokens`/`codeToHtml` resolve. The JS-family aliases (js/jsx/ts/tsx)
+ * resolve to the TypeScript grammar rather than a separate one: it tokenizes
+ * plain TS/JS exactly, and JSX/TSX approximately (shiki's TS grammar is not the
+ * dedicated TSX grammar, so JSX elements tokenize imperfectly) — an accepted
+ * trade to keep the boot set to one JS-family grammar. The read card's wider
+ * set loads lazily through {@link LAZY_GRAMMARS}.
+ */
+const LANGS = [langTs, langBash, langJson]
+
+/**
+ * The read card's extension grammars, each behind a dynamic import so its
+ * module stays out of the boot chunk until a read of that language renders.
+ * Keyed by the grammar id (`LanguageRegistration.name`) the aliases resolve to.
+ * `@shikijs/langs`' default export is a `LanguageRegistration[]`; the loader
+ * hands the whole array to `loadLanguageSync`, which registers each entry
+ * (including embedded sub-grammars). The three boot grammars are absent —
+ * already loaded, so no alias value ever points at a missing entry here.
+ */
+const LAZY_GRAMMARS = new Map Promise>([
+  ['python', () => import('@shikijs/langs/python')],
+  ['ruby', () => import('@shikijs/langs/ruby')],
+  ['go', () => import('@shikijs/langs/go')],
+  ['rust', () => import('@shikijs/langs/rust')],
+  ['java', () => import('@shikijs/langs/java')],
+  ['c', () => import('@shikijs/langs/c')],
+  ['cpp', () => import('@shikijs/langs/cpp')],
+  ['csharp', () => import('@shikijs/langs/csharp')],
+  ['kotlin', () => import('@shikijs/langs/kotlin')],
+  ['swift', () => import('@shikijs/langs/swift')],
+  ['php', () => import('@shikijs/langs/php')],
+  ['yaml', () => import('@shikijs/langs/yaml')],
+  ['toml', () => import('@shikijs/langs/toml')],
+  ['ini', () => import('@shikijs/langs/ini')],
+  ['markdown', () => import('@shikijs/langs/markdown')],
+  ['mdx', () => import('@shikijs/langs/mdx')],
+  ['html', () => import('@shikijs/langs/html')],
+  ['css', () => import('@shikijs/langs/css')],
+  ['scss', () => import('@shikijs/langs/scss')],
+  ['less', () => import('@shikijs/langs/less')],
+  ['sql', () => import('@shikijs/langs/sql')],
+  ['xml', () => import('@shikijs/langs/xml')],
+  ['lua', () => import('@shikijs/langs/lua')],
+])
+
+/**
+ * Language ids (and aliases) the highlighter accepts; everything else renders
  * plain. A Map, not an object: fence info strings are assistant-authored, so
  * a label like `constructor` or `__proto__` must miss instead of resolving an
- * inherited property and crashing the renderer inside shiki.
+ * inherited property and crashing the renderer inside shiki. Keys cover both
+ * the markdown-fence aliases `CodeBlock` uses and the file-extension hint ids
+ * the read tool's `langFromPath` emits, so both callers resolve the same
+ * grammars. The JS family maps to the TypeScript grammar (see {@link LANGS} for
+ * the JSX/TSX approximation), unchanged from when this was the only
+ * non-shell/JSON grammar. A value not in {@link LANGS} names a
+ * {@link LAZY_GRAMMARS} entry loaded on first use.
  */
 const LANG_ALIASES = new Map([
   ['typescript', 'typescript'],
@@ -30,6 +94,7 @@ const LANG_ALIASES = new Map([
   ['tsx', 'typescript'],
   ['javascript', 'typescript'],
   ['js', 'typescript'],
+  ['jsx', 'typescript'],
   ['shellscript', 'shellscript'],
   ['bash', 'shellscript'],
   ['sh', 'shellscript'],
@@ -37,6 +102,35 @@ const LANG_ALIASES = new Map([
   ['zsh', 'shellscript'],
   ['json', 'json'],
   ['jsonc', 'json'],
+  ['py', 'python'],
+  ['python', 'python'],
+  ['rb', 'ruby'],
+  ['ruby', 'ruby'],
+  ['go', 'go'],
+  ['rs', 'rust'],
+  ['rust', 'rust'],
+  ['java', 'java'],
+  ['c', 'c'],
+  ['cpp', 'cpp'],
+  ['cs', 'csharp'],
+  ['csharp', 'csharp'],
+  ['kotlin', 'kotlin'],
+  ['swift', 'swift'],
+  ['php', 'php'],
+  ['yaml', 'yaml'],
+  ['yml', 'yaml'],
+  ['toml', 'toml'],
+  ['ini', 'ini'],
+  ['md', 'markdown'],
+  ['markdown', 'markdown'],
+  ['mdx', 'mdx'],
+  ['html', 'html'],
+  ['css', 'css'],
+  ['scss', 'scss'],
+  ['less', 'less'],
+  ['sql', 'sql'],
+  ['xml', 'xml'],
+  ['lua', 'lua'],
 ])
 
 /** All token colors resolve through `--shiki-*` custom properties (theme package sheets). */
@@ -52,12 +146,68 @@ let singleton: HighlighterCore | undefined
 function highlighter(): HighlighterCore {
   singleton ??= createHighlighterCoreSync({
     themes: [cssVariablesTheme],
-    langs: [langTs, langBash, langJson],
+    langs: LANGS,
     engine: createJavaScriptRegexEngine({ forgiving: true }),
   })
   return singleton
 }
 
+/** Grammar ids whose lazy import is in flight or done, so it is requested once. */
+const requested = new Set()
+/** Subscribers re-rendered after a lazy grammar registers (React callers). */
+const listeners = new Set<() => void>()
+/** Bumped on each lazy-grammar load; the `useSyncExternalStore` snapshot. */
+let loadCount = 0
+
+/**
+ * Subscribe to lazy-grammar load completions; `listener` fires after a
+ * {@link LAZY_GRAMMARS} grammar finishes registering on the singleton, so a
+ * caller that rendered its plain fallback while the grammar loaded can
+ * re-highlight. Shaped as a `useSyncExternalStore` subscribe: pair it with
+ * {@link grammarLoadCount} as the snapshot. Returns an unsubscribe function.
+ * @param listener - invoked (no args) on each grammar-load completion.
+ * @returns a disposer that removes the listener.
+ */
+export function subscribeGrammarLoaded(listener: () => void): () => void {
+  listeners.add(listener)
+  return () => { listeners.delete(listener) }
+}
+
+/**
+ * The lazy-grammar load counter — a value that changes on every load, so a
+ * `useSyncExternalStore` snapshot re-renders the subscriber when a grammar
+ * registers. Opaque: only its identity across renders matters.
+ * @returns the current load count.
+ */
+export function grammarLoadCount(): number {
+  return loadCount
+}
+
+/**
+ * Ensure the grammar `resolved` names is registered. A boot grammar (not in
+ * {@link LAZY_GRAMMARS}) and an already-loaded lazy grammar report ready
+ * synchronously; a lazy grammar not yet loaded starts its import (once) and
+ * reports not-ready, so the caller renders plain until a
+ * {@link subscribeGrammarLoaded} listener fires.
+ * @param resolved - the grammar id an alias resolved to.
+ * @returns whether the grammar is registered and ready to tokenize now.
+ */
+function ensureGrammar(resolved: string): boolean {
+  const load = LAZY_GRAMMARS.get(resolved)
+  // A boot grammar (already registered) has no lazy loader; it is always ready.
+  if (load === undefined) return true
+  if (highlighter().getLoadedLanguages().includes(resolved)) return true
+  if (!requested.has(resolved)) {
+    requested.add(resolved)
+    void load().then((mod) => {
+      highlighter().loadLanguageSync(mod.default)
+      loadCount += 1
+      for (const listener of listeners) listener()
+    })
+  }
+  return false
+}
+
 // Engine + grammar construction costs a long task (~120-175ms); building it
 // during the first finalized fence's render would jank exactly when a stream
 // completes. Warm the singleton in a deferred task at module load (= plugin
@@ -70,13 +220,59 @@ const warmupTimer = setTimeout(() => { highlighter() }, 0)
 /**
  * Highlight `code` into shiki's HTML (a single `
` tree)
  * when `lang` maps to a registered grammar; `undefined` means the caller
- * renders its plain fallback.
+ * renders its plain fallback. A lazy grammar not yet loaded returns `undefined`
+ * for this call and loads in the background; subscribe with
+ * {@link onGrammarLoaded} to re-highlight once it registers.
  * @param code - the source text.
  * @param lang - the language hint (a markdown fence info string or a fixed caller id).
- * @returns the highlighted HTML, or `undefined` for unknown languages.
+ * @returns the highlighted HTML, or `undefined` for unknown or not-yet-loaded languages.
  */
 export function highlightToHtml(code: string, lang: string | undefined): string | undefined {
   const resolved = lang === undefined ? undefined : LANG_ALIASES.get(lang.toLowerCase())
   if (resolved === undefined) return undefined
+  if (!ensureGrammar(resolved)) return undefined
   return highlighter().codeToHtml(code, { lang: resolved, theme: 'css-variables' })
 }
+
+/**
+ * One highlighted run of a line: the text and the inline style shiki assigned
+ * it. The css-variables theme colors every run through a `--shiki-*` custom
+ * property, so `style.color` is always present; it is held as a style object
+ * rather than a bare color so a run spreads onto a `` uniformly.
+ */
+export interface HighlightSpan {
+  text: string
+  style: CSSProperties
+}
+
+/**
+ * Tokenize `code` into per-line highlighted runs when `lang` maps to a
+ * registered grammar; `undefined` means the caller renders its plain fallback.
+ * A line-numbered view needs the token runs split per line (one gutter number
+ * per line), which the single-`
` {@link highlightToHtml} does not expose,
+ * so this returns shiki's own 2D line/token structure narrowed to what a run
+ * renders. Each run's color is a `--shiki-*` custom property, keeping token
+ * colors on the theme package's sheets exactly as the HTML path does; the
+ * css-variables theme carries no font-style bits, matching that path's
+ * color-only output. The trailing newline shiki appends as a final empty line
+ * is dropped so the run count matches the caller's own line array.
+ * @param code - the source text.
+ * @param lang - the language hint (a file-extension-derived language id).
+ * @returns one entry per source line (each an array of runs), or `undefined` for unknown or not-yet-loaded languages.
+ */
+export function highlightLines(code: string, lang: string | undefined): HighlightSpan[][] | undefined {
+  const resolved = lang === undefined ? undefined : LANG_ALIASES.get(lang.toLowerCase())
+  if (resolved === undefined) return undefined
+  if (!ensureGrammar(resolved)) return undefined
+  const { tokens } = highlighter().codeToTokens(code, { lang: resolved, theme: 'css-variables' })
+  // shiki tokenizes `a\nb` into two lines; a trailing newline (`a\n`) adds a
+  // third, empty line the caller's own line array does not carry. Drop that
+  // one terminator line so the two structures stay in step. The explicit
+  // `last !== undefined` (over `tokens[...]?.length`) keeps a single branch for
+  // per-file coverage, matching TerminalBlock's terminator check.
+  const last = tokens[tokens.length - 1]
+  const lines = tokens.length > 1 && last !== undefined && last.length === 0
+    ? tokens.slice(0, -1)
+    : tokens
+  return lines.map(line => line.map(token => ({ text: token.content, style: { color: token.color } })))
+}
diff --git a/packages/client/ui-primitives/src/use-copy-feedback.ts b/packages/client/ui-primitives/src/use-copy-feedback.ts
new file mode 100644
index 0000000000..1340a00625
--- /dev/null
+++ b/packages/client/ui-primitives/src/use-copy-feedback.ts
@@ -0,0 +1,37 @@
+// The copy-to-clipboard-with-feedback hook shared by the block primitives
+// (TerminalBlock, SearchBlock): write the given text, and on success flip a
+// transient `copied` flag that the caller renders as a "复制成功" label for one
+// second. A refused write leaves the flag untouched, so the control never claims
+// a copy the host declined.
+
+import { useCallback, useState } from 'react'
+import { writeClipboard } from './clipboard.ts'
+
+/** How long the `copied` flag stays true after a successful write, in ms. */
+const COPIED_FEEDBACK_MS = 1000
+
+/** The copy-feedback hook's return: the transient flag and the copy handler. */
+export interface CopyFeedback {
+  /** True for {@link COPIED_FEEDBACK_MS} after a successful write; render the success label off it. */
+  copied: boolean
+  /** Copy the hook's text; no-op while `copied` is still true, silent on a refused write. */
+  onCopy: () => void
+}
+
+/**
+ * Copy `text` to the clipboard with one-second success feedback.
+ * @param text - the text to write on copy.
+ * @returns the `copied` flag and the `onCopy` handler.
+ */
+export function useCopyFeedback(text: string): CopyFeedback {
+  const [copied, setCopied] = useState(false)
+  const onCopy = useCallback(() => {
+    if (copied) return
+    void writeClipboard(text).then((ok) => {
+      if (!ok) return
+      setCopied(true)
+      window.setTimeout(() => { setCopied(false) }, COPIED_FEEDBACK_MS)
+    })
+  }, [copied, text])
+  return { copied, onCopy }
+}
diff --git a/packages/client/ui-primitives/tests/code-block.spec.tsx b/packages/client/ui-primitives/tests/code-block.spec.tsx
index 47b0ad24fb..2d56bc1a2d 100644
--- a/packages/client/ui-primitives/tests/code-block.spec.tsx
+++ b/packages/client/ui-primitives/tests/code-block.spec.tsx
@@ -31,6 +31,24 @@ describe('highlightToHtml', () => {
     expect(highlightToHtml('x', 'cobol')).toBeUndefined()
     expect(highlightToHtml('x', undefined)).toBeUndefined()
   })
+
+  // Every read-tool language hint whose grammar loads lazily (the boot set —
+  // ts/js/bash/sh/json — is covered above). Touching each one drives its own
+  // dynamic import thunk, so the whole LAZY_GRAMMARS table is exercised.
+  const LAZY_ALIASES = [
+    'py', 'rb', 'go', 'rs', 'java', 'c', 'cpp', 'cs', 'kotlin', 'swift', 'php',
+    'yaml', 'toml', 'ini', 'md', 'mdx', 'html', 'css', 'scss', 'less', 'sql',
+    'xml', 'lua',
+  ]
+
+  it('lazily loads every read-card grammar: plain first, highlighted after load', async () => {
+    // First touch returns the plain fallback (undefined) and starts the import.
+    for (const alias of LAZY_ALIASES) expect(highlightToHtml('x', alias)).toBeUndefined()
+    // Once every grammar has registered, the same call highlights.
+    await vi.waitFor(() => {
+      for (const alias of LAZY_ALIASES) expect(highlightToHtml('x', alias)).toContain('shiki')
+    })
+  })
 })
 
 describe('CodeBlock', () => {
diff --git a/packages/client/ui-primitives/tests/read-block.spec.tsx b/packages/client/ui-primitives/tests/read-block.spec.tsx
new file mode 100644
index 0000000000..fab9450932
--- /dev/null
+++ b/packages/client/ui-primitives/tests/read-block.spec.tsx
@@ -0,0 +1,241 @@
+// @vitest-environment jsdom
+// ReadBlock + the highlightLines token path: the banner (label, language, the
+// "showing N of M" note only when the read is a window, copy control), the
+// gutter-numbered rows keeping the file's own line numbers, the shiki per-line
+// highlighting resolved to css-variables token spans with an identical-geometry
+// plain fallback for an unknown/absent language, the head/tail height cap and
+// its expand control, and the copy control writing the raw window text on both
+// the accepted and refused clipboard paths.
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
+import { DEFAULT_READ_MAX_LINES, ReadBlock, type ReadBlockLine } from '../src/index.ts'
+import { grammarLoadCount, highlightLines, subscribeGrammarLoaded } from '../src/markdown/highlight.ts'
+
+afterEach(cleanup)
+
+beforeEach(() => {
+  vi.useRealTimers()
+})
+
+/** `count` lines starting at `first`, each with distinct text. */
+function lines(count: number, first = 1): ReadBlockLine[] {
+  return Array.from({ length: count }, (_value, index) => ({ number: first + index, text: `line ${first + index}` }))
+}
+
+/** The rendered rows as `` strings (CSS-module class prefix). */
+function rowTexts(container: HTMLElement): string[] {
+  return [...container.querySelectorAll('[class^="_line_"]')].map(row => row.textContent ?? '')
+}
+
+/** The gutter numbers of the rendered rows, in order. */
+function gutters(container: HTMLElement): string[] {
+  return [...container.querySelectorAll('[class^="_gutter_"]')].map(cell => cell.textContent ?? '')
+}
+
+describe('highlightLines', () => {
+  it('tokenizes a registered grammar into per-line css-variables runs', () => {
+    const result = highlightLines('const x = 1\n// c', 'ts')
+    expect(result).not.toBeUndefined()
+    expect(result).toHaveLength(2)
+    // The keyword run carries a color style through a --shiki-* custom property.
+    const keyword = result![0]!.find(span => span.text === 'const')
+    expect(keyword?.style?.color).toContain('var(--shiki-')
+    // Whitespace between tokens is a run of its own; the comment is line two.
+    expect(result![0]!.map(span => span.text).join('')).toBe('const x = 1')
+    expect(result![1]!.map(span => span.text).join('')).toBe('// c')
+  })
+
+  it('colors every run through a --shiki-* custom property', () => {
+    // The css-variables theme colors even the whitespace run (as the foreground
+    // token), so every run is a styled span; the plain fallback is the whole
+    // unknown-language path, not a per-run one.
+    const result = highlightLines('const x = 1', 'ts')
+    for (const span of result!) for (const run of span) expect(run.style.color).toContain('var(--shiki-')
+  })
+
+  it('drops the trailing terminator line so the run count matches the source lines', () => {
+    // `a\n` tokenizes to two lines in shiki (the second empty); the caller's own
+    // line array has one entry, so the terminator line is dropped.
+    const result = highlightLines('const a = 1\n', 'ts')
+    expect(result).toHaveLength(1)
+  })
+
+  it('keeps a genuinely blank final line when the source ends in two newlines', () => {
+    const result = highlightLines('a\n\n', 'ts')
+    expect(result).toHaveLength(2)
+    expect(result![1]).toEqual([])
+  })
+
+  it('returns undefined for an unknown or absent language', () => {
+    expect(highlightLines('x', 'cobol')).toBeUndefined()
+    expect(highlightLines('x', undefined)).toBeUndefined()
+  })
+
+  it('loads a lazy grammar on first use: plain first, highlighted after it registers', async () => {
+    // A boot grammar (ts) is ready synchronously; a lazy grammar (python) is
+    // not, so the first call renders plain and imports the grammar, and a
+    // subscriber fires once it registers, after which the same call highlights.
+    let notified = 0
+    const stop = subscribeGrammarLoaded(() => { notified += 1 })
+    // First touch: grammar not loaded yet, so plain fallback while it imports.
+    expect(highlightLines('def f(): pass', 'py')).toBeUndefined()
+    // The import + loadLanguageSync resolve on a microtask; wait for the notify.
+    await vi.waitFor(() => { expect(notified).toBeGreaterThan(0) })
+    expect(grammarLoadCount()).toBeGreaterThan(0)
+    const result = highlightLines('def f(): pass', 'py')
+    expect(result).not.toBeUndefined()
+    // `def` is a python keyword and carries a --shiki-* color once highlighted.
+    const keyword = result!.flat().find(span => span.text === 'def')
+    expect(keyword?.style?.color).toContain('var(--shiki-')
+    stop()
+  })
+})
+
+describe('ReadBlock rows', () => {
+  it('renders one gutter-numbered row per line, keeping the file line numbers', () => {
+    const view = render()
+    expect(gutters(view.container)).toEqual(['41', '42', '43'])
+    expect(rowTexts(view.container)).toEqual(['41line 41', '42line 42', '43line 43'])
+  })
+
+  it('highlights the content for a known language into token spans', () => {
+    const view = render(
+      ,
+    )
+    const content = view.container.querySelector('[class^="_content_"]')
+    expect(content?.querySelectorAll('span[style]').length).toBeGreaterThan(1)
+    expect(content?.textContent).toBe('const a = 1')
+  })
+
+  it('renders the content as bare text with no span wrappers for an unknown language', () => {
+    const view = render(
+      ,
+    )
+    const content = view.container.querySelector('[class^="_content_"]')
+    expect(content?.querySelectorAll('span').length).toBe(0)
+    expect(content?.textContent).toBe('IDENT DIVISION.')
+  })
+
+  it('renders bare text when no language is given', () => {
+    const view = render()
+    const content = view.container.querySelector('[class^="_content_"]')
+    expect(content?.querySelectorAll('span').length).toBe(0)
+    expect(view.getByText('plain')).toBeTruthy()
+  })
+})
+
+describe('ReadBlock banner', () => {
+  it('shows the label, the language, and the count note when the read is a window', () => {
+    const view = render()
+    expect(view.getByText('src/a.ts')).toBeTruthy()
+    expect(view.getByText('ts')).toBeTruthy()
+    expect(view.getByText('显示 3 / 180 行')).toBeTruthy()
+  })
+
+  it('omits the count note when the window is the whole file', () => {
+    const view = render()
+    expect(view.queryByText(/显示/u)).toBeNull()
+  })
+
+  it('draws an empty label and empty language when neither is given', () => {
+    const view = render()
+    expect(view.container.querySelector('[class^="_label_"]')?.textContent).toBe('')
+    expect(view.container.querySelector('[class^="_lang_"]')?.textContent).toBe('')
+  })
+})
+
+describe('ReadBlock height cap', () => {
+  it('renders every line and no expand control under the cap', () => {
+    const view = render()
+    expect(rowTexts(view.container)).toHaveLength(4)
+    expect(view.container.querySelector('[aria-expanded]')).toBeNull()
+  })
+
+  it('slices head and tail over the cap and expands on click', () => {
+    const view = render()
+    // maxLines 4: head = ceil(4/2) = 2, tail = 4 - 2 = 2, 6 hidden.
+    expect(gutters(view.container)).toEqual(['1', '2', '9', '10'])
+    const toggle = view.getByRole('button', { name: '展开其余 6 行' })
+    expect(toggle.getAttribute('aria-expanded')).toBe('false')
+    expect(toggle.textContent).toBe('… 其余 6 行')
+
+    fireEvent.click(toggle)
+    expect(rowTexts(view.container)).toHaveLength(10)
+    const collapse = view.getByRole('button', { name: '收起内容' })
+    expect(collapse.getAttribute('aria-expanded')).toBe('true')
+    expect(collapse.textContent).toBe('收起')
+
+    fireEvent.click(collapse)
+    expect(gutters(view.container)).toEqual(['1', '2', '9', '10'])
+  })
+
+  it('renders the head slice alone when the cap leaves no tail', () => {
+    const view = render()
+    expect(gutters(view.container)).toEqual(['1'])
+    expect(view.getByRole('button', { name: '展开其余 4 行' })).toBeTruthy()
+  })
+
+  it('caps at the documented default when maxLines is absent', () => {
+    const view = render(
+      ,
+    )
+    expect(rowTexts(view.container)).toHaveLength(DEFAULT_READ_MAX_LINES)
+    expect(view.getByRole('button', { name: '展开其余 1 行' })).toBeTruthy()
+  })
+})
+
+describe('ReadBlock copy', () => {
+  it('copies the raw window text, joined by newlines, never the gutter numbers', async () => {
+    vi.useFakeTimers()
+    const writeText = vi.fn().mockResolvedValue(undefined)
+    Object.defineProperty(navigator, 'clipboard', { configurable: true, value: { writeText } })
+    render()
+    fireEvent.click(screen.getByRole('button', { name: '复制' }))
+    expect(writeText).toHaveBeenCalledWith('line 41\nline 42\nline 43')
+    await act(async () => {
+      await Promise.resolve()
+    })
+    expect(screen.getByRole('button', { name: '复制成功' })).toBeTruthy()
+    // While the ok label is showing, further clicks are no-ops.
+    fireEvent.click(screen.getByRole('button', { name: '复制成功' }))
+    expect(writeText).toHaveBeenCalledTimes(1)
+    await vi.advanceTimersByTimeAsync(1000)
+    expect(screen.getByRole('button', { name: '复制' })).toBeTruthy()
+  })
+
+  it('copies the whole window while the height cap hides its middle', async () => {
+    const writeText = vi.fn().mockResolvedValue(undefined)
+    Object.defineProperty(navigator, 'clipboard', { configurable: true, value: { writeText } })
+    render()
+    fireEvent.click(screen.getByRole('button', { name: '复制' }))
+    expect(writeText).toHaveBeenCalledWith(lines(10).map(line => line.text).join('\n'))
+    expect(await screen.findByRole('button', { name: '复制成功' })).toBeTruthy()
+  })
+
+  it('does not claim success when the host refuses the write', async () => {
+    Object.defineProperty(navigator, 'clipboard', {
+      configurable: true,
+      value: { writeText: vi.fn().mockRejectedValue(new Error('denied')) },
+    })
+    render()
+    fireEvent.click(screen.getByRole('button', { name: '复制' }))
+    await act(async () => {
+      await Promise.resolve()
+    })
+    expect(screen.getByRole('button', { name: '复制' })).toBeTruthy()
+    expect(screen.queryByRole('button', { name: '复制成功' })).toBeNull()
+  })
+
+  it('merges className onto the wrapper', () => {
+    const view = render()
+    expect(view.container.firstElementChild?.classList.contains('x')).toBe(true)
+  })
+
+  it('hides the copy control for an empty window so it cannot wipe the clipboard', () => {
+    // A successful read of an empty file settles to lines: [] with card:'read',
+    // so this branch is reachable; copying then would clear the clipboard.
+    const view = render()
+    expect(view.queryByRole('button', { name: '复制' })).toBeNull()
+  })
+})
diff --git a/packages/client/ui-primitives/tests/search-block.spec.tsx b/packages/client/ui-primitives/tests/search-block.spec.tsx
new file mode 100644
index 0000000000..29cf87fb91
--- /dev/null
+++ b/packages/client/ui-primitives/tests/search-block.spec.tsx
@@ -0,0 +1,214 @@
+// @vitest-environment jsdom
+// SearchBlock: both kinds (grouped grep matches and a flat glob path list), the
+// folded truncation summary, the empty arm, per-file collapse/expand, the
+// head/tail height cap and its expand control, the tail slice restoring its
+// owning file header, and the copy control writing the whole structured
+// result on both the accepted and refused clipboard paths.
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
+import { DEFAULT_SEARCH_MAX_LINES, SearchBlock } from '../src/index.ts'
+import type { SearchFileGroup } from '../src/index.ts'
+
+afterEach(cleanup)
+
+beforeEach(() => {
+  vi.useRealTimers()
+})
+
+/** The rendered result rows, one string per visible row (CSS-module class prefix). */
+function lines(container: HTMLElement): string[] {
+  return [...container.querySelectorAll('[class^="_line_"]')].map(row => row.textContent ?? '')
+}
+
+/** The file-group header rows, one string per header (path + count concatenated). */
+function fileHeaders(container: HTMLElement): string[] {
+  return [...container.querySelectorAll('[class^="_fileHeader_"]')].map(row => row.textContent ?? '')
+}
+
+/** `count` numbered match lines under one file, without a terminating newline. */
+function group(path: string, count: number, from = 1): SearchFileGroup {
+  return {
+    path,
+    matches: Array.from({ length: count }, (_v, i) => ({ lineNumber: from + i, line: `hit ${from + i}` })),
+  }
+}
+
+describe('SearchBlock matches kind', () => {
+  it('renders each file as a header group with its matched lines', () => {
+    const view = render()
+    expect(fileHeaders(view.container)).toEqual(['a.ts2', 'b.ts1'])
+    expect(lines(view.container)).toEqual(['12: const a = 1', '40: return a', '7: const b = 2'])
+    // The summary counts matches and files, with no folded pre-cap total below the cap.
+    expect(view.getByText('3 处匹配 · 2 个文件')).toBeTruthy()
+    expect(view.queryByText(/显示|共/u)).toBeNull()
+  })
+
+  it('collapses and re-expands a single file group without touching the others', () => {
+    const view = render()
+    const [headerA] = view.container.querySelectorAll('[class^="_fileHeader_"]')
+    expect(headerA!.getAttribute('aria-expanded')).toBe('true')
+    fireEvent.click(headerA!)
+    // a.ts collapsed: its match row is gone, b.ts's stays.
+    expect(headerA!.getAttribute('aria-expanded')).toBe('false')
+    expect(lines(view.container)).toEqual(['2: y'])
+    fireEvent.click(headerA!)
+    expect(lines(view.container)).toEqual(['1: x', '2: y'])
+  })
+
+  it('folds the pre-cap total into the summary when truncated', () => {
+    const view = render()
+    expect(view.getByText('显示 2 / 共 99 处匹配 · 1 个文件')).toBeTruthy()
+  })
+})
+
+describe('SearchBlock paths kind', () => {
+  it('renders a flat path list with a path-count summary', () => {
+    const view = render()
+    expect(lines(view.container)).toEqual(['src/a.ts', 'src/b.ts'])
+    expect(view.getByText('2 个路径')).toBeTruthy()
+    // No file-group headers in the paths shape.
+    expect(fileHeaders(view.container)).toEqual([])
+  })
+
+  it('folds the pre-cap total into the paths summary when truncated', () => {
+    const view = render()
+    expect(view.getByText('显示 2 / 共 50 个路径')).toBeTruthy()
+  })
+})
+
+describe('SearchBlock empty arm', () => {
+  it('shows the placeholder and no copy control for an empty matches result', () => {
+    const view = render()
+    expect(view.getByText('无结果')).toBeTruthy()
+    expect(view.queryByText('复制')).toBeNull()
+    expect(view.getByText('0 处匹配 · 0 个文件')).toBeTruthy()
+  })
+
+  it('shows the placeholder for an empty paths result', () => {
+    const view = render()
+    expect(view.getByText('无结果')).toBeTruthy()
+    expect(view.queryByText('复制')).toBeNull()
+  })
+})
+
+describe('SearchBlock height cap', () => {
+  it('renders every row and no expand control under the cap', () => {
+    const view = render()
+    expect(lines(view.container)).toHaveLength(4)
+    expect(view.container.querySelector('[aria-label^="展开"]')).toBeNull()
+  })
+
+  it('slices head and tail over the cap and expands on click', () => {
+    const paths = Array.from({ length: 10 }, (_v, i) => `p${i + 1}`)
+    const view = render()
+    // maxLines 4: head = ceil(4/2) = 2, tail = 2, 6 hidden.
+    expect(lines(view.container)).toEqual(['p1', 'p2', 'p9', 'p10'])
+    const toggle = view.getByRole('button', { name: '展开其余 6 行结果' })
+    expect(toggle.textContent).toBe('… 其余 6 行')
+    fireEvent.click(toggle)
+    expect(lines(view.container)).toHaveLength(10)
+    const collapse = view.getByRole('button', { name: '收起结果' })
+    expect(collapse.textContent).toBe('收起')
+    fireEvent.click(collapse)
+    expect(lines(view.container)).toEqual(['p1', 'p2', 'p9', 'p10'])
+  })
+
+  it('counts a file header as one capped row alongside its matches', () => {
+    // One file with 10 matches → 11 rows (header + 10). Cap 4: head 2, tail 2.
+    const view = render()
+    // Head takes the header then the first match; tail takes the last two matches.
+    expect(lines(view.container)).toEqual(['1: hit 1', '9: hit 9', '10: hit 10'])
+    expect(fileHeaders(view.container)).toEqual(['a.ts10'])
+    expect(view.getByRole('button', { name: '展开其余 7 行结果' })).toBeTruthy()
+  })
+
+  it('renders the head slice alone when the cap leaves no tail', () => {
+    const view = render()
+    expect(lines(view.container)).toEqual(['a'])
+    expect(view.getByRole('button', { name: '展开其余 4 行结果' })).toBeTruthy()
+  })
+
+  it('restores the owning file header above a tail slice that begins mid-file', () => {
+    // Two files of 10 matches each → 22 rows. Cap 8: head 4 (a.ts header + 3
+    // matches), tail 4. The tail begins mid-b.ts, so its header is restored —
+    // and, being a row itself, it consumes one tail slot rather than pushing the
+    // card to 9 rows: the tail keeps its last 3 matches, total visible = 8.
+    const view = render()
+    expect(fileHeaders(view.container)).toEqual(['a.ts10', 'b.ts10'])
+    expect(lines(view.container)).toEqual([
+      '1: hit 1', '2: hit 2', '3: hit 3',
+      '18: hit 18', '19: hit 19', '20: hit 20',
+    ])
+    // Visible rows hold at maxLines (2 headers + 6 matches = 8), so the hidden
+    // count stays exact: 22 − 8 = 14.
+    expect(view.getByRole('button', { name: '展开其余 14 行结果' })).toBeTruthy()
+  })
+
+  it('caps at the documented default when maxLines is absent', () => {
+    const paths = Array.from({ length: DEFAULT_SEARCH_MAX_LINES + 1 }, (_v, i) => `p${i}`)
+    const view = render()
+    expect(lines(view.container)).toHaveLength(DEFAULT_SEARCH_MAX_LINES)
+    expect(view.getByRole('button', { name: '展开其余 1 行结果' })).toBeTruthy()
+  })
+})
+
+describe('SearchBlock copy', () => {
+  it('copies the whole structured matches result, not the collapsed or capped view', async () => {
+    vi.useFakeTimers()
+    const writeText = vi.fn().mockResolvedValue(undefined)
+    Object.defineProperty(navigator, 'clipboard', { configurable: true, value: { writeText } })
+    const view = render()
+    // Collapse a group and leave the cap in place: the clipboard still gets it all.
+    fireEvent.click(view.container.querySelector('[class^="_fileHeader_"]')!)
+    fireEvent.click(screen.getByRole('button', { name: '复制' }))
+    expect(writeText).toHaveBeenCalledWith('a.ts\n1: x\n2: y\n\nb.ts\n3: z')
+    await act(async () => { await Promise.resolve() })
+    expect(screen.getByRole('button', { name: '复制成功' })).toBeTruthy()
+    // A second click while the ok label shows is a no-op.
+    fireEvent.click(screen.getByRole('button', { name: '复制成功' }))
+    expect(writeText).toHaveBeenCalledTimes(1)
+    await vi.advanceTimersByTimeAsync(1000)
+    expect(screen.getByRole('button', { name: '复制' })).toBeTruthy()
+  })
+
+  it('copies the newline-joined path list for the paths shape', async () => {
+    const writeText = vi.fn().mockResolvedValue(undefined)
+    Object.defineProperty(navigator, 'clipboard', { configurable: true, value: { writeText } })
+    render()
+    fireEvent.click(screen.getByRole('button', { name: '复制' }))
+    expect(writeText).toHaveBeenCalledWith('src/a.ts\nsrc/b.ts')
+    expect(await screen.findByRole('button', { name: '复制成功' })).toBeTruthy()
+  })
+
+  it('does not claim success when the host refuses the write', async () => {
+    Object.defineProperty(navigator, 'clipboard', {
+      configurable: true, value: { writeText: vi.fn().mockRejectedValue(new Error('denied')) },
+    })
+    render()
+    fireEvent.click(screen.getByRole('button', { name: '复制' }))
+    await act(async () => { await Promise.resolve() })
+    expect(screen.getByRole('button', { name: '复制' })).toBeTruthy()
+    expect(screen.queryByRole('button', { name: '复制成功' })).toBeNull()
+  })
+
+  it('merges className onto the wrapper and tags the wrapper with the kind', () => {
+    const view = render()
+    expect(view.container.firstElementChild?.classList.contains('x')).toBe(true)
+    expect(view.container.firstElementChild?.getAttribute('data-search')).toBe('paths')
+  })
+})
diff --git a/packages/client/ui-settings-general/README.i18n.yaml b/packages/client/ui-settings-general/README.i18n.yaml
index c92c2554ec..e96dc8c9d2 100644
--- a/packages/client/ui-settings-general/README.i18n.yaml
+++ b/packages/client/ui-settings-general/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-settings-general/README.md
-README.md: 3e191b501e69062b671df0f237f2128a4ad086d1
-README.zh.md: 44ba3eba8bfc756a7d68e43a3d34056349f7eaaa
+README.md: 4dbd339c93171b330895ab66366e76fd06013704
+README.zh.md: 8ad6de99ce78d3bdb1e7b35e872e5bfe6790e758
diff --git a/packages/client/ui-settings-general/README.md b/packages/client/ui-settings-general/README.md
index 3e191b501e..4dbd339c93 100644
--- a/packages/client/ui-settings-general/README.md
+++ b/packages/client/ui-settings-general/README.md
@@ -4,7 +4,7 @@ English | [中文](README.zh.md)
 
 Settings ownerless-copy and product-onboarding plugin: registers everything on the Settings surface that belongs to no single feature — the shell's trigger/header/close chrome content, the General section and its `settings.general.item` slot, the `settings` dictionaries, and the first ordered welcome step. Feature-owned rows (Permission, Language, Appearance), sections (Models), and conditional onboarding steps stay with their feature packages.
 
-`src/onboarding-copy.ts` is the single editable owner of the complete Chinese and English notice plus `WELCOME_NOTICE_VERSION`. The Host half registers `ui-onboarding` in the user-settings seam; the browser compares `welcomeNoticeVersion` for exact equality and writes the current value only after Continue succeeds. The path mutation is idempotent across tabs and preserves sibling settings, while `host/settings-changed` makes an externally acknowledged notice advance without a reload. A different version deliberately presents the notice again. The welcome page preserves every authored paragraph, gives the requested clause in the final paragraph the sole emphasis, initially focuses the title, and has no close, Escape, mask-click, or secondary path. None of its copy or acknowledgement enters a Session log or model request.
+`src/onboarding-copy.ts` is the single editable owner of the complete notice plus `WELCOME_NOTICE_VERSION`; both supported GUI locales intentionally render the same Chinese copy. The Host half registers `ui-onboarding` in the user-settings seam; the browser compares `welcomeNoticeVersion` for exact equality and writes the current value only after Continue succeeds. The path mutation is idempotent across tabs and preserves sibling settings, while `host/settings-changed` makes an externally acknowledged notice advance without a reload. A different version deliberately presents the notice again. The welcome page preserves every authored paragraph, gives the requested clause in the final paragraph the sole emphasis, initially focuses the title, and has no close, Escape, mask-click, or secondary path. None of its copy or acknowledgement enters a Session log or model request. The notice identifies `DSH_TELEMETRY_DISABLED=1` as the telemetry opt-out.
 
 ## Model Experience
 
diff --git a/packages/client/ui-settings-general/README.zh.md b/packages/client/ui-settings-general/README.zh.md
index 44ba3eba8b..8ad6de99ce 100644
--- a/packages/client/ui-settings-general/README.zh.md
+++ b/packages/client/ui-settings-general/README.zh.md
@@ -4,7 +4,7 @@
 
 设置界面无特定功能归属的文案与产品引导插件：在设置界面注册所有不属于单一功能的内容，包括外壳的触发器、标题栏与关闭控件内容，「通用」分区及其 `settings.general.item` slot、`settings` 字典，以及第一个有序欢迎步骤。归具体功能所有的行（「权限」、「语言」、「外观」）、分区（「模型」）和条件式首次使用引导步骤仍由各自的功能包提供。
 
-`src/onboarding-copy.ts` 是完整中英文通知文案和 `WELCOME_NOTICE_VERSION` 的唯一可编辑来源。宿主端在 user-settings seam 中注册 `ui-onboarding`；浏览器比较 `welcomeNoticeVersion` 是否精确相等，仅在「继续」操作成功后写入当前值。该路径变更在不同标签页间幂等，并会保留同级设置；`host/settings-changed` 则让页面在通知被外部确认后，无需重新加载即可推进。版本不同时，系统会有意重新显示通知。欢迎页保留原文的每个段落，仅强调最后一段中指定的句段，初始焦点落在标题上，并且没有关闭操作、Escape、点击遮罩或次要操作路径。其文案和确认状态均不会进入会话日志或模型请求。
+`src/onboarding-copy.ts` 是完整通知文案和 `WELCOME_NOTICE_VERSION` 的唯一可编辑来源；GUI 支持的两种 locale 都有意渲染同一份中文文案。宿主端在 user-settings seam 中注册 `ui-onboarding`；浏览器比较 `welcomeNoticeVersion` 是否精确相等，仅在「继续」操作成功后写入当前值。该路径变更在不同标签页间幂等，并会保留同级设置；`host/settings-changed` 则让页面在通知被外部确认后，无需重新加载即可推进。版本不同时，系统会有意重新显示通知。欢迎页保留原文的每个段落，仅强调最后一段中指定的句段，初始焦点落在标题上，并且没有关闭操作、Escape、点击遮罩或次要操作路径。其文案和确认状态均不会进入会话日志或模型请求。通知明确以 `DSH_TELEMETRY_DISABLED=1` 作为遥测关闭方式。
 
 ## 模型体验
 
diff --git a/packages/client/ui-settings-general/package.json b/packages/client/ui-settings-general/package.json
index b18e23282d..8f78ce6acb 100644
--- a/packages/client/ui-settings-general/package.json
+++ b/packages/client/ui-settings-general/package.json
@@ -56,6 +56,7 @@
     "@deepseek-ai/dsh-client-connection": "workspace:^",
     "@deepseek-ai/dsh-client-locale": "workspace:^",
     "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:^",
     "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
     "@deepseek-ai/dsh-client-ui-settings": "workspace:^",
     "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
diff --git a/packages/client/ui-settings-general/src/client/WelcomeNotice.module.css b/packages/client/ui-settings-general/src/client/WelcomeNotice.module.css
index 843606605e..a1727b8033 100644
--- a/packages/client/ui-settings-general/src/client/WelcomeNotice.module.css
+++ b/packages/client/ui-settings-general/src/client/WelcomeNotice.module.css
@@ -27,7 +27,6 @@
 }
 
 .opening,
-.status,
 .reflection,
 .feedback,
 .error {
@@ -38,10 +37,6 @@
   margin-top: 30px;
 }
 
-.status {
-  margin-top: 18px;
-}
-
 .reflection {
   margin-top: 36px;
   padding: 0;
@@ -52,7 +47,6 @@
 }
 
 .opening,
-.status,
 .reflection,
 .feedback {
   font-size: 16px;
@@ -90,7 +84,6 @@
 .brand,
 .title,
 .opening,
-.status,
 .reflection,
 .feedback,
 .footer {
@@ -99,10 +92,9 @@
 
 .title { animation-delay: 40ms; }
 .opening { animation-delay: 80ms; }
-.status { animation-delay: 120ms; }
-.reflection { animation-delay: 160ms; }
-.feedback { animation-delay: 200ms; }
-.footer { animation-delay: 240ms; }
+.reflection { animation-delay: 120ms; }
+.feedback { animation-delay: 160ms; }
+.footer { animation-delay: 200ms; }
 
 @keyframes welcome-enter {
   from {
@@ -120,7 +112,6 @@
   .brand,
   .title,
   .opening,
-  .status,
   .reflection,
   .feedback,
   .footer {
diff --git a/packages/client/ui-settings-general/src/client/WelcomeNotice.tsx b/packages/client/ui-settings-general/src/client/WelcomeNotice.tsx
index 32d454e771..0c381e02c9 100644
--- a/packages/client/ui-settings-general/src/client/WelcomeNotice.tsx
+++ b/packages/client/ui-settings-general/src/client/WelcomeNotice.tsx
@@ -66,10 +66,9 @@ export function WelcomeNotice(props: WelcomeNoticeProps): ReactNode {
       
       
{t('welcome.title')}

       
{t('welcome.paragraph.0')}

-      
{t('welcome.paragraph.1')}

-      
{t('welcome.paragraph.2')}

+      
{t('welcome.paragraph.1')}

       

-        {emphasizedFeedback(t('welcome.paragraph.3'), t('welcome.feedbackEmphasis'))}
+        {emphasizedFeedback(t('welcome.paragraph.2'), t('welcome.feedbackEmphasis'))}
       

       {state.error === null ? null : 
{t('welcome.error')}
}
       

diff --git a/packages/client/ui-settings-general/src/client/locales.ts b/packages/client/ui-settings-general/src/client/locales.ts
index e4359b3f10..ef300e8e1f 100644
--- a/packages/client/ui-settings-general/src/client/locales.ts
+++ b/packages/client/ui-settings-general/src/client/locales.ts
@@ -11,7 +11,6 @@ export const zh = {
   'welcome.paragraph.0': WELCOME_NOTICE_COPY.zh.paragraphs[0],
   'welcome.paragraph.1': WELCOME_NOTICE_COPY.zh.paragraphs[1],
   'welcome.paragraph.2': WELCOME_NOTICE_COPY.zh.paragraphs[2],
-  'welcome.paragraph.3': WELCOME_NOTICE_COPY.zh.paragraphs[3],
   'welcome.feedbackEmphasis': WELCOME_NOTICE_COPY.zh.feedbackEmphasis,
   'welcome.continue': WELCOME_NOTICE_COPY.zh.continueLabel,
   'welcome.error': '暂时无法保存确认状态，请重试。',
@@ -30,7 +29,6 @@ export const en = {
   'welcome.paragraph.0': WELCOME_NOTICE_COPY.en.paragraphs[0],
   'welcome.paragraph.1': WELCOME_NOTICE_COPY.en.paragraphs[1],
   'welcome.paragraph.2': WELCOME_NOTICE_COPY.en.paragraphs[2],
-  'welcome.paragraph.3': WELCOME_NOTICE_COPY.en.paragraphs[3],
   'welcome.feedbackEmphasis': WELCOME_NOTICE_COPY.en.feedbackEmphasis,
   'welcome.continue': WELCOME_NOTICE_COPY.en.continueLabel,
   'welcome.error': 'The acknowledgement could not be saved. Please try again.',
diff --git a/packages/client/ui-settings-general/src/onboarding-copy.ts b/packages/client/ui-settings-general/src/onboarding-copy.ts
index edb3249f5a..061fc06872 100644
--- a/packages/client/ui-settings-general/src/onboarding-copy.ts
+++ b/packages/client/ui-settings-general/src/onboarding-copy.ts
@@ -8,30 +8,28 @@ export const WELCOME_NOTICE_ACK_FIELD = 'welcomeNoticeVersion'
  * Bump only when the notice changes materially and every user should see it
  * again. The acknowledgement is compared for exact equality.
  */
-export const WELCOME_NOTICE_VERSION = '2026-07-30.5'
+export const WELCOME_NOTICE_VERSION = '2026-07-30.7'
 
 /** The complete editable welcome notice in both supported GUI locales. */
 export const WELCOME_NOTICE_COPY = {
   zh: {
     title: '内测声明',
     paragraphs: [
-      '感谢您愿意拨冗试用 DeepSeek Harness。',
-      '目前的版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。',
+      '感谢您愿意拨冗试用 DeepSeek Harness。当前版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。',
       '“如切如磋，如琢如磨。” 产品的成长，离不开一次次真实的碰撞与坦诚的反馈。您在真实使用中发现的问题，也可能促使我们重新审视，甚至推翻已有的设计。',
-      '我们尤其希望听见那些失败、困惑与不顺手的时刻——如果您有任何反馈与建议，请在企业微信群中留言告诉我们。每一条反馈，都会帮助我们把它打磨得更好。',
+      '为了帮助我们更准确地还原您真实使用中的问题，内测版本默认会上传所有 Session Log；如需关闭，可以设置环境变量 DSH_TELEMETRY_DISABLED=1。另外，如果您有任何反馈与建议，请在企业微信群中留言告诉我们。每一条反馈，都会帮助我们把它打磨得更好。',
     ],
     feedbackEmphasis: '如果您有任何反馈与建议，请在企业微信群中留言告诉我们',
     continueLabel: '继续',
   },
   en: {
-    title: 'Internal Testing Notice',
+    title: '内测声明',
     paragraphs: [
-      'Thank you for taking the time to try DeepSeek Harness.',
-      'This version is still in internal testing. Its functionality still needs improvement, and the experience may feel a little rough.',
-      '“As one cuts and files, as one chisels and polishes.” A product grows through real encounters and candid feedback. Problems you discover in real use may prompt us to reconsider—or even overturn—our existing designs.',
-      'We especially want to hear about failures, confusion, and friction. If you have any feedback or suggestions, please leave us a message in the company WeChat group. Every piece of feedback helps us refine it.',
+      '感谢您愿意拨冗试用 DeepSeek Harness。当前版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。',
+      '“如切如磋，如琢如磨。” 产品的成长，离不开一次次真实的碰撞与坦诚的反馈。您在真实使用中发现的问题，也可能促使我们重新审视，甚至推翻已有的设计。',
+      '为了帮助我们更准确地还原您真实使用中的问题，内测版本默认会上传所有 Session Log；如需关闭，可以设置环境变量 DSH_TELEMETRY_DISABLED=1。另外，如果您有任何反馈与建议，请在企业微信群中留言告诉我们。每一条反馈，都会帮助我们把它打磨得更好。',
     ],
-    feedbackEmphasis: 'If you have any feedback or suggestions, please leave us a message in the company WeChat group',
-    continueLabel: 'Continue',
+    feedbackEmphasis: '如果您有任何反馈与建议，请在企业微信群中留言告诉我们',
+    continueLabel: '继续',
   },
 } as const
diff --git a/packages/client/ui-settings-general/tests/apply.spec.ts b/packages/client/ui-settings-general/tests/apply.spec.ts
index f8dc983308..81a56a9a4a 100644
--- a/packages/client/ui-settings-general/tests/apply.spec.ts
+++ b/packages/client/ui-settings-general/tests/apply.spec.ts
@@ -4,6 +4,7 @@ import { describe, expect, it, vi } from 'vitest'
 import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
+import { usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-settings-general/client'
 import { CloseLabel, HeaderContent, TriggerContent } from '../src/client/chrome.tsx'
 import { GeneralSection } from '../src/client/GeneralSection.tsx'
@@ -11,6 +12,10 @@ import { WelcomeNotice } from '../src/client/WelcomeNotice.tsx'
 import type { WelcomeNoticeInjected } from '../src/client/WelcomeNotice.tsx'
 import { WELCOME_NOTICE_SETTINGS_NAMESPACE } from '../src/onboarding-copy.ts'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 /** The five seats this plugin fills (slot name → expected component). */
 const SEATS = [
   ['settings.trigger', TriggerContent],
diff --git a/packages/client/ui-settings-general/tests/welcome-notice.spec.tsx b/packages/client/ui-settings-general/tests/welcome-notice.spec.tsx
index 889fa1026d..9ede91859b 100644
--- a/packages/client/ui-settings-general/tests/welcome-notice.spec.tsx
+++ b/packages/client/ui-settings-general/tests/welcome-notice.spec.tsx
@@ -52,6 +52,10 @@ function mount(version?: string, mutateImpl: () => Promise = () => Prom
 }
 
 describe('WelcomeNotice', () => {
+  it('uses the same Chinese owner copy in both GUI locales', () => {
+    expect(WELCOME_NOTICE_COPY.en).toEqual(WELCOME_NOTICE_COPY.zh)
+  })
+
   it('renders the owner copy with one primary action and no dismissal control', async () => {
     const h = mount()
     const page = await screen.findByRole('region', { name: WELCOME_NOTICE_COPY.zh.title })
diff --git a/packages/client/ui-sidebar/tests/sidebar-snapshot.spec.tsx b/packages/client/ui-sidebar/tests/sidebar-snapshot.spec.tsx
index 5755882071..847e6ca6e5 100644
--- a/packages/client/ui-sidebar/tests/sidebar-snapshot.spec.tsx
+++ b/packages/client/ui-sidebar/tests/sidebar-snapshot.spec.tsx
@@ -10,10 +10,14 @@
  */
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, waitFor } from '@testing-library/react'
-import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { SlotTestRuntime, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-sidebar/client'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 afterEach(cleanup)
 
 /**
diff --git a/packages/client/ui-slash/tests/apply.spec.ts b/packages/client/ui-slash/tests/apply.spec.ts
index a0f42c6a22..7121f79441 100644
--- a/packages/client/ui-slash/tests/apply.spec.ts
+++ b/packages/client/ui-slash/tests/apply.spec.ts
@@ -8,11 +8,16 @@
 import { Context } from 'cordis'
 import { describe, expect, it, vi } from 'vitest'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
+import { usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { createScope, scopeOf, SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import type { SessionId } from '@deepseek-ai/dsh-client-runtime/client'
 import { apply, inject, SlashService } from '@deepseek-ai/dsh-client-ui-slash/client'
 import type { MenuViewInjected } from '@deepseek-ai/dsh-client-ui-slash/client'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 const sid = (k: string): SessionId => k as SessionId
 
 async function bench() {
diff --git a/packages/client/ui-theme/package.json b/packages/client/ui-theme/package.json
index e60289b52d..7046f3391b 100644
--- a/packages/client/ui-theme/package.json
+++ b/packages/client/ui-theme/package.json
@@ -44,6 +44,7 @@
   "devDependencies": {
     "@deepseek-ai/dsh-client-locale": "workspace:^",
     "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:^",
     "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
     "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
diff --git a/packages/client/ui-theme/tests/apply.spec.ts b/packages/client/ui-theme/tests/apply.spec.ts
index ea9da5cfde..a4da553516 100644
--- a/packages/client/ui-theme/tests/apply.spec.ts
+++ b/packages/client/ui-theme/tests/apply.spec.ts
@@ -5,11 +5,16 @@ import { Context } from 'cordis'
 import { describe, expect, it } from 'vitest'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
+import { usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { apply, inject, SETTINGS_NS } from '@deepseek-ai/dsh-client-ui-theme/client'
 import type { AppearanceRowInjected, ThemeService } from '@deepseek-ai/dsh-client-ui-theme/client'
 import { AppearanceRow } from '../src/client/AppearanceRow.tsx'
 import type { createAppearanceRowStore } from '../src/client/settings-store.ts'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 const SLOT = 'settings.general.item'
 
 async function bench() {
diff --git a/packages/client/ui-workspace/tests/apply.spec.ts b/packages/client/ui-workspace/tests/apply.spec.ts
index 976bff655f..4c62678f4c 100644
--- a/packages/client/ui-workspace/tests/apply.spec.ts
+++ b/packages/client/ui-workspace/tests/apply.spec.ts
@@ -2,11 +2,16 @@ import { Context } from 'cordis'
 import { describe, expect, it, vi } from 'vitest'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
+import { usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-workspace/client'
 import type { WorkspaceBrowserInjected, WorkspacePickerInjected } from '@deepseek-ai/dsh-client-ui-workspace/client'
 import { WorkspaceBrowser } from '../src/client/WorkspaceBrowser.tsx'
 import { WorkspacePicker } from '../src/client/WorkspacePicker.tsx'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 async function bench() {
   const ctx = new Context()
   await ctx.plugin(SlotsService).await()
diff --git a/packages/client/ui-workspace/tests/rename-assembly.spec.tsx b/packages/client/ui-workspace/tests/rename-assembly.spec.tsx
index 200e3bbd21..44b812532e 100644
--- a/packages/client/ui-workspace/tests/rename-assembly.spec.tsx
+++ b/packages/client/ui-workspace/tests/rename-assembly.spec.tsx
@@ -14,10 +14,14 @@ import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { cleanup, fireEvent, waitFor, within } from '@testing-library/react'
 import type { ISession, SessionId, WorkspaceId } from '@deepseek-ai/dsh-client-runtime/client'
 import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
-import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { SlotTestRuntime, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-workspace/client'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 const SID = 's1' as SessionId
 
 afterEach(cleanup)
diff --git a/packages/compact/compact-basic/README.i18n.yaml b/packages/compact/compact-basic/README.i18n.yaml
index cacf9cb818..2d1e216e49 100644
--- a/packages/compact/compact-basic/README.i18n.yaml
+++ b/packages/compact/compact-basic/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/compact/compact-basic/README.md
-README.md: b2b5bba3ea1426a8210fb4f35b9b79340f324ead
-README.zh.md: be973775ff1be75265cdb9403081620a279c98ed
+README.md: 33a0a47346bed98ed0653d53d424ea7cd25c2a24
+README.zh.md: 603a3104592e7e6acbf54c67ea9616ed9ab8c7cc
diff --git a/packages/compact/compact-basic/README.md b/packages/compact/compact-basic/README.md
index b2b5bba3ea..33a0a47346 100644
--- a/packages/compact/compact-basic/README.md
+++ b/packages/compact/compact-basic/README.md
@@ -140,7 +140,7 @@ Output EXACTLY the Markdown structure below: keep every section, in order. Use t
 - [decisions and their rationale, constraints, user preferences, open questions, data needed to continue]
 
 Rules:
-- Preserve exact file paths, commands, error strings, identifiers, and function signatures.
+- Write concise English engineering prose. Preserve exact file paths, commands, error strings, identifiers, numeric values, function signatures, and syntax fragments.
 - Capture user feedback and explicit instructions faithfully, especially corrections.
 - Do NOT mention this summarization request or that the context was compacted.
 - Output only the checkpoint text: do not call any tool or take any other action.
diff --git a/packages/compact/compact-basic/README.zh.md b/packages/compact/compact-basic/README.zh.md
index be973775ff..603a310459 100644
--- a/packages/compact/compact-basic/README.zh.md
+++ b/packages/compact/compact-basic/README.zh.md
@@ -140,7 +140,7 @@ Output EXACTLY the Markdown structure below: keep every section, in order. Use t
 - [decisions and their rationale, constraints, user preferences, open questions, data needed to continue]
 
 Rules:
-- Preserve exact file paths, commands, error strings, identifiers, and function signatures.
+- Write concise English engineering prose. Preserve exact file paths, commands, error strings, identifiers, numeric values, function signatures, and syntax fragments.
 - Capture user feedback and explicit instructions faithfully, especially corrections.
 - Do NOT mention this summarization request or that the context was compacted.
 - Output only the checkpoint text: do not call any tool or take any other action.
diff --git a/packages/compact/compact-basic/src/summarizer.ts b/packages/compact/compact-basic/src/summarizer.ts
index 3202970c7d..ba3dad5592 100644
--- a/packages/compact/compact-basic/src/summarizer.ts
+++ b/packages/compact/compact-basic/src/summarizer.ts
@@ -58,7 +58,7 @@ const COMPACTION_INSTRUCTION = [
   '- [decisions and their rationale, constraints, user preferences, open questions, data needed to continue]',
   '',
   'Rules:',
-  '- Preserve exact file paths, commands, error strings, identifiers, and function signatures.',
+  '- Write concise English engineering prose. Preserve exact file paths, commands, error strings, identifiers, numeric values, function signatures, and syntax fragments.',
   '- Capture user feedback and explicit instructions faithfully, especially corrections.',
   '- Do NOT mention this summarization request or that the context was compacted.',
   '- Output only the checkpoint text: do not call any tool or take any other action.',
diff --git a/packages/compact/compact-basic/tests/compact-basic.spec.ts b/packages/compact/compact-basic/tests/compact-basic.spec.ts
index 3ea841ee9a..52245bbd5a 100644
--- a/packages/compact/compact-basic/tests/compact-basic.spec.ts
+++ b/packages/compact/compact-basic/tests/compact-basic.spec.ts
@@ -1224,7 +1224,8 @@ describe('default one-shot summarizer', () => {
     expect(messages[0]).toEqual(prefix)
     const last = messages.at(-1)?.content[0]
     const lastText = last?.type === 'text' ? last.text : ''
-    expect(lastText).toContain('Condense the conversation ABOVE')
+    expect(lastText).toContain('Write concise English engineering prose.')
+    expect(lastText).toContain('numeric values, function signatures, and syntax fragments.')
     expect(lastText).toContain('## Primary Request and Intent')
   })
 
diff --git a/packages/compact/compact-basic/tests/compact-loop-repro.spec.ts b/packages/compact/compact-basic/tests/compact-loop-repro.spec.ts
index 4e9c24f667..e6f98817c3 100644
--- a/packages/compact/compact-basic/tests/compact-loop-repro.spec.ts
+++ b/packages/compact/compact-basic/tests/compact-loop-repro.spec.ts
@@ -342,6 +342,11 @@ describe('context-overflow recovery across the real loop and compact-basic', ()
 
         expect(adapter.conversationRequests).toHaveLength(2)
         expect(adapter.summaryRequests).toHaveLength(1)
+        const instruction = adapter.summaryRequests[0]!.messages.at(-1)?.content
+          .map(block => (block.type === 'text' ? block.text : ''))
+          .join('') ?? ''
+        expect(instruction).toContain('Write concise English engineering prose.')
+        expect(instruction).toContain('numeric values, function signatures, and syntax fragments.')
         expect(JSON.stringify(adapter.conversationRequests[0]!.messages)).toContain('OLD HISTORY SENTINEL')
         const retry = JSON.stringify(adapter.conversationRequests[1]!.messages)
         expect(retry).toContain('RECOVERY CHECKPOINT')
diff --git a/packages/cordis/tool-cordis/src/api-catalog.ts b/packages/cordis/tool-cordis/src/api-catalog.ts
index d9513285cc..d0838ce3b4 100644
--- a/packages/cordis/tool-cordis/src/api-catalog.ts
+++ b/packages/cordis/tool-cordis/src/api-catalog.ts
@@ -920,6 +920,10 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
         signature: 'section(section: PromptSection): () => void',
         jsDoc: '/**\n * Register an ordered prompt section in the calling context\'s scope. A scoped\n * section shadows a global section with the same name; duplicates within one\n * layer and non-finite orders throw. Registration and disposal emit\n * `system-prompt/change`.\n * @param section - the section to register.\n * @returns the exact Cordis effect disposer.\n */',
       },
+      {
+        signature: 'context(context: PromptContext): () => void',
+        jsDoc: '/**\n * Register ordered cache-safe dynamic context in the calling context\'s scope.\n * A scoped context shadows a global context with the same name; duplicates\n * within one layer and non-finite orders throw. Registration and disposal\n * emit `system-prompt/change`.\n * @param context - the context contribution to register.\n * @returns the exact Cordis effect disposer.\n */',
+      },
       {
         signature: 'tools(provider: (context: AssembleContext) => ToolProviderResult): () => void',
         jsDoc: '/**\n * Register a tool-schema provider in the calling context\'s scope. Global and\n * matching scoped providers both contribute; returning the reserved\n * {@link TOOL_ORDER_REST} name makes assembly fail.\n * @param provider - evaluated for each assembly with its context.\n * @returns the exact Cordis effect disposer.\n */',
@@ -1450,8 +1454,8 @@ export const EVENT_API: readonly EventApiEntry[] = [
     name: 'system-prompt/assemble',
     mode: 'waterfall',
     signature: '\'system-prompt/assemble\'(this: Scoped, assembly: PromptAssembly, context: AssembleContext, next: () => Promise): Promise',
-    jsDoc: '/**\n * Expert waterfall over the assembled sections, tools, and variables.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): scoped listeners\n * receive only that scope\'s assemblies. The returned value is authoritative.\n * A supplied signal controls only this explicit assembly request and must not\n * be retained to control later turns.\n * @param assembly - the mutable assembly built from registered providers.\n * @param context - the caller\'s per-assembly context.\n * @mode waterfall\n */',
-    summary: 'Expert waterfall over the assembled sections, tools, and variables.',
+    jsDoc: '/**\n * Expert waterfall over the assembled sections, contexts, tools, and variables.\n * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): scoped listeners\n * receive only that scope\'s assemblies. The returned value is authoritative.\n * A supplied signal controls only this explicit assembly request and must not\n * be retained to control later turns.\n * @param assembly - the mutable assembly built from registered providers.\n * @param context - the caller\'s per-assembly context.\n * @mode waterfall\n */',
+    summary: 'Expert waterfall over the assembled sections, contexts, tools, and variables.',
   },
   {
     name: 'system-prompt/change',
@@ -1623,6 +1627,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'AssembleContext',
     declaration: 'export interface AssembleContext {\n    scope?: ScopeKey;\n    signal?: AbortSignal;\n}',
   },
+  {
+    name: 'AssembledContext',
+    declaration: 'export interface AssembledContext {\n    name: string;\n    text: string;\n}',
+  },
   {
     name: 'AssembledSection',
     declaration: 'export interface AssembledSection {\n    name: string;\n    text: string;\n}',
@@ -2093,7 +2101,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'PreparedLlmCall',
-    declaration: 'export interface PreparedLlmCall {\n    readonly config: LlmCallConfig;\n    readonly adapterDefaults: LlmCallConfigAdapterDefaults;\n    stream(options: GenerateOptions): AsyncIterable;\n}',
+    declaration: 'export interface PreparedLlmCall {\n    readonly config: LlmCallConfig;\n    readonly context?: LlmModelContext;\n    readonly adapterDefaults: LlmCallConfigAdapterDefaults;\n    stream(options: GenerateOptions): AsyncIterable;\n}',
   },
   {
     name: 'PreparedReferencedMessage',
@@ -2129,7 +2137,11 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'PromptAssembly',
-    declaration: 'export interface PromptAssembly {\n    sections: AssembledSection[];\n    tools: ToolSchema[];\n    variables: Record;\n}',
+    declaration: 'export interface PromptAssembly {\n    sections: AssembledSection[];\n    contexts: AssembledContext[];\n    tools: ToolSchema[];\n    variables: Record;\n}',
+  },
+  {
+    name: 'PromptContext',
+    declaration: 'export interface PromptContext {\n    readonly name: string;\n    readonly order: number;\n    readonly text: string | ((context: AssembleContext) => string);\n}',
   },
   {
     name: 'PromptSection',
@@ -2239,6 +2251,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'RedactedSecret',
     declaration: 'export interface RedactedSecret {\n    path: string[];\n    set: boolean;\n}',
   },
+  {
+    name: 'RequestContext',
+    declaration: 'export interface RequestContext {\n    provider: string;\n    model: string;\n    contextWindow?: number;\n}',
+  },
   {
     name: 'RequestHeaderReason',
     declaration: 'export type RequestHeaderReason = \'initial\' | \'resume\' | \'change\';',
@@ -2325,7 +2341,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'Session',
-    declaration: 'export class Session {\n    get surface(): SessionSurface;\n    readonly header: SessionHeader;\n    get id(): SessionId;\n    readonly firstLiveSeq: number;\n    constructor(id: SessionId, seed?: readonly SessionEvent[], header?: SessionHeader);\n    get events(): readonly SessionEvent[];\n    get seq(): number;\n    append(type: T, data: SessionEventMap[T], ...opts: T extends SurfaceEventType ? [\n        opts: SurfaceIntent\n    ] : [\n    ]): SessionEvent;\n    requestHeader(): EpochHeader | undefined;\n    deriveMessages(): Message[];\n    deriveEventMessage(event: SessionEvent): Message | null;\n}',
+    declaration: 'export class Session {\n    get surface(): SessionSurface;\n    readonly header: SessionHeader;\n    get id(): SessionId;\n    readonly firstLiveSeq: number;\n    constructor(id: SessionId, seed?: readonly SessionEvent[], header?: SessionHeader);\n    get events(): readonly SessionEvent[];\n    get seq(): number;\n    append(type: T, data: SessionEventMap[T], ...opts: T extends SurfaceEventType ? [\n        opts: SurfaceIntent\n    ] : [\n    ]): SessionEvent;\n    requestHeader(): EpochHeader | undefined;\n    requestContext(): RequestContext | undefined;\n    deriveMessages(): Message[];\n    deriveEventMessage(event: SessionEvent): Message | null;\n}',
   },
   {
     name: 'SessionAvailability',
@@ -2337,7 +2353,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'SessionEventMap',
-    declaration: 'export interface SessionEventMap {\n    \'turn/start\': {\n        turn: number;\n        trigger: TurnTrigger;\n    };\n    \'turn/end\': {\n        turn: number;\n        reason: TurnEndReason;\n    };\n    \'step/start\': {\n        turn: number;\n        step: number;\n    };\n    \'step/end\': {\n        turn: number;\n        step: number;\n    };\n    \'user/message\': UserMessage;\n    \'assistant/chunk\': {\n        turn: number;\n        step: number;\n        chunk: StreamChunk;\n    };\n    \'assistant/message\': {\n        turn: number;\n        step: number;\n        message: AssistantMessage;\n        usage?: TokenUsage;\n    };\n    \'tool/call\': {\n        turn: number;\n        step: number;\n        callId: CallId;\n        name: string;\n        arguments: string;\n    };\n    \'tool/result\': {\n        turn: number;\n        step: number;\n        message: ToolResultMessage;\n        error?: {\n            name: string;\n            code: string;\n        };\n        meta?: JsonValue;\n    };\n    \'steering/message\': {\n        turn: number;\n        message: UserMessage;\n    };\n    \'todo/write\': {\n        todos: TodoItem[];\n    };\n    \'request/header\': {\n        header: EpochHeader;\n        reason: RequestHeaderReason;\n    };\n    \'session/end-seed\': Record;\n}',
+    declaration: 'export interface SessionEventMap {\n    \'turn/start\': {\n        turn: number;\n        trigger: TurnTrigger;\n    };\n    \'turn/end\': {\n        turn: number;\n        reason: TurnEndReason;\n    };\n    \'step/start\': {\n        turn: number;\n        step: number;\n    };\n    \'step/end\': {\n        turn: number;\n        step: number;\n    };\n    \'user/message\': UserMessage;\n    \'assistant/chunk\': {\n        turn: number;\n        step: number;\n        chunk: StreamChunk;\n    };\n    \'assistant/message\': {\n        turn: number;\n        step: number;\n        message: AssistantMessage;\n        usage?: TokenUsage;\n    };\n    \'tool/call\': {\n        turn: number;\n        step: number;\n        callId: CallId;\n        name: string;\n        arguments: string;\n    };\n    \'tool/result\': {\n        turn: number;\n        step: number;\n        message: ToolResultMessage;\n        error?: {\n            name: string;\n            code: string;\n        };\n        meta?: JsonValue;\n    };\n    \'steering/message\': {\n        turn: number;\n        message: UserMessage;\n    };\n    \'todo/write\': {\n        todos: TodoItem[];\n    };\n    \'request/header\': {\n        header: EpochHeader;\n        reason: RequestHeaderReason;\n    };\n    \'request/context\': RequestContext;\n    \'session/end-seed\': Record;\n}',
   },
   {
     name: 'SessionEventMetadataFilter',
diff --git a/packages/core/agent-loop/src/agent.ts b/packages/core/agent-loop/src/agent.ts
index 8f12b29326..8fc9341623 100644
--- a/packages/core/agent-loop/src/agent.ts
+++ b/packages/core/agent-loop/src/agent.ts
@@ -35,6 +35,7 @@ import {
   LlmError,
   assertNever,
   createAssistantMessage,
+  createUserMessage,
   deepFreeze,
   errorChain,
   freezeMessage,
@@ -45,8 +46,8 @@ import {
 } from '@deepseek-ai/dsh-llm'
 import type { GenerateOptions, LlmCallConfig, LlmFailure, Message, PreparedLlmCall, ResolvedRetryPolicy } from '@deepseek-ai/dsh-llm'
 import { canonicalHeader, headerEquals } from '@deepseek-ai/dsh-session'
-import type { AssistantMessage, EpochHeader, Session, SessionId, TurnEndReason, TurnTrigger, UserMessage } from '@deepseek-ai/dsh-session'
-import { renderPrompt } from '@deepseek-ai/dsh-system-prompt'
+import type { AssistantMessage, EpochHeader, RequestContext, Session, SessionId, TurnEndReason, TurnTrigger, UserMessage } from '@deepseek-ai/dsh-session'
+import { renderContextSnapshot, renderPrompt } from '@deepseek-ai/dsh-system-prompt'
 import type {} from '@deepseek-ai/dsh-tools'
 import { executeToolCalls } from './tool-calls.ts'
 
@@ -55,6 +56,47 @@ type StepOutcome =
   | { kind: 'completed'; continueTurn: boolean; concluded: boolean; maxTokens: boolean }
   | { kind: 'request-failed'; error: RequestError; failure: LlmFailure; retryPolicy: ResolvedRetryPolicy | undefined }
 
+const RUNTIME_CONTEXT_SOURCE = '@deepseek-ai/dsh-system-prompt'
+/** Clearing marker kept distinct from every prefixed {@link renderContextSnapshot} result. */
+const CLEARED_RUNTIME_CONTEXT = 'Current runtime context: none. Earlier runtime-context snapshots no longer apply.'
+
+/** Whether one user message is owned by runtime-context materialization. */
+function isRuntimeContextMessage(message: UserMessage): boolean {
+  return message.source.kind === 'plugin' && message.source.plugin === RUNTIME_CONTEXT_SOURCE
+}
+
+/** Latest retained runtime-context snapshot; `found` distinguishes malformed content from absence. */
+function retainedRuntimeContext(session: Session): { found: boolean; text: string | undefined } {
+  const events = session.events
+  const nodes = session.surface.nodes
+  for (let index = nodes.length - 1; index >= 0; index -= 1) {
+    const event = events[nodes[index] as number]
+    if (event?.type !== 'user/message' || !isRuntimeContextMessage(event.data)) continue
+    const [block] = event.data.content
+    return {
+      found: true,
+      text: event.data.content.length === 1 && block?.type === 'text' ? block.text : undefined,
+    }
+  }
+  return { found: false, text: undefined }
+}
+
+/** Append a full current snapshot only when it changed or compaction removed it. */
+function materializeRuntimeContext(session: Session, current: string): void {
+  const previous = retainedRuntimeContext(session)
+  if (!previous.found && current.length === 0) {
+    const compactedPriorSnapshot = session.surface.replaceGeneration > 0
+      && session.events.some(event => event.type === 'user/message' && isRuntimeContextMessage(event.data))
+    if (!compactedPriorSnapshot) return
+  }
+  const snapshot = current.length === 0 ? CLEARED_RUNTIME_CONTEXT : current
+  if (previous.text === snapshot) return
+  session.append('user/message', createUserMessage({
+    content: [{ type: 'text', text: snapshot }],
+    source: { kind: 'plugin', plugin: RUNTIME_CONTEXT_SOURCE },
+  }), { surfaceOp: 'append' })
+}
+
 /** Remove adapter-derived values before plugins propose the next request config. */
 function requestProposal(header: EpochHeader): LlmCallConfig {
   if (header.adapterDefaults === undefined) return header.config
@@ -568,10 +610,13 @@ export class ReactLoopAgent implements Agent {
     // this request together.
     this.drainOutbox(turn)
 
-    // Assemble the system prompt fresh each step (it may depend on log state).
+    // Assemble request-owned prompt inputs fresh each step. Dynamic context is
+    // committed at the tail before deriving history once, preserving the stable
+    // system/history cache prefix while keeping every model-visible byte logged.
     const assembly = await this.loopCtx.systemPrompt.assemble(assembleContextFor(this, signal))
     signal.throwIfAborted()
     const system = renderPrompt(assembly)
+    materializeRuntimeContext(session, renderContextSnapshot(assembly))
 
     // Snapshot the exact log prefix: the reconstruction boundary. Appends
     // after this synchronous snapshot join the next request.
@@ -728,6 +773,24 @@ export class ReactLoopAgent implements Agent {
       session.append('request/header', { header, reason: 'change' })
     }
 
+    // TODO: This looks like code smell.
+    // Context metadata for the route this request resolved to, recorded from the same
+    // registration-bound lookup that prepared the call (no second resolve).
+    // A route with unknown capacity is still recorded so it clears any older
+    // denominator; an unchanged route logs nothing.
+    const contextWindow = preparedCall?.context?.contextWindow
+    const requestContext: RequestContext = {
+      provider: config.provider,
+      model: config.model,
+      ...contextWindow === undefined ? {} : { contextWindow },
+    }
+    const previous = session.requestContext()
+    if (previous?.provider !== requestContext.provider
+      || previous.model !== requestContext.model
+      || previous.contextWindow !== requestContext.contextWindow) {
+      session.append('request/context', requestContext)
+    }
+
     const request = markAgentLoopRequest(deepFreeze({
       ...header.config,
       messages: boundaryMessages,
diff --git a/packages/core/agent-loop/tests/loop.spec.ts b/packages/core/agent-loop/tests/loop.spec.ts
index 20046f766e..a362db8552 100644
--- a/packages/core/agent-loop/tests/loop.spec.ts
+++ b/packages/core/agent-loop/tests/loop.spec.ts
@@ -254,7 +254,7 @@ describe('agent loop', () => {
     // NO system field at all (not an empty string).
     const adapter = new MockAdapter([textResponse('ok')])
     const ctx = await harness(adapter)
-    ctx.on('system-prompt/assemble', async () => ({ sections: [], tools: [], variables: {} }))
+    ctx.on('system-prompt/assemble', async () => ({ sections: [], contexts: [], tools: [], variables: {} }))
     const agent = ctx.agentLoop.create(SessionId('a-no-system'), { provider: 'mock', model: 'mock' })
 
     send(agent, 'hi')
@@ -264,6 +264,178 @@ describe('agent loop', () => {
     expect('system' in adapter.requests[0]!).toBe(false)
   })
 
+  it('materializes changed runtime context at the history tail without rewriting the system header', async () => {
+    const adapter = new MockAdapter([
+      textResponse('one'),
+      textResponse('two'),
+      textResponse('three'),
+      textResponse('four'),
+      textResponse('five'),
+    ])
+    const ctx = await harness(adapter)
+    let mode = 'read-only'
+    const dispose = ctx.systemPrompt.context({ name: 'policy', order: 0, text: () => `Mode: ${mode}.` })
+    const agent = ctx.agentLoop.create(SessionId('a-runtime-context'), { provider: 'mock', model: 'mock' })
+    const contextEvents = () => agent.session.events.flatMap(event =>
+      event.type === 'user/message'
+        && event.data.source.kind === 'plugin'
+        && event.data.source.plugin === '@deepseek-ai/dsh-system-prompt'
+        ? [event]
+        : [])
+
+    send(agent, 'first')
+    await waitForIdle(ctx, agent)
+    expect(contextEvents()).toHaveLength(1)
+    expect(contextEvents()[0]?.data.content).toEqual([{
+      type: 'text',
+      text: 'Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nMode: read-only.',
+    }])
+
+    send(agent, 'unchanged')
+    await waitForIdle(ctx, agent)
+    expect(contextEvents()).toHaveLength(1)
+
+    mode = 'danger-full-access'
+    send(agent, 'changed')
+    await waitForIdle(ctx, agent)
+    expect(contextEvents()).toHaveLength(2)
+    const changedBlock = contextEvents()[1]?.data.content[0]
+    expect(changedBlock?.type).toBe('text')
+    if (changedBlock?.type !== 'text') throw new Error('changed runtime context is not text')
+    expect(changedBlock.text).toContain('danger-full-access')
+
+    dispose()
+    send(agent, 'cleared')
+    await waitForIdle(ctx, agent)
+    expect(contextEvents()).toHaveLength(3)
+    expect(contextEvents()[2]?.data.content).toEqual([{
+      type: 'text',
+      text: 'Current runtime context: none. Earlier runtime-context snapshots no longer apply.',
+    }])
+
+    send(agent, 'still clear')
+    await waitForIdle(ctx, agent)
+    expect(contextEvents()).toHaveLength(3)
+    expect(adapter.requests.map(request => request.system)).toEqual(Array(5).fill(adapter.requests[0]?.system))
+    expect(agent.session.events.filter(event => event.type === 'request/header')).toHaveLength(1)
+  })
+
+  it('re-emits unchanged runtime context when a surface replacement removed the retained snapshot', async () => {
+    const adapter = new MockAdapter([textResponse('one'), textResponse('two')])
+    const ctx = await harness(adapter)
+    ctx.systemPrompt.context({ name: 'policy', order: 0, text: 'Mode: read-only.' })
+    const agent = ctx.agentLoop.create(SessionId('a-runtime-context-compacted'), { provider: 'mock', model: 'mock' })
+
+    send(agent, 'first')
+    await waitForIdle(ctx, agent)
+    const contextEvent = agent.session.events.find(event =>
+      event.type === 'user/message'
+      && event.data.source.kind === 'plugin'
+      && event.data.source.plugin === '@deepseek-ai/dsh-system-prompt')
+    if (contextEvent?.type !== 'user/message') throw new Error('first turn did not materialize runtime context')
+    agent.session.append('user/message', createUserMessage({
+      content: [{ type: 'text', text: 'compacted summary' }],
+      source: { kind: 'plugin', plugin: 'test-compaction' },
+    }), {
+      surfaceOp: { op: 'replace', start: contextEvent.seq, end: contextEvent.seq },
+      sourceEventSeqs: [contextEvent.seq],
+    })
+
+    send(agent, 'after compaction')
+    await waitForIdle(ctx, agent)
+    const runtimeContexts = agent.session.events.flatMap(event =>
+      event.type === 'user/message'
+        && event.data.source.kind === 'plugin'
+        && event.data.source.plugin === '@deepseek-ai/dsh-system-prompt'
+        ? [event]
+        : [])
+    expect(runtimeContexts).toHaveLength(2)
+    expect(adapter.requests[1]?.messages.some(message =>
+      message.source.kind === 'plugin'
+      && message.source.plugin === '@deepseek-ai/dsh-system-prompt')).toBe(true)
+  })
+
+  it('clears compacted runtime context after the active set becomes empty', async () => {
+    const adapter = new MockAdapter([textResponse('one'), textResponse('two')])
+    const ctx = await harness(adapter)
+    const dispose = ctx.systemPrompt.context({ name: 'policy', order: 0, text: 'Mode: read-only.' })
+    const agent = ctx.agentLoop.create(SessionId('a-runtime-context-compacted-clear'), { provider: 'mock', model: 'mock' })
+
+    send(agent, 'first')
+    await waitForIdle(ctx, agent)
+    const contextEvent = agent.session.events.find(event =>
+      event.type === 'user/message'
+      && event.data.source.kind === 'plugin'
+      && event.data.source.plugin === '@deepseek-ai/dsh-system-prompt')
+    if (contextEvent?.type !== 'user/message') throw new Error('first turn did not materialize runtime context')
+    agent.session.append('user/message', createUserMessage({
+      content: [{ type: 'text', text: 'summary retaining old mode: read-only' }],
+      source: { kind: 'plugin', plugin: 'test-compaction' },
+    }), {
+      surfaceOp: { op: 'replace', start: contextEvent.seq, end: contextEvent.seq },
+      sourceEventSeqs: [contextEvent.seq],
+    })
+    dispose()
+
+    send(agent, 'after compaction')
+    await waitForIdle(ctx, agent)
+    const clearing = adapter.requests[1]?.messages.find(message =>
+      message.source.kind === 'plugin'
+      && message.source.plugin === '@deepseek-ai/dsh-system-prompt')
+    expect(clearing?.content).toEqual([{
+      type: 'text',
+      text: 'Current runtime context: none. Earlier runtime-context snapshots no longer apply.',
+    }])
+  })
+
+  it('does not clear runtime context after an unrelated replacement', async () => {
+    const adapter = new MockAdapter([textResponse('ok')])
+    const ctx = await harness(adapter)
+    const agent = ctx.agentLoop.create(SessionId('a-runtime-context-unrelated-compaction'), { provider: 'mock', model: 'mock' })
+    const original = agent.session.append('user/message', createUserMessage({
+      content: [{ type: 'text', text: 'old context' }],
+      source: { kind: 'plugin', plugin: 'test-context' },
+    }), { surfaceOp: 'append' })
+    agent.session.append('user/message', createUserMessage({
+      content: [{ type: 'text', text: 'compacted summary' }],
+      source: { kind: 'plugin', plugin: 'test-compaction' },
+    }), {
+      surfaceOp: { op: 'replace', start: original.seq, end: original.seq },
+      sourceEventSeqs: [original.seq],
+    })
+
+    send(agent, 'after compaction')
+    await waitForIdle(ctx, agent)
+    expect(adapter.requests[0]?.messages.some(message =>
+      message.source.kind === 'plugin'
+      && message.source.plugin === '@deepseek-ai/dsh-system-prompt')).toBe(false)
+  })
+
+  it('replaces a malformed retained runtime-context message with the current complete snapshot', async () => {
+    const adapter = new MockAdapter([textResponse('ok')])
+    const ctx = await harness(adapter)
+    ctx.systemPrompt.context({ name: 'policy', order: 0, text: 'Mode: read-only.' })
+    const agent = ctx.agentLoop.create(SessionId('a-runtime-context-malformed'), { provider: 'mock', model: 'mock' })
+    agent.session.append('user/message', createUserMessage({
+      content: [{ type: 'text', text: 'broken' }, { type: 'text', text: 'snapshot' }],
+      source: { kind: 'plugin', plugin: '@deepseek-ai/dsh-system-prompt' },
+    }), { surfaceOp: 'append' })
+
+    send(agent, 'repair context')
+    await waitForIdle(ctx, agent)
+    const runtimeContexts = agent.session.events.flatMap(event =>
+      event.type === 'user/message'
+        && event.data.source.kind === 'plugin'
+        && event.data.source.plugin === '@deepseek-ai/dsh-system-prompt'
+        ? [event]
+        : [])
+    expect(runtimeContexts).toHaveLength(2)
+    expect(runtimeContexts[1]?.data.content).toEqual([{
+      type: 'text',
+      text: 'Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nMode: read-only.',
+    }])
+  })
+
   it('records raw chunks for replay as assistant/chunk session events', async () => {
     const adapter = new MockAdapter([textResponse('abc')])
     const ctx = await harness(adapter)
diff --git a/packages/core/agent-loop/tests/request-reconstruction.spec.ts b/packages/core/agent-loop/tests/request-reconstruction.spec.ts
index 2fc80c32c1..38398a9c2e 100644
--- a/packages/core/agent-loop/tests/request-reconstruction.spec.ts
+++ b/packages/core/agent-loop/tests/request-reconstruction.spec.ts
@@ -8,7 +8,7 @@
 import { describe, expect, it } from 'vitest'
 import { Context } from 'cordis'
 import LlmService, { createUserMessage, LlmError, ReasoningEffortId  } from '@deepseek-ai/dsh-llm'
-import type { GenerateOptions, LlmModelReasoningInfo, LlmResolvedModelInfo } from '@deepseek-ai/dsh-llm'
+import type { GenerateOptions, LlmModelReasoningInfo, LlmResolvedModelInfo, StreamChunk } from '@deepseek-ai/dsh-llm'
 import SessionStore, { Session, SessionId, foldRequestHeader } from '@deepseek-ai/dsh-session'
 import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
 import ToolRegistry, { defineContentToolFixture } from '@deepseek-ai/dsh-tools'
@@ -614,3 +614,95 @@ describe('request stability across the loop', () => {
     })
   })
 })
+
+describe('request/context capacity records', () => {
+  /** Adapter advertising a per-model capacity, keyed by model id. */
+  function capacityAdapter(windows: Record, script: StreamChunk[][]): MockAdapter {
+    return new class extends MockAdapter {
+      override resolveModel(provider: string, model: string): Promise {
+        const contextWindow = windows[model]
+        return Promise.resolve({
+          provider,
+          id: model,
+          name: model,
+          ...contextWindow === undefined ? {} : { context: { contextWindow } },
+        })
+      }
+    }(script)
+  }
+
+  it('records capacity once and skips it while the route is unchanged', async () => {
+    const adapter = capacityAdapter({ mock: 128_000 }, [textResponse('a'), textResponse('b')])
+    const ctx = await harness(adapter)
+    const agent = ctx.agentLoop.create(SessionId('capacity-dedup'), { provider: 'mock', model: 'mock' })
+
+    send(agent, 'first')
+    await waitForIdle(ctx, agent)
+    send(agent, 'second')
+    await waitForIdle(ctx, agent)
+
+    const records = agent.session.events.filter(event => event.type === 'request/context')
+    expect(records).toHaveLength(1)
+    expect(records[0]?.data).toEqual({ provider: 'mock', model: 'mock', contextWindow: 128_000 })
+    // Log-only: not a SurfaceEventType, so it can never reach a model request
+    // (the type system rejects a surfaceOp here; the session invariant also
+    // requires the record to sit inside its open turn).
+    expect(agent.session.surface.nodes).not.toContain(records[0]?.seq)
+  })
+
+  it('records a second capacity when the route changes mid-session', async () => {
+    const adapter = capacityAdapter(
+      { small: 64_000, large: 256_000 },
+      [textResponse('a'), textResponse('b')],
+    )
+    const ctx = await harness(adapter)
+    const agent = ctx.agentLoop.create(SessionId('capacity-switch'), { provider: 'mock', model: 'small' })
+
+    send(agent, 'first')
+    await waitForIdle(ctx, agent)
+    ctx.on('agent/request', (subject, _turn, _step, _signal, next) => subject === agent
+      ? Promise.resolve({ provider: 'mock', model: 'large' })
+      : next())
+    send(agent, 'second')
+    await waitForIdle(ctx, agent)
+
+    expect(agent.session.events
+      .filter(event => event.type === 'request/context')
+      .map(event => event.data.contextWindow)).toEqual([64_000, 256_000])
+  })
+
+  it('records and deduplicates a route whose adapter advertises no capacity', async () => {
+    const ctx = await harness(new MockAdapter([textResponse('a'), textResponse('b')]))
+    const agent = ctx.agentLoop.create(SessionId('capacity-absent'), { provider: 'mock', model: 'mock' })
+    send(agent, 'first')
+    await waitForIdle(ctx, agent)
+    send(agent, 'second')
+    await waitForIdle(ctx, agent)
+    expect(agent.session.events
+      .filter(event => event.type === 'request/context')
+      .map(event => event.data)).toEqual([{ provider: 'mock', model: 'mock' }])
+  })
+
+  it('clears a previous capacity when the next route advertises none', async () => {
+    const adapter = capacityAdapter({ known: 64_000 }, [textResponse('a'), textResponse('b')])
+    const ctx = await harness(adapter)
+    const agent = ctx.agentLoop.create(SessionId('capacity-clear'), { provider: 'mock', model: 'known' })
+    let model = 'known'
+    ctx.on('agent/request', (subject, _turn, _step, _signal, next) => subject === agent
+      ? Promise.resolve({ provider: 'mock', model })
+      : next())
+
+    send(agent, 'first')
+    await waitForIdle(ctx, agent)
+    model = 'unknown'
+    send(agent, 'second')
+    await waitForIdle(ctx, agent)
+
+    expect(agent.session.events
+      .filter(event => event.type === 'request/context')
+      .map(event => event.data)).toEqual([
+      { provider: 'mock', model: 'known', contextWindow: 64_000 },
+      { provider: 'mock', model: 'unknown' },
+    ])
+  })
+})
diff --git a/packages/core/session/README.i18n.yaml b/packages/core/session/README.i18n.yaml
index 3adbc81cc3..3dc9877266 100644
--- a/packages/core/session/README.i18n.yaml
+++ b/packages/core/session/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/core/session/README.md
-README.md: 132e627387aff54381d10e87a52dc1440d0a5b56
-README.zh.md: edf94f765b81a81dfe39662e967cd6dfdca140fa
+README.md: 9c7d41901e6fb0133fff0e210260e5310a025f75
+README.zh.md: ca1292289901a09b83f9b0a794fa4edc9754b1da
diff --git a/packages/core/session/README.md b/packages/core/session/README.md
index 132e627387..9c7d41901e 100644
--- a/packages/core/session/README.md
+++ b/packages/core/session/README.md
@@ -66,6 +66,8 @@ Providers stream token-sized deltas, so a raw log stores hundreds of `assistant/
 
 `request/header` records a full canonical snapshot of the non-history request envelope with reason `initial`, `resume`, or `change`. Its optional `adapterDefaults` map marks effective `reasoningEffort` or `maxTokens` values materialized by exact-model resolution, allowing the next request proposal to distinguish them from explicit conversation settings. `foldRequestHeader()` selects the latest snapshot; legacy delta events and the removed `fallback` reason are rejected. See the [reconstructable-requests Agent Note](../../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md).
 
+`request/context` records registration-bound metadata for the route a request resolved to, appended inside its step beside `request/header` and only when the provider, model, or capacity differs from the previous record. `session.requestContext()` folds the latest one incrementally, mirroring `requestHeader()`. Capacity stays OUT of `EpochHeader` on purpose: it is adapter metadata describing a route, not an input the request was built from, so it must not enter request reconstruction or header equality — a capacity change is not a header `change`. A route whose adapter advertises no capacity is still recorded with `contextWindow` absent, clearing any older known capacity.
+
 A `user/message` stores the complete `UserMessage` directly, including the identity created before routing or prompt admission. It renders its `content` verbatim whether it is a direct human prompt, a synthetic injection, or an admitted goal round; its typed `source` is the only channel that tells them apart and carries any domain-specific durable facts. `assistant/message`, `tool/result`, and `steering/message` likewise store complete message values. Turn execution remains enclosed by `turn/start` and `turn/end`, while an idle injection may append and flush a `user/message` between turns without running the model.
 
 `tool/result` persists one identified user-role tool-result message, optional internal failure identity, and optional presentation metadata. A tool's successful canonical `value` and human-readable canonical failure message remain execution-local; rendered error content is the replay-authoritative message.
diff --git a/packages/core/session/README.zh.md b/packages/core/session/README.zh.md
index edf94f765b..ca12922899 100644
--- a/packages/core/session/README.zh.md
+++ b/packages/core/session/README.zh.md
@@ -66,6 +66,8 @@
 
 `request/header` 记录非历史请求封装的完整规范快照，其原因为 `initial`、`resume` 或 `change`。其可选 `adapterDefaults` 映射会标记由精确模型解析填入的生效 `reasoningEffort` 或 `maxTokens` 值，使下一次请求提议能够将它们与显式对话设置区分开。`foldRequestHeader()` 选择最新快照；旧版增量事件和已移除的 `fallback` 原因会被拒绝。详见[可重建请求 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md)。
 
+`request/context` 记录请求所解析到的路由的、绑定注册项的元数据，在其所属步骤内紧随 `request/header` 追加，且仅在提供方、模型或容量与上一条记录不同时追加。`session.requestContext()` 以增量方式归并最新一条，与 `requestHeader()` 保持一致。容量刻意不进入 `EpochHeader`：它是描述路由的适配器元数据，不是构建该请求所依据的输入，因此绝不可进入请求重建或请求头相等性判断：容量变化不构成请求头 `change`。适配器不公布容量的路由仍会被记录，但 `contextWindow` 字段缺失，从而清除较早的已知容量。
+
 `user/message` 会直接存储完整的 `UserMessage`，其中包括路由或提示词准入前创建的标识。无论它是直接人类提示词、合成注入，还是已准入的 Goal Round，都会原样呈现其 `content`；带类型的 `source` 是区分三者的唯一通道，并携带各领域专有的持久事实。`assistant/message`、`tool/result` 和 steering（中途引导）对应的 `steering/message` 也会存储完整的消息值。轮次执行仍由 `turn/start` 与 `turn/end` 包围，而空闲注入可以在轮次之间追加并刷新一条 `user/message`，无需运行模型。
 
 `tool/result` 持久保存一条带标识、user-role 的工具结果消息，以及可选内部失败标识和可选呈现元数据。工具成功时的规范 `value` 和便于人类阅读的规范失败消息只存在于执行本地；渲染后的错误内容是回放权威消息。
diff --git a/packages/core/session/src/index.ts b/packages/core/session/src/index.ts
index 88d02b9a6e..8bbf783bc2 100644
--- a/packages/core/session/src/index.ts
+++ b/packages/core/session/src/index.ts
@@ -13,7 +13,7 @@ import { scopeOf, scopeTarget } from '@deepseek-ai/dsh-scope'
 import type { Scoped } from '@deepseek-ai/dsh-scope'
 import type { Message } from '@deepseek-ai/dsh-llm'
 import { SESSION_FORMAT_VERSION, SessionId } from './types.ts'
-import type { CreateSessionOptions, EpochHeader, SessionEvent, SessionEventMap, SessionEventType, SessionHeader, SurfaceIntent, SurfaceEventType } from './types.ts'
+import type { CreateSessionOptions, EpochHeader, RequestContext, SessionEvent, SessionEventMap, SessionEventType, SessionHeader, SurfaceIntent, SurfaceEventType } from './types.ts'
 import { snapshotJsonValue } from './json.ts'
 import { SurfaceManager } from './surface.ts'
 import type { SessionSurface } from './surface.ts'
@@ -606,6 +606,30 @@ export class Session {
     return this.headerFold
   }
 
+  /** Cached fold of the request-context events — see {@link requestContext}. */
+  private contextFold: RequestContext | undefined
+  /** Log position (events consumed) the context fold has reached. */
+  private contextFoldSeq = 0
+
+  /**
+   * The route metadata in force after the log's last `request/context` event —
+   * what the NEXT request deduplicates against — or undefined before any such
+   * record. Maintained incrementally like {@link requestHeader}, so a per-step
+   * read costs O(new events).
+   * @returns the folded context record, or undefined when none exists yet.
+   */
+  requestContext(): RequestContext | undefined {
+    if (this.contextFoldSeq < this.log.length) {
+      for (const event of this.log.slice(this.contextFoldSeq)) {
+        // Frozen for the same reason as the header fold: it is session state
+        // exposed by reference and every later dedup compares against it.
+        if (event.type === 'request/context') this.contextFold = deepFreeze({ ...event.data })
+      }
+      this.contextFoldSeq = this.log.length
+    }
+    return this.contextFold
+  }
+
   /** The derived-message cache: frozen projections, extended per unseen node. */
   private derived: Message[] = []
   /** Surface position (nodes projected) the cache has reached. */
diff --git a/packages/core/session/src/invariant.ts b/packages/core/session/src/invariant.ts
index c454ad6533..0a51c9c6f0 100644
--- a/packages/core/session/src/invariant.ts
+++ b/packages/core/session/src/invariant.ts
@@ -149,6 +149,7 @@ function validateEvent(
       break
     case 'steering/message':
     case 'todo/write':
+    case 'request/context':
     case 'request/header': {
       if (trace.openTurn === null) {
         fail(`${event.type} appended outside any open turn (core execution events must be turn-enclosed)`)
diff --git a/packages/core/session/src/types.ts b/packages/core/session/src/types.ts
index cbfc2d5a41..8818188349 100644
--- a/packages/core/session/src/types.ts
+++ b/packages/core/session/src/types.ts
@@ -172,6 +172,20 @@ export interface EpochHeader {
   tools?: ToolSchema[]
 }
 
+/**
+ * Registration-bound context metadata of one resolved model route. Adapter
+ * metadata about a route rather than a request input, which is why it lives
+ * outside {@link EpochHeader}.
+ */
+export interface RequestContext {
+  /** Registered provider route the metadata was resolved through. */
+  provider: string
+  /** Provider-owned model id the metadata belongs to. */
+  model: string
+  /** Maximum combined request and response context in tokens; absent when the adapter advertises none. */
+  contextWindow?: number
+}
+
 /**
  * Why a `request/header` snapshot was appended: `'initial'` — the log's first
  * header (a new conversation); `'resume'` — a loop instance's first request
@@ -253,6 +267,16 @@ export interface SessionEventMap {
    * It is log-only; the latest snapshot reconstructs the request header.
    */
   'request/header': { header: EpochHeader; reason: RequestHeaderReason }
+  /**
+   * Registration-bound context metadata for the route a request resolved to,
+   * appended inside its step beside `request/header` and only when the route
+   * or capacity differs from the last record. It is log-only and deliberately
+   * NOT part of {@link EpochHeader}: capacity is adapter metadata about a
+   * route, not an input the request was built from, so it must not participate
+   * in request reconstruction or header equality. `contextWindow` is absent
+   * when the route's adapter advertises no capacity.
+   */
+  'request/context': RequestContext
   /**
    * Marks the end of a constructor seed. Events before it have smaller seq
    * values and came from the seed (resume, fork, or replay); this lifecycle
diff --git a/packages/core/session/tests/invariant.spec.ts b/packages/core/session/tests/invariant.spec.ts
index 5e075f1749..83cdd29e15 100644
--- a/packages/core/session/tests/invariant.spec.ts
+++ b/packages/core/session/tests/invariant.spec.ts
@@ -144,6 +144,12 @@ describe('session-log invariants', () => {
         source: { kind: 'user' },
       }),
     }, { surfaceOp: 'append' })).toThrow(/outside any open turn/)
+    // Route capacity is core execution state like the header beside it.
+    expect(() => outside.append('request/context', {
+      provider: 'mock',
+      model: 'm',
+      contextWindow: 128_000,
+    })).toThrow(/outside any open turn/)
     // The owning plugin decides whether a merge-extensible event is log-only.
     const appendUnknown = outside.append.bind(outside) as (type: string, data: unknown) => unknown
     expect(() => { appendUnknown('plugin/marker', {}) }).not.toThrow()
diff --git a/packages/core/session/tests/request-header.spec.ts b/packages/core/session/tests/request-header.spec.ts
index 373fb2a127..cd286aa133 100644
--- a/packages/core/session/tests/request-header.spec.ts
+++ b/packages/core/session/tests/request-header.spec.ts
@@ -114,3 +114,60 @@ describe('legacy request-header format', () => {
     expect(session.events).toHaveLength(0)
   })
 })
+
+describe('Session.requestContext', () => {
+  const CAPACITY = { provider: 'mock', model: 'm', contextWindow: 128_000 }
+
+  /** A turn-enclosed capacity record; the invariant rejects one outside a turn. */
+  function seedWith(...records: { provider: string; model: string; contextWindow?: number }[]): SessionEvent[] {
+    const events: SessionEvent[] = [{
+      type: 'turn/start', seq: 0, time: 1, data: { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } },
+    }]
+    for (const data of records) {
+      events.push({ type: 'request/context', seq: events.length, time: 1, data })
+    }
+    return events
+  }
+
+  it('reads undefined before any record exists', () => {
+    expect(new Session(SessionId('no-capacity')).requestContext()).toBeUndefined()
+  })
+
+  it('folds a seeded log on first read, taking the last record', () => {
+    // The fold watermark starts at 0 with the seed already in the log, so the
+    // first read must consume the whole seed rather than skip it.
+    const session = new Session(SessionId('seeded-capacity'), seedWith(
+      CAPACITY,
+      { ...CAPACITY, model: 'later', contextWindow: 256_000 },
+    ))
+    expect(session.requestContext()).toEqual({ provider: 'mock', model: 'later', contextWindow: 256_000 })
+  })
+
+  it('advances incrementally across appends and skips unrelated events', () => {
+    const session = new Session(SessionId('incremental-capacity'), seedWith(CAPACITY))
+    expect(session.requestContext()).toEqual(CAPACITY)
+    session.append('todo/write', { todos: [] })
+    expect(session.requestContext()).toEqual(CAPACITY)
+    session.append('request/context', { ...CAPACITY, model: 'next', contextWindow: 64_000 })
+    expect(session.requestContext()).toEqual({ provider: 'mock', model: 'next', contextWindow: 64_000 })
+    session.append('request/context', { provider: 'mock', model: 'unknown' })
+    expect(session.requestContext()).toEqual({ provider: 'mock', model: 'unknown' })
+  })
+
+  it('folds a batch appended between two reads', () => {
+    const session = new Session(SessionId('batched-capacity'), seedWith(CAPACITY))
+    expect(session.requestContext()).toEqual(CAPACITY)
+    session.append('request/context', { ...CAPACITY, contextWindow: 200_000 })
+    session.append('todo/write', { todos: [] })
+    session.append('request/context', { ...CAPACITY, contextWindow: 300_000 })
+    expect(session.requestContext()?.contextWindow).toBe(300_000)
+  })
+
+  it('exposes a frozen record so a reader cannot desync later comparisons', () => {
+    const session = new Session(SessionId('frozen-capacity'), seedWith(CAPACITY))
+    const held = session.requestContext()
+    if (held === undefined) throw new Error('expected a folded capacity record')
+    expect(Object.isFrozen(held)).toBe(true)
+    expect(() => { (held as { contextWindow?: number }).contextWindow = 1 }).toThrow()
+  })
+})
diff --git a/packages/core/system-prompt/README.i18n.yaml b/packages/core/system-prompt/README.i18n.yaml
index bfb456b4bd..a3937c24ec 100644
--- a/packages/core/system-prompt/README.i18n.yaml
+++ b/packages/core/system-prompt/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/core/system-prompt/README.md
-README.md: 23bc0e8177ad2a778df9522e254bfd5e03a9871f
-README.zh.md: 1fd4febc1c15acda19e7abfca94079b9585c1972
+README.md: d4e0f69323b7326fc7575834bf48a5aeeec0777e
+README.zh.md: 47290335d725083fc46ef4f2ee09b09263276788
diff --git a/packages/core/system-prompt/README.md b/packages/core/system-prompt/README.md
index 23bc0e8177..d4e0f69323 100644
--- a/packages/core/system-prompt/README.md
+++ b/packages/core/system-prompt/README.md
@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-System prompt assembly registry. Plugins contribute ordered sections, tool schemas, and named variables. The loop assembles once per step and renders the result as the complete model prompt. This plugin owns the static harness identity and global deployment persona; an agent-scoped persona shadows the global default.
+Model-input assembly registry. Plugins contribute ordered stable system sections, cache-safe dynamic context, tool schemas, and named variables. The loop assembles once per step, renders stable sections as the system prompt, and appends a durable full dynamic-context snapshot only when its text changes or compaction removed the retained snapshot. This plugin owns the static harness identity and global deployment persona; an agent-scoped persona shadows the global default.
 
 ## Config
 
@@ -17,6 +17,7 @@ System prompt assembly registry. Plugins contribute ordered sections, tool schem
 ### Public API
 
 - `ctx.systemPrompt.section(section: PromptSection): () => void` Contribute a section. The layer is the calling context's scope: `agent.ctx` contributes to that agent alone, shadowing a same-named global section there. Duplicate names within one layer and non-finite orders throw. Disposed with the calling fiber.
+- `ctx.systemPrompt.context(context: PromptContext): () => void` Contribute cache-safe dynamic model context. Contexts are ordered independently from system sections; scoped contributions shadow same-named globals. The agent loop materializes the complete current set as one sourced user-role snapshot after retained history, only when changed or missing. Duplicate names within one layer and non-finite orders throw. Disposed with the calling fiber.
 - `ctx.systemPrompt.tools(provider: (context: AssembleContext) => ToolProviderResult): () => void` Contribute tool schemas, evaluated at each assembly with that assembly's context. `ToolProviderResult` = `{ schemas, knownNames? }`: `schemas` is the post-restriction visible set; `knownNames` is the pre-restriction universe used by `toolOrder`. A provider must not return a schema named `TOOL_ORDER_REST`. Scoped providers are consulted only for their scope's assemblies. Disposed with the calling fiber.
 - `ctx.systemPrompt.variable(name: string, provider: (context) => string | undefined): () => void` Contribute a prompt variable, referenced from section text as `{{name}}`. Scoped variables shadow a same-named global for that agent. Duplicate-in-layer or unreferenceable names throw; `undefined` means "no value for this assembly". Disposed with the calling fiber.
 - `ctx.systemPrompt.assemble(context?: AssembleContext): Promise` Assemble the prompt for one caller: the global layer merged with `context.scope`'s layer, with tool schemas detached before the transform seam. Runs through the scope-filtered `system-prompt/assemble` waterfall and returns its authoritative result. An optional `context.signal` explicitly controls this assembly request; providers and listeners may cooperate with it but must not retain it for another turn. Rejects when a configured `toolOrder` names a tool outside the providers' `knownNames` universe, or when a provider returns the reserved rest-entry name.
@@ -29,14 +30,17 @@ System prompt assembly registry. Plugins contribute ordered sections, tool schem
 
 - `AssembleContext` — what one `assemble()` call is FOR. Merge-extensible; declares `scope?: ScopeKey` (the layer selector) and `signal?: AbortSignal` (the explicit request control capability) here, while `dsh-agent` declares `agent?: Agent` (the typed DX field — never set without `scope`; use `assembleContextFor(agent, signal)`). Providers must tolerate absent fields because a bare `assemble()` carries an empty, scope-less, signal-less context. `signal` is a request value, not part of the ambient Agent execution frame.
 - `PromptSection` — `{ name, order, text }`. Sections are concatenated in ascending `order`. Order bands: `-100` is the harness identity, `0` the deployment persona, tool guidance uses `100–199`.
-- `PromptAssembly` — `{ sections: AssembledSection[], tools: ToolSchema[], variables: Record }`. Section texts arrive resolved but not yet interpolated; `variables` holds every registered variable resolved against the context. Tool schemas are part of the assembly by design: "what the model is told it can do" is one coherent thing, even though adapters transmit schemas as a separate wire field.
+- `PromptContext` — `{ name, order, text }`. Contexts carry changing current facts that must not rewrite the cached system/history prefix; they use the same per-assembly provider and strict-variable contracts as sections.
+- `PromptAssembly` — `{ sections: AssembledSection[], contexts: AssembledContext[], tools: ToolSchema[], variables: Record }`. Section and context texts arrive resolved but not yet interpolated; `variables` holds every registered variable resolved against the context. Tool schemas are part of the assembly by design: "what the model is told it can do" is one coherent thing, even though adapters transmit schemas as a separate wire field.
 - `renderPrompt(assembly)` — interpolates `{{variable}}` references in each section, drops empty sections, joins with blank lines. STRICT: an unknown reference (`Object.hasOwn` lookup — prototype names like `{{constructor}}` are unknown), a registered-but-valueless reference, a malformed complete `{{…}}` group, or a `{{` that opens no complete group while a `}}` still follows (`{{{model}}}`) throws — fail loud beats shipping a malformed prompt. A lone `{{` with no `}}` anywhere after it passes through verbatim; substituted values are never re-scanned.
+- `renderContextSnapshot(assembly)` — applies the same strict interpolation to contexts, drops empty entries, and emits one full snapshot with an explicit supersession statement. An empty active set returns `''`; the loop emits one clearing snapshot when previously visible context disappears.
 
 Merge-extensible: plugins can declare extra fields on `PromptAssembly` and `AssembleContext` via declaration merging.
 
 ### Extension points
 
 - Section providers: tool packages own their cross-call guidance (`tool:bash`, `tool:read`, …); this plugin owns `harness:identity` and `deployment:persona`.
+- Context providers: policy and other changing-state owners contribute complete current facts without mutating the stable system prompt.
 - Variable providers: the agent loop registers `model` and `cwd`; any plugin can register the facts it owns (a future `date`, git state, …).
 - Tool schema providers: `ToolRegistry` registers itself as a tool provider automatically.
 - The [`system-prompt/assemble` waterfall](#live-events): cooperatively mutate or replace the assembly per caller.
@@ -65,6 +69,20 @@ Identity is a fixed per-request cost when enabled. Persona and plugin text are r
 
 Prefix-stable while identity, persona, variables, section text, and order render identically. Any change may invalidate reuse from the first changed system-prompt token.
 
+### Dynamic runtime context
+
+#### What the model sees
+
+Active contexts are joined in deterministic order after strict interpolation and logged as one sourced user-role message immediately before the request that first needs that snapshot. The message begins `Current runtime context. This snapshot supersedes earlier runtime-context snapshots.` A changed snapshot is appended after retained history; an unchanged retained snapshot adds nothing. If compaction removes it, the current full snapshot is emitted again. Removing the last context emits one explicit clearing snapshot.
+
+#### Token effect
+
+One concise message on the first request, on an effective context change, after compaction removed the retained snapshot, or when the active set becomes empty. Unchanged steps add no duplicate tokens.
+
+#### KV Cache effect
+
+Append-only after retained history. A context change preserves the previously cached system and conversation prefix instead of rewriting the first wire message.
+
 ### Tool schemas
 
 #### What the model sees
diff --git a/packages/core/system-prompt/README.zh.md b/packages/core/system-prompt/README.zh.md
index 1fd4febc1c..47290335d7 100644
--- a/packages/core/system-prompt/README.zh.md
+++ b/packages/core/system-prompt/README.zh.md
@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-系统提示词组装注册表。插件贡献有序段、工具 schema 和具名变量。循环在每个步骤组装一次，并将结果渲染为完整的模型提示词。此插件拥有静态 harness 身份和全局部署 persona；agent（智能体）作用域的 persona 会遮蔽全局默认值。
+模型输入组装注册表。插件贡献有序且稳定的系统段、缓存安全的动态上下文、工具 schema 和具名变量。循环在每个步骤组装一次，将稳定段渲染为系统提示词，并且仅在文本变化或压缩（compaction）移除了保留的快照时，追加一份持久的完整动态上下文快照。此插件拥有静态 harness 身份和全局部署 persona；agent（智能体）作用域的 persona 会遮蔽全局默认值。
 
 ## 配置
 
@@ -17,6 +17,7 @@
 ### 公开 API
 
 - `ctx.systemPrompt.section(section: PromptSection): () => void`：贡献一个段。层由调用上下文的作用域决定：`agent.ctx` 只为该 agent 贡献，并在该处遮蔽同名全局段。同一层中的重复名称和非有限顺序会抛出。随调用 fiber 一并 dispose（资源释放）。
+- `ctx.systemPrompt.context(context: PromptContext): () => void`：贡献缓存安全的动态模型上下文。上下文与系统段分别排序；带作用域的贡献会遮蔽同名全局项。仅在完整当前集合变化或缺失时，agent loop（智能体循环）会在保留的历史后将其具体化为一份带来源的 user 角色快照。同一层中的重复名称和非有限顺序会抛出。随调用 fiber 一并 dispose。
 - `ctx.systemPrompt.tools(provider: (context: AssembleContext) => ToolProviderResult): () => void`：贡献工具 schema；每次组装时使用该次组装的上下文求值。`ToolProviderResult` = `{ schemas, knownNames? }`：`schemas` 是限制后的可见集合；`knownNames` 是限制前由 `toolOrder` 使用的全集。提供方不得返回名为 `TOOL_ORDER_REST` 的 schema。带作用域提供方只在其作用域的组装中查询。随调用 fiber 一并 dispose。
 - `ctx.systemPrompt.variable(name: string, provider: (context) => string | undefined): () => void`：贡献提示词变量，在段文本中以 `{{name}}` 引用。带作用域变量会为该 agent 遮蔽同名全局变量。同层重复或无法引用的名称会抛出；`undefined` 表示「本次组装没有值」。随调用 fiber 一并 dispose。
 - `ctx.systemPrompt.assemble(context?: AssembleContext): Promise`：为一个调用方组装提示词：将全局层与 `context.scope` 的层合并，并在变换 seam 前分离工具 schema。它经过按作用域筛选的 `system-prompt/assemble` waterfall，并返回其权威结果。可选的 `context.signal` 显式控制本次组装请求；提供方与监听器可以配合该信号，但不得将它保留给另一轮次。当已配置的 `toolOrder` 指名提供方 `knownNames` 全集以外的工具，或提供方返回保留的其余项名称时，调用会被拒绝。
@@ -29,15 +30,18 @@
 
 - `AssembleContext`：说明一次 `assemble()` 调用的用途。它可通过合并扩展；此处声明 `scope?: ScopeKey`（层选择器）与 `signal?: AbortSignal`（显式请求控制能力），而 `dsh-agent` 声明 `agent?: Agent`（类型化 DX 字段；绝不能在没有 `scope` 时设置，应使用 `assembleContextFor(agent, signal)`）。提供方必须容忍字段缺席，因为裸 `assemble()` 携带的是无作用域、无信号的空上下文。`signal` 是请求值，不是环境 Agent 执行 frame 的一部分。
 - `PromptSection`：`{ name, order, text }`。各段按 `order` 升序拼接。顺序区间：`-100` 是 harness 身份，`0` 是部署 persona，工具引导使用 `100–199`。
-- `PromptAssembly`：`{ sections: AssembledSection[], tools: ToolSchema[], variables: Record }`。段文本到达时已解析，但尚未插值；`variables` 包含对上下文解析后的每个已注册变量。工具 schema 按设计属于组装结果：「模型获知自己能做什么」是一个连贯整体，尽管适配器把 schema 作为独立 wire 字段传输。
+- `PromptContext`：`{ name, order, text }`。上下文承载不断变化的当前事实，这些事实不能改写已缓存的系统／历史前缀；上下文与段使用相同的逐组装提供方契约和严格变量契约。
+- `PromptAssembly`：`{ sections: AssembledSection[], contexts: AssembledContext[], tools: ToolSchema[], variables: Record }`。段与上下文文本到达时已解析，但尚未插值；`variables` 包含对上下文解析后的每个已注册变量。工具 schema 按设计属于组装结果：「模型获知自己能做什么」是一个连贯整体，尽管适配器把 schema 作为独立 wire 字段传输。
 - `renderPrompt(assembly)`：插值每个段中的 `{{variable}}` 引用，删除空段，并用空行连接。严格规则：未知引用（使用 `Object.hasOwn` 查找，因此 `{{constructor}}` 等原型名称未知）、已注册但无值的引用、格式错误的完整 `{{…}}` 组，或一个起始 `{{` 没有打开完整组、但后面仍有 `}}`（`{{{model}}}`），都会抛出；明确失败胜过交付格式错误的提示词。孤立的 `{{` 如果后面任何位置都没有 `}}`，会按字面量通过；替换值绝不再次扫描。
+- `renderContextSnapshot(assembly)`：对上下文执行同样严格的插值，删除空条目，并发出一份带显式取代声明的完整快照。活动集合为空时返回 `''`；先前可见的上下文消失时，循环会发出一份清除快照。
 
 可通过合并扩展：插件可以借助声明合并，为 `PromptAssembly` 和 `AssembleContext` 声明额外字段。
 
 ### 扩展点
 
 - 段提供方：工具包（package）拥有跨调用引导（`tool:bash`、`tool:read` 等）；此插件拥有 `harness:identity` 与 `deployment:persona`。
-- 变量提供方：agent loop（智能体循环）注册 `model` 与 `cwd`；任何插件都可以注册自己拥有的事实（未来的 `date`、git 状态等）。
+- 上下文提供方：策略及其他变化状态的归属方贡献完整的当前事实，而不改变稳定的系统提示词。
+- 变量提供方：agent loop 注册 `model` 与 `cwd`；任何插件都可以注册自己拥有的事实（未来的 `date`、git 状态等）。
 - 工具 schema 提供方：`ToolRegistry` 自动将自身注册为工具提供方。
 - [`system-prompt/assemble` waterfall](#live-events)：按调用方协作式修改或替换组装结果。
 
@@ -65,6 +69,20 @@ You are an AI agent powered by the DeepSeek Harness SDK.
 
 只要身份、persona、变量、段文本与顺序的渲染完全相同，前缀就保持稳定。任何变更都可能从第一个变化的系统提示词 token 起使复用失效。
 
+### 动态运行时上下文
+
+#### 模型看到的内容
+
+活动上下文经过严格插值后按确定顺序连接，并在首次需要该快照的请求之前立即记录为一条带来源的 user 角色消息。消息以 `Current runtime context. This snapshot supersedes earlier runtime-context snapshots.` 开头。变化后的快照会追加到保留的历史之后；保留的快照未变时不会增加内容。如果压缩移除了它，当前完整快照会再次发出。移除最后一项上下文时会发出一份显式清除快照。
+
+#### Token 影响
+
+首次请求、上下文实际变化、压缩移除保留的快照或活动集合变空时，会增加一条简洁消息。未变化的步骤不会增加重复 token。
+
+#### KV Cache 影响
+
+在保留的历史之后仅追加。上下文变化会保留先前缓存的系统与对话前缀，而不会改写第一条 wire 消息。
+
 ### 工具 schema
 
 #### 模型看到的内容
diff --git a/packages/core/system-prompt/src/index.ts b/packages/core/system-prompt/src/index.ts
index 2e4e5e65b7..2e07fcfff2 100644
--- a/packages/core/system-prompt/src/index.ts
+++ b/packages/core/system-prompt/src/index.ts
@@ -1,5 +1,5 @@
 /**
- * Registry for ordered prompt sections, tool schemas, and prompt variables.
+ * Registry for ordered system sections, cache-safe context, tool schemas, and prompt variables.
  *
  * @module @deepseek-ai/dsh-system-prompt
  */
@@ -17,7 +17,7 @@ declare module 'cordis' {
 
   interface Events {
     /**
-     * Expert waterfall over the assembled sections, tools, and variables.
+     * Expert waterfall over the assembled sections, contexts, tools, and variables.
      * Scope-filtered dispatch (`@deepseek-ai/dsh-scope`): scoped listeners
      * receive only that scope's assemblies. The returned value is authoritative.
      * A supplied signal controls only this explicit assembly request and must not
@@ -65,6 +65,20 @@ export interface PromptSection {
   readonly text: string | ((context: AssembleContext) => string)
 }
 
+/**
+ * One dynamic model-context contribution. Unlike a {@link PromptSection}, its
+ * rendered text is materialized as a durable user-role snapshot at the request
+ * tail, so changing runtime state preserves the stable system/history prefix.
+ */
+export interface PromptContext {
+  /** Unique name — a duplicate registration throws (see {@link SystemPrompt.context}). */
+  readonly name: string
+  /** Contexts are joined in ascending order, independently of system-section order. */
+  readonly order: number
+  /** Static text or a provider evaluated for each assembly. Empty text contributes nothing. */
+  readonly text: string | ((context: AssembleContext) => string)
+}
+
 /** One section of an assembly: {@link PromptSection} with its text resolved. */
 export interface AssembledSection {
   /** The contributing section's unique name. */
@@ -73,6 +87,14 @@ export interface AssembledSection {
   text: string
 }
 
+/** One dynamic context contribution with its text resolved. */
+export interface AssembledContext {
+  /** The contributing context's unique name. */
+  name: string
+  /** The resolved (but not yet interpolated) context text. */
+  text: string
+}
+
 /** Tool schemas visible in one assembly and their pre-restriction name set. */
 export interface ToolProviderResult {
   /** The schemas this provider contributes to THIS assembly. */
@@ -82,11 +104,13 @@ export interface ToolProviderResult {
 }
 
 /**
- * Merge-extensible assembled prompt. Sections remain uninterpolated until
- * {@link renderPrompt}; tools are already in canonical model-facing order.
+ * Merge-extensible assembled model input. Sections and contexts remain
+ * uninterpolated until their renderers; tools are already in canonical
+ * model-facing order.
  */
 export interface PromptAssembly {
   sections: AssembledSection[]
+  contexts: AssembledContext[]
   tools: ToolSchema[]
   variables: Record
 }
@@ -170,14 +194,35 @@ export interface Config {
  */
 export function renderPrompt(assembly: PromptAssembly): string {
   return assembly.sections
-    .map(section => interpolate(section, assembly.variables))
+    .map(section => interpolate(section, assembly.variables, 'section'))
     .filter(text => text.length > 0)
     .join('\n\n')
 }
 
-/** Interpolate one section's `{{variable}}` references (see {@link renderPrompt}). */
-function interpolate(section: AssembledSection, variables: Record): string {
-  const text = section.text
+/**
+ * Render the complete current dynamic context snapshot. The agent loop appends
+ * a new durable snapshot only when this text changes or is no longer retained
+ * after compaction; the explicit supersession clause makes older snapshots in
+ * history harmless.
+ * @param assembly - the assembly whose contexts and variables to render.
+ * @returns the current full snapshot, or `''` when no context is active.
+ */
+export function renderContextSnapshot(assembly: PromptAssembly): string {
+  const body = assembly.contexts
+    .map(context => interpolate(context, assembly.variables, 'context'))
+    .filter(text => text.length > 0)
+    .join('\n\n')
+  if (body.length === 0) return ''
+  return `Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\n${body}`
+}
+
+/** Interpolate one section or context and attribute diagnostics to its owning input. */
+function interpolate(
+  input: AssembledSection | AssembledContext,
+  variables: Record,
+  kind: 'section' | 'context',
+): string {
+  const text = input.text
   let result = ''
   let last = 0
   for (let open = text.indexOf('{{'); open >= 0; open = text.indexOf('{{', last)) {
@@ -185,7 +230,7 @@ function interpolate(section: AssembledSection, variables: Record= 0) {
-        throw new Error(`malformed prompt variable reference at "${text.slice(open, open + 16)}…" in section "${section.name}" (references are complete simple {{name}} groups)`)
+        throw new Error(`malformed prompt variable reference at "${text.slice(open, open + 16)}…" in ${kind} "${input.name}" (references are complete simple {{name}} groups)`)
       }
       result += text.slice(last, open + 2)
       last = open + 2
@@ -194,16 +239,16 @@ function interpolate(section: AssembledSection, variables: Record 0 ? known.join(', ') : '(none)'}`)
+      throw new Error(`unknown prompt variable "{{${name}}}" in ${kind} "${input.name}"; registered variables: ${known.length > 0 ? known.join(', ') : '(none)'}`)
     }
     const value = variables[name]
     if (value === undefined) {
-      throw new Error(`prompt variable "{{${name}}}" has no value for this assembly (section "${section.name}")`)
+      throw new Error(`prompt variable "{{${name}}}" has no value for this assembly (${kind} "${input.name}")`)
     }
     result += text.slice(last, open) + value
     last = open + group[0].length
@@ -220,6 +265,7 @@ type VariableProvider = (context: AssembleContext) => string | undefined
 /** All prompt registrations owned by one global or scoped layer. */
 class PromptLayer implements ScopeLayer {
   readonly sections: NamedEntries
+  readonly contexts: NamedEntries
   readonly toolProviders = new AnonymousEntries()
   readonly variables: NamedEntries
 
@@ -231,6 +277,9 @@ class PromptLayer implements ScopeLayer {
     this.sections = new NamedEntries(name => new Error(scope === undefined
       ? `prompt section "${name}" is already registered (for a per-agent override, register through that agent's \`agent.ctx\` instead)`
       : `prompt section "${name}" is already registered in this scope`))
+    this.contexts = new NamedEntries(name => new Error(scope === undefined
+      ? `prompt context "${name}" is already registered (for a per-agent override, register through that agent's \`agent.ctx\` instead)`
+      : `prompt context "${name}" is already registered in this scope`))
     this.variables = new NamedEntries(name => new Error(scope === undefined
       ? `prompt variable "${name}" is already registered (for a per-agent value, register through that agent's \`agent.ctx\` instead)`
       : `prompt variable "${name}" is already registered in this scope`))
@@ -239,6 +288,7 @@ class PromptLayer implements ScopeLayer {
   /** @returns whether this layer owns no prompt registrations. */
   isEmpty(): boolean {
     return this.sections.isEmpty()
+      && this.contexts.isEmpty()
       && this.toolProviders.isEmpty()
       && this.variables.isEmpty()
   }
@@ -297,6 +347,25 @@ export class SystemPrompt extends Service {
     )
   }
 
+  /**
+   * Register ordered cache-safe dynamic context in the calling context's scope.
+   * A scoped context shadows a global context with the same name; duplicates
+   * within one layer and non-finite orders throw. Registration and disposal
+   * emit `system-prompt/change`.
+   * @param context - the context contribution to register.
+   * @returns the exact Cordis effect disposer.
+   */
+  context(context: PromptContext): () => void {
+    if (!Number.isFinite(context.order)) {
+      throw new TypeError(`prompt context "${context.name}" order must be a finite number`)
+    }
+    return this.layers.effect(
+      this.ctx,
+      layer => layer.contexts.insert(context.name, context),
+      { label: 'systemPrompt.context()' },
+    )
+  }
+
   /**
    * Register a tool-schema provider in the calling context's scope. Global and
    * matching scoped providers both contribute; returning the reserved
@@ -352,6 +421,7 @@ export class SystemPrompt extends Service {
     }
     // Scoped sections shadow globals before the stable order sort.
     const sectionByName = this.layers.merge(scope, layer => layer.sections)
+    const contextByName = this.layers.merge(scope, layer => layer.contexts)
     // Validate order against pre-restriction names while collecting visible schemas.
     const providers = [
       ...this.layers.global.toolProviders.values(),
@@ -377,6 +447,12 @@ export class SystemPrompt extends Service {
           name: section.name,
           text: typeof section.text === 'function' ? section.text(context) : section.text,
         })),
+      contexts: [...contextByName.values()]
+        .sort((a, b) => a.order - b.order)
+        .map(entry => ({
+          name: entry.name,
+          text: typeof entry.text === 'function' ? entry.text(context) : entry.text,
+        })),
       tools: orderTools(collected, this.toolOrder, knownNames),
       variables,
     }
diff --git a/packages/core/system-prompt/src/invariant.ts b/packages/core/system-prompt/src/invariant.ts
index e199cc98b4..04dc65e7ad 100644
--- a/packages/core/system-prompt/src/invariant.ts
+++ b/packages/core/system-prompt/src/invariant.ts
@@ -22,6 +22,14 @@ function validateAssembly(assembly: PromptAssembly, fail: InvariantFailure): voi
     if (typeof section.text !== 'string') fail(`assembled section ${JSON.stringify(section.name)} text must be a string`)
   }
 
+  const contextNames = new Set()
+  for (const context of assembly.contexts) {
+    if (context.name.length === 0) fail('assembled context names must be non-empty')
+    if (contextNames.has(context.name)) fail(`assembled context name ${JSON.stringify(context.name)} is duplicated`)
+    contextNames.add(context.name)
+    if (typeof context.text !== 'string') fail(`assembled context ${JSON.stringify(context.name)} text must be a string`)
+  }
+
   for (const tool of assembly.tools) {
     if (tool.name.length === 0) fail('assembled tool names must be non-empty')
   }
diff --git a/packages/core/system-prompt/tests/invariant.spec.ts b/packages/core/system-prompt/tests/invariant.spec.ts
index ce03af0b9f..ace65d2bc9 100644
--- a/packages/core/system-prompt/tests/invariant.spec.ts
+++ b/packages/core/system-prompt/tests/invariant.spec.ts
@@ -13,6 +13,7 @@ async function setup(): Promise {
 
 const valid = (): PromptAssembly => ({
   sections: [{ name: 'identity', text: 'prompt' }],
+  contexts: [{ name: 'policy', text: 'current policy' }],
   tools: [{ name: 'echo', description: 'Echo', parameters: {} }],
   variables: { cwd: '/repo', optional: undefined },
 })
@@ -34,6 +35,9 @@ describe('system-prompt invariants', () => {
     [{ ...valid(), sections: [{ name: '', text: 'x' }] }, /section names must be non-empty/],
     [{ ...valid(), sections: [{ name: 'x', text: 'a' }, { name: 'x', text: 'b' }] }, /section name "x" is duplicated/],
     [{ ...valid(), sections: [{ name: 'x', text: 1 as never }] }, /section "x" text must be a string/],
+    [{ ...valid(), contexts: [{ name: '', text: 'x' }] }, /context names must be non-empty/],
+    [{ ...valid(), contexts: [{ name: 'x', text: 'a' }, { name: 'x', text: 'b' }] }, /context name "x" is duplicated/],
+    [{ ...valid(), contexts: [{ name: 'x', text: 1 as never }] }, /context "x" text must be a string/],
     [{ ...valid(), tools: [{ name: '', description: 'x', parameters: {} }] }, /tool names must be non-empty/],
     [{ ...valid(), variables: { Bad: 'x' } }, /variable name "Bad" is invalid/],
     [{ ...valid(), variables: { value: 1 as never } }, /variable "value" must be a string or undefined/],
diff --git a/packages/core/system-prompt/tests/scoped.spec.ts b/packages/core/system-prompt/tests/scoped.spec.ts
index 23b55201b2..704a3e769c 100644
--- a/packages/core/system-prompt/tests/scoped.spec.ts
+++ b/packages/core/system-prompt/tests/scoped.spec.ts
@@ -2,7 +2,7 @@ import { describe, expect, it, vi } from 'vitest'
 import { Context } from 'cordis'
 import { createScope, scopeOf } from '@deepseek-ai/dsh-scope'
 import type { Scope, ScopeKey } from '@deepseek-ai/dsh-scope'
-import SystemPrompt, { TOOL_ORDER_REST, renderPrompt } from '@deepseek-ai/dsh-system-prompt'
+import SystemPrompt, { TOOL_ORDER_REST, renderContextSnapshot, renderPrompt } from '@deepseek-ai/dsh-system-prompt'
 import type { Config, PromptAssembly } from '@deepseek-ai/dsh-system-prompt'
 
 async function mount(config: Config = {}): Promise {
@@ -125,6 +125,25 @@ describe('scoped variables', () => {
   })
 })
 
+describe('scoped cache-safe context', () => {
+  it('shadows a global context for one scope and cleans up with that scope', async () => {
+    const ctx = await mount()
+    const scope = await mintScope(ctx, 'child-context')
+    ctx.systemPrompt.context({ name: 'policy', order: 1, text: 'global policy' })
+    scope.ctx.systemPrompt.context({ name: 'policy', order: 1, text: 'scoped policy' })
+    expect(() => scope.ctx.systemPrompt.context({ name: 'policy', order: 2, text: 'duplicate' }))
+      .toThrow('prompt context "policy" is already registered in this scope')
+
+    expect(renderContextSnapshot(await ctx.systemPrompt.assemble({ scope: scopeKeyOf(scope) })))
+      .toContain('scoped policy')
+    expect(renderContextSnapshot(await ctx.systemPrompt.assemble())).toContain('global policy')
+
+    await scope.dispose()
+    expect(renderContextSnapshot(await ctx.systemPrompt.assemble({ scope: scopeKeyOf(scope) })))
+      .toContain('global policy')
+  })
+})
+
 describe('scoped tool providers and toolOrder × restriction', () => {
   it('scoped providers are consulted only for their scope', async () => {
     const ctx = await mount()
diff --git a/packages/core/system-prompt/tests/system-prompt.spec.ts b/packages/core/system-prompt/tests/system-prompt.spec.ts
index 02ac58889d..834c17c341 100644
--- a/packages/core/system-prompt/tests/system-prompt.spec.ts
+++ b/packages/core/system-prompt/tests/system-prompt.spec.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest'
 import { Context } from 'cordis'
-import SystemPrompt, { AssembleContext, PromptAssembly, renderPrompt } from '@deepseek-ai/dsh-system-prompt'
+import SystemPrompt, { AssembleContext, PromptAssembly, renderContextSnapshot, renderPrompt } from '@deepseek-ai/dsh-system-prompt'
 
 /**
  * Every assembly carries the plugin's own built-ins — `harness:identity`
@@ -64,14 +64,21 @@ describe('SystemPrompt', () => {
 
     ctx.systemPrompt.section({ name: 'cwd', order: 20, text: () => 'cwd: /tmp' })
     ctx.systemPrompt.section({ name: 'rules', order: 10, text: 'Be precise.' })
+    ctx.systemPrompt.context({ name: 'later', order: 20, text: () => 'context 2' })
+    ctx.systemPrompt.context({ name: 'earlier', order: 10, text: 'context 1' })
     ctx.systemPrompt.tools(() => ({ schemas: [{ name: 'echo', description: 'echo back', parameters: {} }] }))
 
     const assembly = await ctx.systemPrompt.assemble()
     expect(assembly.sections.map(s => s.name)).toEqual(['harness:identity', 'deployment:persona', 'rules', 'cwd'])
     expect(assembly.sections.map(s => s.text)).toEqual([IDENTITY, 'You are DeepSeek Harness SDK.', 'Be precise.', 'cwd: /tmp'])
+    expect(assembly.contexts).toEqual([
+      { name: 'earlier', text: 'context 1' },
+      { name: 'later', text: 'context 2' },
+    ])
     expect(assembly.tools).toEqual([{ name: 'echo', description: 'echo back', parameters: {} }])
     expect(assembly.variables).toEqual({})
     expect(renderPrompt(assembly)).toBe(`${IDENTITY}\n\nYou are DeepSeek Harness SDK.\n\nBe precise.\n\ncwd: /tmp`)
+    expect(renderContextSnapshot(assembly)).toBe('Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\ncontext 1\n\ncontext 2')
   })
 
   it('resolves section text providers against the assemble context, at each assemble call', async () => {
@@ -96,16 +103,19 @@ describe('SystemPrompt', () => {
 
     const fiber = await ctx.plugin(Object.assign((inner: Context) => {
       inner.systemPrompt.section({ name: 'scoped', order: 0, text: 'scoped section' })
+      inner.systemPrompt.context({ name: 'scoped-context', order: 0, text: 'scoped context' })
       inner.systemPrompt.tools(() => ({ schemas: [{ name: 'scoped-tool', description: '', parameters: {} }] }))
       inner.systemPrompt.variable('scoped_var', () => 'v')
     }, { inject: ['systemPrompt'] }))
 
     const before = await ctx.systemPrompt.assemble()
     expect(contributed(before)).toHaveLength(1)
+    expect(before.contexts).toHaveLength(1)
     expect(before.variables).toEqual({ scoped_var: 'v' })
     await fiber.dispose()
     const assembly = await ctx.systemPrompt.assemble()
     expect(contributed(assembly)).toHaveLength(0)
+    expect(assembly.contexts).toHaveLength(0)
     // The built-ins belong to the service fiber, so they survive the plugin's disposal.
     expect(assembly.sections.map(s => s.name)).toEqual(BUILT_IN)
     expect(assembly.tools).toHaveLength(0)
@@ -131,6 +141,17 @@ describe('SystemPrompt', () => {
     expect(contributed(await ctx.systemPrompt.assemble())).toEqual([])
   })
 
+  it('rejects duplicate and non-finite context registrations without leaking', async () => {
+    const ctx = new Context()
+    await ctx.plugin(SystemPrompt)
+    ctx.systemPrompt.context({ name: 'policy', order: 1, text: 'first' })
+    expect(() => ctx.systemPrompt.context({ name: 'policy', order: 2, text: 'second' }))
+      .toThrow('prompt context "policy" is already registered')
+    expect(() => ctx.systemPrompt.context({ name: 'bad', order: Number.NaN, text: 'x' }))
+      .toThrow('prompt context "bad" order must be a finite number')
+    expect((await ctx.systemPrompt.assemble()).contexts).toEqual([{ name: 'policy', text: 'first' }])
+  })
+
   it('rolls back a section when a system-prompt/change listener throws (P1-1)', async () => {
     const ctx = new Context()
     await ctx.plugin(SystemPrompt)
@@ -236,7 +257,7 @@ describe('SystemPrompt', () => {
     ctx.systemPrompt.section({ name: 'real', order: 0, text: 'real' })
 
     ctx.on('system-prompt/assemble', async () => {
-      return { sections: [], tools: [], variables: {} } satisfies PromptAssembly
+      return { sections: [], contexts: [], tools: [], variables: {} } satisfies PromptAssembly
     })
 
     const assembly = await ctx.systemPrompt.assemble()
@@ -252,6 +273,7 @@ describe('SystemPrompt', () => {
     const first = await ctx.systemPrompt.assemble()
     first.sections[0]!.name = 'mutated'
     first.sections[0]!.text = 'mutated'
+    first.contexts.push({ name: 'mutated', text: 'mutated' })
     first.tools[0]!.description = 'mutated'
     const firstParameters = first.tools[0]!.parameters as { properties: Record }
     firstParameters.properties['leak'] = { type: 'string' }
@@ -259,6 +281,7 @@ describe('SystemPrompt', () => {
     const second = await ctx.systemPrompt.assemble()
     expect(second.sections.map(section => section.name)).toEqual(['harness:identity', 'deployment:persona', 'base'])
     expect(second.sections[0]!.text).toBe(IDENTITY)
+    expect(second.contexts).toEqual([])
     expect(second.tools).toEqual([{ name: 't', description: 'tool', parameters: { type: 'object', properties: {} } }])
   })
 
@@ -268,12 +291,33 @@ describe('SystemPrompt', () => {
         { name: 'empty', text: '' },
         { name: 'real', text: 'content' },
       ],
+      contexts: [],
       tools: [],
       variables: {},
     })
     expect(result).toBe('content')
   })
 
+  it('filters empty context, interpolates variables, and returns empty without active context', async () => {
+    const ctx = new Context()
+    await ctx.plugin(SystemPrompt)
+    ctx.systemPrompt.context({ name: 'empty', order: 0, text: '' })
+    expect(renderContextSnapshot(await ctx.systemPrompt.assemble())).toBe('')
+    ctx.systemPrompt.variable('mode', () => 'read-only')
+    ctx.systemPrompt.context({ name: 'policy', order: 1, text: 'Mode: {{mode}}.' })
+    expect(renderContextSnapshot(await ctx.systemPrompt.assemble()))
+      .toBe('Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nMode: read-only.')
+  })
+
+  it('attributes context interpolation failures to the contributing context', () => {
+    expect(() => renderContextSnapshot({
+      sections: [],
+      contexts: [{ name: 'policy', text: 'Mode: {{missing}}.' }],
+      tools: [],
+      variables: {},
+    })).toThrow('unknown prompt variable "{{missing}}" in context "policy"; registered variables: (none)')
+  })
+
   it('emits system-prompt/change when a tool provider is registered and disposed', async () => {
     const ctx = new Context()
     await ctx.plugin(SystemPrompt)
@@ -290,6 +334,17 @@ describe('SystemPrompt', () => {
     expect(changeCount).toBe(2)
   })
 
+  it('emits system-prompt/change when a context is registered and disposed', async () => {
+    const ctx = new Context()
+    await ctx.plugin(SystemPrompt)
+    let changeCount = 0
+    ctx.on('system-prompt/change', () => void changeCount++)
+    const dispose = ctx.systemPrompt.context({ name: 'policy', order: 0, text: 'current' })
+    expect(changeCount).toBe(1)
+    dispose()
+    expect(changeCount).toBe(2)
+  })
+
   it('cleans up tool providers on fiber dispose', async () => {
     const ctx = new Context()
     await ctx.plugin(SystemPrompt)
@@ -404,13 +459,14 @@ describe('SystemPrompt', () => {
     })
 
     it('names "(none)" when no variables are registered at all', () => {
-      expect(() => renderPrompt({ sections: [{ name: 's', text: '{{x}}' }], tools: [], variables: {} }))
+      expect(() => renderPrompt({ sections: [{ name: 's', text: '{{x}}' }], contexts: [], tools: [], variables: {} }))
         .toThrow('unknown prompt variable "{{x}}" in section "s"; registered variables: (none)')
     })
 
     it('throws when a referenced variable has no value for this assembly', () => {
       expect(() => renderPrompt({
         sections: [{ name: 'persona', text: 'in {{cwd}}' }],
+        contexts: [],
         tools: [],
         variables: { cwd: undefined },
       })).toThrow('prompt variable "{{cwd}}" has no value for this assembly (section "persona")')
@@ -419,6 +475,7 @@ describe('SystemPrompt', () => {
     it('throws on a malformed complete reference, e.g. inner spaces', () => {
       expect(() => renderPrompt({
         sections: [{ name: 's', text: 'on {{ model }}' }],
+        contexts: [],
         tools: [],
         variables: { model: 'm' },
       })).toThrow('malformed prompt variable reference "{{ model }}" in section "s"')
@@ -427,6 +484,7 @@ describe('SystemPrompt', () => {
     it('leaves a lone {{ verbatim only when NO }} follows anywhere after it', () => {
       const text = renderPrompt({
         sections: [{ name: 's', text: 'shell ${X:-{{fallback} stays' }],
+        contexts: [],
         tools: [],
         variables: {},
       })
@@ -439,6 +497,7 @@ describe('SystemPrompt', () => {
     ])('throws on a mangled reference with a }} still following ($label)', ({ text }) => {
       expect(() => renderPrompt({
         sections: [{ name: 's', text }],
+        contexts: [],
         tools: [],
         variables: { model: 'm' },
       })).toThrow('malformed prompt variable reference at')
@@ -449,6 +508,7 @@ describe('SystemPrompt', () => {
       // source into the prompt; Object.hasOwn must reject it instead.
       expect(() => renderPrompt({
         sections: [{ name: 's', text: 'on {{constructor}}' }],
+        contexts: [],
         tools: [],
         variables: { model: 'm' },
       })).toThrow('unknown prompt variable "{{constructor}}"')
@@ -465,6 +525,7 @@ describe('SystemPrompt', () => {
     it('never re-scans substituted values (a value containing {{sneaky}} stays literal)', () => {
       const text = renderPrompt({
         sections: [{ name: 's', text: 'v = {{model}}!' }],
+        contexts: [],
         tools: [],
         variables: { model: 'literal {{sneaky}} inside' },
       })
diff --git a/packages/fs/fs-sandbox/README.i18n.yaml b/packages/fs/fs-sandbox/README.i18n.yaml
index 2b12b6c282..e6d4780297 100644
--- a/packages/fs/fs-sandbox/README.i18n.yaml
+++ b/packages/fs/fs-sandbox/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/fs/fs-sandbox/README.md
-README.md: 790444a4184b9bcccd3a0798cf0c09cb6f1b166e
-README.zh.md: d54bdcbe65673b6892ebd1d539dd066f66d68cb6
+README.md: d6070f4971e7531e929e659b6b5ed476a672dc5d
+README.zh.md: c051b240163f229f7fbc583939c9f4da5095e9aa
diff --git a/packages/fs/fs-sandbox/README.md b/packages/fs/fs-sandbox/README.md
index 790444a418..d6070f4971 100644
--- a/packages/fs/fs-sandbox/README.md
+++ b/packages/fs/fs-sandbox/README.md
@@ -22,11 +22,19 @@ A denial is a structured `FsError` (`FS_SANDBOX_DENIED`, carrying the effective
 
 ## Model Experience
 
-Indirectly, through `dsh-tool-fs`, which renders this backend's `FS_SANDBOX_DENIED` refusals as the `[sandbox: file access denied under  mode]` marker plus the same-turn escalation hint.
+### Filesystem policy and refusals
+
+#### What the model sees
+
+The policy owner contributes capability-neutral `sandbox:policy` context. Indirectly, `dsh-tool-fs` renders this backend's `FS_SANDBOX_DENIED` refusals as the `[sandbox: file access denied under  mode]` marker plus the same-turn escalation hint.
+
+#### Token effect
+
+The current-policy clause adds a small runtime-context message while this backend is mounted; a denial adds the bounded marker and escalation hint to conversation history.
 
 #### KV Cache effect
 
-No direct invalidation; the named consumer owns any request-prefix changes.
+A standing-policy change appends an owner-rendered superseding runtime-context snapshot after retained history; operation results remain append-only.
 
 ## Known Limitations and Deferred Work
 
diff --git a/packages/fs/fs-sandbox/README.zh.md b/packages/fs/fs-sandbox/README.zh.md
index d54bdcbe65..c051b24016 100644
--- a/packages/fs/fs-sandbox/README.zh.md
+++ b/packages/fs/fs-sandbox/README.zh.md
@@ -22,11 +22,19 @@
 
 ## 模型体验
 
-通过 `dsh-tool-fs` 间接产生影响；该消费方把本后端的 `FS_SANDBOX_DENIED` 拒绝渲染为 `[sandbox: file access denied under  mode]` 标记和同轮次升级提示。
+### 文件系统策略与拒绝
+
+#### 模型看到的内容
+
+策略归属方会贡献与具体能力无关的 `sandbox:policy` 上下文。作为间接影响，`dsh-tool-fs` 会把本后端的 `FS_SANDBOX_DENIED` 拒绝渲染为 `[sandbox: file access denied under  mode]` 标记和同轮次升级提示。
+
+#### Token 影响
+
+该后端挂载期间，当前策略条款会增加一条简短的运行时上下文消息；拒绝则会把有界标记和升级提示追加到对话历史。
 
 #### KV Cache 影响
 
-不会直接使缓存失效；上述消费方负责请求前缀的任何变化。
+常驻策略发生变化时，会在保留的历史之后追加一份由归属方渲染、取代先前状态的运行时上下文快照；操作结果保持仅追加。
 
 ## 已知限制与暂缓事项
 
diff --git a/packages/fs/fs-sandbox/src/index.ts b/packages/fs/fs-sandbox/src/index.ts
index 796b65f192..5e0121c89a 100644
--- a/packages/fs/fs-sandbox/src/index.ts
+++ b/packages/fs/fs-sandbox/src/index.ts
@@ -44,7 +44,7 @@ import { isPathUnder } from './containment.ts'
  * Plugin config: the local backend's knobs, verbatim (only `cwd`, the resolve
  * base for relative paths). The sandbox default (mode + `workspace-write`
  * fallback root) is NOT here — `ctx.sandboxPolicy` resolves each calling
- * session for both enforcing families.
+ * session for every enforcing capability.
  */
 export type Config = LocalConfig
 
diff --git a/packages/fs/tool-fs/README.i18n.yaml b/packages/fs/tool-fs/README.i18n.yaml
index 65c6b65268..fbe2e69043 100644
--- a/packages/fs/tool-fs/README.i18n.yaml
+++ b/packages/fs/tool-fs/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/fs/tool-fs/README.md
-README.md: c00b59fed06249e6d9479c4a809cdf7d78f93239
-README.zh.md: f90fbb36391c1388ab0f6836daa2a9061d046be6
+README.md: a695d0ba8fb1d600689d2b68763e8423d1591da5
+README.zh.md: 5c600ab70b46da640637aec64efc1c0f0d0d54c0
diff --git a/packages/fs/tool-fs/README.md b/packages/fs/tool-fs/README.md
index c00b59fed0..a695d0ba8f 100644
--- a/packages/fs/tool-fs/README.md
+++ b/packages/fs/tool-fs/README.md
@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-The **model-facing filesystem tools** — `read`, `write`, `edit` — and their **executor**. This is the consumer layer of the filesystem stack: it owns tool names, JSON schemas, argument validation, prompt sections, **read windowing**, and result formatting. It reads/writes/edits through the `ctx.fs` provider seam ([`@deepseek-ai/dsh-fs`](../fs)) **directly** — it injects `fs` (plus `tools`/`systemPrompt`), **not** a policy service. The freshness/observation policy is contributed by a separate plugin ([`@deepseek-ai/dsh-fs-policy`](../fs-policy)) through the `fs/*` event gate; the tool is not method-coupled to it.
+The **model-facing filesystem tools** — `read`, `write`, `edit` — and their **executor**. This is the consumer layer of the filesystem stack: it owns tool names, JSON schemas, argument validation, prompt sections, **read windowing**, and result formatting. It reads/writes/edits through the `ctx.fs` provider seam ([`@deepseek-ai/dsh-fs`](../fs)) **directly**. The freshness/observation policy is contributed by a separate plugin ([`@deepseek-ai/dsh-fs-policy`](../fs-policy)) through the `fs/*` event gate; the tool is not method-coupled to it. Under a confining provider, the shared sandbox-policy service is required for per-session execution and the tool exposes escalation for filesystem mutations.
 
 ```ts ignore-check
 // Default deployment: a ctx.fs provider, the policy plugin, then the tools.
@@ -46,6 +46,8 @@ The tools do **not** inject a policy service or inspect any cache. Each tool res
 
 The tool passes `exec` (the tool-execution context) as the opaque `actor` on every dispatch. The default thunks return `undefined` (the unconstrained bare provider). When `@deepseek-ai/dsh-fs-policy` is loaded it occupies the single decision slot — returning `createIfAbsent`/`replaceIfVersion`/`{ version }` or throwing `FS_NOT_OBSERVED` — and records on `fs/observed`. Backend errors (`FsError`) and a thrown `FS_NOT_OBSERVED` flow through `ToolRegistry.execute()` and become `isError` tool results with their `{ name, code }` attached.
 
+When `ctx.fs.sandboxMode` reports confinement, write/edit advertise `sandbox_permissions` and `justification` and resolve approved retries through `ctx.approval`. The policy owner contributes capability-neutral standing policy; the tool results retain operation-specific denial and retry guidance.
+
 ## `fs/observed` is fire-and-forget
 
 `fs/observed` fires AFTER the read/write/edit already succeeded, via a plain `ctx.emit`. A listener is contractually a synchronous, side-effect-only recorder (`@deepseek-ai/dsh-fs-policy`'s is a `WeakMap.set`); the tool does not guard the emit, so a listener that throws would surface as the tool's `isError` result — async or fallible observation does not belong on this event.
diff --git a/packages/fs/tool-fs/README.zh.md b/packages/fs/tool-fs/README.zh.md
index f90fbb3639..5c600ab70b 100644
--- a/packages/fs/tool-fs/README.zh.md
+++ b/packages/fs/tool-fs/README.zh.md
@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-**面向模型的文件系统工具**（`read`、`write`、`edit`）及其**执行器**。这是文件系统栈的消费方层：拥有工具名称、JSON Schema、参数校验、提示词段、**读取窗口逻辑**和结果格式化。它**直接**通过 `ctx.fs` 提供方 seam（[`@deepseek-ai/dsh-fs`](../fs)）读取/写入/编辑：注入 `fs`（以及 `tools`/`systemPrompt`），**不**注入策略服务。新鲜度/观察策略由独立插件（[`@deepseek-ai/dsh-fs-policy`](../fs-policy)）通过 `fs/*` 事件门禁贡献；工具不与其方法耦合。
+**面向模型的文件系统工具**（`read`、`write`、`edit`）及其**执行器**。这是文件系统栈的消费方层：拥有工具名称、JSON Schema、参数校验、提示词段、**读取窗口逻辑**和结果格式化。它**直接**通过 `ctx.fs` 提供方 seam（[`@deepseek-ai/dsh-fs`](../fs)）读取／写入／编辑。新鲜度／观察策略由独立插件（[`@deepseek-ai/dsh-fs-policy`](../fs-policy)）通过 `fs/*` 事件门禁贡献；工具不与其方法耦合。使用施加沙箱限制的提供方时，逐会话执行需要共享沙箱策略服务，工具还会为文件系统变更提供升权路径。
 
 ```ts ignore-check
 // Default deployment: a ctx.fs provider, the policy plugin, then the tools.
@@ -46,6 +46,8 @@ await ctx.plugin(ToolFs)                                  // this package — re
 
 工具在每次分派中把 `exec`（工具执行上下文）作为不透明 `actor` 传入。默认 thunk 返回 `undefined`（不受约束的裸提供方）。加载 `@deepseek-ai/dsh-fs-policy` 后，它会占用单个决策槽：返回 `createIfAbsent`/`replaceIfVersion`/`{ version }` 或抛出 `FS_NOT_OBSERVED`，并在 `fs/observed` 时记录。后端错误（`FsError`）和抛出的 `FS_NOT_OBSERVED` 会流经 `ToolRegistry.execute()`，变成 `isError` 工具结果，并附带 `{ name, code }`。
 
+当 `ctx.fs.sandboxMode` 表明提供方施加沙箱限制时，write/edit 会公开 `sandbox_permissions` 与 `justification`，并通过 `ctx.approval` 解析经批准的重试。策略归属方会贡献与具体能力无关的常驻策略；工具结果仍保留操作特定的拒绝与重试引导。
+
 ## `fs/observed` 发后即忘
 
 `fs/observed` 在读取/写入/编辑已经成功之后，通过普通 `ctx.emit` 发出。监听器的契约是同步且只有副作用的记录器（`@deepseek-ai/dsh-fs-policy` 使用 `WeakMap.set`）；工具不保护这次发出，因此监听器抛出会作为工具的 `isError` 结果出现。异步或可能失败的观察不属于该事件。
diff --git a/packages/host/directory-picker-browse/package.json b/packages/host/directory-picker-browse/package.json
index a9f3fc2090..ab0cb593dc 100644
--- a/packages/host/directory-picker-browse/package.json
+++ b/packages/host/directory-picker-browse/package.json
@@ -49,6 +49,7 @@
   "devDependencies": {
     "@deepseek-ai/dsh-client-locale": "workspace:^",
     "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:^",
     "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
     "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
     "@deepseek-ai/dsh-client-ui-workspace": "workspace:^",
diff --git a/packages/host/directory-picker-browse/tests/client-flow.spec.tsx b/packages/host/directory-picker-browse/tests/client-flow.spec.tsx
index 31ec5a4927..cde35bff03 100644
--- a/packages/host/directory-picker-browse/tests/client-flow.spec.tsx
+++ b/packages/host/directory-picker-browse/tests/client-flow.spec.tsx
@@ -5,10 +5,15 @@ import { cleanup, render, screen } from '@testing-library/react'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import type { DirectoryListing } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
+import { usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
 import type { DirectoryFlowOwnerProps } from '@deepseek-ai/dsh-client-ui-workspace/client'
 import { apply, inject } from '../src/client/index.ts'
 import { BrowseDirectoryFlow } from '../src/client/flow.ts'
 
+// The service reads its initial locale from the browser; these specs assert
+// the shipped Chinese copy, so they state the browser they assume.
+usePinnedBrowserLanguages('zh-CN')
+
 afterEach(cleanup)
 
 const HOLES = ['conversation.hero.workspace.directoryFlow', 'sidebar.workspaces.directoryFlow'] as const
diff --git a/packages/llm/llm/README.i18n.yaml b/packages/llm/llm/README.i18n.yaml
index 50c6c42cfd..630a60af19 100644
--- a/packages/llm/llm/README.i18n.yaml
+++ b/packages/llm/llm/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/llm/llm/README.md
-README.md: f4be9b298c730b7ec0a0faa4470890fe5e3f5af8
-README.zh.md: 9aa22ba861ee368523b03a5472ea783bbcbbd765
+README.md: 21f428fb22c9a59a67d86f446ea866c1629b964a
+README.zh.md: f6421f0625de7e63432a4863db6fb2d96ecd1b3f
diff --git a/packages/llm/llm/README.md b/packages/llm/llm/README.md
index f4be9b298c..21f428fb22 100644
--- a/packages/llm/llm/README.md
+++ b/packages/llm/llm/README.md
@@ -18,7 +18,7 @@ An adapter registry plus a single streaming call surface, interceptable via a wa
 - `ctx.llm.listModels(provider: string): Promise` Discover the models one registered provider currently advertises.
 - `ctx.llm.resolveModelInfo(provider: string, model: string, signal?: AbortSignal): Promise` Resolve validated exact-model identity plus available context, output-default, and reasoning metadata from the owning adapter, with optional cancellation for asynchronous adapters.
 - `ctx.llm.resolveCallConfig(config: LlmCallConfig, signal?: AbortSignal): Promise` Validate an explicit effort and materialize adapter-configured call defaults without clamping.
-- `ctx.llm.prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise` Resolve a config and capture its current adapter registration as one cancellable, one-shot call.
+- `ctx.llm.prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise` Resolve a config plus detached context metadata and adapter-default provenance in one exact-model lookup, then capture its current adapter registration as one cancellable, one-shot call.
 - `ctx.llm.stream(options: GenerateOptions): AsyncIterable` Stream one model call as raw chunks (token-level deltas). Consumers assemble the chunks into blocks/messages with `BlockAssembler`.
 
 `LlmService` preserves errors from final adapter selection, synchronous dispatch, iterator construction, and iteration, and binds their provenance to the exact stream handle returned for that model call. `isLlmAdapterFailure(stream, value)` reports only errors from that call's final adapter boundary; `llmFailureOf(stream, value)` returns the adjacent immutable `LlmFailure`; `llmRetryPolicyOf(stream)` returns the immutable policy of the exact registration selected at that boundary, even if the route is later disposed or replaced. A call that never reaches a final adapter has no serving policy. Nested model calls, `llm/stream` middleware, and downstream consumer failures remain unclassified for the outer call. Classification never replaces or mutates the adapter's original coded `Error`.
@@ -29,7 +29,7 @@ Every topology commit point — adapter routes registering or disposing, directo
 
 Exact-model metadata is a separate correctness query, not a catalog decoration or global LLM setting. `resolveModelInfo()` asks the adapter that owns the exact provider/model route once; an adapter can describe an unlisted dynamic model, and absent `context`, `defaultMaxTokens`, or `reasoning` fields preserve unknown capacity, provider-owned output defaults, or unavailable reasoning capability. Invalid identity, context, output default, or reasoning metadata fails with `INVALID_MODEL_INFO`, `INVALID_MODEL_CONTEXT`, `INVALID_MODEL_MAX_TOKENS`, or `INVALID_MODEL_REASONING`.
 
-`defaultMaxTokens` is an adapter-configured per-request output cap, not a model hard limit. `resolveCallConfig()` materializes it only when the request omits `maxTokens`; an explicit cap wins. Reasoning identifiers are opaque adapter-owned strings rather than a core enum: the same resolution accepts only an exact advertised identifier, materializes `defaultEffort` when present, and otherwise preserves the provider default. Asynchronous model resolvers receive the caller's signal and must settle promptly after cancellation. `prepareCall()` additionally reports which `maxTokens` and `reasoningEffort` fields it materialized in `adapterDefaults` and retains the exact adapter registration through header logging and terminal dispatch, so HMR cannot combine one adapter's capability result with another adapter's request; reusing its one-shot handle or changing its call-config fields fails with `INVALID_PREPARED_CALL`. An unsupported explicit or configured effort fails with `UNSUPPORTED_REASONING_EFFORT` before provider I/O.
+`defaultMaxTokens` is an adapter-configured per-request output cap, not a model hard limit. `resolveCallConfig()` materializes it only when the request omits `maxTokens`; an explicit cap wins. Reasoning identifiers are opaque adapter-owned strings rather than a core enum: the same resolution accepts only an exact advertised identifier, materializes `defaultEffort` when present, and otherwise preserves the provider default. Asynchronous model resolvers receive the caller's signal and must settle promptly after cancellation. `prepareCall()` additionally exposes detached context metadata from the same lookup, reports which `maxTokens` and `reasoningEffort` fields it materialized in `adapterDefaults`, and retains the exact adapter registration through header logging and terminal dispatch, so HMR cannot combine one adapter's capability result with another adapter's request; reusing its one-shot handle or changing its call-config fields fails with `INVALID_PREPARED_CALL`. An unsupported explicit or configured effort fails with `UNSUPPORTED_REASONING_EFFORT` before provider I/O.
 
 ### Events
 
diff --git a/packages/llm/llm/README.zh.md b/packages/llm/llm/README.zh.md
index 9aa22ba861..f6421f0625 100644
--- a/packages/llm/llm/README.zh.md
+++ b/packages/llm/llm/README.zh.md
@@ -18,7 +18,7 @@
 - `ctx.llm.listModels(provider: string): Promise` 发现某个已注册提供方当前公布的模型。
 - `ctx.llm.resolveModelInfo(provider: string, model: string, signal?: AbortSignal): Promise` 从拥有精确路由的适配器解析经校验的确切模型身份，以及可用上下文、输出默认值和推理（reasoning）元数据；异步适配器可选地支持取消。
 - `ctx.llm.resolveCallConfig(config: LlmCallConfig, signal?: AbortSignal): Promise` 校验显式推理强度，并填入适配器配置的调用默认值，但不自动调整。
-- `ctx.llm.prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise` 解析配置并将其当前适配器注册捕获为一次可取消、一次性调用。
+- `ctx.llm.prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise` 在一次精确模型查询中解析配置、脱耦的上下文元数据与适配器默认值溯源，再将其当前适配器注册捕获为一次可取消、一次性调用。
 - `ctx.llm.stream(options: GenerateOptions): AsyncIterable` 将一次模型调用流式输出为原始分片（token 级增量）。消费方使用 `BlockAssembler` 将分片组装为块／消息。
 
 `LlmService` 保留来自最终适配器选择、同步 dispatch、iterator 构造与迭代的错误，并将其溯源绑定到该次模型调用返回的精确流句柄。`isLlmAdapterFailure(stream, value)` 只报告该调用最终适配器边界的错误；`llmFailureOf(stream, value)` 返回关联的不可变 `LlmFailure`；`llmRetryPolicyOf(stream)` 返回在该边界选中的确切注册所对应的不可变策略，即使之后释放或替换路由也不变。未到达最终适配器的调用没有服务策略。嵌套模型调用、`llm/stream` middleware 和下游消费方失败对外层调用仍未分类。分类绝不替换或更改适配器原有的带代码 `Error`。
@@ -29,7 +29,7 @@
 
 确切模型元数据是独立的正确性查询，不是 catalog 装饰或全局 LLM 设置。`resolveModelInfo()` 会向拥有精确提供方／模型路由的适配器查询一次；适配器可以描述未列出的动态模型，缺少 `context`、`defaultMaxTokens` 或 `reasoning` 字段会分别保留未知容量、提供方持有的输出默认值或不可用的推理能力。无效的身份、上下文、输出默认值或推理元数据会以 `INVALID_MODEL_INFO`、`INVALID_MODEL_CONTEXT`、`INVALID_MODEL_MAX_TOKENS` 或 `INVALID_MODEL_REASONING` 失败。
 
-`defaultMaxTokens` 是适配器配置的单次请求输出上限，不是模型硬上限。仅当请求省略 `maxTokens` 时，`resolveCallConfig()` 才会填入该值；显式上限优先。推理标识符是由适配器持有的不透明字符串，而非核心枚举：同一次解析只接受与已公布标识符完全一致的值，在存在 `defaultEffort` 时填入它，否则保留提供方默认值。异步模型解析器会接收调用方的 signal，并且必须在取消后迅速结束。`prepareCall()` 还会通过 `adapterDefaults` 报告它填入了哪些 `maxTokens` 和 `reasoningEffort` 字段，并让精确适配器注册跨越请求头记录和最终分派，因此 HMR（热模块替换）不会将一个适配器的能力结果与另一个适配器的请求混用；复用其一次性句柄或更改调用配置字段会以 `INVALID_PREPARED_CALL` 失败。不支持的显式或配置推理强度会在提供方 I/O 前以 `UNSUPPORTED_REASONING_EFFORT` 失败。
+`defaultMaxTokens` 是适配器配置的单次请求输出上限，不是模型硬上限。仅当请求省略 `maxTokens` 时，`resolveCallConfig()` 才会填入该值；显式上限优先。推理标识符是由适配器持有的不透明字符串，而非核心枚举：同一次解析只接受与已公布标识符完全一致的值，在存在 `defaultEffort` 时填入它，否则保留提供方默认值。异步模型解析器会接收调用方的 signal，并且必须在取消后迅速结束。`prepareCall()` 还会公开同一次查询得到的脱耦上下文元数据，通过 `adapterDefaults` 报告它填入了哪些 `maxTokens` 和 `reasoningEffort` 字段，并让精确适配器注册跨越请求头记录和最终分派，因此 HMR（热模块替换）不会将一个适配器的能力结果与另一个适配器的请求混用；复用其一次性句柄或更改调用配置字段会以 `INVALID_PREPARED_CALL` 失败。不支持的显式或配置推理强度会在提供方 I/O 前以 `UNSUPPORTED_REASONING_EFFORT` 失败。
 
 ### 事件
 
diff --git a/packages/llm/llm/src/index.ts b/packages/llm/llm/src/index.ts
index 2c078833f9..8b3c839787 100644
--- a/packages/llm/llm/src/index.ts
+++ b/packages/llm/llm/src/index.ts
@@ -11,6 +11,7 @@ import type {
   GenerateOptions,
   LlmConfigurableProvider,
   LlmFailure,
+  LlmModelContext,
   LlmModelInfo,
   LlmResolvedModelInfo,
   LlmProviderInfo,
@@ -125,6 +126,8 @@ export class LlmError extends HarnessError {
 export interface PreparedLlmCall {
   /** Detached, deep-frozen config with any adapter-owned default materialized. */
   readonly config: LlmCallConfig
+  /** Detached context metadata resolved with the registration-bound call. */
+  readonly context?: LlmModelContext
   /** Config fields materialized by the captured adapter rather than proposed by the caller. */
   readonly adapterDefaults: LlmCallConfigAdapterDefaults
   /**
@@ -564,20 +567,21 @@ export class LlmService extends Service {
    * @returns a detached config only when a default must be materialized.
    */
   async resolveCallConfig(config: LlmCallConfig, signal?: AbortSignal): Promise {
-    return this.resolveCallConfigFor(this.registration(config.provider), config, signal)
+    return (await this.resolveCallFor(this.registration(config.provider), config, signal)).config
   }
 
-  private async resolveCallConfigFor(
+  private async resolveCallFor(
     registration: AdapterRegistration,
     config: LlmCallConfig,
     signal?: AbortSignal,
-  ): Promise {
+  ): Promise<{ config: LlmCallConfig; context?: LlmModelContext }> {
     const info = await this.resolveModelInfoFor(registration, config.model, signal)
     const defaulted = config.maxTokens === undefined && info.defaultMaxTokens !== undefined
       ? { ...config, maxTokens: info.defaultMaxTokens }
       : config
     const reasoning = info.reasoning
     const requested = defaulted.reasoningEffort
+    let resolvedConfig = defaulted
     if (reasoning === undefined) {
       if (requested !== undefined) {
         throw new LlmError(
@@ -585,17 +589,22 @@ export class LlmService extends Service {
           'UNSUPPORTED_REASONING_EFFORT',
         )
       }
-      return defaulted
+    } else {
+      const effective = requested ?? reasoning.defaultEffort
+      if (effective !== undefined) {
+        if (!reasoning.efforts.some(effort => effort.id === effective)) {
+          throw new LlmError(
+            `provider "${config.provider}" model "${config.model}" does not support reasoning effort "${effective}"`,
+            'UNSUPPORTED_REASONING_EFFORT',
+          )
+        }
+        if (requested !== effective) resolvedConfig = { ...defaulted, reasoningEffort: effective }
+      }
     }
-    const effective = requested ?? reasoning.defaultEffort
-    if (effective === undefined) return defaulted
-    if (!reasoning.efforts.some(effort => effort.id === effective)) {
-      throw new LlmError(
-        `provider "${config.provider}" model "${config.model}" does not support reasoning effort "${effective}"`,
-        'UNSUPPORTED_REASONING_EFFORT',
-      )
+    return {
+      config: resolvedConfig,
+      ...info.context === undefined ? {} : { context: info.context },
     }
-    return requested === effective ? defaulted : { ...defaulted, reasoningEffort: effective }
   }
 
   /**
@@ -608,13 +617,16 @@ export class LlmService extends Service {
    */
   async prepareCall(config: LlmCallConfig, signal?: AbortSignal): Promise {
     const registration = this.registration(config.provider)
-    const resolved = await this.resolveCallConfigFor(registration, config, signal)
-    const resolvedConfig = deepFreeze(structuredClone(resolved))
+    const resolved = await this.resolveCallFor(registration, config, signal)
+    const resolvedConfig = deepFreeze(structuredClone(resolved.config))
+    const context = resolved.context === undefined
+      ? undefined
+      : deepFreeze(structuredClone(resolved.context))
     const adapterDefaults = deepFreeze({
-      ...config.reasoningEffort === undefined && resolved.reasoningEffort !== undefined
+      ...config.reasoningEffort === undefined && resolvedConfig.reasoningEffort !== undefined
         ? { reasoningEffort: true }
         : {},
-      ...config.maxTokens === undefined && resolved.maxTokens !== undefined
+      ...config.maxTokens === undefined && resolvedConfig.maxTokens !== undefined
         ? { maxTokens: true }
         : {},
     })
@@ -622,6 +634,7 @@ export class LlmService extends Service {
     return Object.freeze({
       config: resolvedConfig,
       adapterDefaults,
+      ...context === undefined ? {} : { context },
       stream: (options: GenerateOptions): AsyncIterable => {
         if (dispatched) {
           throw new LlmError('a prepared LLM call can only be dispatched once', 'INVALID_PREPARED_CALL')
@@ -672,7 +685,7 @@ export class LlmService extends Service {
       const registration = prepared?.registration ?? this.registration(options.provider)
       failures.retryPolicy = registration.retryPolicy
       const resolvedConfig = prepared === undefined
-        ? await this.resolveCallConfigFor(registration, options, options.signal)
+        ? (await this.resolveCallFor(registration, options, options.signal)).config
         : prepared.config
       if (prepared !== undefined && !callConfigEquals(options, resolvedConfig)) {
         throw new LlmError(
@@ -680,7 +693,7 @@ export class LlmService extends Service {
           'INVALID_PREPARED_CALL',
         )
       }
-      const resolvedOptions = prepared !== undefined || callConfigEquals(options, resolvedConfig)
+      const resolvedOptions = callConfigEquals(options, resolvedConfig)
         ? options
         : Object.isFrozen(options)
           ? deepFreeze({ ...options, ...resolvedConfig })
diff --git a/packages/llm/llm/tests/service.spec.ts b/packages/llm/llm/tests/service.spec.ts
index 630b7fe483..47d9f5ee77 100644
--- a/packages/llm/llm/tests/service.spec.ts
+++ b/packages/llm/llm/tests/service.spec.ts
@@ -1134,6 +1134,48 @@ describe('LlmService', () => {
     })).toThrow(expect.objectContaining({ code: 'INVALID_PREPARED_CALL' }))
   })
 
+  it('reuses one exact-model lookup for prepared config and context metadata', async () => {
+    const ctx = new Context()
+    await ctx.plugin(LlmService)
+    let resolutions = 0
+    const source = { contextWindow: 128_000 }
+    const adapter = new class extends ScriptedAdapter {
+      override resolveModel(provider: string, model: string): Promise {
+        resolutions += 1
+        return Promise.resolve({
+          provider,
+          id: model,
+          name: model,
+          description: 'Resolved model',
+          context: source,
+          reasoning: model === 'no-default'
+            ? { efforts: [{ id: ReasoningEffortId('high'), name: 'High' }] }
+            : {
+              efforts: [{ id: ReasoningEffortId('high'), name: 'High' }],
+              defaultEffort: ReasoningEffortId('high'),
+            },
+        })
+      }
+    }(SCRIPT)
+    ctx.llm.registerAdapter(['route'], adapter)
+
+    const prepared = await ctx.llm.prepareCall({ provider: 'route', model: 'model' })
+    source.contextWindow = 64_000
+    expect(prepared.config.reasoningEffort).toBe(ReasoningEffortId('high'))
+    expect(prepared.context).toEqual({ contextWindow: 128_000 })
+    expect(Object.isFrozen(prepared.context)).toBe(true)
+    for await (const _chunk of prepared.stream({
+      ...prepared.config,
+      messages: [],
+    })) { /* drain */ }
+    expect(resolutions).toBe(1)
+
+    const noDefault = await ctx.llm.prepareCall({ provider: 'route', model: 'no-default' })
+    expect(noDefault.config).toEqual({ provider: 'route', model: 'no-default' })
+    expect(noDefault.context).toEqual({ contextWindow: 64_000 })
+    expect(resolutions).toBe(2)
+  })
+
   it('passes cancellation through exact-model resolution', async () => {
     const ctx = new Context()
     await ctx.plugin(LlmService)
diff --git a/packages/llm/token-meter/README.i18n.yaml b/packages/llm/token-meter/README.i18n.yaml
index a4ad4aef87..3b895b9852 100644
--- a/packages/llm/token-meter/README.i18n.yaml
+++ b/packages/llm/token-meter/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/llm/token-meter/README.md
-README.md: 578728ded9cf51a12abcd70d541404e995028f26
-README.zh.md: 9d54ddb4792e6c897af7d57a6f8ae98204caa11d
+README.md: 701893b342f9a93a75bec175634b1054f3d17151
+README.zh.md: a5844e8788422bba669632ed587fb87e1e2a1e58
diff --git a/packages/llm/token-meter/README.md b/packages/llm/token-meter/README.md
index 578728ded9..701893b342 100644
--- a/packages/llm/token-meter/README.md
+++ b/packages/llm/token-meter/README.md
@@ -21,6 +21,24 @@ The fold tracks full request-header snapshots, step boundaries, surface appends
 
 Usage accounting sums disjoint input, cache-read, cache-write, and output buckets; reasoning is not added again. Every successful call records an assistant anchor, including content-less calls. An explicit empty provenance list means a known empty provider stream, while absent legacy provenance conservatively treats the durable assistant output as provider output.
 
+## Session projections
+
+When the composition provides `ctx.sessionProjections`, token-meter registers two units through an optional child fiber.
+
+`tokenUsage` carries the complete durable log's `uncachedInputTokens`, `outputTokens`, `cacheReadTokens`, and `cacheWriteTokens`. Usage chunks are counted even when a request later fails; a final assistant-message usage for the same `(turn, step)` replaces that sample instead of double-counting it. Reasoning remains an output subdivision. The single last-sample slot relies on a session-log ordering property: once a later step reports usage, a legal log never reports usage for an earlier step again.
+
+`contextPressure` carries optional `pressureTokens` — the newest provider-reported prompt size, summing uncached input plus cache reads and writes — and optional `contextWindow` from the newest `request/context` record. Pressure stays absent until a provider reports usage; capacity stays absent for a route whose adapter advertises none. Output is excluded, so the numerator holds still while a turn streams and steps forward when the next request reports its usage.
+
+Both units use the standard projection baseline, live frame, higher-seq-wins store, and JSON checkpoint paths. Unloading token-meter removes both keys. A headless or TUI composition without the projection seam keeps the measurement service's existing behavior.
+
+### Context occupancy is an approximation, by design
+
+`pressureTokens` and `contextWindow` are independent last-wins fields and are **not** one atomic observation of a single request. Switching models pairs the fresh capacity with the previous route's pressure until the next request reports usage, and `pressureTokens` describes the last request rather than the surface as it stands right now.
+
+This is deliberate. An occupancy percentage is a user-facing reference figure, not a billing record or a gating input — nothing in the harness makes decisions from it, and compaction reads `measure()` instead. The TUI status line has always computed occupancy the same way, dividing a `measure()` total by a separately-resolved capacity for the selected model.
+
+Making the pair atomic was tried and rejected: it required a transient non-replayable wire frame, which needed lifecycle fencing against cross-stream reordering and left occupancy blank after every reconnect. The [Agent Note](../../../.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.md) records that comparison. Consumers that need an exact same-boundary figure should call `measure()` at their own request boundary rather than read this projection.
+
 ## Composition
 
 ```yaml
@@ -44,3 +62,4 @@ No direct invalidation; the named consumer owns any request-prefix changes.
 - **Every measurement clones the current surface** — coherent immutable snapshots make reads O(surface), including below-threshold pressure checks.
 - **Provider usage is only reusable for an identical canonical envelope** — prompt, prefix, tools, provider, model, or call-config changes deliberately fall back to full heuristic estimation.
 - **Legacy provenance is conservative** — assistant messages without `sourceEventSeqs` cannot distinguish provider output from listener rewrites, so the fold avoids claiming a known empty or exact chunk stream.
+- **The TUI and browser fixture retain parallel folds** — `tokenUsage` owns durable session-projection semantics; the TUI keeps its live per-step map because its composition does not mount the generic projection seam, while the browser fixture mirrors the unit for standalone demo data.
diff --git a/packages/llm/token-meter/README.zh.md b/packages/llm/token-meter/README.zh.md
index 9d54ddb479..a5844e8788 100644
--- a/packages/llm/token-meter/README.zh.md
+++ b/packages/llm/token-meter/README.zh.md
@@ -21,6 +21,24 @@ fold 跟踪完整请求标头快照、步骤边界、表层追加与替换、成
 
 用量计量会求和不重叠的输入、cache-read、cache-write 与输出 bucket；不会再次添加推理（reasoning）。每次成功调用都会记录一个 assistant 锚点，包括无内容调用。显式空溯源列表表示已知空提供方流，而遗留溯源缺失时，fold 会保守地将持久 assistant 输出视为提供方输出。
 
+## 会话投影
+
+当组合提供 `ctx.sessionProjections` 时，token-meter 会通过一个可选子 fiber 注册两个单元。
+
+`tokenUsage` 携带完整持久日志中的 `uncachedInputTokens`、`outputTokens`、`cacheReadTokens` 和 `cacheWriteTokens`。即使请求随后失败，用量分片仍会计入；同一 `(turn, step)` 的最终 assistant 消息用量会替换该样本，而不是重复计数。推理仍是输出的一个细分项。只保留单个最新样本，依赖的是会话日志的一条顺序性质：一旦某个更晚的步骤报告了用量，合法日志就绝不会再为更早的步骤报告用量。
+
+`contextPressure` 携带可选的 `pressureTokens`（提供方报告的最新提示词规模，为未缓存输入加缓存读取与写入之和），以及来自最新一条 `request/context` 记录的可选 `contextWindow`。提供方报告用量前压力保持缺失；路由适配器未公布容量时容量也保持缺失。输出不计入其中，因此轮次流式输出期间分子保持不动，等到下一个请求报告用量时才前进。
+
+两个单元都使用标准的投影基线、实时帧、seq 高者胜值仓和 JSON 检查点路径。卸载 token-meter 会移除这两个键。不带投影 seam 的 headless 或 TUI 组合会保留测量服务的既有行为。
+
+### 上下文占用率是刻意为之的近似值
+
+`pressureTokens` 与 `contextWindow` 是两个各自后者胜的独立字段，**不是**对单个请求的一次原子观测。切换模型时，新容量会与上一路由的压力配对，直到下一个请求报告用量为止；而 `pressureTokens` 描述的是最后一个请求，不是此刻的表层。
+
+这是刻意的选择。占用率百分比是面向用户的参考数字，既不是计费记录，也不是门控输入：harness 中没有任何环节依据它做决策，压缩改为直接读取 `measure()`。TUI 状态行一直以同样的方式计算占用率，即用 `measure()` 总量除以为所选模型单独解析出的容量。
+
+让这对值保持原子已经尝试过并被否决：它需要一个临时且不可回放的协议帧，进而需要针对跨流重排序的生命周期栅栏，还会让占用率在每次重连后变为空白。[Agent Note（agent 决策记录）](../../../.agents/notes/implemented/architecture/2026-07-29-projected-token-usage-and-request-context.md)记录了这项对比。需要同一边界精确数字的消费方应在自己的请求边界调用 `measure()`，而不是读取该投影。
+
 ## 组合
 
 ```yaml
@@ -44,3 +62,4 @@ fold 跟踪完整请求标头快照、步骤边界、表层追加与替换、成
 - **每次测量都会克隆当前表层**：一致且不可变的快照使读取成为 O(surface)，包括低于阈值的压力检查。
 - **提供方用量只能为完全相同的规范 envelope 复用**：提示词、前缀、工具、提供方、模型或调用配置变更都会有意回退到完整启发式估算。
 - **遗留溯源采取保守策略**：没有 `sourceEventSeqs` 的 assistant 消息无法区分提供方输出与 listener 改写，因此 fold 不会声称已知空流或精确分片流。
+- **TUI 与浏览器 fixture 仍保留并行 fold**：`tokenUsage` 拥有持久会话投影语义；TUI 的组合未挂载通用投影 seam，因此继续维护实时的逐步骤 map，而浏览器 fixture 会为独立 demo 数据镜像该单元。
diff --git a/packages/llm/token-meter/package.json b/packages/llm/token-meter/package.json
index dadd5e8f8d..b058f7cdbb 100644
--- a/packages/llm/token-meter/package.json
+++ b/packages/llm/token-meter/package.json
@@ -15,12 +15,17 @@
       "types": "./lib/types/invariant.d.ts",
       "default": "./lib/invariant.js"
     },
+    "./client": {
+      "types": "./lib/types/client.d.ts",
+      "default": "./lib/types/client.js"
+    },
     "./src/*": "./src/*",
     "./package.json": "./package.json"
   },
   "files": [
     "lib/index.js",
     "lib/invariant.js",
+    "lib/types/**/*.js",
     "lib/types/**/*.d.ts",
     "lib/types/**/*.d.ts.map",
     "src"
@@ -30,15 +35,18 @@
     "@deepseek-ai/dsh-invariants": "^0.0.1",
     "@deepseek-ai/dsh-llm": "^0.0.1",
     "@deepseek-ai/dsh-session": "^0.0.1",
+    "@deepseek-ai/dsh-session-projection": "^0.0.1",
     "cordis": "^4.0.0-rc.7"
   },
   "dependencies": {
-    "schemastery": "^3.18.0"
+    "schemastery": "^3.18.0",
+    "zod": "^4.4.3"
   },
   "devDependencies": {
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@deepseek-ai/dsh-llm": "workspace:^",
     "@deepseek-ai/dsh-session": "workspace:^",
+    "@deepseek-ai/dsh-session-projection": "workspace:^",
     "cordis": "^4.0.0-rc.7"
   }
 }
diff --git a/packages/llm/token-meter/src/client.ts b/packages/llm/token-meter/src/client.ts
new file mode 100644
index 0000000000..1bc02e3073
--- /dev/null
+++ b/packages/llm/token-meter/src/client.ts
@@ -0,0 +1,7 @@
+/**
+ * Client-namespace projection of token-meter's browser-safe types.
+ *
+ * @module @deepseek-ai/dsh-token-meter/client
+ */
+
+export type * from './projection.ts'
diff --git a/packages/llm/token-meter/src/index.ts b/packages/llm/token-meter/src/index.ts
index 644fdd3857..1300343e99 100644
--- a/packages/llm/token-meter/src/index.ts
+++ b/packages/llm/token-meter/src/index.ts
@@ -10,12 +10,15 @@ import { BlockAssembler, deepFreeze } from '@deepseek-ai/dsh-llm'
 import type { ContentBlock, Message, TokenUsage } from '@deepseek-ai/dsh-llm'
 import type { EpochHeader, Session, SessionEvent, SurfaceEvent } from '@deepseek-ai/dsh-session'
 import { canonicalHeader, headerEquals, isSurfaceEvent } from '@deepseek-ai/dsh-session'
+// Type-only: resolves the optional projection registry Context seam.
+import type {} from '@deepseek-ai/dsh-session-projection'
 import type {
   TokenMeasurement,
   TokenMeasurementBaseline,
   TokenMeterConfig,
   TokenSurfaceNode,
 } from './types.ts'
+import { contextPressureProjectionDefinition, tokenUsageProjectionDefinition } from './usage-projection.ts'
 
 export type * from './types.ts'
 
@@ -90,6 +93,13 @@ export class TokenMeterService extends Service {
     super(ctx, 'tokenMeter')
     validateConfigKeys(config)
 
+    // Projection registration is an optional child: headless and TUI
+    // compositions without the generic registry keep the meter's old shape.
+    ctx.inject(['sessionProjections'], (projectionCtx) => {
+      projectionCtx.sessionProjections.register(tokenUsageProjectionDefinition)
+      projectionCtx.sessionProjections.register(contextPressureProjectionDefinition)
+    })
+
     // Readers catch up independently, while eager observation bounds ordinary
     // read latency without creating state for sessions no consumer has read.
     ctx.on('session/event', (session) => {
diff --git a/packages/llm/token-meter/src/invariant.ts b/packages/llm/token-meter/src/invariant.ts
index b8f0cc385a..e0bbe268e1 100644
--- a/packages/llm/token-meter/src/invariant.ts
+++ b/packages/llm/token-meter/src/invariant.ts
@@ -15,8 +15,11 @@ export const name = 'token-meter-invariant'
 export const inject = ['invariants']
 
 /**
- * No runtime invariant: token estimates are per-call outputs and the private session cache is
- * invalidated at its event mutation boundary; neither exposes an independent observation stream.
+ * No runtime invariant: token estimates are per-call outputs and the private
+ * session cache is invalidated at its event mutation boundary. The package's
+ * projection does expose an observation stream, but its schema fixes the JSON
+ * payload and its pure fold replaces same-step samples; totals need not be
+ * monotone when a final usage sample corrects an earlier chunk.
  */
 const install: InvariantInstaller = () => {}
 
diff --git a/packages/llm/token-meter/src/projection.ts b/packages/llm/token-meter/src/projection.ts
new file mode 100644
index 0000000000..2740b4954f
--- /dev/null
+++ b/packages/llm/token-meter/src/projection.ts
@@ -0,0 +1,50 @@
+/**
+ * Pure client-safe token-projection vocabulary.
+ *
+ * @module @deepseek-ai/dsh-token-meter/projection
+ */
+
+/**
+ * Durable cumulative provider usage for a complete session log.
+ *
+ * The four buckets are disjoint. In particular, reasoning tokens are already
+ * included in `outputTokens` and are not accumulated again.
+ */
+export interface TokenUsageProjection {
+  uncachedInputTokens: number
+  outputTokens: number
+  cacheReadTokens: number
+  cacheWriteTokens: number
+}
+
+/**
+ * Approximate context occupancy for a status display.
+ *
+ * The two fields, when present, are deliberately NOT one atomic request
+ * observation: `pressureTokens` is the newest provider-reported prompt size,
+ * `contextWindow` the newest recorded route capacity. Switching models can
+ * therefore pair a fresh capacity with the previous route's pressure until the
+ * next request reports usage. This is an intentional trade — the value is a
+ * user-facing reference, not a billing or gating input — and it matches how
+ * the TUI status line has always computed occupancy. See the token-meter
+ * README for the full rationale.
+ */
+export interface ContextPressureProjection {
+  /**
+   * Provider-reported prompt size of the most recent request: uncached input
+   * plus cache reads and writes. Response output is excluded, so this does not
+   * grow as the current turn streams. Absent until a provider reports usage.
+   */
+  pressureTokens?: number
+  /** Newest recorded route capacity; absent when no adapter advertised one. */
+  contextWindow?: number
+}
+
+declare module '@deepseek-ai/dsh-session-projection/types' {
+  interface SessionProjectionMap {
+    /** Provider-reported usage accumulated across the complete durable log. */
+    tokenUsage: TokenUsageProjection
+    /** Newest request pressure paired with the newest known route capacity. */
+    contextPressure: ContextPressureProjection
+  }
+}
diff --git a/packages/llm/token-meter/src/types.ts b/packages/llm/token-meter/src/types.ts
index 255425b639..be94993f35 100644
--- a/packages/llm/token-meter/src/types.ts
+++ b/packages/llm/token-meter/src/types.ts
@@ -6,6 +6,8 @@
 
 import type { TokenUsage } from '@deepseek-ai/dsh-llm'
 
+export type { ContextPressureProjection, TokenUsageProjection } from './projection.ts'
+
 /** Token-meter plugin configuration; the fixed estimator has no settings. */
 export type TokenMeterConfig = Record
 
diff --git a/packages/llm/token-meter/src/usage-projection.ts b/packages/llm/token-meter/src/usage-projection.ts
new file mode 100644
index 0000000000..302485da8e
--- /dev/null
+++ b/packages/llm/token-meter/src/usage-projection.ts
@@ -0,0 +1,153 @@
+/**
+ * Pure folds for durable provider-reported token usage and context occupancy.
+ */
+
+import { z } from 'zod'
+import type { TokenUsage } from '@deepseek-ai/dsh-llm'
+import type { ProjectionDefinition } from '@deepseek-ai/dsh-session-projection'
+import type { ContextPressureProjection, TokenUsageProjection } from './projection.ts'
+
+interface UsageSample {
+  turn: number
+  step: number
+  buckets: TokenUsageProjection
+}
+
+interface TokenUsageState {
+  totals: TokenUsageProjection
+  last: UsageSample | null
+}
+
+const zeroBuckets = (): TokenUsageProjection => ({
+  uncachedInputTokens: 0,
+  outputTokens: 0,
+  cacheReadTokens: 0,
+  cacheWriteTokens: 0,
+})
+
+const bucketsFrom = (usage: TokenUsage): TokenUsageProjection => ({
+  uncachedInputTokens: usage.inputTokens,
+  outputTokens: usage.outputTokens,
+  cacheReadTokens: usage.cacheReadTokens ?? 0,
+  cacheWriteTokens: usage.cacheWriteTokens ?? 0,
+})
+
+const bucketsEqual = (left: TokenUsageProjection, right: TokenUsageProjection): boolean =>
+  left.uncachedInputTokens === right.uncachedInputTokens
+  && left.outputTokens === right.outputTokens
+  && left.cacheReadTokens === right.cacheReadTokens
+  && left.cacheWriteTokens === right.cacheWriteTokens
+
+const addReplacing = (
+  totals: TokenUsageProjection,
+  previous: TokenUsageProjection | undefined,
+  next: TokenUsageProjection,
+): TokenUsageProjection => ({
+  uncachedInputTokens: totals.uncachedInputTokens - (previous?.uncachedInputTokens ?? 0) + next.uncachedInputTokens,
+  outputTokens: totals.outputTokens - (previous?.outputTokens ?? 0) + next.outputTokens,
+  cacheReadTokens: totals.cacheReadTokens - (previous?.cacheReadTokens ?? 0) + next.cacheReadTokens,
+  cacheWriteTokens: totals.cacheWriteTokens - (previous?.cacheWriteTokens ?? 0) + next.cacheWriteTokens,
+})
+
+const projectionSchema = z.object({
+  uncachedInputTokens: z.number().int().nonnegative(),
+  outputTokens: z.number().int().nonnegative(),
+  cacheReadTokens: z.number().int().nonnegative(),
+  cacheWriteTokens: z.number().int().nonnegative(),
+}).strict()
+
+// Cast for the optional values: under exactOptionalPropertyTypes zod infers
+// `number | undefined` where the interface declares absent-or-number fields.
+const pressureSchema = z.object({
+  pressureTokens: z.number().int().nonnegative().optional(),
+  contextWindow: z.number().int().positive().optional(),
+}).strict() as unknown as z.ZodType
+
+/** Prompt-side pressure of one request: input plus cache traffic, no output. */
+const pressureFrom = (usage: TokenUsage): number =>
+  usage.inputTokens + (usage.cacheReadTokens ?? 0) + (usage.cacheWriteTokens ?? 0)
+
+/**
+ * Token-meter's session projection unit.
+ *
+ * Usage chunks provide an early sample that survives a later request failure;
+ * an assistant message provides the final sample for the same turn/step. A
+ * repeated sample replaces that step's earlier value instead of double
+ * counting it. The single `last` slot relies on the session-log invariant
+ * that usage reports for one turn/step are adjacent: once a later step begins,
+ * a legal log never reports usage for an earlier step again.
+ */
+export const tokenUsageProjectionDefinition:
+ProjectionDefinition<'tokenUsage', TokenUsageState> = {
+  key: 'tokenUsage',
+  schema: projectionSchema,
+  init: () => ({ totals: zeroBuckets(), last: null }),
+  apply: (state, event) => {
+    let turn: number
+    let step: number
+    let usage: TokenUsage
+    if (event.type === 'assistant/chunk' && event.data.chunk.type === 'usage') {
+      ;({ turn, step } = event.data)
+      usage = event.data.chunk.usage
+    } else if (event.type === 'assistant/message' && event.data.usage !== undefined) {
+      ;({ turn, step, usage } = event.data)
+    } else {
+      return state
+    }
+
+    const buckets = bucketsFrom(usage)
+    const previous = state.last !== null
+      && state.last.turn === turn
+      && state.last.step === step
+      ? state.last.buckets
+      : undefined
+    if (previous !== undefined && bucketsEqual(previous, buckets)) return state
+
+    return {
+      totals: addReplacing(state.totals, previous, buckets),
+      last: { turn, step, buckets },
+    }
+  },
+  view: state => state.totals,
+  stateVersion: 1,
+}
+
+/**
+ * Token-meter's context-occupancy projection unit.
+ *
+ * Two independent last-wins slots: the newest usage sample supplies the
+ * numerator, the newest `request/context` record the denominator. Both are
+ * whole values, so replay order alone decides the result and no cross-field
+ * consistency is claimed — the pair is explicitly not one atomic request
+ * observation (see {@link ContextPressureProjection}).
+ *
+ * The numerator is prompt-side only, so it holds still while a turn streams
+ * and steps forward once the next request reports its usage.
+ */
+export const contextPressureProjectionDefinition:
+ProjectionDefinition<'contextPressure', ContextPressureProjection> = {
+  key: 'contextPressure',
+  schema: pressureSchema,
+  init: () => ({}),
+  apply: (state, event) => {
+    if (event.type === 'request/context') {
+      const contextWindow = event.data.contextWindow
+      if (contextWindow === state.contextWindow) return state
+      if (contextWindow !== undefined) return { ...state, contextWindow }
+      const { contextWindow: _removed, ...withoutContextWindow } = state
+      return withoutContextWindow
+    }
+    const usage = event.type === 'assistant/chunk' && event.data.chunk.type === 'usage'
+      ? event.data.chunk.usage
+      : event.type === 'assistant/message'
+        ? event.data.usage
+        : undefined
+    if (usage === undefined) return state
+    const pressureTokens = pressureFrom(usage)
+    return pressureTokens === state.pressureTokens
+      ? state
+      : { ...state, pressureTokens }
+  },
+  view: state => state,
+  stateVersion: 2,
+}
diff --git a/packages/llm/token-meter/tests/token-usage-projection.spec.ts b/packages/llm/token-meter/tests/token-usage-projection.spec.ts
new file mode 100644
index 0000000000..4079916a8c
--- /dev/null
+++ b/packages/llm/token-meter/tests/token-usage-projection.spec.ts
@@ -0,0 +1,333 @@
+import { describe, expect, it } from 'vitest'
+import { Context } from 'cordis'
+import { createMessage, createUserMessage } from '@deepseek-ai/dsh-llm'
+import type { TokenUsage } from '@deepseek-ai/dsh-llm'
+import SessionStore from '@deepseek-ai/dsh-session'
+import type { Session } from '@deepseek-ai/dsh-session'
+import SessionProjectionRegistry from '@deepseek-ai/dsh-session-projection'
+import TokenMeterService from '@deepseek-ai/dsh-token-meter'
+import type { ContextPressureProjection, TokenUsageProjection } from '@deepseek-ai/dsh-token-meter/client'
+
+const ZERO: TokenUsageProjection = {
+  uncachedInputTokens: 0,
+  outputTokens: 0,
+  cacheReadTokens: 0,
+  cacheWriteTokens: 0,
+}
+
+async function harness(): Promise<{
+  ctx: Context
+  session: Session
+  meterFiber: Awaited>
+}> {
+  const ctx = new Context()
+  await ctx.plugin(SessionStore)
+  await ctx.plugin(SessionProjectionRegistry)
+  const meterFiber = await ctx.plugin(TokenMeterService)
+  return { ctx, session: ctx.sessions.create(), meterFiber }
+}
+
+function startStep(session: Session, turn: number, step: number): void {
+  session.append('step/start', { turn, step })
+}
+
+function usageChunk(
+  session: Session,
+  usage: TokenUsage,
+  turn: number,
+  step: number,
+): number {
+  return session.append('assistant/chunk', {
+    turn,
+    step,
+    chunk: { type: 'usage', usage },
+  }).seq
+}
+
+function finalUsage(
+  session: Session,
+  usage: TokenUsage,
+  turn: number,
+  step: number,
+  sourceSeqs: number[],
+): void {
+  session.append('assistant/message', {
+    turn,
+    step,
+    message: createMessage({
+      role: 'assistant',
+      content: [],
+      source: { kind: 'model', provider: 'mock', model: 'mock' },
+    }),
+    usage,
+  }, { surfaceOp: 'append', sourceEventSeqs: sourceSeqs })
+  session.append('step/end', { turn, step })
+}
+
+const projected = (ctx: Context, session: Session): TokenUsageProjection => {
+  const value = ctx.sessionProjections.snapshot(session).values.tokenUsage
+  if (value === undefined) throw new Error('tokenUsage projection is not registered')
+  return value
+}
+
+describe('tokenUsage session projection', () => {
+  it('serves zero buckets for an empty log', async () => {
+    const { ctx, session } = await harness()
+    expect(projected(ctx, session)).toEqual(ZERO)
+  })
+
+  it('does not count a usage chunk and identical final usage twice', async () => {
+    const { ctx, session } = await harness()
+    const changes: unknown[] = []
+    ctx.sessionProjections.onChanged((_session, key, value) => {
+      if (key === 'tokenUsage') changes.push(value)
+    })
+    const usage = {
+      inputTokens: 10,
+      outputTokens: 4,
+      cacheReadTokens: 7,
+      cacheWriteTokens: 2,
+      reasoningTokens: 3,
+    }
+    startStep(session, 1, 1)
+    const source = usageChunk(session, usage, 1, 1)
+    finalUsage(session, usage, 1, 1, [source])
+
+    expect(projected(ctx, session)).toEqual({
+      uncachedInputTokens: 10,
+      outputTokens: 4,
+      cacheReadTokens: 7,
+      cacheWriteTokens: 2,
+    })
+    expect(changes).toHaveLength(1)
+  })
+
+  it('replaces an earlier same-step chunk sample with the final usage', async () => {
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    const source = usageChunk(session, {
+      inputTokens: 10,
+      outputTokens: 2,
+      cacheReadTokens: 3,
+    }, 1, 1)
+    finalUsage(session, {
+      inputTokens: 14,
+      outputTokens: 5,
+      cacheReadTokens: 8,
+      cacheWriteTokens: 1,
+    }, 1, 1, [source])
+
+    expect(projected(ctx, session)).toEqual({
+      uncachedInputTokens: 14,
+      outputTokens: 5,
+      cacheReadTokens: 8,
+      cacheWriteTokens: 1,
+    })
+  })
+
+  it('accumulates disjoint buckets across steps without adding reasoning twice', async () => {
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    const first = usageChunk(session, {
+      inputTokens: 10,
+      outputTokens: 6,
+      reasoningTokens: 5,
+      cacheReadTokens: 2,
+    }, 1, 1)
+    finalUsage(session, {
+      inputTokens: 10,
+      outputTokens: 6,
+      reasoningTokens: 5,
+      cacheReadTokens: 2,
+    }, 1, 1, [first])
+    startStep(session, 1, 2)
+    const second = usageChunk(session, {
+      inputTokens: 20,
+      outputTokens: 9,
+      reasoningTokens: 7,
+      cacheWriteTokens: 4,
+    }, 1, 2)
+    finalUsage(session, {
+      inputTokens: 20,
+      outputTokens: 9,
+      reasoningTokens: 7,
+      cacheWriteTokens: 4,
+    }, 1, 2, [second])
+
+    expect(projected(ctx, session)).toEqual({
+      uncachedInputTokens: 30,
+      outputTokens: 15,
+      cacheReadTokens: 2,
+      cacheWriteTokens: 4,
+    })
+  })
+
+  it('retains a usage chunk when the request produces no final assistant message', async () => {
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    usageChunk(session, { inputTokens: 9, outputTokens: 1 }, 1, 1)
+    session.append('step/end', { turn: 1, step: 1 })
+    expect(projected(ctx, session)).toEqual({
+      uncachedInputTokens: 9,
+      outputTokens: 1,
+      cacheReadTokens: 0,
+      cacheWriteTokens: 0,
+    })
+  })
+
+  it('does not erase historical billing when the visible surface is replaced', async () => {
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    const source = usageChunk(session, { inputTokens: 12, outputTokens: 3 }, 1, 1)
+    finalUsage(session, { inputTokens: 12, outputTokens: 3 }, 1, 1, [source])
+    const before = session.append('user/message', createUserMessage({
+      content: [{ type: 'text', text: 'before compaction' }],
+      source: { kind: 'user' },
+    }), { surfaceOp: 'append' })
+    session.append('user/message', createUserMessage({
+      content: [{ type: 'text', text: 'compacted' }],
+      source: { kind: 'plugin', plugin: 'test' },
+    }), {
+      surfaceOp: { op: 'replace', start: before.seq, end: before.seq },
+      sourceEventSeqs: [before.seq],
+    })
+
+    expect(projected(ctx, session)).toEqual({
+      uncachedInputTokens: 12,
+      outputTokens: 3,
+      cacheReadTokens: 0,
+      cacheWriteTokens: 0,
+    })
+  })
+
+  it('unregisters with the token-meter fiber and restores from a JSON checkpoint', async () => {
+    const { ctx, session, meterFiber } = await harness()
+    startStep(session, 1, 1)
+    usageChunk(session, { inputTokens: 8, outputTokens: 2, cacheReadTokens: 5 }, 1, 1)
+    const checkpoint = JSON.parse(JSON.stringify(
+      ctx.sessionProjections.checkpoint(session),
+    )) as ReturnType
+
+    await meterFiber.dispose()
+    expect(ctx.sessionProjections.snapshot(session).values).not.toHaveProperty('tokenUsage')
+
+    await ctx.plugin(TokenMeterService)
+    expect(ctx.sessionProjections.viewCheckpoint(checkpoint).tokenUsage).toEqual({
+      uncachedInputTokens: 8,
+      outputTokens: 2,
+      cacheReadTokens: 5,
+      cacheWriteTokens: 0,
+    })
+  })
+})
+
+const pressure = (ctx: Context, session: Session): ContextPressureProjection => {
+  const value = ctx.sessionProjections.snapshot(session).values.contextPressure
+  if (value === undefined) throw new Error('contextPressure projection is not registered')
+  return value
+}
+
+function recordContext(session: Session, model: string, contextWindow?: number): void {
+  session.append('request/context', {
+    provider: 'mock',
+    model,
+    ...contextWindow === undefined ? {} : { contextWindow },
+  })
+}
+
+describe('contextPressure session projection', () => {
+  it('serves no pressure or capacity for an empty log', async () => {
+    const { ctx, session } = await harness()
+    expect(pressure(ctx, session)).toEqual({})
+  })
+
+  it('does not synthesize zero pressure before a provider usage sample', async () => {
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    recordContext(session, 'small', 64_000)
+    expect(pressure(ctx, session)).toEqual({ contextWindow: 64_000 })
+  })
+
+  it('sums prompt-side buckets and excludes response output', async () => {
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    usageChunk(session, {
+      inputTokens: 100,
+      outputTokens: 4_000,
+      cacheReadTokens: 20,
+      cacheWriteTokens: 5,
+    }, 1, 1)
+    // Output is deliberately absent: occupancy describes the prompt that was
+    // sent, so it holds still while the response streams.
+    expect(pressure(ctx, session).pressureTokens).toBe(125)
+  })
+
+  it('replaces pressure with the newest request rather than accumulating', async () => {
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    const first = usageChunk(session, { inputTokens: 100, outputTokens: 10 }, 1, 1)
+    finalUsage(session, { inputTokens: 100, outputTokens: 10 }, 1, 1, [first])
+    startStep(session, 2, 1)
+    usageChunk(session, { inputTokens: 250, outputTokens: 10 }, 2, 1)
+    expect(pressure(ctx, session).pressureTokens).toBe(250)
+  })
+
+  it('carries the newest recorded capacity and replaces it on a model switch', async () => {
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    recordContext(session, 'small', 64_000)
+    usageChunk(session, { inputTokens: 100, outputTokens: 10 }, 1, 1)
+    expect(pressure(ctx, session)).toEqual({ pressureTokens: 100, contextWindow: 64_000 })
+    recordContext(session, 'large', 256_000)
+    expect(pressure(ctx, session)).toEqual({ pressureTokens: 100, contextWindow: 256_000 })
+  })
+
+  it('removes an older capacity when the newest route advertises none', async () => {
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    recordContext(session, 'small', 64_000)
+    usageChunk(session, { inputTokens: 100, outputTokens: 10 }, 1, 1)
+    recordContext(session, 'unknown')
+    expect(pressure(ctx, session)).toEqual({ pressureTokens: 100 })
+  })
+
+  it('pushes no change for unrelated events or a restated capacity', async () => {
+    // The registry gates its change feed on Object.is, so a unit that rebuilt
+    // state for an event it does not care about would push phantom updates.
+    const { ctx, session } = await harness()
+    startStep(session, 1, 1)
+    recordContext(session, 'small', 64_000)
+    usageChunk(session, { inputTokens: 100, outputTokens: 10 }, 1, 1)
+    const changed: string[] = []
+    ctx.sessionProjections.onChanged((_session, key) => { changed.push(key) })
+
+    session.append('todo/write', { todos: [] })
+    expect(changed).not.toContain('contextPressure')
+    // A repeated capacity record for the same window is also a no-op.
+    recordContext(session, 'small', 64_000)
+    expect(changed).not.toContain('contextPressure')
+    // A real capacity change still reports.
+    recordContext(session, 'large', 256_000)
+    expect(changed).toContain('contextPressure')
+  })
+
+  it('restores from a JSON checkpoint and unregisters with the token-meter fiber', async () => {
+    const { ctx, session, meterFiber } = await harness()
+    startStep(session, 1, 1)
+    recordContext(session, 'small', 64_000)
+    usageChunk(session, { inputTokens: 42, outputTokens: 2 }, 1, 1)
+    const checkpoint = JSON.parse(JSON.stringify(
+      ctx.sessionProjections.checkpoint(session),
+    )) as ReturnType
+    expect(checkpoint.contextPressure?.ver).toBe(2)
+
+    await meterFiber.dispose()
+    expect(ctx.sessionProjections.snapshot(session).values).not.toHaveProperty('contextPressure')
+
+    await ctx.plugin(TokenMeterService)
+    expect(ctx.sessionProjections.viewCheckpoint(checkpoint).contextPressure).toEqual({
+      pressureTokens: 42,
+      contextWindow: 64_000,
+    })
+  })
+})
diff --git a/packages/llm/token-meter/tsconfig.json b/packages/llm/token-meter/tsconfig.json
index 481fad6e15..92081a860b 100644
--- a/packages/llm/token-meter/tsconfig.json
+++ b/packages/llm/token-meter/tsconfig.json
@@ -23,6 +23,9 @@
     {
       "path": "../../core/session"
     },
+    {
+      "path": "../../session-projection/session-projection"
+    },
     {
       "path": "../../support/invariants"
     }
diff --git a/packages/pty/pty-local/README.i18n.yaml b/packages/pty/pty-local/README.i18n.yaml
index 97c0b693e3..48ae675425 100644
--- a/packages/pty/pty-local/README.i18n.yaml
+++ b/packages/pty/pty-local/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/pty/pty-local/README.md
-README.md: 6f243a6edf3ab8bc228cfda3f6b3b774dabadcbb
-README.zh.md: 0cf2981332fa41dab22a496de5ae302066fbdba8
+README.md: ba05495318127b63b3d2a6a60ec743e1ff1c5821
+README.zh.md: 81987ea0685d761507b535b7ed6eefa0888fbd54
diff --git a/packages/pty/pty-local/README.md b/packages/pty/pty-local/README.md
index 6f243a6edf..ba05495318 100644
--- a/packages/pty/pty-local/README.md
+++ b/packages/pty/pty-local/README.md
@@ -6,7 +6,7 @@ Local Linux/macOS `node-pty` backend for `ctx.pty`; loading it on another platfo
 
 ## Plugin (`pty-local`)
 
-The plugin injects `pty`, `sandbox`, and `sandboxPolicy`, then registers the configured backend type (`shell`). `danger-full-access` starts the shell directly; confined modes wrap the exact shell argv through `ctx.sandbox`. The effective session mode is resolved at spawn. A change to a different effective mode is rejected before its `sandbox/mode` event commits while that owner has an open PTY or a spawn in progress; the fence is attached to the exact owner and therefore outlives a local-provider reload that retains existing sessions. Wait for creation to settle and close the sessions before changing modes, so a terminal opened with wider access cannot survive a downgrade.
+The plugin injects `pty`, `sandbox`, and `sandboxPolicy`, then registers the configured backend type (`shell`). `danger-full-access` starts the shell directly; confined modes wrap the exact shell argv through `ctx.sandbox`. At spawn, one `ctx.sandboxPolicy.resolve({ session })` call supplies both the effective mode and the session workspace root; the same root is the default shell cwd when the caller omits one. A change to a different effective mode is rejected before its `sandbox/mode` event commits while that owner has an open PTY or a spawn in progress; the fence is attached to the exact owner and therefore outlives a local-provider reload that retains existing sessions. Wait for creation to settle and close the sessions before changing modes, so a terminal opened with wider access cannot survive a downgrade.
 
 Linux readiness combines a foreground-verified private bash prompt marker, foreground-process-group syscall inspection, silence fallback, and absolute timeout. macOS uses the verified prompt marker plus silence/timeout because it has no `/proc` syscall surface. A marker is not ready until printable prompt text arrives, including when the OSC marker and `PS1` are split across data callbacks; when bash prints the marker before the kernel publishes its return to the foreground process group, polling retains the candidate for `handoffGraceMs` past the ordinary silence bound so a coincident handoff can win; that grace must cover at least one `pollIntervalMs` and is rejected at load otherwise. An interactive child that inherits `PROMPT_COMMAND` therefore cannot suppress inferred-idle readiness until the absolute timeout. Unrecognized or unreadable process state is never a positive exact-idle signal. A foreground group's stdin wait that already existed before a send is likewise not post-write readiness: the same group must be observed outside that wait before a later wait can settle the send, while a changed foreground group is new evidence. During unpublished startup, a fallback requires observed output; zero-output silence cannot publish an empty session, and timeout rejects the spawn. Cancellation closes the unpublished shell and rejects with the caller's exact abort reason even when its foreground process group is not observable yet; if that close fails, `PtyBackendCleanupError` separately preserves the cleanup failure for registry disposal. Incomplete terminal-control sequences are bounded by `maxReadBytes` and discarded through their terminator after crossing that limit; a trailing carriage return is carried across callbacks so split CRLF becomes one newline.
 
@@ -14,19 +14,19 @@ Send cancellation resolves the current foreground process group and delivers a r
 
 ## Model Experience
 
-### Indirect consumer
+### Current file policy and indirect consumer
 
 #### What the model sees
 
-Nothing directly. Through `@deepseek-ai/dsh-tool-pty`, the model may receive bounded MOTD, send deltas, scrollback pages, readiness reasons, and cleanup errors.
+The policy owner contributes capability-neutral `sandbox:policy` context. Through `@deepseek-ai/dsh-tool-pty` or another PTY consumer, the model may also receive bounded MOTD, send deltas, scrollback pages, readiness reasons, and cleanup errors.
 
 #### Token effect
 
-None until a consumer returns bounded backend output. Retained PTY scrollback is not placed in model history by this package.
+The current-policy clause is present while this backend is mounted. Retained PTY scrollback is not placed in model history until a consumer returns bounded output.
 
 #### KV Cache effect
 
-No direct invalidation; the consumer owns prompts, schemas, and appended results.
+A standing-policy change appends an owner-rendered superseding runtime-context snapshot after retained history; consumer results remain append-only.
 
 ## Known Limitations and Deferred Work
 
diff --git a/packages/pty/pty-local/README.zh.md b/packages/pty/pty-local/README.zh.md
index 0cf2981332..81987ea068 100644
--- a/packages/pty/pty-local/README.zh.md
+++ b/packages/pty/pty-local/README.zh.md
@@ -6,7 +6,7 @@
 
 ## 插件（`pty-local`）
 
-该插件注入 `pty`、`sandbox` 和 `sandboxPolicy`，然后注册所配置的后端类型（`shell`）。`danger-full-access` 会直接启动 shell；受限模式则通过 `ctx.sandbox` 包装确切的 shell argv。系统在 spawn 时解析会话的实际模式。当某个所有者存在开放的 PTY 或正在进行 spawn 时，如果配置变更会得到不同的实际模式，系统会在对应 `sandbox/mode` 事件提交前拒绝该变更。该限制绑定到确切所有者，因此即使本地提供方重新加载并保留现有会话，它仍然有效。更改模式前，请等待创建完成并关闭会话，避免以更宽权限打开的终端在权限降级后继续存在。
+该插件注入 `pty`、`sandbox` 和 `sandboxPolicy`，然后注册所配置的后端类型（`shell`）。`danger-full-access` 会直接启动 shell；受限模式则通过 `ctx.sandbox` 包装确切的 shell argv。Spawn 时，一次 `ctx.sandboxPolicy.resolve({ session })` 调用会同时给出实际模式与会话工作区根目录；调用方省略 cwd 时，同一根目录也是 shell 的默认 cwd。当某个所有者存在开放的 PTY 或正在进行 spawn 时，如果配置变更会得到不同的实际模式，系统会在对应 `sandbox/mode` 事件提交前拒绝该变更。该限制绑定到确切所有者，因此即使本地提供方重新加载并保留现有会话，它仍然有效。更改模式前，请等待创建完成并关闭会话，避免以更宽权限打开的终端在权限降级后继续存在。
 
 Linux 的就绪检测结合以下机制：由前台状态验证的私有 bash 提示符标记、前台进程组 syscall 检查、静默回退和绝对超时。macOS 没有 `/proc` syscall 接口，因此使用经过验证的提示符标记以及静默／超时。当可打印的提示符文本尚未到达时，即使 OSC 标记和 `PS1` 被拆到多个数据回调中，系统也不会把标记视为就绪。如果 bash 在内核发布其重新取得前台进程组的状态前打印标记，轮询会在普通静默上限之后再保留该候选状态 `handoffGraceMs`，使恰好同时发生的前台交接有机会胜出；该宽限至少要覆盖一个 `pollIntervalMs`，否则加载时即被拒绝。因此，继承 `PROMPT_COMMAND` 的交互式子进程无法一直抑制推断空闲就绪直至绝对超时。无法识别或读取的进程状态绝不会作为精确空闲的正向信号。同样，一次 send 之前就已存在的前台进程组 stdin 等待并不代表写入后就绪：必须先观察到同一进程组脱离该等待，之后再次进入等待才能使该次 send 完成；前台进程组发生变化则构成新的证据。尚未发布的启动过程中，回退路径要求已经观察到输出；零输出静默不能发布空会话，超时则拒绝 spawn。取消操作会关闭尚未发布的 shell，并以调用方提供的确切中止原因拒绝，即使当时还无法观察其前台进程组。如果关闭失败，`PtyBackendCleanupError` 会单独保留清理失败，供注册表 dispose（资源释放）时处理。未完成的终端控制序列受 `maxReadBytes` 限制；超过上限后，系统会丢弃内容直到其终止符。末尾的回车会跨回调保留，使拆分的 CRLF 合并为一个换行。
 
@@ -14,19 +14,19 @@ Linux 的就绪检测结合以下机制：由前台状态验证的私有 bash 
 
 ## 模型体验
 
-### 间接消费方
+### 当前文件策略与间接消费方
 
 #### 模型看到的内容
 
-没有直接可见内容。模型通过 `@deepseek-ai/dsh-tool-pty` 可能收到有界的 MOTD、发送增量、scrollback 页、就绪原因和清理错误。
+策略归属方会贡献与具体能力无关的 `sandbox:policy` 上下文。模型通过 `@deepseek-ai/dsh-tool-pty` 或其他 PTY 消费方还可能收到有界的 MOTD、发送增量、scrollback 页、就绪原因和清理错误。
 
 #### Token 影响
 
-消费方返回有界的后端输出前没有影响。此包（package）不会把保留的 PTY scrollback 放入模型历史。
+装载该后端期间，当前策略子句会一直存在。消费方返回有界输出前，保留的 PTY scrollback 不会进入模型历史。
 
 #### KV Cache 影响
 
-不会直接使 KV Cache 失效；提示词、schema 与追加结果由消费方负责。
+常驻策略发生变化时，会在保留的历史之后追加一份由归属方渲染、取代先前状态的运行时上下文快照；消费方结果保持仅追加。
 
 ## 已知限制与暂缓事项
 
diff --git a/packages/pty/pty-local/src/index.ts b/packages/pty/pty-local/src/index.ts
index d768d6bfa8..e59d53446a 100644
--- a/packages/pty/pty-local/src/index.ts
+++ b/packages/pty/pty-local/src/index.ts
@@ -12,7 +12,7 @@ import type { Session, SessionEvent } from '@deepseek-ai/dsh-session'
 import { PtyBackendCleanupError } from '@deepseek-ai/dsh-pty'
 import { scrubbedParentEnv } from '@deepseek-ai/dsh-subprocess'
 import type { PtyBackend, PtyBackendSpawnSpec } from '@deepseek-ai/dsh-pty'
-import type { SandboxMode } from '@deepseek-ai/dsh-sandbox'
+import type { SandboxExecutionPolicy } from '@deepseek-ai/dsh-sandbox'
 import { effectiveSandboxMode } from '@deepseek-ai/dsh-sandbox-policy'
 import { type Config, type ResolvedConfig, validateConfig } from './config.ts'
 import { createProcessInspector } from './process-inspector.ts'
@@ -71,14 +71,11 @@ function childEnvironment(spec: PtyBackendSpawnSpec): NodeJS.ProcessEnv {
   }
 }
 
-function spawnArgv(ctx: Context, config: ResolvedConfig, spec: PtyBackendSpawnSpec): string[] {
+function spawnArgv(ctx: Context, config: ResolvedConfig, policy: SandboxExecutionPolicy): string[] {
   const argv = [config.shellPath, ...config.shellArgs]
-  const mode: SandboxMode = effectiveSandboxMode(spec.owner.session.events) ?? ctx.sandboxPolicy.defaultMode
-  if (mode === 'danger-full-access') return argv
-  return ctx.sandbox.confine(argv, {
-    mode: mode,
-    workspaceRoot: ctx.sandboxPolicy.workspaceRoot,
-  }).argv
+  if (policy.mode === 'danger-full-access') return argv
+  // Re-state the discriminant because object spread does not preserve its narrowed type.
+  return ctx.sandbox.confine(argv, { ...policy, mode: policy.mode }).argv
 }
 
 /** Local shell backend registered under the configured type. */
@@ -102,14 +99,15 @@ export class LocalPtyBackend implements PtyBackend {
   async spawn(spec: PtyBackendSpawnSpec): Promise {
     spec.signal?.throwIfAborted()
     ensureSandboxModeFence(this.ctx, spec.owner)
-    const argv = spawnArgv(this.ctx, this.config, spec)
+    const policy = this.ctx.sandboxPolicy.resolve({ session: spec.owner.session })
+    const argv = spawnArgv(this.ctx, this.config, policy)
     const file = argv[0]
     if (file === undefined) throw new Error('pty-local: sandbox returned empty argv')
     const options: IPtyForkOptions = {
       name: 'dumb',
       cols: this.config.cols,
       rows: this.config.rows,
-      cwd: spec.cwd ?? this.ctx.sandboxPolicy.workspaceRoot,
+      cwd: spec.cwd ?? policy.workspaceRoot,
       env: childEnvironment(spec),
     }
     const terminal = this.spawnTerminal(file, argv.slice(1), options)
diff --git a/packages/pty/pty-local/tests/index.spec.ts b/packages/pty/pty-local/tests/index.spec.ts
index 83adfc066c..f04fff74ba 100644
--- a/packages/pty/pty-local/tests/index.spec.ts
+++ b/packages/pty/pty-local/tests/index.spec.ts
@@ -38,10 +38,13 @@ function config(): ResolvedConfig {
   }
 }
 
-function agent(ctx: Context): Agent {
+function agent(ctx: Context, cwd?: string): Agent {
   const id = SessionId('agent')
   return {
-    id, options: {}, session: new Session(id), status: 'idle', acceptsNextStep: false, ctx,
+    id,
+    options: {},
+    session: new Session(id, undefined, { version: 0, id, createdAt: 0, ...cwd === undefined ? {} : { cwd } }),
+    status: 'idle', acceptsNextStep: false, ctx,
     followup: () => {}, steer: () => {}, inject: () => {}, send: () => {}, updateInbox: () => 'not-found', reserveTurnAdmission: () => undefined, cancel() {}, whenIdle: () => Promise.resolve(),
   }
 }
@@ -125,10 +128,10 @@ describe('LocalPtyBackend startup rollback', () => {
     } satisfies Partial))
   })
 
-  it('wraps confined argv, scrubs the environment, and returns initialized sessions', async () => {
+  it('resolves session mode and root together before wrapping the shell', async () => {
     const ctx = new Context()
     await ctx.plugin(RecordingSandbox)
-    await ctx.plugin(SandboxPolicyService, { mode: 'workspace-write', workspaceRoot: '/workspace' })
+    await ctx.plugin(SandboxPolicyService, { mode: 'read-only', workspaceRoot: '/deployment-fallback' })
     const terminal = {} as IPty
     let spawned: { file: string; args: string[]; options: IPtyForkOptions } | undefined
     const spawnTerminal = ((file: string, args: string[], options: IPtyForkOptions) => {
@@ -146,8 +149,10 @@ describe('LocalPtyBackend startup rollback', () => {
     )
     const previous = process.env.PTY_TEST_SECRET
     process.env.PTY_TEST_SECRET = 'must-not-leak'
+    const owner = agent(ctx, '/session-workspace')
+    setSandboxMode(owner.session, 'workspace-write')
     try {
-      expect(await backend.spawn({ ...spec(agent(ctx)), cwd: '/work' })).toBe(session)
+      expect(await backend.spawn(spec(owner))).toBe(session)
     } finally {
       if (previous === undefined) delete process.env.PTY_TEST_SECRET
       else process.env.PTY_TEST_SECRET = previous
@@ -157,7 +162,7 @@ describe('LocalPtyBackend startup rollback', () => {
       file: '/sandbox',
       args: ['--', '/bin/bash', '-i'],
       options: {
-        name: 'dumb', cols: 80, rows: 24, cwd: '/work',
+        name: 'dumb', cols: 80, rows: 24, cwd: '/session-workspace',
         env: {
           TERM: 'dumb', PAGER: 'cat', GIT_PAGER: 'cat', PS1: 'dsh> ', BASH_SILENCE_DEPRECATION_WARNING: '1',
           DSH_SHELL: '1', DSH_SESSION_ID: 'agent', DSH_PTY_SESSION_ID: 'pty-1',
@@ -166,6 +171,10 @@ describe('LocalPtyBackend startup rollback', () => {
     })
     expect(spawned?.options.env?.PTY_TEST_SECRET).toBeUndefined()
     expect(initialized).toHaveBeenCalledWith(undefined)
+    expect((ctx.sandbox as RecordingSandbox).calls).toEqual([{
+      argv: ['/bin/bash', '-i'],
+      policy: { mode: 'workspace-write', workspaceRoot: '/session-workspace' },
+    }])
   })
 
   it('composes the default local session around a spawned terminal', async () => {
diff --git a/packages/sandbox/sandbox-policy/README.i18n.yaml b/packages/sandbox/sandbox-policy/README.i18n.yaml
index b21c8d885a..0b626d5343 100644
--- a/packages/sandbox/sandbox-policy/README.i18n.yaml
+++ b/packages/sandbox/sandbox-policy/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/sandbox/sandbox-policy/README.md
-README.md: dca54330bc888af9ecac21aa92019d8a2b0140bd
-README.zh.md: a201d48c81f563fc3d85495e964bb67432517a3c
+README.md: b2512790c5cf5b3a06523cf91b50dd5d288b1522
+README.zh.md: dda98b7aa4775ac2453704295df87c3c92025093
diff --git a/packages/sandbox/sandbox-policy/README.md b/packages/sandbox/sandbox-policy/README.md
index dca54330bc..b2512790c5 100644
--- a/packages/sandbox/sandbox-policy/README.md
+++ b/packages/sandbox/sandbox-policy/README.md
@@ -2,11 +2,11 @@
 
 English | [中文](README.zh.md)
 
-The single owner of sandbox-policy resolution: the deployment's default [`SandboxMode`](../sandbox/README.md) and fallback root, plus each session's durable mode override and immutable workspace root. Every enforcing capability family receives one resolved mode-and-root policy per call.
+The single owner of sandbox-policy resolution: the deployment's default [`SandboxMode`](../sandbox/README.md) and fallback root, plus each session's durable mode override and immutable workspace root. Every enforcing capability receives one resolved mode-and-root policy per call; before each request, the model receives the current policy without a separate capability inventory.
 
 ## Why a shared home
 
-Two families enforce the same mode vocabulary: the sandboxed bash executor (`@deepseek-ai/dsh-bash-sandbox`) and the sandboxed filesystem provider (`@deepseek-ai/dsh-fs-sandbox`). If each resolved its own `mode` + `workspaceRoot`, the two could drift into a split world — bash confined to one root while fs fences another, exactly what [the sandbox RFC](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md) warns against. Both tool layers resolve policy through `ctx.sandboxPolicy`, and both enforcing backends consume that complete per-call result. The [cross-family fs sandbox RFC](../../../.agents/notes/implemented/feature/2026-07-14-cross-family-fs-sandbox.md) records the shared-policy decision.
+Filesystem tools, one-shot bash commands, and terminal sessions may enforce the same mode vocabulary in different combinations. If each resolved its own `mode` + `workspaceRoot`, they could drift into a split world, exactly what [the sandbox Agent Note](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md) warns against. Each enforcing backend consumes the complete owner-resolved policy, while the current context describes only what that policy means for any available operation the DSH file sandbox enforces. The [cross-family fs sandbox Agent Note](../../../.agents/notes/implemented/feature/2026-07-14-cross-family-fs-sandbox.md) records the shared-policy decision.
 
 ## Config
 
@@ -17,25 +17,53 @@ Two families enforce the same mode vocabulary: the sandboxed bash executor (`@de
 
 - `ctx.sandboxPolicy.resolve({ session?, mode? })` — resolves one complete per-call policy. An explicit approved mode outranks the session's last `sandbox/mode` event, which outranks `defaultMode`; the session's immutable `cwd` is canonicalized with filesystem semantics before becoming `workspaceRoot`, otherwise the configured fallback applies. Canonicalization precedes lexical normalization so `symlink/..` agrees with process working-directory resolution.
 - `ctx.sandboxPolicy.defaultMode` / `ctx.sandboxPolicy.workspaceRoot` — the deployment default and fallback root used by `resolve()`.
+- `sandbox:policy` — a request-time cache-safe context contribution derived directly from `resolve({ session })`. It states the mode's capability-neutral file-effect contract and the canonical session workspace under `workspace-write`; tool owners retain operation-specific denial and escalation guidance.
 - `effectiveSandboxMode(events)` — the pure fold of a session's `sandbox/mode` events (the last switch wins, or `undefined`), used inside `resolve()`.
 - `setSandboxMode(session, mode)` — THE write path for a per-session override: appends exactly one `sandbox/mode` event. The switch IS its event; nothing mutates the mode out of band.
 - `SANDBOX_MODES` — every mode, for option advertisement and runtime validation.
 
-The optional `./invariant` companion rejects a forged durable `sandbox/mode` event whose value falls outside that closed vocabulary; Session and its companion own the surrounding storage and core execution-enclosure rules.
+The optional `./invariant` companion rejects a forged durable `sandbox/mode` event whose value falls outside that closed vocabulary; Session and its companion own the surrounding storage and core execution-enclosure rules. The agent loop logs the assembled full runtime-context snapshot as a sourced `user/message`, so exact policy input remains reconstructable without an in-memory “last told” mirror.
 
 ## The per-session store
 
-A runtime switch is one log-only `sandbox/mode` event on the session it applies to. `effective = explicit grant ?? fold(events) ?? deployment default`, so an override survives restart by replay and two sessions never see each other's state. Workspace identity does not need another event: the immutable `SessionHeader.cwd` recorded at creation is the root for every call in that session. The event is log-only (the `approval/*` precedent): the model learns the mode from the enforcing tools' denial markers, never from the event.
+A runtime switch is one log-only `sandbox/mode` event on the session it applies to. `effective = explicit grant ?? fold(events) ?? deployment default`, so an override survives restart by replay and two sessions never see each other's state. Workspace identity does not need another event: the immutable `SessionHeader.cwd` recorded at creation is the root for every call in that session. The event stays log-only; before the next request, the owner contributes the current fact to the full runtime-context snapshot.
 
 ## Model Experience
 
-Indirectly, through `dsh-tool-bash` and `dsh-tool-fs`, which render the effective mode this service holds in their `[sandbox: …]` denial markers and escalation prompts; the `sandbox/mode` event itself never reaches the model.
+### Current file sandbox policy
+
+#### What the model sees
+
+One `sandbox:policy` contribution in the current runtime-context snapshot for every agent session. It does not enumerate mounted capabilities. Tool plugins retain operation and escalation guidance, approval policy contributes separately to the same snapshot, and plan guidance remains `dsh-plan-mode`'s system section.
+
+##### Read-only
+
+```markdown
+Current DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns.
+```
+
+##### Workspace-write
+
+```markdown
+Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: "". Some platform temporary areas may also be writable.
+```
+
+##### Danger-full-access
+
+```markdown
+Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.
+```
+
+#### Token effect
+
+One concise durable context message on the first request and each effective policy change; unchanged requests add nothing. `workspace-write` carries only the canonical session workspace path; platform-specific temporary paths are summarized without adding host-dependent bytes.
 
 #### KV Cache effect
 
-No direct invalidation; the named consumers own any request-prefix changes, and the mode is deliberately absent from the prompt.
+The stable system prompt remains byte-identical across mode changes. A changed full context snapshot is appended after retained history, preserving the prior cached prefix; subsequent unchanged requests reuse that retained snapshot.
 
 ## Known Limitations and Deferred Work
 
 - **One primary workspace root per session** — policy resolves `SessionHeader.cwd`; extra writable roots are not part of `SandboxExecutionPolicy`.
 - **File-effect modes only** — `SandboxMode` governs file effects; network and process policy are outside its vocabulary, so no knob here restricts them.
+- **Temporary areas are deliberately summarized** — enforcing backends grant different platform temporary areas, which are selected after policy resolution and therefore cannot be enumerated truthfully in the current context.
diff --git a/packages/sandbox/sandbox-policy/README.zh.md b/packages/sandbox/sandbox-policy/README.zh.md
index a201d48c81..dda98b7aa4 100644
--- a/packages/sandbox/sandbox-policy/README.zh.md
+++ b/packages/sandbox/sandbox-policy/README.zh.md
@@ -2,11 +2,11 @@
 
 [English](README.md) | 中文
 
-沙箱策略解析的唯一归属位置：部署默认 [`SandboxMode`](../sandbox/README.md) 与回退根目录，加上每个会话的持久模式覆盖和不可变工作区根目录。每个强制执行策略的能力家族在每次调用时都会收到一项解析完成的模式与根目录策略。
+沙箱策略解析的唯一归属位置：部署默认 [`SandboxMode`](../sandbox/README.md) 与回退根目录，加上每个会话的持久模式覆盖和不可变工作区根目录。每项负责强制执行的能力在每次调用时都会收到一项解析完成的模式与根目录策略；模型在每次请求前会收到当前策略，而不会另收一份能力清单。
 
 ## 为何需要共享归属位置
 
-两个家族强制执行同一套模式词汇：沙箱化 bash 执行器（`@deepseek-ai/dsh-bash-sandbox`）与沙箱化文件系统提供方（`@deepseek-ai/dsh-fs-sandbox`）。如果两者各自解析 `mode` + `workspaceRoot`，就可能漂移成分裂世界：bash 限制在一个根目录，fs 却隔离另一个根目录，正是[沙箱 RFC](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md)所警告的情况。两个工具层都通过 `ctx.sandboxPolicy` 解析策略，两个强制执行后端也都消费完整的逐调用结果。[跨家族 fs 沙箱 RFC](../../../.agents/notes/implemented/feature/2026-07-14-cross-family-fs-sandbox.md)记录了共享策略决策。
+文件系统工具、一次性 bash 命令和终端会话可以用不同组合强制执行同一套模式词汇。如果各自解析 `mode` + `workspaceRoot`，就可能漂移成分裂世界，正是[沙箱 Agent Note](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md)所警告的情况。每个强制执行后端都会消费归属方解析出的完整策略，而当前上下文只说明该策略对于任何受 DSH 文件沙箱强制执行的可用操作有何含义。[跨家族 fs 沙箱 Agent Note](../../../.agents/notes/implemented/feature/2026-07-14-cross-family-fs-sandbox.md)记录了共享策略决策。
 
 ## 配置
 
@@ -17,25 +17,53 @@
 
 - `ctx.sandboxPolicy.resolve({ session?, mode? })`：解析一项完整的逐调用策略。显式批准的模式优先于会话最后一条 `sandbox/mode` 事件，后者又优先于 `defaultMode`；会话不可变的 `cwd` 会先按文件系统语义规范化，再成为 `workspaceRoot`，否则使用配置的回退值。规范化先于词法归一化，因此 `symlink/..` 与进程工作目录解析保持一致。
 - `ctx.sandboxPolicy.defaultMode`／`ctx.sandboxPolicy.workspaceRoot`：`resolve()` 使用的部署默认值与回退根目录。
+- `sandbox:policy`：直接派生自 `resolve({ session })` 的请求时缓存安全上下文贡献。它说明该模式中与具体能力无关的文件效果契约，以及 `workspace-write` 下规范化的会话工作区；工具归属方仍负责操作特定的拒绝与升权引导。
 - `effectiveSandboxMode(events)`：会话 `sandbox/mode` 事件的纯 fold（最后一次切换胜出，没有则为 `undefined`），在 `resolve()` 内使用。
 - `setSandboxMode(session, mode)`：逐会话覆盖的唯一写入路径：恰好追加一条 `sandbox/mode` 事件。切换本身就是事件；不会在带外修改模式。
 - `SANDBOX_MODES`：所有模式，用于选项展示与运行时验证。
 
-可选的 `./invariant` 配套组件会拒绝伪造的持久 `sandbox/mode` 事件，只要其值不在该封闭词汇中；Session 与其配套组件负责相关存储与核心执行封闭规则。
+可选的 `./invariant` 配套组件会拒绝伪造的持久 `sandbox/mode` 事件，只要其值不在该封闭词汇中；Session 与其配套组件负责相关存储与核心执行封闭规则。agent loop（智能体循环）会将组装后的完整运行时上下文快照记录为一条带来源的 `user/message`，因此无需内存中的「上次告知」镜像，也能重建确切的策略输入。
 
 ## 逐会话存储
 
-运行时切换是在对应会话日志中追加的一条 `sandbox/mode` 事件。`effective = explicit grant ?? fold(events) ?? deployment default`，因此覆盖会通过回放跨重启保留，两个会话也绝不会看到彼此状态。工作区标识无需另一条事件：创建时记录的不可变 `SessionHeader.cwd` 是该会话每次调用使用的根。该事件只进入日志（沿用 `approval/*` 先例）：模型通过强制执行工具的拒绝标记获知模式，绝不会从事件获知。
+运行时切换是在对应会话日志中追加的一条 `sandbox/mode` 事件。`effective = explicit grant ?? fold(events) ?? deployment default`，因此覆盖会通过回放跨重启保留，两个会话也绝不会看到彼此状态。工作区标识无需另一条事件：创建时记录的不可变 `SessionHeader.cwd` 是该会话每次调用使用的根。该事件仍只进入日志；在下一次请求前，归属方会将当前事实贡献给完整运行时上下文快照。
 
 ## 模型体验
 
-通过 `dsh-tool-bash` 和 `dsh-tool-fs` 间接影响；它们会在 `[sandbox: …]` 拒绝标记和升权提示词中渲染该服务持有的有效模式，`sandbox/mode` 事件本身绝不会到达模型。
+### 当前文件沙箱策略
+
+#### 模型看到的内容
+
+每个 agent 会话的当前运行时上下文快照中都有一项 `sandbox:policy` 贡献。它不枚举已装载的能力。工具插件继续负责操作与升级引导，批准策略单独贡献给同一份快照，计划引导仍由 `dsh-plan-mode` 的系统段落管理。
+
+##### 只读
+
+```markdown
+Current DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns.
+```
+
+##### 工作区写入
+
+```markdown
+Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: "". Some platform temporary areas may also be writable.
+```
+
+##### 完全访问
+
+```markdown
+Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.
+```
+
+#### Token 影响
+
+首次请求和有效策略每次变化时增加一条简洁的持久上下文消息；未变化的请求不增加内容。`workspace-write` 只携带规范化的会话工作区路径；平台特定的临时路径会以摘要表述，不会加入依赖主机的字节。
 
 #### KV Cache 影响
 
-不会直接使 KV Cache 失效；请求前缀变更由上述消费方负责，且提示词有意不包含模式。
+模式切换时，稳定的系统提示词仍逐字节相同。变化后的完整上下文快照会追加到保留的历史之后，从而保留此前已缓存的前缀；后续未变化的请求会复用该保留快照。
 
 ## 已知限制与暂缓事项
 
 - **每个会话只有一个主要工作区根目录**：策略解析 `SessionHeader.cwd`；额外可写根目录不属于 `SandboxExecutionPolicy`。
 - **仅限文件操作模式**：`SandboxMode` 管控文件操作；网络和进程策略不在其词汇中，因此这里没有限制它们的旋钮。
+- **有意概述临时区域**：强制执行后端会授予不同的平台临时区域，这些区域在策略解析后才会选定，因此无法在当前上下文中如实枚举。
diff --git a/packages/sandbox/sandbox-policy/package.json b/packages/sandbox/sandbox-policy/package.json
index d5f9270ed1..6f516c222d 100644
--- a/packages/sandbox/sandbox-policy/package.json
+++ b/packages/sandbox/sandbox-policy/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@deepseek-ai/dsh-sandbox-policy",
-  "description": "Per-call sandbox policy resolver (ctx.sandboxPolicy): deployment fallbacks plus each session's mode and workspace root, shared by every enforcing capability family",
+  "description": "Per-call sandbox policy resolver and current model context: deployment fallbacks plus each session's mode and workspace root, shared by every enforcing capability family",
   "version": "0.0.1",
   "private": true,
   "type": "module",
@@ -27,18 +27,22 @@
   ],
   "license": "BSD-3-Clause",
   "peerDependencies": {
+    "@deepseek-ai/dsh-agent": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
     "@deepseek-ai/dsh-sandbox": "^0.0.1",
     "@deepseek-ai/dsh-session": "^0.0.1",
+    "@deepseek-ai/dsh-system-prompt": "^0.0.1",
     "cordis": "^4.0.0-rc.7"
   },
   "dependencies": {
     "schemastery": "^3.18.0"
   },
   "devDependencies": {
+    "@deepseek-ai/dsh-agent": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@deepseek-ai/dsh-sandbox": "workspace:^",
     "@deepseek-ai/dsh-session": "workspace:^",
+    "@deepseek-ai/dsh-system-prompt": "workspace:^",
     "cordis": "^4.0.0-rc.7"
   }
 }
diff --git a/packages/sandbox/sandbox-policy/src/index.ts b/packages/sandbox/sandbox-policy/src/index.ts
index 1f5ba0bb00..4c87cbc8b3 100644
--- a/packages/sandbox/sandbox-policy/src/index.ts
+++ b/packages/sandbox/sandbox-policy/src/index.ts
@@ -3,13 +3,17 @@
  * deployment's sandbox fallbacks plus per-session resolution: the file-effect
  * {@link SandboxMode}, the `workspace-write` root, and the override kit (the
  * `sandbox/mode` event, its fold, and its write path, from `./session-mode.ts`).
+ * Before each agent request, the owner also contributes the resolved policy to
+ * the cache-safe runtime-context snapshot. The agent loop logs that snapshot as
+ * model history, so replay reconstructs the same mode and root the enforcing
+ * consumers resolve without rewriting the stable system prompt.
  *
- * Both enforcing capability families read the SAME policy here: the sandboxed
- * bash executor (`@deepseek-ai/dsh-bash-sandbox`) and the sandboxed filesystem
- * provider (`@deepseek-ai/dsh-fs-sandbox`) consume the SAME resolved per-call
- * policy, so bash and fs can never confine to different roots — the split
- * world the sandbox RFC warns about. The service reads session state once at
- * the tool boundary; executors and providers remain session-free.
+ * Enforcing filesystem, one-shot bash, and terminal backends read the SAME
+ * resolved policy here. The context describes that policy without inventorying
+ * capabilities, while each backend retains its own enforcement dialect and each
+ * tool owns its operation-specific denial and escalation guidance. The service
+ * reads session state once at each operation boundary; executors and providers
+ * remain session-free.
  *
  * @module @deepseek-ai/dsh-sandbox-policy
  */
@@ -17,8 +21,10 @@
 import { resolve as resolvePath } from 'node:path'
 import { Context, Service } from 'cordis'
 import z from 'schemastery'
+import type {} from '@deepseek-ai/dsh-agent'
 import { canonicalPath, type SandboxExecutionPolicy, type SandboxMode } from '@deepseek-ai/dsh-sandbox'
 import type { Session } from '@deepseek-ai/dsh-session'
+import type {} from '@deepseek-ai/dsh-system-prompt'
 import { effectiveSandboxMode } from './session-mode.ts'
 
 export { SANDBOX_MODES, effectiveSandboxMode, setSandboxMode } from './session-mode.ts'
@@ -28,6 +34,23 @@ function resolveWorkspaceRoot(path: string): string {
   return resolvePath(canonicalPath(path))
 }
 
+/** Render the policy without claiming which capabilities are mounted. */
+function renderPolicyContext(policy: SandboxExecutionPolicy): string {
+  switch (policy.mode) {
+    case 'read-only':
+      return 'Current DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns.'
+    case 'workspace-write':
+      return `Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: ${JSON.stringify(policy.workspaceRoot)}. Some platform temporary areas may also be writable.`
+    case 'danger-full-access':
+      return 'Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.'
+    /* v8 ignore next 4 -- SandboxMode is a typed same-process closed union; this branch is only the static exhaustiveness guard. */
+    default: {
+      const mode: never = policy.mode
+      throw new Error(`unreachable sandbox mode: ${String(mode)}`)
+    }
+  }
+}
+
 declare module 'cordis' {
   interface Context {
     sandboxPolicy: SandboxPolicyService
@@ -61,9 +84,9 @@ export interface SandboxPolicyRequest {
 
 /**
  * The sandbox-policy service (`ctx.sandboxPolicy`). Owns the deployment
- * default mode and fallback workspace root. Tool layers call {@link resolve}
- * for each execution so a session's mode log and immutable cwd travel together
- * to every enforcing capability.
+ * default mode, fallback workspace root, and current request-time policy
+ * section. Tool layers call {@link resolve} for each execution so a session's
+ * mode log and immutable cwd travel together to every enforcing capability.
  */
 export class SandboxPolicyService extends Service {
   // Inline schema call: the config catalog walks `static Config` statically.
@@ -78,7 +101,6 @@ export class SandboxPolicyService extends Service {
   readonly defaultMode: SandboxMode
   /** The absolute `workspace-write` fallback root for calls without a session cwd. */
   readonly workspaceRoot: string
-
   constructor(ctx: Context, config: Config) {
     super(ctx, 'sandboxPolicy')
     // schemastery (static Config) already filled `mode`; the cast records that
@@ -86,6 +108,19 @@ export class SandboxPolicyService extends Service {
     // the process cwd is real branching, resolved absolute either way.
     this.defaultMode = config.mode as SandboxMode
     this.workspaceRoot = resolveWorkspaceRoot(config.workspaceRoot ?? process.cwd())
+
+    ctx.inject(['systemPrompt'], (scope: Context) => {
+      scope.systemPrompt.context({
+        name: 'sandbox:policy',
+        order: 110,
+        text: (context) => {
+          const session = context.agent?.session
+          return session === undefined
+            ? ''
+            : renderPolicyContext(this.resolve({ session }))
+        },
+      })
+    })
   }
 
   /**
diff --git a/packages/sandbox/sandbox-policy/src/session-mode.ts b/packages/sandbox/sandbox-policy/src/session-mode.ts
index b4cd085859..fc7c53938c 100644
--- a/packages/sandbox/sandbox-policy/src/session-mode.ts
+++ b/packages/sandbox/sandbox-policy/src/session-mode.ts
@@ -5,11 +5,11 @@
  * `effective = fold(events) ?? the deployment default`, so an override
  * survives restart by replay, two sessions can never see each other's state,
  * and there is no external config store. The event is log-only (the
- * `approval/*` precedent): the model learns the mode from the boundary
- * markers in the enforcing tools, never from the event itself. EXECUTION
- * honors the fold through `ctx.sandboxPolicy.resolve()` — it stamps the mode
- * together with the calling session's workspace root onto each capability
- * call, weakest-precedence beneath an escalation grant.
+ * `approval/*` precedent): the policy owner projects the fold into each model
+ * request, while enforcing tools report operation-specific boundary markers.
+ * EXECUTION honors the same fold through `ctx.sandboxPolicy.resolve()` — it
+ * stamps the mode together with the calling session's workspace root onto each
+ * capability call, weakest-precedence beneath an escalation grant.
  *
  * The override is policy state shared by every enforcing family (bash and
  * filesystem alike), so it lives here in the policy package rather than in any
diff --git a/packages/sandbox/sandbox-policy/tests/policy.spec.ts b/packages/sandbox/sandbox-policy/tests/policy.spec.ts
index 63ca0cd3d5..463d5b3963 100644
--- a/packages/sandbox/sandbox-policy/tests/policy.spec.ts
+++ b/packages/sandbox/sandbox-policy/tests/policy.spec.ts
@@ -1,7 +1,7 @@
 /**
  * Tests for the sandbox-policy home: the deployment default (mode +
  * workspaceRoot) the service exposes, and the per-session `sandbox/mode`
- * override kit (fold + write path) both enforcing families read.
+ * override kit (fold + write path) every enforcing capability reads.
  */
 
 import { mkdirSync, mkdtempSync, realpathSync, rmSync, symlinkSync } from 'node:fs'
@@ -9,8 +9,10 @@ import { tmpdir } from 'node:os'
 import { join, resolve, sep } from 'node:path'
 import { describe, expect, it } from 'vitest'
 import { Context } from 'cordis'
+import type { Agent } from '@deepseek-ai/dsh-agent'
 import { Session, SessionId } from '@deepseek-ai/dsh-session'
 import SandboxPolicyService, { SANDBOX_MODES, effectiveSandboxMode, setSandboxMode } from '@deepseek-ai/dsh-sandbox-policy'
+import SystemPrompt, { renderContextSnapshot, renderPrompt } from '@deepseek-ai/dsh-system-prompt'
 
 async function mounted(config: { mode?: 'read-only' | 'workspace-write' | 'danger-full-access'; workspaceRoot?: string } = {}) {
   const ctx = new Context()
@@ -28,6 +30,15 @@ function session(id: string, cwd?: string): Session {
   })
 }
 
+function agentFor(activeSession: Session): Agent {
+  return { session: activeSession } as unknown as Agent
+}
+
+async function policyContext(ctx: Context, activeSession: Session): Promise {
+  return (await ctx.systemPrompt.assemble({ agent: agentFor(activeSession) }))
+    .contexts.find(context => context.name === 'sandbox:policy')?.text
+}
+
 describe('SandboxPolicyService', () => {
   it('defaults to read-only under the process cwd', async () => {
     const ctx = await mounted()
@@ -114,12 +125,81 @@ describe('SandboxPolicyService', () => {
     await expect(ctx.plugin(SandboxPolicyService, { mode: 'yolo' as never })).rejects.toThrow()
   })
 
-  it('unregisters cleanly from a child fiber (HMR safety)', async () => {
+  it('disposes the service and context contribution from a child fiber (HMR safety)', async () => {
     const ctx = new Context()
+    await ctx.plugin(SystemPrompt)
     const fiber = await ctx.plugin(SandboxPolicyService, {})
     expect(ctx.sandboxPolicy).toBeDefined()
+    expect(await policyContext(ctx, session('sess-hmr'))).toContain('read-only')
     await fiber.dispose()
     expect(ctx.get('sandboxPolicy')).toBeUndefined()
+    expect((await ctx.systemPrompt.assemble()).contexts.find(context => context.name === 'sandbox:policy')).toBeUndefined()
+  })
+})
+
+describe('sandbox:policy request context', () => {
+  async function promptMounted(config: { mode?: 'read-only' | 'workspace-write' | 'danger-full-access'; workspaceRoot?: string } = {}): Promise {
+    const ctx = new Context()
+    await ctx.plugin(SystemPrompt)
+    await ctx.plugin(SandboxPolicyService, config)
+    return ctx
+  }
+
+  it.each(['read-only', 'workspace-write', 'danger-full-access'] as const)('renders the exact %s policy without a capability inventory', async (mode) => {
+    const ctx = await promptMounted({ mode, workspaceRoot: '/fallback' })
+    const workspaceRoot = resolve('/projects/current')
+    const expected = {
+      'read-only': 'Current DSH file policy: read-only. Any available operation enforced by the DSH file sandbox cannot modify files in the standing mode. Do not refuse a required modification from this policy alone: try an available tool normally and follow any denial and escalation guidance it returns.',
+      'workspace-write': `Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: ${JSON.stringify(workspaceRoot)}. Some platform temporary areas may also be writable.`,
+      'danger-full-access': 'Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.',
+    } as const
+
+    expect(await policyContext(ctx, session(`sess-${mode}`, '/projects/../projects/current'))).toBe(expected[mode])
+  })
+
+  it('keeps the complete rendered prompt byte-stable across TMPDIR changes', async () => {
+    const ctx = await promptMounted({ mode: 'workspace-write' })
+    const active = session('sess-tmpdir-stability', '/projects/current')
+    const previous = process.env.TMPDIR
+    try {
+      process.env.TMPDIR = '/tmp/first-host-temp'
+      const firstAssembly = await ctx.systemPrompt.assemble({ agent: agentFor(active) })
+      const firstPrompt = renderPrompt(firstAssembly)
+      const firstContext = renderContextSnapshot(firstAssembly)
+      process.env.TMPDIR = '/tmp/second-host-temp'
+      const secondAssembly = await ctx.systemPrompt.assemble({ agent: agentFor(active) })
+      expect(renderPrompt(secondAssembly)).toBe(firstPrompt)
+      expect(renderContextSnapshot(secondAssembly)).toBe(firstContext)
+      expect(firstContext).not.toContain('host-temp')
+    } finally {
+      if (previous === undefined) delete process.env.TMPDIR
+      else process.env.TMPDIR = previous
+    }
+  })
+
+  it('reflects the latest durable switch on the next assembly and stays byte-stable otherwise', async () => {
+    const ctx = await promptMounted()
+    const active = session('sess-switch', '/projects/current')
+    const first = await policyContext(ctx, active)
+    expect(await policyContext(ctx, active)).toBe(first)
+
+    setSandboxMode(active, 'danger-full-access')
+    const danger = await policyContext(ctx, active)
+    expect(danger).toBe('Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.')
+    expect(await policyContext(ctx, active)).toBe(danger)
+
+    setSandboxMode(active, 'workspace-write')
+    expect(await policyContext(ctx, active)).toBe(`Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: ${JSON.stringify(resolve('/projects/current'))}. Some platform temporary areas may also be writable.`)
+  })
+
+  it('reconstructs resumed policy from the session log and omits diagnostics without an agent', async () => {
+    const active = session('sess-resume', '/projects/current')
+    setSandboxMode(active, 'workspace-write')
+    const resumed = new Session(active.id, active.events, active.header)
+    const ctx = await promptMounted({ mode: 'read-only' })
+
+    expect(await policyContext(ctx, resumed)).toContain('workspace-write')
+    expect((await ctx.systemPrompt.assemble()).contexts.find(context => context.name === 'sandbox:policy')?.text).toBe('')
   })
 })
 
diff --git a/packages/sandbox/sandbox-policy/tsconfig.json b/packages/sandbox/sandbox-policy/tsconfig.json
index cb6fc623d0..c7081ad9be 100644
--- a/packages/sandbox/sandbox-policy/tsconfig.json
+++ b/packages/sandbox/sandbox-policy/tsconfig.json
@@ -17,12 +17,18 @@
     {
       "path": "../../../vendor/schemastery"
     },
+    {
+      "path": "../../core/agent"
+    },
     {
       "path": "../sandbox"
     },
     {
       "path": "../../core/session"
     },
+    {
+      "path": "../../core/system-prompt"
+    },
     {
       "path": "../../support/invariants"
     }
diff --git a/packages/session-persistence/session-checkpoint-policy/tests/crash-recovery.e2e.ts b/packages/session-persistence/session-checkpoint-policy/tests/crash-recovery.e2e.ts
index 8a332e030d..b911633316 100644
--- a/packages/session-persistence/session-checkpoint-policy/tests/crash-recovery.e2e.ts
+++ b/packages/session-persistence/session-checkpoint-policy/tests/crash-recovery.e2e.ts
@@ -85,7 +85,7 @@ describe.skipIf(process.platform === 'win32')('semantic checkpoint hard-crash re
     expect(crashed.markerText).toBe('request-dispatched')
     const events = await load(crashed.root)
     expect(events.map(event => event.type)).toEqual([
-      'turn/start', 'user/message', 'step/start', 'request/header', 'step/end', 'turn/end',
+      'turn/start', 'user/message', 'step/start', 'request/header', 'request/context', 'step/end', 'turn/end',
     ])
     expect(events.at(-1)).toMatchObject({
       type: 'turn/end', data: { reason: { kind: 'interrupted' } },
diff --git a/packages/subagent/subagent-inprocess/tests/inheritance.spec.ts b/packages/subagent/subagent-inprocess/tests/inheritance.spec.ts
index c77a174ee7..7b60e5c8e2 100644
--- a/packages/subagent/subagent-inprocess/tests/inheritance.spec.ts
+++ b/packages/subagent/subagent-inprocess/tests/inheritance.spec.ts
@@ -100,7 +100,20 @@ describe('in-process policy inheritance', () => {
       const request = child.session.events.find(
         (event): event is SessionEvent<'request/header'> => event.type === 'request/header',
       )
-      expect(request?.data.header.system).toContain('Approval prompts are disabled')
+      const runtimeContext = child.session.events.find(
+        (event): event is SessionEvent<'user/message'> => event.type === 'user/message'
+          && event.data.source.kind === 'plugin'
+          && event.data.source.plugin === '@deepseek-ai/dsh-system-prompt',
+      )
+      if (request === undefined || runtimeContext === undefined) throw new Error('child request lacks its runtime policy context')
+      expect(runtimeContext.seq).toBeLessThan(request.seq)
+      const contextText = runtimeContext.data.content
+        .filter((block): block is Extract => block.type === 'text')
+        .map(block => block.text)
+        .join('\n')
+      expect(contextText).toContain('Current DSH file policy: read-only')
+      expect(contextText).toContain('Approval prompts are disabled')
+      expect(request.data.header.system).not.toContain('Approval prompts are disabled')
       expect(parent.session.events).toHaveLength(parentLogLength)
     } finally {
       await run.dispose()
diff --git a/packages/support/acp-snapshot/README.i18n.yaml b/packages/support/acp-snapshot/README.i18n.yaml
index 363e0f268c..376cea9dcd 100644
--- a/packages/support/acp-snapshot/README.i18n.yaml
+++ b/packages/support/acp-snapshot/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/support/acp-snapshot/README.md
-README.md: 948c33a91977f078d16842c285011bf8f83623bd
-README.zh.md: fb86bd4e236be1c79f66dc46fbaac4d7dfbf9977
+README.md: e7988733827ef1d4de67d6d49764a4836e33d17c
+README.zh.md: e2466feb5e2025cb99f252b4206bfacb711bccda
diff --git a/packages/support/acp-snapshot/README.md b/packages/support/acp-snapshot/README.md
index 948c33a919..e798873382 100644
--- a/packages/support/acp-snapshot/README.md
+++ b/packages/support/acp-snapshot/README.md
@@ -8,8 +8,8 @@ Four layers, importable separately:
 
 - **`launchAcpTestAgent` (launcher)** — boots a source agent under tsx or a built `lib` agent under plain Node from a supplied cwd, connects the SDK client over a raw-byte stdout tee, collects session updates and stderr, surfaces asynchronous spawn failures through startup, fails closed on unhandled permission requests, and owns graceful or signalled shutdown. Shutdown waits for process exit, inherited stdio closure, and ACP parser exhaustion before resolving or propagating a child error, so captures are complete and callers can remove owned paths after either outcome. When Windows accepts forced termination but publishes its exit marker asynchronously, shutdown gives that marker a bounded grace before treating fallback refusal as a second failure. Snapshot and ordinary e2e suites share this process boundary; a test supplies only agent paths, cwd, environment overrides, and any permission policy.
 - **`runScenario` (harness)** — drives ACP JSON-RPC stdio from a deterministic `input.json` script through the launcher, tees raw stdout for the expected-output and purity checks, and harvests every persisted raw JSONL session log (parent and subagent children, primary-first) after graceful stdin EOF. `AgentUnderTest` supplies absolute `binScript`, optional `libBinScript`, `configPath`, and `tsconfigPath` paths because the subprocess cwd is outside the repo; `workspaceParent` may move the generated child cwd from the platform temp directory when that grant is itself under test. Startup failures preserve captured agent stderr in the rejected diagnostic.
-- **Normalizers** — pure functions turning captured surfaces into stable text or portable fixtures: `normalizeStdout` (JSON-RPC ids → first-seen sequence; UUIDs and every native/JavaScript filesystem spelling of the generated cwd → tokens, longest-first; cwd-rooted separators selected as canonical `/` or host-native; doubles as the stdout-purity check), `normalizeSessionLog` (times zeroed, `seq` kept, the same cwd-path policy), `tokenizeSessionFixtureCwd` (the generated workspace and its filesystem aliases → `{{cwd}}`, authored temp paths unchanged), `scrubSystemPrompts` (prompt text → `{{system}}`), `scrubToolSchemas` (schema bulk → `{{tools}}`), and `scrubRequestHeaders` (all header bulk → `{{system}}`/`{{tools}}`/`{{messagePrefix}}` outside each pin, structure kept — [pinned-header Agent Note](../../../.agents/notes/archived/testing/2026-07-06-pin-request-header-content-in-one-scenario.md)).
-- **`defineAcpSnapshotSuite` (factory)** — registers the whole describe/it tree for a scenario table: per-scenario expected-output and re-persisted-log comparisons, record/refresh fixture write-back, rejection of structured `UNKNOWN_TOOL` results, a tokenized pin per header class composed with independently shared `system-prompt.expected.md` and `tool-schemas.expected.json` sidecars, and a live uniformity guard. Its fixture guards reject orphan scenario dirs, missing files, multiple pins for one class, duplicate sidecar content, unscrubbed JSONL headers, and malformed pinning headers. Refresh evaluates fresh leaves with the harvested run's ids, cwd, and every cwd alias, then reuses normalized-equivalent leaves only when the complete logical-record layout aligns and volatile string replacements form a bijection; ambiguous logs keep fresh strings, and fresh semantic values remain authoritative. It also expands packed timing envelopes before aligning event times, so switching between packed and unpacked layouts cannot shift later records. A newly inserted `session/title` receives its preceding event's time so feature-driven insertions do not churn the remainder of a fixture. Each scenario directory's `session.jsonl` plus contiguous `session..jsonl` siblings are the ordered primary/child inventory; the scenario table does not duplicate their count. Must be called at vitest collection time.
+- **Normalizers** — pure functions turning captured surfaces into stable text or portable fixtures: `normalizeStdout` (JSON-RPC ids → first-seen sequence; UUIDs and every native/JavaScript filesystem spelling of the generated cwd → tokens, longest-first; cwd-rooted separators selected as canonical `/` or host-native; doubles as the stdout-purity check), `normalizeSessionLog` (times zeroed, `seq` kept, the same cwd-path policy), `tokenizeSessionFixtureCwd` (the generated workspace and its filesystem aliases → one canonical `{{cwd}}`, including an already-tokenized macOS `/private` alias; authored temp paths unchanged), `scrubSystemPrompts` (prompt text → `{{system}}`), `scrubToolSchemas` (schema bulk → `{{tools}}`), and `scrubRequestHeaders` (all header bulk → `{{system}}`/`{{tools}}`/`{{messagePrefix}}` outside each pin, structure kept — [pinned-header Agent Note](../../../.agents/notes/archived/testing/2026-07-06-pin-request-header-content-in-one-scenario.md)).
+- **`defineAcpSnapshotSuite` (factory)** — registers the whole describe/it tree for a scenario table: per-scenario expected-output and re-persisted-log comparisons, record/refresh fixture write-back, rejection of structured `UNKNOWN_TOOL` results, a tokenized pin per header class composed with independently shared `system-prompt.expected.md` and `tool-schemas.expected.json` sidecars, and a live uniformity guard. Its fixture guards reject orphan scenario dirs, missing files, multiple pins for one class, duplicate sidecar content, noncanonical macOS-prefixed cwd tokens, unscrubbed JSONL headers, and malformed pinning headers. Refresh evaluates fresh leaves with the harvested run's ids, cwd, and every cwd alias, then reuses normalized-equivalent leaves only when the complete logical-record layout aligns and volatile string replacements form a bijection; ambiguous logs keep fresh strings, and fresh semantic values remain authoritative. It also expands packed timing envelopes before aligning event times, so switching between packed and unpacked layouts cannot shift later records. A newly inserted `session/title` receives its preceding event's time so feature-driven insertions do not churn the remainder of a fixture. Each scenario directory's `session.jsonl` plus contiguous `session..jsonl` siblings are the ordered primary/child inventory; the scenario table does not duplicate their count. Must be called at vitest collection time.
 
 Committed session fixtures use canonical packed rows. An in-flight branch that merges this contract runs the [temporary repository migrator](../../../scripts/migrate-packed-session-fixtures.ts) with `pnpm run migrate:packed-session-fixtures`; its [removal proposal](../../../.agents/notes/proposed/process/2026-07-26-remove-packed-session-fixture-migrator.md) owns deletion after affected branches converge.
 
diff --git a/packages/support/acp-snapshot/README.zh.md b/packages/support/acp-snapshot/README.zh.md
index fb86bd4e23..e2466feb5e 100644
--- a/packages/support/acp-snapshot/README.zh.md
+++ b/packages/support/acp-snapshot/README.zh.md
@@ -8,8 +8,8 @@ ACP 快照套件工具包：无密钥快照层（`pnpm run test:snapshot`，见[
 
 - **`launchAcpTestAgent`（启动器）**：从指定 cwd 在 tsx 下启动源 agent，或在普通 Node 下启动已构建 `lib` agent；通过原始字节 stdout tee 连接 SDK 客户端，收集会话更新和 stderr，在启动过程中公开异步 spawn 失败，对未处理权限请求快速失败，并负责优雅或带信号关闭。关闭会等待进程退出、继承 stdio 关闭和 ACP parser 耗尽，然后才解析或传播子级错误，使捕获内容完整，且调用方可在任一结果后移除自有路径。当 Windows 接受强制终止但异步发布退出标记时，关闭会给该标记有界宽限，然后才将回退拒绝视为第二次失败。快照和普通 e2e 套件共享该进程边界；测试只需提供 agent 路径、cwd、环境覆盖和任何权限策略。
 - **`runScenario`（harness）**：通过启动器从确定性 `input.json` 脚本驱动 ACP JSON-RPC stdio，将原始 stdout tee 给预期输出和纯度检查，并在优雅 stdin EOF 后收集每个持久化原始 JSONL 会话日志（父级和 subagent 子级，主级优先）。`AgentUnderTest` 提供绝对 `binScript`、可选 `libBinScript`、`configPath` 和 `tsconfigPath` 路径，因为子进程 cwd 位于仓库外。当生成子级 cwd 自身位于待测授权中时，`workspaceParent` 可以将它从平台临时目录移出。启动失败会在拒绝诊断中保留已捕获 agent stderr。
-- **规范化器**：将已捕获接口转换为稳定文本或可移植 fixture 的纯函数：`normalizeStdout`（JSON-RPC id → 首次出现序列；UUID 以及生成 cwd 的每个原生/JavaScript 文件系统写法 → token，按最长优先；根据 cwd 的分隔符选择规范 `/` 或宿主原生形式；同时作为 stdout 纯度检查）、`normalizeSessionLog`（时间归零、保留 `seq`、使用同一 cwd 路径策略）、`tokenizeSessionFixtureCwd`（生成的 workspace 及其文件系统别名 → `{{cwd}}`，手工编写的临时路径保持不变）、`scrubSystemPrompts`（提示词文本 → `{{system}}`）、`scrubToolSchemas`（schema bulk → `{{tools}}`）和 `scrubRequestHeaders`（每个 pin 之外的所有 header bulk → `{{system}}`/`{{tools}}`/`{{messagePrefix}}`，保留结构；见[header 固定 Agent Note](../../../.agents/notes/archived/testing/2026-07-06-pin-request-header-content-in-one-scenario.md)）。
-- **`defineAcpSnapshotSuite`（工厂）**：为场景表注册完整 describe/it 树：每场景预期输出与重新持久化日志比较、录制/刷新 fixture 回写、拒绝结构化 `UNKNOWN_TOOL` 结果、每个 header 类别一个 token 化 pin（由可独立共享的 `system-prompt.expected.md` 和 `tool-schemas.expected.json` sidecar 组合而成），以及实时一致性保护。其 fixture 保护会拒绝遗留场景目录、缺失文件、一个类别包含多个 pin、重复的 sidecar 内容、未擦除的 JSONL header，以及格式错误的 pin header。刷新会使用收集所得本次运行的 id、cwd 及全部 cwd 别名评估本次生成的叶值；只有完整逻辑记录布局对齐且易变字符串替换形成双射时，才会复用规范化后等价的叶值；有歧义的日志保留本次生成的字符串，而本次生成的语义值仍为权威数据。它还会在对齐事件时间前展开打包时序 envelope，因此切换打包/非打包布局无法移动后续记录。新插入的 `session/title` 使用前一个事件的时间，因此功能驱动的插入不会扰动 fixture 余下部分。每个场景目录的 `session.jsonl` 和连续 `session..jsonl` 同级文件是有序主级/子级清单；场景表不重复其数量。必须在 vitest 收集时调用。
+- **规范化器**：将已捕获接口转换为稳定文本或可移植 fixture 的纯函数：`normalizeStdout`（JSON-RPC id → 首次出现序列；UUID 以及生成 cwd 的每个原生/JavaScript 文件系统写法 → token，按最长优先；根据 cwd 的分隔符选择规范 `/` 或宿主原生形式；同时作为 stdout 纯度检查）、`normalizeSessionLog`（时间归零、保留 `seq`、使用同一 cwd 路径策略）、`tokenizeSessionFixtureCwd`（生成的 workspace 及其文件系统别名，包括已 token 化的 macOS `/private` 别名 → 单一规范 `{{cwd}}`；手工编写的临时路径保持不变）、`scrubSystemPrompts`（提示词文本 → `{{system}}`）、`scrubToolSchemas`（schema bulk → `{{tools}}`）和 `scrubRequestHeaders`（每个 pin 之外的所有 header bulk → `{{system}}`/`{{tools}}`/`{{messagePrefix}}`，保留结构；见[header 固定 Agent Note](../../../.agents/notes/archived/testing/2026-07-06-pin-request-header-content-in-one-scenario.md)）。
+- **`defineAcpSnapshotSuite`（工厂）**：为场景表注册完整 describe/it 树：每场景预期输出与重新持久化日志比较、录制/刷新 fixture 回写、拒绝结构化 `UNKNOWN_TOOL` 结果、每个 header 类别一个 token 化 pin（由可独立共享的 `system-prompt.expected.md` 和 `tool-schemas.expected.json` sidecar 组合而成），以及实时一致性保护。其 fixture 保护会拒绝遗留场景目录、缺失文件、一个类别包含多个 pin、重复的 sidecar 内容、带非规范 macOS 前缀的 cwd token、未擦除的 JSONL header，以及格式错误的 pin header。刷新会使用收集所得本次运行的 id、cwd 及全部 cwd 别名评估本次生成的叶值；只有完整逻辑记录布局对齐且易变字符串替换形成双射时，才会复用规范化后等价的叶值；有歧义的日志保留本次生成的字符串，而本次生成的语义值仍为权威数据。它还会在对齐事件时间前展开打包时序 envelope，因此切换打包/非打包布局无法移动后续记录。新插入的 `session/title` 使用前一个事件的时间，因此功能驱动的插入不会扰动 fixture 余下部分。每个场景目录的 `session.jsonl` 和连续 `session..jsonl` 同级文件是有序主级/子级清单；场景表不重复其数量。必须在 vitest 收集时调用。
 
 签入仓库的会话 fixture 使用规范打包行。合并此契约的在途分支通过 `pnpm run migrate:packed-session-fixtures` 运行[临时仓库迁移器](../../../scripts/migrate-packed-session-fixtures.ts)；待受影响分支收敛后，由其[移除提案](../../../.agents/notes/proposed/process/2026-07-26-remove-packed-session-fixture-migrator.md)负责删除该迁移器。
 
diff --git a/packages/support/acp-snapshot/src/normalize.ts b/packages/support/acp-snapshot/src/normalize.ts
index e010afebcb..a3d5e66aa1 100644
--- a/packages/support/acp-snapshot/src/normalize.ts
+++ b/packages/support/acp-snapshot/src/normalize.ts
@@ -197,7 +197,7 @@ function tokenizeFixtureString(value: string, ctx: NormalizeContext, basename: s
     + String.raw`(?=$|[\\/\s<>'"()\[\]{},;:!?=])`,
     'g',
   )
-  return exact.replace(absoluteCwd, CWD)
+  return exact.replace(absoluteCwd, CWD).split(`/private${CWD}`).join(CWD)
 }
 
 /** Recursively replace generated-cwd spellings while preserving every other JSON value. */
diff --git a/packages/support/acp-snapshot/src/suite.ts b/packages/support/acp-snapshot/src/suite.ts
index 1a8a49dac5..a641bd19cd 100644
--- a/packages/support/acp-snapshot/src/suite.ts
+++ b/packages/support/acp-snapshot/src/suite.ts
@@ -1269,9 +1269,10 @@ export function defineAcpSnapshotSuite(options: SnapshotSuiteOptions): void {
       assertUniqueSnapshotContents('tool-schema', schemas)
     })
 
-    it('every committed JSONL has valid tool results and canonical header storage', async () => {
+    it('every committed JSONL has valid tool results and canonical fixture storage', async () => {
       // Prompts and schemas always leave JSONL. Header pins retain prefixes;
-      // every other fixture tokenizes those too. Fixed-point checks make both
+      // every other fixture tokenizes those too. Portable cwd tokens never
+      // retain a platform realpath prefix. Fixed-point checks make these
       // storage rules fail loud.
       for (const scenario of scenarios) {
         const dir = join(snapshotsDir, scenario.name)
@@ -1280,6 +1281,8 @@ export function defineAcpSnapshotSuite(options: SnapshotSuiteOptions): void {
           const fixture = await readFile(join(dir, file), 'utf8')
           expect(unknownToolCallIds(fixture), `${scenario.name}/${file} contains UNKNOWN_TOOL`)
             .toEqual([])
+          expect(fixture, `${scenario.name}/${file} carries a non-canonical macOS cwd token`)
+            .not.toContain('/private{{cwd}}')
           expect(scrubSystemPrompts(fixture), `${scenario.name}/${file} carries an unscrubbed system prompt`)
             .toEqual(fixture)
           expect(scrubToolSchemas(fixture), `${scenario.name}/${file} carries unscrubbed tool schemas`)
diff --git a/packages/support/acp-snapshot/tests/normalize.spec.ts b/packages/support/acp-snapshot/tests/normalize.spec.ts
index 8bc6a66d14..aea21eb747 100644
--- a/packages/support/acp-snapshot/tests/normalize.spec.ts
+++ b/packages/support/acp-snapshot/tests/normalize.spec.ts
@@ -470,6 +470,24 @@ describe('tokenizeSessionFixtureCwd', () => {
     expect(tokenizeSessionFixtureCwd(out)).toBe(out)
   })
 
+  it('collapses a residual macOS realpath prefix around an existing cwd token', () => {
+    const raw = [
+      JSON.stringify({ type: 'session', id: 's', createdAt: 1, cwd: '{{cwd}}' }),
+      JSON.stringify({
+        type: 'tool/result',
+        seq: 1,
+        time: 2,
+        data: { content: [{ type: 'text', text: 'wrote /private{{cwd}}/proof.txt' }] },
+      }),
+      '',
+    ].join('\n')
+
+    const out = tokenizeSessionFixtureCwd(raw)
+    expect(out).toContain('wrote {{cwd}}/proof.txt')
+    expect(out).not.toContain('/private{{cwd}}')
+    expect(tokenizeSessionFixtureCwd(out)).toBe(out)
+  })
+
   it('rejects a log without a session cwd', () => {
     expect(() => tokenizeSessionFixtureCwd('')).toThrow(
       'acp-snapshot: cannot tokenize a cwd without a basename',
diff --git a/packages/ui/app-boot/README.i18n.yaml b/packages/ui/app-boot/README.i18n.yaml
index 684f322477..619a3ab81d 100644
--- a/packages/ui/app-boot/README.i18n.yaml
+++ b/packages/ui/app-boot/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/ui/app-boot/README.md
-README.md: 54f754842d9a6673ed6791b94656139f0f1be6a3
-README.zh.md: dd56084812e8241f0db24601ce2baeba51252d42
+README.md: 51bc5082512632dd493956b96c605aff47dc872e
+README.zh.md: 644d3a3613a9516cb02881fac8ba7531bffa81eb
diff --git a/packages/ui/app-boot/README.md b/packages/ui/app-boot/README.md
index 54f754842d..51bc508251 100644
--- a/packages/ui/app-boot/README.md
+++ b/packages/ui/app-boot/README.md
@@ -14,6 +14,7 @@ Shared boot glue for the app bins ([`dsh`](../../../apps/cli/README.md), [`dsh-c
 | `loadPersonalPatches(binName, dir?)` | Parse the optional `config.yaml` in the Harness home (default [`resolveDshHome()`](../../util/paths/README.md): `$DSH_HOME`, else `~/.dsh`) — a top-level YAML array of include `PatchOptions` (id-targeted config overrides, `insert` lists, `!!js` allowed); absent file → `undefined`, an unreadable/unparsable/non-array file throws |
 | `loadOverlayPatches(binName, file)` | Parse a required patch-list file with the same shape as personal config; read or parse failures throw a labelled error |
 | `boot(binName, absoluteConfigPath, patches?, prepare?)` | Create the root context, install Loader, run optional host preparation before config-tree entries mount (`prepare` may use Loader and provide launcher-owned context slots such as [`MAIN_SESSION_ID_KEY`](../tui/README.md)), then mount and await the include tree, assert entries loaded and activated, and return the root context |
+| `renderConfigDump(binName, absoluteConfigPath, layers, warn?)` | Compose the base config and labeled overlay layers offline — the include's own parser and patch algorithm (`entryListSchema`/`applyEntryPatches`), so the result equals what `boot()` mounts — and render YAML with `!!js` expressions verbatim; each run of same-provenance rows is preceded by a `# ==` comment naming the contributing file and the layers that patched it, keeping the output one loadable document; a patch matching no row goes to `warn` with its layer label (default: one stderr line), read/parse/shape failures throw |
 | `addHarnessSourceSection(ctx, sourceRoot)` | Add a global `harness:source` prompt section (ordered just after the harness identity, before the persona) telling the agent the on-disk path to its own source checkout; a no-op returning `undefined` when the booted tree has no `systemPrompt` service. The section is registered against that service's fiber, so a dev HMR reload of the system prompt drops it until the next boot |
 | `HARNESS_SOURCE_SECTION` | The `'harness:source'` section name `addHarnessSourceSection` registers under |
 
diff --git a/packages/ui/app-boot/README.zh.md b/packages/ui/app-boot/README.zh.md
index dd56084812..644d3a3613 100644
--- a/packages/ui/app-boot/README.zh.md
+++ b/packages/ui/app-boot/README.zh.md
@@ -14,6 +14,7 @@
 | `loadPersonalPatches(binName, dir?)` | 解析 Harness home 中可选的 `config.yaml`（默认使用 [`resolveDshHome()`](../../util/paths/README.md)：先取 `$DSH_HOME`，否则取 `~/.dsh`）：其顶层是一个 YAML 数组，内容为 include 的 `PatchOptions`（按 id 定位的配置覆盖、`insert` 列表，允许 `!!js`）；文件不存在时返回 `undefined`，文件不可读、不可解析或内容不是数组时抛出异常 |
 | `loadOverlayPatches(binName, file)` | 解析一份必需的 patch 列表文件，其形状与个人配置相同；读取或解析失败时抛出带标签的错误 |
 | `boot(binName, absoluteConfigPath, patches?, prepare?)` | 创建根上下文并安装 Loader，在配置树条目挂载前执行可选的宿主准备操作（`prepare` 可以使用 Loader，也可以提供由启动器拥有的上下文插槽，例如 [`MAIN_SESSION_ID_KEY`](../tui/README.md)），再挂载并等待 include 树结算，断言所有条目均已加载并激活，最后返回根上下文 |
+| `renderConfigDump(binName, absoluteConfigPath, layers, warn?)` | 离线合成基础配置与带标签的覆盖层——使用 include 自己的解析器和补丁算法（`entryListSchema`/`applyEntryPatches`），因此结果与 `boot()` 挂载的内容一致——并渲染为 YAML，`!!js` 表达式原样保留；每段来源相同的连续行之前都有一条 `# ==` 注释，标明贡献该段的文件以及修补过它的层，输出仍是一份可加载的文档；未匹配到行的补丁连同其层标签交给 `warn`（默认：一行 stderr），读取／解析／形状失败则抛出 |
 | `addHarnessSourceSection(ctx, sourceRoot)` | 添加全局 `harness:source` 提示词段落（顺序紧随 harness 身份、位于 persona 之前），告知 agent（智能体）自身源代码 checkout 的磁盘路径；如果已启动树没有此项服务，则不执行操作并返回 `undefined`。这里的服务是 `systemPrompt`；该段落注册到它的 fiber，因此开发环境 HMR（热模块替换）重新加载系统提示词后，它会消失直至下次启动 |
 | `HARNESS_SOURCE_SECTION` | `'harness:source'` 段落名称，供 `addHarnessSourceSection` 注册使用 |
 
diff --git a/packages/ui/app-boot/src/index.ts b/packages/ui/app-boot/src/index.ts
index 015898f2cb..58b9d63bf8 100644
--- a/packages/ui/app-boot/src/index.ts
+++ b/packages/ui/app-boot/src/index.ts
@@ -12,7 +12,7 @@ import { basename, dirname, join, resolve } from 'node:path'
 import * as yaml from 'js-yaml'
 import { Context, type FiberState } from 'cordis'
 import Loader from '@cordisjs/plugin-loader'
-import Include, { type PatchOptions } from '@cordisjs/plugin-include'
+import Include, { applyEntryPatches, entryListSchema, type PatchOptions } from '@cordisjs/plugin-include'
 import { resolveDshHome } from '@deepseek-ai/dsh-paths'
 // Side-effect type import: resolves `ctx.get('systemPrompt')` to the service.
 import type {} from '@deepseek-ai/dsh-system-prompt'
@@ -60,16 +60,12 @@ export function loadEnv(
 /** File inside the Harness home holding the personal loader overlay patches. */
 export const PERSONAL_CONFIG_FILENAME = 'config.yaml'
 
-// The include's YAML dialect: `!!js` scalars become expression nodes the
-// Loader interpolates against each entry's context at mount time. Personal
-// patches are parsed with the same schema so they may reference `process.env`.
-// Load-only: this schema never dumps, so no `predicate`/`represent`.
-const jsExprType = new yaml.Type('tag:yaml.org,2002:js', {
-  kind: 'scalar',
-  resolve: data => typeof data === 'string',
-  construct: data => ({ __jsExpr: String(data) }),
-})
-const personalPatchesSchema = yaml.JSON_SCHEMA.extend(jsExprType)
+// The include's YAML dialect (`!!js` scalars become expression nodes the
+// Loader interpolates against each entry's context at mount time), imported
+// from the include itself so patch parsing and config dumping can never drift
+// from what the include mounts. Personal patches share it so they may
+// reference `process.env`.
+const personalPatchesSchema = entryListSchema
 
 /**
  * Load the optional personal overlay patches (`config.yaml` under the Harness
@@ -149,6 +145,141 @@ function parsePatchList(
   return parsed as PatchOptions[]
 }
 
+/** One overlay patch list with the label provenance comments print for it. */
+export interface ConfigDumpLayer {
+  /** Source name shown in provenance comments (a file basename or path). */
+  label: string
+  /** The layer's patches, from {@link loadOverlayPatches} / {@link loadPersonalPatches}. */
+  patches: PatchOptions[]
+}
+
+/**
+ * Compose the effective entry list exactly as `boot()` would mount it: parse
+ * the base config file with the include's entry-list dialect, apply every
+ * layer's patches as ONE flattened list through the include's own patch
+ * algorithm (`applyEntryPatches`) — the same single call `boot()` makes, so
+ * even patch-visibility corner cases (a later layer targeting a group child a
+ * plain config replacement introduced, which the single-pass id index never
+ * sees) compose identically — then render the result as YAML in the same
+ * dialect (`!!js` expressions print verbatim, unevaluated).
+ *
+ * Every run of rows with the same provenance is preceded by a `# ==` comment
+ * naming the file that contributed the rows and any layers that patched them,
+ * so the output stays a loadable YAML document while showing which section
+ * comes from which file. Provenance is derived from single-call prefix
+ * snapshots (base + layers 1..k), diffed positionally: the patch algorithm
+ * only rewrites rows in place or appends, so a top-level index identifies one
+ * row across snapshots, and a layer whose addition changes the row (config
+ * replacement, disable, group insert) is listed as having patched it.
+ *
+ * A patch that matches no row is reported through `warn` with its layer
+ * label, mirroring the Loader's boot-time warning. Earlier layers' patches
+ * see an identical preceding state in every snapshot that includes them, so
+ * each snapshot's warning list extends the previous one and the new tail
+ * belongs to the added layer.
+ * @param binName - the diagnostic prefix on read/parse errors.
+ * @param absoluteConfigPath - the base config file `boot()` would include.
+ * @param layers - overlay layers in application order (later wins).
+ * @param warn - sink for skipped-patch diagnostics; defaults to stderr.
+ * @returns the composed entry list rendered as a YAML document with
+ * provenance comment separators.
+ */
+export function renderConfigDump(
+  binName: string,
+  absoluteConfigPath: string,
+  layers: ConfigDumpLayer[],
+  warn: (line: string) => void = line => void process.stderr.write(`${line}\n`),
+): string {
+  let content: string
+  try {
+    content = readFileSync(absoluteConfigPath, 'utf8')
+  } catch (error) {
+    throw new Error(`${binName}: failed to read config ${absoluteConfigPath}: ${String(error)}`)
+  }
+  let parsed: unknown
+  try {
+    parsed = yaml.load(content, { schema: entryListSchema })
+  } catch (error) {
+    throw new Error(`${binName}: failed to parse config ${absoluteConfigPath}: ${String(error)}`)
+  }
+  if (!Array.isArray(parsed)) {
+    throw new Error(`${binName}: config ${absoluteConfigPath} must be a top-level YAML array of entries`)
+  }
+  const baseLabel = basename(absoluteConfigPath)
+  // The YAML boundary yields untyped rows; the include validates entry shape
+  // at mount, and the dump prints whatever the file holds, so `EntryOptions`
+  // here is structural trust in the same file `boot()` would include.
+  const base = parsed as Parameters[0]
+  // snapshot_k = ONE application of layers 1..k flattened — boot's exact call
+  // shape for that prefix. snapshot_N is therefore the mounted composition.
+  // The patches are cloned per call: applyEntryPatches detaches the entry
+  // list but pushes `insert` rows by reference from the patch list, so
+  // sharing patch objects across snapshot calls would leak a later
+  // snapshot's mutations into an earlier one's result.
+  const snapshot = (count: number, warnings: string[]): ReturnType => {
+    const flattened = structuredClone(layers.slice(0, count).flatMap(layer => layer.patches))
+    return applyEntryPatches(base, flattened, (message: string, ...args: unknown[]) => {
+      // The include logs through cordis's printf-style logger (`%C` = code); a
+      // dump has no logger, so substitute inline for a plain line.
+      let index = 0
+      warnings.push(message.replace(/%C/g, () => JSON.stringify(args[index++])))
+    })
+  }
+  let previous = base
+  let previousWarnings: string[] = []
+  const provenance: { origin: string; patchedBy: string[] }[] = base.map(() => ({ origin: baseLabel, patchedBy: [] }))
+  let composed = base
+  for (let count = 1; count <= layers.length; count += 1) {
+    const layer = layers[count - 1]
+    /* v8 ignore next -- count iterates 1..length, so the slot exists */
+    if (layer === undefined) continue
+    const warnings: string[] = []
+    composed = snapshot(count, warnings)
+    for (const line of warnings.slice(previousWarnings.length)) {
+      warn(`${binName}: [${layer.label}] ${line}`)
+    }
+    const before = previous.map(entry => JSON.stringify(entry))
+    for (let index = 0; index < composed.length; index += 1) {
+      if (index >= before.length) provenance.push({ origin: layer.label, patchedBy: [] })
+      else if (JSON.stringify(composed[index]) !== before[index]) provenance[index]?.patchedBy.push(layer.label)
+    }
+    previous = composed
+    previousWarnings = warnings
+  }
+  return groupedDump(composed, provenance)
+}
+
+/** Render the composed rows grouped under one provenance comment per contiguous run. */
+function groupedDump(
+  composed: readonly unknown[],
+  provenance: readonly { origin: string; patchedBy: string[] }[],
+): string {
+  const lines: string[] = []
+  let currentLabel: string | undefined
+  let group: unknown[] = []
+  const flush = (): void => {
+    if (currentLabel === undefined || group.length === 0) return
+    lines.push(`# == ${currentLabel}`)
+    lines.push(yaml.dump(group, { schema: entryListSchema, noRefs: true }).trimEnd())
+    group = []
+  }
+  for (let index = 0; index < composed.length; index += 1) {
+    const record = provenance[index]
+    /* v8 ignore next -- provenance is index-aligned with composed by construction */
+    if (record === undefined) continue
+    const label = record.patchedBy.length === 0
+      ? record.origin
+      : `${record.origin}, patched by ${record.patchedBy.join(', ')}`
+    if (label !== currentLabel) {
+      flush()
+      currentLabel = label
+    }
+    group.push(composed[index])
+  }
+  flush()
+  return lines.join('\n') + '\n'
+}
+
 /**
  * The slice of `process` {@link installFailLoud} needs — injectable so tests
  * exercise the handler without registering on (or exiting) the real process.
diff --git a/packages/ui/app-boot/tests/config-dump.spec.ts b/packages/ui/app-boot/tests/config-dump.spec.ts
new file mode 100644
index 0000000000..99af81f2c2
--- /dev/null
+++ b/packages/ui/app-boot/tests/config-dump.spec.ts
@@ -0,0 +1,187 @@
+/**
+ * `renderConfigDump` behavior: the offline composition must equal what
+ * `boot()` mounts (same parser, same patch algorithm), print `!!js`
+ * expressions verbatim, separate provenance runs with comment lines while
+ * staying one loadable YAML document, and report skipped patches through
+ * `warn` instead of failing — mirroring the Loader's boot-time warning for a
+ * shared overlay whose row exists only on another surface.
+ */
+
+import { mkdtempSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, vi } from 'vitest'
+import * as yaml from 'js-yaml'
+import { entryListSchema } from '@cordisjs/plugin-include'
+import { loadOverlayPatches, renderConfigDump } from '../src/index.ts'
+
+const NAME = 'dsh-test-bin'
+
+const tmp = (): string => mkdtempSync(join(tmpdir(), 'dsh-config-dump-'))
+
+function writeBase(dir: string): string {
+  const base = join(dir, 'base.yml')
+  writeFileSync(base, [
+    '- id: shared',
+    '  name: ./noop.mjs',
+    '  config:',
+    '    value: base',
+    '    key: !!js process.env.DSH_DUMP_SPEC',
+    '- id: untouched',
+    '  name: ./noop.mjs',
+    '',
+  ].join('\n'))
+  return base
+}
+
+describe('renderConfigDump', () => {
+  it('composes overlay layers in order, prints !!js verbatim, and labels each section with its provenance', () => {
+    const dir = tmp()
+    const base = writeBase(dir)
+    const surface = join(dir, 'surface.yml')
+    writeFileSync(surface, [
+      '- id: shared',
+      '  config:',
+      '    value: surface',
+      '    key: !!js process.env.DSH_DUMP_SPEC',
+      '- insert:',
+      '    - id: surface-extra',
+      '      name: ./noop.mjs',
+      '',
+    ].join('\n'))
+    const personal = join(dir, 'personal.yml')
+    writeFileSync(personal, [
+      '- id: surface-extra',
+      '  config:',
+      '    value: personal',
+      '',
+    ].join('\n'))
+
+    const dump = renderConfigDump(NAME, base, [
+      { label: 'surface.yml', patches: loadOverlayPatches(NAME, surface) },
+      { label: 'personal.yml', patches: loadOverlayPatches(NAME, personal) },
+    ], () => {})
+    // Comments do not break loadability: the dump parses as one document
+    // equal to what boot() would mount.
+    const parsed = yaml.load(dump, { schema: entryListSchema }) as {
+      id: string
+      config?: Record
+    }[]
+    expect(parsed).toEqual([
+      {
+        id: 'shared',
+        name: './noop.mjs',
+        config: { value: 'surface', key: { __jsExpr: 'process.env.DSH_DUMP_SPEC' } },
+      },
+      { id: 'untouched', name: './noop.mjs' },
+      { id: 'surface-extra', name: './noop.mjs', config: { value: 'personal' } },
+    ])
+    // Unevaluated: the expression text round-trips as a !!js scalar.
+    expect(dump).toContain('!!js process.env.DSH_DUMP_SPEC')
+    // Provenance separators: origin file, plus every layer that changed the
+    // row; an inserted row carries the inserting layer as its origin.
+    expect(dump).toContain('# == base.yml, patched by surface.yml')
+    expect(dump).toContain('# == base.yml\n- id: untouched')
+    expect(dump).toContain('# == surface.yml, patched by personal.yml\n- id: surface-extra')
+    expect(dump.indexOf('# == base.yml, patched by surface.yml')).toBeLessThan(dump.indexOf('# == base.yml\n- id: untouched'))
+  })
+
+  it('groups contiguous same-provenance rows under one separator', () => {
+    const dir = tmp()
+    const base = join(dir, 'base.yml')
+    writeFileSync(base, [
+      '- id: a',
+      '  name: ./noop.mjs',
+      '- id: b',
+      '  name: ./noop.mjs',
+      '',
+    ].join('\n'))
+    const dump = renderConfigDump(NAME, base, [], () => {})
+    expect(dump.match(/# == base\.yml/g)).toHaveLength(1)
+    expect(dump).toContain('# == base.yml\n- id: a')
+  })
+
+  it('composes all layers as one flattened patch list, exactly like boot()', () => {
+    // boot() flattens every layer into ONE applyEntryPatches call, whose id
+    // index sees inserted rows but NOT children introduced by a plain group
+    // `config` replacement. A per-layer composition would rebuild the index
+    // between layers and let the second layer patch that child — a tree the
+    // real boot never mounts. Pin the single-call semantics: the child patch
+    // is skipped (with the layer-labeled warning), matching boot.
+    const dir = tmp()
+    const base = join(dir, 'base.yml')
+    writeFileSync(base, [
+      '- id: g',
+      '  name: ./group.mjs',
+      '  group: true',
+      '  config: []',
+      '',
+    ].join('\n'))
+    const warnings: string[] = []
+    const dump = renderConfigDump(NAME, base, [
+      {
+        label: 'a.yml',
+        patches: [{ id: 'g', config: [{ id: 'child', name: './noop.mjs', config: { v: 1 } }] }],
+      },
+      { label: 'b.yml', patches: [{ id: 'child', config: { v: 2 } }] },
+    ], line => void warnings.push(line))
+    expect(warnings).toEqual([`${NAME}: [b.yml] patch: entry "child" not found`])
+    const parsed = yaml.load(dump, { schema: entryListSchema }) as {
+      config?: { config?: { v?: number } }[]
+    }[]
+    expect(parsed[0]?.config?.[0]?.config?.v).toBe(1)
+    // The skipped layer did not change the row, so it is not in provenance.
+    expect(dump).toContain('# == base.yml, patched by a.yml\n- id: g')
+    expect(dump).not.toContain('b.yml\n- id: g')
+  })
+
+  it('reports a patch whose target row is absent through warn with its layer label and keeps composing', () => {
+    const dir = tmp()
+    const base = writeBase(dir)
+    const overlay = join(dir, 'overlay.yml')
+    writeFileSync(overlay, [
+      '- id: only-on-another-surface',
+      '  config:',
+      '    value: ignored',
+      '- id: shared',
+      '  config:',
+      '    value: patched',
+      '',
+    ].join('\n'))
+    const warnings: string[] = []
+    const dump = renderConfigDump(
+      NAME, base,
+      [{ label: 'overlay.yml', patches: loadOverlayPatches(NAME, overlay) }],
+      line => void warnings.push(line),
+    )
+    expect(warnings).toEqual([`${NAME}: [overlay.yml] patch: entry "only-on-another-surface" not found`])
+    const parsed = yaml.load(dump, { schema: entryListSchema }) as { config?: { value?: string } }[]
+    expect(parsed[0]?.config?.value).toBe('patched')
+  })
+
+  it('defaults its warn sink to one stderr line per skipped patch', () => {
+    const dir = tmp()
+    const base = writeBase(dir)
+    const write = vi.spyOn(process.stderr, 'write').mockReturnValue(true)
+    try {
+      renderConfigDump(NAME, base, [{ label: 'x.yml', patches: [{ id: 'absent', config: {} }] }])
+      expect(write).toHaveBeenCalledWith(`${NAME}: [x.yml] patch: entry "absent" not found\n`)
+    } finally {
+      write.mockRestore()
+    }
+  })
+
+  it('fails loud on a missing, unparsable, or non-array base config', () => {
+    const dir = tmp()
+    expect(() => renderConfigDump(NAME, join(dir, 'absent.yml'), [], () => {}))
+      .toThrow(new RegExp(`^${NAME}: failed to read config `))
+    const invalid = join(dir, 'invalid.yml')
+    writeFileSync(invalid, 'invalid: [unclosed\n')
+    expect(() => renderConfigDump(NAME, invalid, [], () => {}))
+      .toThrow(new RegExp(`^${NAME}: failed to parse config `))
+    const scalar = join(dir, 'scalar.yml')
+    writeFileSync(scalar, 'id: not-a-list\n')
+    expect(() => renderConfigDump(NAME, scalar, [], () => {}))
+      .toThrow('must be a top-level YAML array of entries')
+  })
+})
diff --git a/packages/ui/user-approval/README.i18n.yaml b/packages/ui/user-approval/README.i18n.yaml
index 453c761357..724317c899 100644
--- a/packages/ui/user-approval/README.i18n.yaml
+++ b/packages/ui/user-approval/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/ui/user-approval/README.md
-README.md: 38bcfbfe81c3ff5f16d1835259bd4c35a06dcb64
-README.zh.md: 7f2678d8572b191ec88a326374420dde7deed3dc
+README.md: 7b87a75d1c7c43874c484bc11f8deed45cb523ce
+README.zh.md: c15871073231b6e97f37fc0338f4824025ba86ca
diff --git a/packages/ui/user-approval/README.md b/packages/ui/user-approval/README.md
index 38bcfbfe81..7b87a75d1c 100644
--- a/packages/ui/user-approval/README.md
+++ b/packages/ui/user-approval/README.md
@@ -8,38 +8,37 @@ Each request must belong to an open agent turn. The service appends a paired `ap
 
 Answerers are `approval/request` waterfall listeners. Return an outcome to answer for an owned agent or call `next()` to delegate. Agent-scoped listeners receive only that agent's requests; compose one terminal answerer per deployment because sibling listener order is not a policy priority mechanism. The ACP automation bridge supplies one-shot machine decisions for sessions it owns.
 
-`ApprovalPolicy` is `'ask'` or `'never'`. The effective value is the last `approval/policy` event, falling back to config; `setApprovalPolicy()` is the write path. `'never'` rejects before interactive dispatch and is the only policy stated in the prompt. Switches produce at most one coalesced notice, attributed to the user when the override follows the last `request/header` and to operator/config otherwise.
+`ApprovalPolicy` is `'ask'` or `'never'`. The effective value is the last `approval/policy` event, falling back to config; `setApprovalPolicy()` is the write path. `'never'` rejects before interactive dispatch. Both policies contribute their complete current meaning to the cache-safe runtime-context snapshot.
 
 The tools pipeline routes `ask` decisions through this seam and fails closed when it is absent; the sandboxed bash tool also uses it for escalated retries. The ACP automation bridge answers calls for its own agents through the client's machine policy. Audit events remain log-only, so the model sees only the asking consumer's result. See the [approval-seam Agent Note](../../../.agents/notes/implemented/feature/2026-07-06-approval-seam.md) and [sandbox Agent Note](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md).
 
 ## Model Experience
 
-### System prompt and policy notice
+### Current approval policy context
 
 #### What the model sees
 
-Under `ask`, every agent request carries the ask-policy prompt section below. Under `never`, it carries the never-policy prompt section below. A policy switch injects exactly `The approval policy changed from "" to "" (changed by the user).` or `The approval policy changed from "" to "" (changed by the operator/config).` before the next step.
+The first request and each effective policy change append a full runtime-context snapshot after retained history. Under `ask`, the approval contribution states that configured answerers may be consulted and absence fails closed. Under `never`, it states the deterministic rejection and non-escalation consequence. Unchanged requests retain the earlier snapshot without adding another message.
 
-##### Ask-policy prompt section
+##### Ask-policy contribution
 
 ```markdown
-
+Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed.
 ```
 
-##### Never-policy prompt section
+##### Never-policy contribution
 
 ```markdown
 Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
 ```
 
 #### Token effect
 
-Small fixed per-request cost, larger under `never`; a change notice is conditional and retained in history.
+One concise context message on the first request and on an effective change; unchanged requests add no duplicate policy tokens.
 
 #### KV Cache effect
 
-Prefix-stable while the approval policy is unchanged. An `ask`/`never` switch changes the system-prompt section and invalidates reuse from its first changed token; the accompanying notice is append-only.
+Append-only after retained history. An `ask`/`never` switch preserves the stable system and conversation prefix instead of rewriting the first wire message.
 
 ### Tool outcome
 
diff --git a/packages/ui/user-approval/README.zh.md b/packages/ui/user-approval/README.zh.md
index 7f2678d857..c158710732 100644
--- a/packages/ui/user-approval/README.zh.md
+++ b/packages/ui/user-approval/README.zh.md
@@ -8,38 +8,37 @@
 
 应答者是 `approval/request` waterfall（瀑布式事件）监听器。要回答其负责的 agent 请求，请返回一个结果；否则调用 `next()` 委托。限定到 agent 的监听器只接收该 agent 的请求；每项部署应当组合一个最终应答者，因为同级监听器的顺序不是策略优先级机制。ACP（Agent Client Protocol）自动化桥接层为其负责的会话提供一次性机器决定。
 
-`ApprovalPolicy` 为 `'ask'` 或 `'never'`。实际值取最后一条 `approval/policy` 事件，并回退到配置；`setApprovalPolicy()` 是写入路径。`'never'` 会在交互式分发之前拒绝请求，也是提示词中唯一声明的策略。切换最多产生一条合并通知：如果覆盖发生在最后一个 `request/header` 之后，则归因于用户；否则归因于操作方／配置。
+`ApprovalPolicy` 为 `'ask'` 或 `'never'`。实际值取最后一条 `approval/policy` 事件，并回退到配置；`setApprovalPolicy()` 是写入路径。`'never'` 会在交互式分发之前拒绝请求。两种策略都会将各自完整的当前含义贡献给缓存安全的运行时上下文快照。
 
 工具流水线通过此 seam 路由 `ask` 决定，并在该 seam 缺失时以拒绝方式关闭；沙箱 bash 工具也会将它用于升权重试。ACP 自动化桥接层根据客户端的机器策略，回答其自有 agent 的调用。审计事件仍只写入日志，因此模型只会看到发起请求的消费方所返回的结果。详见[审批 seam Agent Note（agent 决策记录）](../../../.agents/notes/implemented/feature/2026-07-06-approval-seam.md)和[沙箱 Agent Note](../../../.agents/notes/implemented/feature/2026-07-06-sandbox.md)。
 
 ## 模型体验
 
-### 系统提示词与策略通知
+### 当前审批策略上下文
 
 #### 模型看到的内容
 
-在 `ask` 下，每个 agent 请求都会携带下方的 ask 策略提示词段。在 `never` 下，请求会携带下方的 never 策略提示词段。策略切换会在下一步骤前精确注入 `The approval policy changed from "" to "" (changed by the user).` 或 `The approval policy changed from "" to "" (changed by the operator/config).`。
+首次请求和有效策略每次变化时，都会在保留的历史后追加一份完整运行时上下文快照。在 `ask` 下，批准贡献会说明可咨询已配置的应答者，缺少应答者时以拒绝方式关闭。在 `never` 下，它会说明确定性的拒绝与非升权后果。未变化的请求会保留先前快照，不增加另一条消息。
 
-##### Ask 策略提示词段
+##### Ask 策略贡献
 
 ```markdown
-
+Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed.
 ```
 
-##### Never 策略提示词段
+##### Never 策略贡献
 
 ```markdown
 Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).
-
 ```
 
 #### Token 影响
 
-每个请求有少量固定成本，`never` 下的成本更高；变更通知按条件出现，并保留在历史中。
+首次请求和策略实际变化时增加一条简洁的上下文消息；未变化的请求不增加重复的策略 token。
 
 #### KV Cache 影响
 
-审批策略不变时，前缀保持稳定。`ask`／`never` 切换会改变系统提示词段，并从首个变化的 token 开始使复用失效；随附通知只会追加。
+在保留的历史之后仅追加。`ask`／`never` 切换会保留稳定的系统与对话前缀，而不会改写第一条 wire 消息。
 
 ### 工具结果
 
diff --git a/packages/ui/user-approval/src/index.ts b/packages/ui/user-approval/src/index.ts
index e4f60da037..793a7a4693 100644
--- a/packages/ui/user-approval/src/index.ts
+++ b/packages/ui/user-approval/src/index.ts
@@ -8,7 +8,7 @@ import { randomUUID } from 'node:crypto'
 import { Context, Service } from 'cordis'
 import z from 'schemastery'
 import type { Agent } from '@deepseek-ai/dsh-agent'
-import { createUserMessage, type CallId } from '@deepseek-ai/dsh-llm'
+import type { CallId } from '@deepseek-ai/dsh-llm'
 import { scopeTarget } from '@deepseek-ai/dsh-scope'
 import type { Scoped } from '@deepseek-ai/dsh-scope'
 import type { Session, SessionEvent } from '@deepseek-ai/dsh-session'
@@ -59,7 +59,7 @@ declare module '@deepseek-ai/dsh-session' {
     /**
      * The session's approval policy was switched — log-only, durable,
      * replayable, never in the model transcript (the model learns the policy
-     * from the prompt section and the narrator's notices). The LAST such
+     * from the cache-safe runtime-context snapshot). The LAST such
      * event is the session's override ({@link effectiveApprovalPolicy}).
      * `source: 'delegation'` marks an override seeded into a child; an absent
      * source is a runtime switch.
@@ -90,41 +90,17 @@ const OUTCOMES: readonly ApprovalOutcome[] = ['allowed-once', 'rejected', 'cance
  *   (exactly today's behavior).
  * - `'never'` — never prompt anyone: every ask resolves `'rejected'`
  *   deterministically. The strict headless stance (CI, unattended runs) and
- *   the only policy value stated in the system prompt — unlike `'ask'`, its
- *   outcome is knowable without asking, so stating it cannot overclaim.
+ *   the policy whose outcome is knowable without asking.
  */
 export type ApprovalPolicy = 'ask' | 'never'
 
 /** Every {@link ApprovalPolicy}, for option advertisement and runtime validation of untrusted policy strings. */
 export const APPROVAL_POLICIES: readonly ApprovalPolicy[] = ['ask', 'never']
 
-/**
- * The prompt sentence stating a `'never'` policy — visibility for the one
- * deterministic policy (see {@link ApprovalPolicy}). Narrator persistence
- * does NOT parse this prose: deployments can quote it in a persona or another
- * section, so the section also emits a source-owned marker.
- */
+/** Model-facing statement for the deterministic `'never'` policy. */
 const NEVER_SENTENCE = 'Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).'
-
-/** Source-owned prompt markers used to reconstruct the policy in a logged header. */
-const POLICY_MARKERS = {
-  ask: '',
-  never: '',
-} as const satisfies Record
-
-/**
- * Read the policy fact emitted by this service from a logged system prompt.
- * The section is ordered after deployment persona text, and the last marker
- * wins so a persona quoting an earlier marker cannot shadow the service's own
- * contribution. Ordinary policy prose is deliberately ignored.
- */
-function toldApprovalPolicy(system: string | undefined): ApprovalPolicy | undefined {
-  if (system === undefined) return undefined
-  const ask = system.lastIndexOf(POLICY_MARKERS.ask)
-  const never = system.lastIndexOf(POLICY_MARKERS.never)
-  if (ask < 0 && never < 0) return undefined
-  return never > ask ? 'never' : 'ask'
-}
+/** Model-facing statement for an interactive policy that may still fail closed. */
+const ASK_SENTENCE = 'Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed.'
 
 /**
  * The session's approval-policy override: the last `approval/policy` event in
@@ -212,7 +188,7 @@ export interface Config {
 /**
  * Approval service that applies session policy before answerers and logs every
  * ask/outcome pair to the requesting session. It exposes deterministic policy
- * changes to the model through prompt and pre-step notices.
+ * changes to the model through the cache-safe runtime-context snapshot.
  */
 export class ApprovalService extends Service {
   static Config: z = z.object({
@@ -224,9 +200,10 @@ export class ApprovalService extends Service {
 
     const effective = (agent: Agent): ApprovalPolicy => this.effectivePolicy(agent.session)
 
-    // State only deterministic policy; a marker records the otherwise silent state.
+    // The complete current value travels after retained history, so switching
+    // policy does not rewrite the stable system-prompt cache prefix.
     ctx.inject(['systemPrompt'], (scope: Context) => {
-      scope.systemPrompt.section({
+      scope.systemPrompt.context({
         name: 'approval:policy',
         order: 115,
         text: (context) => {
@@ -234,54 +211,10 @@ export class ApprovalService extends Service {
           // A bare assemble() (tests, diagnostics) has no session to state.
           if (agent === undefined) return ''
           const policy = effective(agent)
-          return policy === 'never' ? `${NEVER_SENTENCE}\n${POLICY_MARKERS.never}` : POLICY_MARKERS.ask
+          return policy === 'never' ? NEVER_SENTENCE : ASK_SENTENCE
         },
       })
     })
-
-    // Visibility layer 2: the boundary narrator. agent/step runs before the
-    // request history is derived, so the notice is
-    // seen by THIS step's request: idle-time flip-flops coalesce at the
-    // turn's first step (net-zero → nothing), and a mid-turn switch is
-    // narrated no later than the next step. What each session was last told
-    // is in-memory with a log-derived fallback (the folded header's system
-    // text), so restarts lose nothing. Attribution is positional: an
-    // override event after the log's last `request/header` was a runtime
-    // switch by the user; otherwise the configured default moved under the
-    // session (operator/config).
-    const narrated = new WeakMap()
-    ctx.on('agent/step', (agent) => {
-      const session = agent.session
-      const events = session.events
-      let overrideIndex = -1
-      let overrideSource: 'delegation' | undefined
-      let headerIndex = -1
-      for (let index = events.length - 1; index >= 0 && (overrideIndex < 0 || headerIndex < 0); index -= 1) {
-        const event = events[index] as (typeof events)[number]
-        if (overrideIndex < 0 && event.type === 'approval/policy') {
-          overrideIndex = index
-          overrideSource = event.data.source
-        } else if (headerIndex < 0 && event.type === 'request/header') {
-          headerIndex = index
-        }
-      }
-      // Same fold effectivePolicy performs — override is scanned here anyway
-      // for POSITIONAL attribution; the default lives once, in the method.
-      const current = this.effectivePolicy(session)
-      const header = session.requestHeader()
-      const told = narrated.get(session) ?? toldApprovalPolicy(header?.system)
-      narrated.set(session, current)
-      // Cold start (nothing ever told) narrates nothing — the section about
-      // to go out states the truth, and there is no delta to explain.
-      if (told === undefined || told === current) return
-      const cause = overrideSource === 'delegation'
-        ? 'inherited from the delegating session'
-        : overrideIndex > headerIndex ? 'changed by the user' : 'changed by the operator/config'
-      agent.inject(createUserMessage({
-        content: [{ type: 'text', text: `The approval policy changed from "${told}" to "${current}" (${cause}).` }],
-        source: { kind: 'plugin', plugin: 'user-approval' },
-      }))
-    })
   }
 
   /**
diff --git a/packages/ui/user-approval/tests/approval.spec.ts b/packages/ui/user-approval/tests/approval.spec.ts
index 0d586049fa..ca54862ba4 100644
--- a/packages/ui/user-approval/tests/approval.spec.ts
+++ b/packages/ui/user-approval/tests/approval.spec.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it, vi } from 'vitest'
 import { Context } from 'cordis'
-import { agentEvents, type Agent } from '@deepseek-ai/dsh-agent'
+import type { Agent } from '@deepseek-ai/dsh-agent'
 import { CallId } from '@deepseek-ai/dsh-llm'
 import { carrierKeyOf, createScope } from '@deepseek-ai/dsh-scope'
 import type { Scope } from '@deepseek-ai/dsh-scope'
@@ -351,33 +351,17 @@ describe('ApprovalService.request', () => {
 
 describe('approval policy (the approval/policy fold)', () => {
   const NEVER_SENTENCE = 'Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).'
-  const ASK_MARKER = ''
-  const NEVER_MARKER = ''
+  const ASK_SENTENCE = 'Approval policy: ask. Operations that require approval may ask through the configured answerers; without an available answerer, the request fails closed.'
 
-  /**
-   * An agent stand-in over a REAL Session — gate, section, and narrator fold
-   * real events; the opened turn satisfies request()'s enclosure precondition.
-   */
-  function sessionAgent(id: string): { agent: Agent; session: Session; injected: string[] } {
+  /** Agent stand-in over a real Session; the opened turn satisfies request()'s enclosure precondition. */
+  function sessionAgent(id: string): { agent: Agent; session: Session } {
     const session = new Session(SessionId(id))
     session.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
-    const injected: string[] = []
     const agent = {
       id,
       session,
-      inject: (input: { content: Array<{ type: string; text: string }> }) => {
-        injected.push(input.content[0]?.text ?? '')
-      },
     } as unknown as Agent
-    return { agent, session, injected }
-  }
-
-  const preStep = (ctx: Context, agent: Agent): Promise =>
-    agentEvents(ctx, agent).serial('agent/step', 1, 1, new AbortController().signal)
-
-  /** Append a `request/header` snapshot whose system text is exactly `system`. */
-  function appendHeader(session: Session, system: string): void {
-    session.append('request/header', { header: { config: { provider: 'mock', model: 'mock' }, system }, reason: 'initial' })
+    return { agent, session }
   }
 
   it('folds to the last event, or undefined without one', () => {
@@ -464,131 +448,46 @@ describe('approval policy (the approval/policy fold)', () => {
     await expect(ctx.approval.request({ agent, toolName: 'bash' })).resolves.toBe('rejected')
   })
 
-  it('states never (and only never) in prose while recording either policy with a source-owned marker', async () => {
+  it('contributes the complete current ask or never policy as cache-safe context', async () => {
     const ctx = new Context()
     await ctx.plugin(SystemPrompt)
     await ctx.plugin(ApprovalService)
     const askAgent = sessionAgent('sess-sect-ask').agent
     const { agent: neverAgent, session } = sessionAgent('sess-sect-never')
     setApprovalPolicy(session, 'never')
-    const sectionFor = async (context: object) =>
-      (await ctx.systemPrompt.assemble(context)).sections.find(s => s.name === 'approval:policy')?.text
-    expect(await sectionFor({ agent: askAgent })).toBe(ASK_MARKER)
-    expect(await sectionFor({ agent: neverAgent })).toBe(`${NEVER_SENTENCE}\n${NEVER_MARKER}`)
+    const contextFor = async (context: object) =>
+      (await ctx.systemPrompt.assemble(context)).contexts.find(entry => entry.name === 'approval:policy')?.text
+    expect(await contextFor({ agent: askAgent })).toBe(ASK_SENTENCE)
+    expect(await contextFor({ agent: neverAgent })).toBe(NEVER_SENTENCE)
     // A bare assemble (no agent) has no session to state.
-    expect(await sectionFor({})).toBe('')
+    expect(await contextFor({})).toBe('')
   })
 
-  it('narrates nothing cold, once per coalesced switch (user wording), and idempotently', async () => {
+  it('reflects the latest durable switch and stays byte-stable while unchanged', async () => {
     const ctx = new Context()
+    await ctx.plugin(SystemPrompt)
     await ctx.plugin(ApprovalService)
-    const { agent, session, injected } = sessionAgent('sess-narr-1')
-    await preStep(ctx, agent)
-    expect(injected).toEqual([])
+    const { agent, session } = sessionAgent('sess-context-switch')
+    const contextFor = async () =>
+      (await ctx.systemPrompt.assemble({ agent })).contexts.find(entry => entry.name === 'approval:policy')?.text
+    expect(await contextFor()).toBe(ASK_SENTENCE)
+    expect(await contextFor()).toBe(ASK_SENTENCE)
     setApprovalPolicy(session, 'never')
     setApprovalPolicy(session, 'ask')
     setApprovalPolicy(session, 'never')
-    await preStep(ctx, agent)
-    expect(injected).toEqual(['The approval policy changed from "ask" to "never" (changed by the user).'])
-    await preStep(ctx, agent)
-    expect(injected).toHaveLength(1)
-    setApprovalPolicy(session, 'ask')
-    setApprovalPolicy(session, 'never')
-    await preStep(ctx, agent)
-    expect(injected).toHaveLength(1)
+    expect(await contextFor()).toBe(NEVER_SENTENCE)
+    expect(await contextFor()).toBe(NEVER_SENTENCE)
   })
 
-  it('reads what the model was told back from the folded header text after a restart', async () => {
-    // A session whose last request carried the never sentence resumes under
-    // an ask default: the narrator attributes the change to the operator.
-    const ctx = new Context()
-    await ctx.plugin(ApprovalService)
-    const { agent, session, injected } = sessionAgent('sess-narr-2')
-    appendHeader(session, `persona\n\n${NEVER_SENTENCE}\n${NEVER_MARKER}`)
-    await preStep(ctx, agent)
-    expect(injected).toEqual(['The approval policy changed from "never" to "ask" (changed by the operator/config).'])
-  })
-
-  it('attributes a constructor-seeded policy event to delegation', async () => {
-    const ctx = new Context()
-    await ctx.plugin(ApprovalService)
-    const { agent, session, injected } = sessionAgent('sess-narr-inherited')
-    appendHeader(session, ASK_MARKER)
-    session.append('approval/policy', { policy: 'never', source: 'delegation' })
-
-    await preStep(ctx, agent)
-
-    expect(injected).toEqual(['The approval policy changed from "ask" to "never" (inherited from the delegating session).'])
-  })
-
-  it('narrates a config default drift from the logged ask marker', async () => {
-    const ctx = new Context()
-    await ctx.plugin(ApprovalService, { policy: 'never' })
-    const { agent, session, injected } = sessionAgent('sess-narr-3')
-    appendHeader(session, `persona only\n${ASK_MARKER}`)
-    await preStep(ctx, agent)
-    expect(injected).toEqual(['The approval policy changed from "ask" to "never" (changed by the operator/config).'])
-  })
-
-  it('a pinned override survives a default change silently', async () => {
-    const ctx = new Context()
-    await ctx.plugin(ApprovalService, { policy: 'never' })
-    const { agent, session, injected } = sessionAgent('sess-narr-4')
-    appendHeader(session, `persona only\n${ASK_MARKER}`)
-    setApprovalPolicy(session, 'ask')
-    appendHeader(session, `persona only\n${ASK_MARKER}`)
-    await preStep(ctx, agent)
-    expect(injected).toEqual([])
-  })
-
-  it('does not infer never from deployment prose that quotes the never sentence', async () => {
-    const ctx = new Context()
-    await ctx.plugin(ApprovalService)
-    const { agent, session, injected } = sessionAgent('sess-narr-spoof-prose')
-    appendHeader(session, `persona quotes this warning: ${NEVER_SENTENCE}\n${ASK_MARKER}`)
-    await preStep(ctx, agent)
-    expect(injected).toEqual([])
-  })
-
-  it('treats a legacy header with no source-owned marker as untold', async () => {
-    const ctx = new Context()
-    await ctx.plugin(ApprovalService, { policy: 'never' })
-    const { agent, session, injected } = sessionAgent('sess-narr-unmarked-header')
-    appendHeader(session, 'legacy persona-only header')
-    await preStep(ctx, agent)
-    expect(injected).toEqual([])
-  })
-
-  it('uses the service marker after an earlier persona marker', async () => {
-    const ctx = new Context()
-    await ctx.plugin(ApprovalService)
-    const { agent, session, injected } = sessionAgent('sess-narr-spoof-marker')
-    appendHeader(session, `persona quotes ${NEVER_MARKER}\n${ASK_MARKER}`)
-    await preStep(ctx, agent)
-    expect(injected).toEqual([])
-  })
-
-  it('disposes the service prompt section and pre-step narrator together (HMR safety)', async () => {
+  it('disposes the service context contribution with its fiber (HMR safety)', async () => {
     const ctx = new Context()
     await ctx.plugin(SystemPrompt)
     const fiber = await ctx.plugin(ApprovalService)
     const live = sessionAgent('sess-hmr-service-live')
-    const afterDispose = sessionAgent('sess-hmr-service-disposed')
-    const sectionFor = async () =>
-      (await ctx.systemPrompt.assemble({ agent: live.agent })).sections.find(section => section.name === 'approval:policy')
-    expect(await sectionFor()).toBeDefined()
-
-    appendHeader(live.session, `persona\n${ASK_MARKER}`)
-    setApprovalPolicy(live.session, 'never')
-    await preStep(ctx, live.agent)
-    expect(live.injected).toEqual(['The approval policy changed from "ask" to "never" (changed by the user).'])
-
-    appendHeader(afterDispose.session, `persona\n${ASK_MARKER}`)
-    setApprovalPolicy(afterDispose.session, 'never')
+    const contextFor = async () =>
+      (await ctx.systemPrompt.assemble({ agent: live.agent })).contexts.find(context => context.name === 'approval:policy')
+    expect(await contextFor()).toBeDefined()
     await fiber.dispose()
-
-    expect(await sectionFor()).toBeUndefined()
-    await preStep(ctx, afterDispose.agent)
-    expect(afterDispose.injected).toEqual([])
+    expect(await contextFor()).toBeUndefined()
   })
 })
diff --git a/packages/web/tool-web/README.i18n.yaml b/packages/web/tool-web/README.i18n.yaml
index 4a853a1fa8..590b319209 100644
--- a/packages/web/tool-web/README.i18n.yaml
+++ b/packages/web/tool-web/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/web/tool-web/README.md
-README.md: 7bee0d2d30fbbcf582fd7b60eb5d9130b6bdf888
-README.zh.md: 3d708839c9ffbdd89df08678fd6997fc6c45ee07
+README.md: 12f5c806db66b2109888c1ec642d117f3432d0df
+README.zh.md: cfbf47219f160af706912ca53f85cff535c381ec
diff --git a/packages/web/tool-web/README.md b/packages/web/tool-web/README.md
index 7bee0d2d30..12f5c806db 100644
--- a/packages/web/tool-web/README.md
+++ b/packages/web/tool-web/README.md
@@ -4,7 +4,7 @@ English | [中文](README.zh.md)
 
 The model-facing web tool suite — `web_search` and `web_fetch` — over the [web capability seam](../web/README.md) (`ctx.web`). It owns model-facing concerns only: tool names, JSON schemas, snake_case argument names, prompt sections, the result-count bound, result formatting, HTML→markdown presentation, and the UI presentation projection — `presentCall`, `presentResult` (a `card: 'web'` result card discriminated by `kind: 'search' | 'fetch'`), and the `output.presentationMeta` that carries the structured search sources or the fetch summary the lossy render text cannot (see the [web-result-card Agent Note](../../../.agents/notes/implemented/feature/2026-07-30-web-result-card.md)). All web access goes through `ctx.web`; this package never imports a concrete provider. Neither tool exposes a model-facing timeout — each tool's cooperative tool-call budget is declared here via config (`fetchTimeoutMs`/`searchTimeoutMs`, attached as `ToolDefinition.timeoutMs`) and enforced by [`@deepseek-ai/dsh-timeout-policy`](../../timeout/timeout-policy/README.md) (a `tools/execute` wrapper); each tool just forwards `exec.signal` to the seam.
 
-Each tool is registered independently; a product that wants only one disables the other via config (`{ search: false }` / `{ fetch: false }`).
+Each tool is registered independently; a product that wants only one disables the other via config (`{ search: false }` / `{ fetch: false }`). Search guidance mentions `web_fetch` only when fetch is also config-enabled; a search-only composition instead tells the model to use returned snippets and cite their URLs.
 
 ## Tools
 
@@ -47,14 +47,20 @@ The tool never calls a provider's `available()` and never enumerates providers 
 
 #### What the model sees
 
-Search and fetch contribute the web-search and web-fetch guidance below. A scoped tool restriction does not remove these independently registered sections.
+Search and fetch contribute the web-search and web-fetch guidance below. Search chooses its fetch-enabled or search-only text from config at registration time. A scoped tool restriction does not remove these independently registered sections.
 
-##### Web search guidance
+##### Web search guidance with fetch enabled
 
 ```markdown
 Use the web_search tool to discover current information on the web. It returns an optional answer plus a list of source URLs. Follow up with web_fetch when you need the full content of a specific result, and cite the relevant URLs as markdown links.
 ```
 
+##### Web search-only guidance
+
+```markdown
+Use the web_search tool to discover current information on the web. It returns an optional answer plus a list of source URLs. Use the returned source snippets when available, and cite the relevant URLs as markdown links.
+```
+
 ##### Web fetch guidance
 
 ```markdown
@@ -63,11 +69,11 @@ Use the web_fetch tool to retrieve the content of a specific HTTP(S) URL (for ex
 
 #### Token effect
 
-Fixed guidance cost per request for each config-enabled tool, even when a restriction hides its schema.
+Fixed guidance cost per request for each config-enabled tool, even when a restriction hides its schema. Toggling fetch changes the search guidance as well as registering or removing the fetch section.
 
 #### KV Cache effect
 
-Prefix-stable while enabled tools, scope, and guidance text are unchanged. Config enablement or plugin lifecycle may invalidate reuse from the first changed prompt section; scoped schema restrictions do not remove it.
+Prefix-stable while enabled tools, scope, and guidance text are unchanged. Config enablement—including toggling fetch's search-guidance branch—or plugin lifecycle may invalidate reuse from the first changed prompt section; scoped schema restrictions do not remove it.
 
 ### Tool schemas
 
diff --git a/packages/web/tool-web/README.zh.md b/packages/web/tool-web/README.zh.md
index 3d708839c9..cfbf47219f 100644
--- a/packages/web/tool-web/README.zh.md
+++ b/packages/web/tool-web/README.zh.md
@@ -4,7 +4,7 @@
 
 面向模型的 web 工具套件 `web_search` 与 `web_fetch`，构建于 [web 能力 seam](../web/README.md)（`ctx.web`）之上。它只负责面向模型的事项：工具名称、JSON Schema、snake_case 参数名称、提示词区段、结果数量上限、结果格式、HTML→markdown 呈现，以及 UI 呈现投影——`presentCall`、`presentResult`（以 `kind: 'search' | 'fetch'` 区分的 `card: 'web'` 结果卡片），以及承载有损渲染文本无法携带的结构化搜索来源或抓取摘要的 `output.presentationMeta`（见 [web-result-card Agent Note](../../../.agents/notes/implemented/feature/2026-07-30-web-result-card.md)）。所有 web 访问都通过 `ctx.web`；该包（package）绝不导入具体提供方。两个工具都不公开面向模型的超时：每个工具的协作式工具调用超时预算通过配置在此声明（`fetchTimeoutMs`／`searchTimeoutMs`，附加为 `ToolDefinition.timeoutMs`），由 [`@deepseek-ai/dsh-timeout-policy`](../../timeout/timeout-policy/README.md)（`tools/execute` 包装层）强制执行；每个工具只把 `exec.signal` 转发给 seam。
 
-每个工具独立注册；只需要其中一个工具的产品可以通过配置禁用另一个（`{ search: false }`／`{ fetch: false }`）。
+每个工具独立注册；只需要其中一个工具的产品可以通过配置禁用另一个（`{ search: false }`／`{ fetch: false }`）。仅当抓取也通过配置启用时，搜索指引才会提及 `web_fetch`；仅启用搜索的组合则会要求模型使用返回的 snippet 并引用其 URL。
 
 ## 工具
 
@@ -47,14 +47,20 @@
 
 #### 模型看到的内容
 
-搜索与抓取分别贡献以下 web-search 和 web-fetch 指引。scope 工具限制不会移除这些独立注册的区段。
+搜索与抓取分别贡献以下 web-search 和 web-fetch 指引。搜索会在注册时根据配置选用启用抓取或仅搜索的文本。scope 工具限制不会移除这些独立注册的区段。
 
-##### Web 搜索指引
+##### 启用抓取时的 Web 搜索指引
 
 ```markdown
 Use the web_search tool to discover current information on the web. It returns an optional answer plus a list of source URLs. Follow up with web_fetch when you need the full content of a specific result, and cite the relevant URLs as markdown links.
 ```
 
+##### 仅搜索时的 Web 搜索指引
+
+```markdown
+Use the web_search tool to discover current information on the web. It returns an optional answer plus a list of source URLs. Use the returned source snippets when available, and cite the relevant URLs as markdown links.
+```
+
 ##### Web 抓取指引
 
 ```markdown
@@ -63,11 +69,11 @@ Use the web_fetch tool to retrieve the content of a specific HTTP(S) URL (for ex
 
 #### Token 影响
 
-每个通过配置启用的工具都会为每次请求增加固定的指引 token 开销，即使限制隐藏了其 schema。
+每个通过配置启用的工具都会为每次请求增加固定的指引 token 开销，即使限制隐藏了其 schema。切换抓取状态不仅会注册或移除抓取区段，也会更改搜索指引。
 
 #### KV Cache 影响
 
-只要启用工具、scope 与指引文本不变，前缀就保持稳定。配置启用状态或插件生命周期可能使从第一个变化的提示词区段起的复用失效；scope schema 限制不会移除该区段。
+只要启用工具、scope 与指引文本不变，前缀就保持稳定。配置启用状态（包括因切换抓取状态而改变搜索指引分支）或插件生命周期可能使从第一个变化的提示词区段起的复用失效；scope schema 限制不会移除该区段。
 
 ### 工具 schema
 
diff --git a/packages/web/tool-web/src/index.ts b/packages/web/tool-web/src/index.ts
index 397e2bf7bb..f8f32c568a 100644
--- a/packages/web/tool-web/src/index.ts
+++ b/packages/web/tool-web/src/index.ts
@@ -84,6 +84,8 @@ export function apply(ctx: Context, config: Config): void {
   assertPositiveInteger('fetchTimeoutMs', resolved.fetchTimeoutMs)
   assertPositiveInteger('searchTimeoutMs', resolved.searchTimeoutMs)
   assertPositiveInteger('fetchMaxOutputChars', resolved.fetchMaxOutputChars)
-  if (resolved.search) applyWebSearchTool(ctx, resolved.searchMaxResults, resolved.searchTimeoutMs)
+  if (resolved.search) {
+    applyWebSearchTool(ctx, resolved.searchMaxResults, resolved.searchTimeoutMs, resolved.fetch)
+  }
   if (resolved.fetch) applyWebFetchTool(ctx, resolved.fetchTimeoutMs, resolved.fetchMaxOutputChars)
 }
diff --git a/packages/web/tool-web/src/search.ts b/packages/web/tool-web/src/search.ts
index 20979e4035..35c97dfda2 100644
--- a/packages/web/tool-web/src/search.ts
+++ b/packages/web/tool-web/src/search.ts
@@ -204,12 +204,21 @@ export function presentSearchResult(args: { query: string }, result: ToolResult)
  *   request's `maxResults`.
  * @param timeoutMs - the cooperative tool-call budget (ms) attached as the tool's
  *   `ToolDefinition.timeoutMs` for `@deepseek-ai/dsh-timeout-policy` to enforce.
+ * @param fetchEnabled - whether the same composition exposes `web_fetch`, which
+ *   controls whether search guidance may recommend that follow-up tool.
  */
-export function applyWebSearchTool(ctx: Context, maxResults: number, timeoutMs: number): void {
+export function applyWebSearchTool(
+  ctx: Context,
+  maxResults: number,
+  timeoutMs: number,
+  fetchEnabled: boolean,
+): void {
   ctx.systemPrompt.section({
     name: 'tool:web_search',
     order: 110,
-    text: 'Use the web_search tool to discover current information on the web. It returns an optional answer plus a list of source URLs. Follow up with web_fetch when you need the full content of a specific result, and cite the relevant URLs as markdown links.',
+    text: fetchEnabled
+      ? 'Use the web_search tool to discover current information on the web. It returns an optional answer plus a list of source URLs. Follow up with web_fetch when you need the full content of a specific result, and cite the relevant URLs as markdown links.'
+      : 'Use the web_search tool to discover current information on the web. It returns an optional answer plus a list of source URLs. Use the returned source snippets when available, and cite the relevant URLs as markdown links.',
   })
 
   ctx.tools.register(defineTool({
diff --git a/packages/web/tool-web/tests/tool-web.spec.ts b/packages/web/tool-web/tests/tool-web.spec.ts
index fa07c4ba56..de9bf79284 100644
--- a/packages/web/tool-web/tests/tool-web.spec.ts
+++ b/packages/web/tool-web/tests/tool-web.spec.ts
@@ -483,8 +483,17 @@ describe('tool-web registration', () => {
     const { fiber, ctx } = await mountTools()
     const prompt = await ctx.systemPrompt.assemble()
     const text = prompt.sections.map(s => s.text).join('\n')
-    expect(text).toContain('web_search')
-    expect(text).toContain('web_fetch')
+    expect(text).toContain('Use the web_search tool to discover current information on the web. It returns an optional answer plus a list of source URLs. Follow up with web_fetch when you need the full content of a specific result, and cite the relevant URLs as markdown links.')
+    expect(text).toContain('Use the web_fetch tool to retrieve the content of a specific HTTP(S) URL')
+    await fiber.dispose()
+  })
+
+  it('does not advertise web_fetch in search-only prompt guidance', async () => {
+    const { fiber, ctx } = await mountTools({ config: { search: true, fetch: false } })
+    const prompt = await ctx.systemPrompt.assemble()
+    const text = prompt.sections.map(s => s.text).join('\n')
+    expect(text).toContain('Use the returned source snippets when available')
+    expect(text).not.toContain('web_fetch')
     await fiber.dispose()
   })
 })
diff --git a/packages/web/web-search-deepseek/README.i18n.yaml b/packages/web/web-search-deepseek/README.i18n.yaml
index 83129cba21..edc7b5d18b 100644
--- a/packages/web/web-search-deepseek/README.i18n.yaml
+++ b/packages/web/web-search-deepseek/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/web/web-search-deepseek/README.md
-README.md: 54eb7561b9d81a9e2da565e3870abe094dbe984d
-README.zh.md: 8862b8a9c1ba69d247942bb6e41289214826c682
+README.md: 9046934de209ed0787efa50332e5be16bfdf55c6
+README.zh.md: 94e01daba69cecd2f5c3c6680979ee5fd66d7cdd
diff --git a/packages/web/web-search-deepseek/README.md b/packages/web/web-search-deepseek/README.md
index 54eb7561b9..9046934de2 100644
--- a/packages/web/web-search-deepseek/README.md
+++ b/packages/web/web-search-deepseek/README.md
@@ -4,7 +4,7 @@ English | [中文](README.zh.md)
 
 A [DeepSeek](https://deepseek.com)-backed `WebSearchProvider` for the harness [web capability seam](../web/README.md) (`ctx.web`). It calls DeepSeek's **Anthropic-compatible Messages API** (`POST {baseURL}/messages`) with the native `web_search_20250305` server tool enabled, and maps the structured `web_search_tool_result` blocks DeepSeek returns into the seam's normalized `WebSearchResult`.
 
-This is an **implementation** package: it registers a provider into `ctx.web`, it does not own the key and it does not register a model-facing tool. Like `@deepseek-ai/dsh-llm-deepseek`, it is a function/namespace plugin (`inject: ['web']`). The Anthropic wire shape is a provider-private detail — it does **not** make this provider depend on `ctx.llm`.
+This is an **implementation** package: it registers a provider into `ctx.web`, resolves its credential for each search through the optional `ctx.credentials` seam, records the auxiliary request in the initiating Agent session when one exists, and does not register a model-facing tool. Like `@deepseek-ai/dsh-llm-deepseek`, it is a function/namespace plugin (`inject: ['web']`). The Anthropic wire shape is a provider-private detail — it does **not** make this provider depend on `ctx.llm`.
 
 ## How it differs from a dedicated search endpoint
 
@@ -12,13 +12,14 @@ Exa and Perplexity expose dedicated search endpoints; DeepSeek does not. Instead
 
 **Strict mode**: if the response carries no `web_search_tool_result` block (native search did not trigger), the provider throws `WebError` `WEB_PROVIDER_ERROR` rather than degrading to prose-scraping — honest and debuggable.
 
-It reuses `$DEEPSEEK_API_KEY` (no new secret) but **not** `$DEEPSEEK_BASE_URL`: the search endpoint is the Anthropic-compatible base (`https://api.deepseek.com/anthropic/v1`), distinct from the chat-completions base (`https://api.deepseek.com`) the LLM adapter uses.
+It reuses the `DEEPSEEK_API_KEY` credential reference (no new secret) but **not** `$DEEPSEEK_BASE_URL`: the search endpoint is the Anthropic-compatible base (`https://api.deepseek.com/anthropic/v1`), distinct from the chat-completions base (`https://api.deepseek.com`) the LLM adapter uses. A mounted credentials service is authoritative; without one, the provider falls back to the launching process environment. The reference is resolved for each search, so a key stored or rotated by the Web Models page reaches the next call without a restart.
 
 ## Config
 
 | Key | Default | Meaning |
 |---|---|---|
-| `apiKey` | `$DEEPSEEK_API_KEY` | DeepSeek API key. Empty/absent makes the provider unavailable. Sent as both `x-api-key` and `Authorization: Bearer` (official vs Anthropic-compatible proxy). |
+| `apiKey` | omitted | Literal DeepSeek API key. Prefer `apiKeyEnv` so no secret enters configuration; a non-empty literal wins. |
+| `apiKeyEnv` | `DEEPSEEK_API_KEY` | Credential reference resolved for each search through `ctx.credentials`, or from the process environment when that seam is absent. A missing value fails the call as `WEB_PROVIDER_CREDENTIAL_MISSING`. |
 | `baseURL` | `https://api.deepseek.com/anthropic/v1` | Anthropic-compatible endpoint base; `/messages` is appended. Use a separate env var such as `$DEEPSEEK_SEARCH_BASE_URL` when overriding it; do not reuse `$DEEPSEEK_BASE_URL`, which belongs to the chat-completions LLM adapter. An unparseable value makes the provider unavailable. |
 | `model` | `deepseek-v4-flash` | Anthropic-format model name. |
 | `apiVersion` | `2023-06-01` | `anthropic-version` header value. |
@@ -29,7 +30,7 @@ It reuses `$DEEPSEEK_API_KEY` (no new secret) but **not** `$DEEPSEEK_BASE_URL`:
 - id: web-search-deepseek
   name: '@deepseek-ai/dsh-web-search-deepseek'
   config:
-    apiKey: !!js process.env.DEEPSEEK_API_KEY
+    apiKeyEnv: DEEPSEEK_API_KEY
     baseURL: !!js process.env.DEEPSEEK_SEARCH_BASE_URL
 ```
 
@@ -41,6 +42,10 @@ Results are deduplicated by URL because one request may surface the same page ac
 
 Provider failures become `WEB_PROVIDER_ERROR`; caller cancellation becomes `WEB_ABORTED`. HTTP redirects are rejected before the `Location` target is contacted and surface as `WEB_PROVIDER_ERROR`.
 
+## Request logging
+
+Immediately before dispatch, a search running under an initiating Agent appends the log-only `web/deepseek-search-llm-request` session event. It contains the resolved endpoint, API version, and exact secret-free JSON body sent to DeepSeek; headers and credentials are excluded. Credential failures and cancellations before dispatch create no event, while later HTTP or response failures leave the attempted request durable. Direct programmatic provider calls outside an Agent have no initiating session to log.
+
 ## Model Experience
 
 ### Auxiliary DeepSeek search request
@@ -61,7 +66,7 @@ Independent of the conversation request cache. The auxiliary instruction and nat
 
 #### What the model sees
 
-Through [`dsh-tool-web`](../tool-web/README.md), the conversation model sees deduplicated URLs, titles, dates, and citation snippets from structured search blocks; provider prose is not trusted as an answer. This provider's exact failures are `DeepSeek search aborted`, `DeepSeek search request failed: `, `DeepSeek returned no web_search_tool_result blocks; the request may not have triggered native web search`, and `DeepSeek returned an unprocessable response body: `; HTTP failures preserve the provider message. The consumer owns the error wrapper.
+Through [`dsh-tool-web`](../tool-web/README.md), the conversation model sees deduplicated URLs, titles, dates, and citation snippets from structured search blocks; provider prose is not trusted as an answer. This provider's exact failures include the actionable missing-credential message, `DeepSeek search credential resolution failed: `, `DeepSeek search aborted`, `DeepSeek search request failed: `, `DeepSeek returned no web_search_tool_result blocks; the request may not have triggered native web search`, and `DeepSeek returned an unprocessable response body: `; HTTP failures preserve the provider message. The consumer owns the error wrapper.
 
 #### Token effect
 
@@ -74,6 +79,6 @@ Append-only; newly visible content follows the reusable request prefix and does
 ## Known Limitations and Deferred Work
 
 - **One search costs a full Messages model turn** — latency plus generated tokens, with up to `maxUses` server-side searches; DeepSeek exposes no dedicated retrieval endpoint.
+- **Dynamic credential availability resolves inside the operation** — the synchronous `available()` contract can establish that a resolver exists but cannot query an asynchronous credential store. A selected keyless provider therefore fails the search with `WEB_PROVIDER_CREDENTIAL_MISSING`; the stable `web_search` schema remains registered. Caller cancellation races this preflight locally, but cannot force an arbitrary credential backend itself to stop work.
 - **Over-returned sources still cost tokens** — with no result-count knob on the wire, `maxResults` is enforced only post-hoc by seam truncation.
 - **Uncited results carry no `snippet`** — a source gains one only when a `text` block citation (`cited_text`) matches its URL.
-- **Abort classification is error-shape-based** — only a `DOMException` named `AbortError` maps to `WEB_ABORTED`; an abort carrying a custom reason (e.g. `dsh-timeout`'s `TimeoutReason`) surfaces as `WEB_PROVIDER_ERROR`.
diff --git a/packages/web/web-search-deepseek/README.zh.md b/packages/web/web-search-deepseek/README.zh.md
index 8862b8a9c1..94e01daba6 100644
--- a/packages/web/web-search-deepseek/README.zh.md
+++ b/packages/web/web-search-deepseek/README.zh.md
@@ -4,7 +4,7 @@
 
 由 [DeepSeek](https://deepseek.com) 支持的 `WebSearchProvider`，用于 harness [web 能力 seam](../web/README.md)（`ctx.web`）。它调用 DeepSeek 的 **Anthropic 兼容 Messages API**（`POST {baseURL}/messages`），启用原生 `web_search_20250305` 服务器工具，并把 DeepSeek 返回的结构化 `web_search_tool_result` 块映射为 seam 规范化的 `WebSearchResult`。
 
-这是一个**实现**包（package）：它向 `ctx.web` 注册提供方，不拥有该键，也不注册面向模型的工具。与 `@deepseek-ai/dsh-llm-deepseek` 一样，它是函数／命名空间插件（`inject: ['web']`）。Anthropic 协议格式（wire format）是提供方私有细节，并**不**使该提供方依赖 `ctx.llm`。
+这是一个**实现**包（package）：它向 `ctx.web` 注册提供方，通过可选的 `ctx.credentials` seam 为每次搜索解析凭据，若存在发起请求的 agent（智能体）会话，还会在其中记录该辅助请求，且不注册面向模型的工具。与 `@deepseek-ai/dsh-llm-deepseek` 一样，它是函数／命名空间插件（`inject: ['web']`）。Anthropic 协议格式（wire format）是提供方私有细节，并**不**使该提供方依赖 `ctx.llm`。
 
 ## 与专用搜索端点的区别
 
@@ -12,13 +12,14 @@ Exa 和 Perplexity 提供专用搜索端点，DeepSeek 则没有。该提供方
 
 **严格模式**：如果响应不含 `web_search_tool_result` 块（未触发原生搜索），提供方会抛出 `WebError` `WEB_PROVIDER_ERROR`，而非降级为文本抓取；这种行为诚实且可诊断。
 
-它复用 `$DEEPSEEK_API_KEY`（不增加密钥），但**不会**复用 `$DEEPSEEK_BASE_URL`：搜索端点使用 Anthropic 兼容基址（`https://api.deepseek.com/anthropic/v1`），不同于大语言模型（LLM）适配器使用的 chat-completions 基址（`https://api.deepseek.com`）。
+它复用 `DEEPSEEK_API_KEY` 凭据引用（不增加密钥），但**不会**复用 `$DEEPSEEK_BASE_URL`：搜索端点使用 Anthropic 兼容基址（`https://api.deepseek.com/anthropic/v1`），不同于大语言模型（LLM）适配器使用的 chat-completions 基址（`https://api.deepseek.com`）。已挂载的凭据服务具有权威性；没有该服务时，提供方会回退到启动进程的环境变量。每次搜索都会解析该引用，因此在 Web 的 Models 页中存储或轮换的密钥无需重启，即可用于下一次调用。
 
 ## 配置
 
 | 配置键 | 默认值 | 含义 |
 |---|---|---|
-| `apiKey` | `$DEEPSEEK_API_KEY` | DeepSeek API 密钥。为空或缺失时提供方不可用。同时通过 `x-api-key` 和 `Authorization: Bearer` 发送（分别用于官方接口与 Anthropic 兼容代理）。 |
+| `apiKey` | 未设置 | DeepSeek API 密钥字面值。优先使用 `apiKeyEnv`，避免密钥进入配置；非空字面值优先。 |
+| `apiKeyEnv` | `DEEPSEEK_API_KEY` | 每次搜索都会通过 `ctx.credentials` 解析该凭据引用；没有该 seam 时则从进程环境解析。值缺失时，调用以 `WEB_PROVIDER_CREDENTIAL_MISSING` 失败。 |
 | `baseURL` | `https://api.deepseek.com/anthropic/v1` | Anthropic 兼容端点基址；追加 `/messages`。覆盖时使用 `$DEEPSEEK_SEARCH_BASE_URL` 等独立环境变量；禁止复用属于 chat-completions LLM 适配器的 `$DEEPSEEK_BASE_URL`。无法解析时提供方不可用。 |
 | `model` | `deepseek-v4-flash` | Anthropic 格式模型名称。 |
 | `apiVersion` | `2023-06-01` | `anthropic-version` 标头值。 |
@@ -29,7 +30,7 @@ Exa 和 Perplexity 提供专用搜索端点，DeepSeek 则没有。该提供方
 - id: web-search-deepseek
   name: '@deepseek-ai/dsh-web-search-deepseek'
   config:
-    apiKey: !!js process.env.DEEPSEEK_API_KEY
+    apiKeyEnv: DEEPSEEK_API_KEY
     baseURL: !!js process.env.DEEPSEEK_SEARCH_BASE_URL
 ```
 
@@ -41,6 +42,10 @@ DeepSeek 不返回该提供方可作为 `content` 信任的提供方生成答案
 
 提供方失败变为 `WEB_PROVIDER_ERROR`；调用方取消变为 `WEB_ABORTED`。HTTP 重定向会在接触 `Location` 目标前被拒绝，并以 `WEB_PROVIDER_ERROR` 呈现。
 
+## 请求日志
+
+由 agent 发起的搜索会在发出请求前一刻，向相应会话追加仅用于日志的 `web/deepseek-search-llm-request` 会话事件。其中包含已解析端点、API 版本，以及发送给 DeepSeek 且不含密钥的精确 JSON 请求体；不包含标头和凭据。发出请求前发生凭据处理失败或取消时不会创建事件；发出请求后才发生 HTTP 或响应失败时，本次请求尝试仍保留持久记录。在 agent 之外通过程序直接调用提供方时，没有发起会话可供记录。
+
 ## 模型体验
 
 ### 辅助 DeepSeek 搜索请求
@@ -61,7 +66,7 @@ DeepSeek 不返回该提供方可作为 `content` 信任的提供方生成答案
 
 #### 模型看到的内容
 
-通过 [`dsh-tool-web`](../tool-web/README.md)，会话模型会看到结构化搜索块中去重后的 URL、标题、日期与引用 snippet；提供方文本不会作为答案受到信任。该提供方的具体错误消息为 `DeepSeek search aborted`、`DeepSeek search request failed: `、`DeepSeek returned no web_search_tool_result blocks; the request may not have triggered native web search` 和 `DeepSeek returned an unprocessable response body: `；HTTP 失败保留提供方消息。错误包装属于消费方。
+通过 [`dsh-tool-web`](../tool-web/README.md)，会话模型会看到结构化搜索块中去重后的 URL、标题、日期与引用 snippet；提供方文本不会作为答案受到信任。该提供方的具体错误消息包括带有处理指引的凭据缺失消息、`DeepSeek search credential resolution failed: `、`DeepSeek search aborted`、`DeepSeek search request failed: `、`DeepSeek returned no web_search_tool_result blocks; the request may not have triggered native web search` 和 `DeepSeek returned an unprocessable response body: `；HTTP 失败保留提供方消息。错误包装属于消费方。
 
 #### Token 影响
 
@@ -74,6 +79,6 @@ DeepSeek 不返回该提供方可作为 `content` 信任的提供方生成答案
 ## 已知限制与暂缓事项
 
 - **一次搜索需要完整的 Messages 模型轮次**：会产生延迟与生成 token，并且最多执行 `maxUses` 次服务器侧搜索；DeepSeek 不公开专用检索端点。
+- **动态凭据的可用性在操作内部解析**：同步的 `available()` 契约可以确认解析器存在，但无法查询异步凭据存储。因此，选中的无密钥提供方会使搜索以 `WEB_PROVIDER_CREDENTIAL_MISSING` 失败；稳定的 `web_search` schema 仍保持注册。调用方取消在本地与该预检存在竞态，但无法强制任意凭据后端自行停止工作。
 - **超量返回的源仍消耗 token**：协议没有结果数量旋钮，`maxResults` 只能由 seam 在事后截断。
 - **未引用的结果没有 `snippet`**：只有 `text` 块中的引用（`cited_text`）匹配其 URL 时，源才会获得 snippet。
-- **中止分类基于错误结构**：只有 `DOMException` 且名为 `AbortError` 时才映射为 `WEB_ABORTED`；携带自定义原因的中止（例如 `dsh-timeout` 的 `TimeoutReason`）会呈现为 `WEB_PROVIDER_ERROR`。
diff --git a/packages/web/web-search-deepseek/package.json b/packages/web/web-search-deepseek/package.json
index b38f552957..e1dbf720f6 100644
--- a/packages/web/web-search-deepseek/package.json
+++ b/packages/web/web-search-deepseek/package.json
@@ -27,7 +27,10 @@
   ],
   "license": "BSD-3-Clause",
   "peerDependencies": {
+    "@deepseek-ai/dsh-agent": "^0.0.1",
+    "@deepseek-ai/dsh-credentials": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
+    "@deepseek-ai/dsh-session": "^0.0.1",
     "@deepseek-ai/dsh-web": "^0.0.1",
     "cordis": "^4.0.0-rc.7"
   },
@@ -35,7 +38,11 @@
     "schemastery": "^3.18.0"
   },
   "devDependencies": {
+    "@deepseek-ai/dsh-agent": "workspace:^",
+    "@deepseek-ai/dsh-credentials": "workspace:^",
+    "@deepseek-ai/dsh-credentials-local": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/dsh-session": "workspace:^",
     "@deepseek-ai/dsh-web": "workspace:^",
     "cordis": "^4.0.0-rc.7"
   }
diff --git a/packages/web/web-search-deepseek/src/index.ts b/packages/web/web-search-deepseek/src/index.ts
index a24bb3f95f..8569f0e944 100644
--- a/packages/web/web-search-deepseek/src/index.ts
+++ b/packages/web/web-search-deepseek/src/index.ts
@@ -7,6 +7,9 @@
 
 import type { Context } from 'cordis'
 import z from 'schemastery'
+import type {} from '@deepseek-ai/dsh-agent'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import type {} from '@deepseek-ai/dsh-session'
 import type {} from '@deepseek-ai/dsh-web'
 import {
   DeepSeekSearchProvider,
@@ -26,7 +29,7 @@ export {
   DEEPSEEK_DEFAULT_MODEL,
   DEEPSEEK_PROVIDER_ID,
 } from './provider.ts'
-export type { DeepSeekSearchProviderOptions } from './provider.ts'
+export type { DeepSeekSearchLlmRequest, DeepSeekSearchProviderOptions } from './provider.ts'
 
 /** Cordis plugin name used by loader diagnostics. */
 export const name = 'web-search-deepseek'
@@ -34,10 +37,14 @@ export const name = 'web-search-deepseek'
 /** The web seam this provider registers into. */
 export const inject = ['web']
 
+const DEFAULT_API_KEY_ENV = 'DEEPSEEK_API_KEY'
+
 /** Plugin config (all optional — `apply` fills env-var and constant defaults). */
 export interface Config {
-  /** DeepSeek API key. Falls back to `$DEEPSEEK_API_KEY`. Empty → unavailable. */
+  /** Literal DeepSeek API key; prefer {@link apiKeyEnv} so no secret enters configuration files. */
   apiKey?: string
+  /** Credential reference resolved for each search; defaults to `DEEPSEEK_API_KEY`. */
+  apiKeyEnv?: string
   /** Anthropic-compatible endpoint base; `/messages` is appended. */
   baseURL?: string
   /** Anthropic-format model name. Defaults to `deepseek-v4-flash`. */
@@ -51,7 +58,8 @@ export interface Config {
 }
 
 export const Config: z = z.object({
-  apiKey: z.string(),
+  apiKey: z.string().role('secret'),
+  apiKeyEnv: z.string().role('credential-ref').default(DEFAULT_API_KEY_ENV),
   baseURL: z.string(),
   model: z.string(),
   apiVersion: z.string(),
@@ -63,12 +71,29 @@ export const Config: z = z.object({
 export function apply(ctx: Context, config: Config): void {
   const maxTokens = config.maxTokens ?? DEEPSEEK_DEFAULT_MAX_TOKENS
   const maxUses = config.maxUses ?? DEEPSEEK_DEFAULT_MAX_USES
+  const apiKeyEnv = credentialRef(config.apiKeyEnv ?? DEFAULT_API_KEY_ENV)
+  const literalApiKey = config.apiKey !== undefined && config.apiKey.length > 0
+    ? config.apiKey
+    : undefined
   ctx.web.registerSearchProvider(new DeepSeekSearchProvider({
-    apiKey: config.apiKey ?? process.env.DEEPSEEK_API_KEY ?? '',
+    ...literalApiKey === undefined ? {} : { apiKey: literalApiKey },
+    resolveApiKey: async () => {
+      const credentials = ctx.get('credentials')
+      if (credentials !== undefined) return (await credentials.resolve(apiKeyEnv))?.value
+      const ambient = process.env[apiKeyEnv]
+      return ambient !== undefined && ambient.length > 0 ? ambient : undefined
+    },
+    apiKeyEnv,
     baseURL: config.baseURL ?? DEEPSEEK_DEFAULT_BASE_URL,
     model: config.model ?? DEEPSEEK_DEFAULT_MODEL,
     apiVersion: config.apiVersion ?? DEEPSEEK_DEFAULT_API_VERSION,
     maxTokens,
     maxUses,
+    recordRequest: (request) => {
+      ctx.get('agents')?.currentInitiator()?.session.append(
+        'web/deepseek-search-llm-request',
+        request,
+      )
+    },
   }))
 }
diff --git a/packages/web/web-search-deepseek/src/invariant.ts b/packages/web/web-search-deepseek/src/invariant.ts
index 8b79315f7d..d1f707f2bc 100644
--- a/packages/web/web-search-deepseek/src/invariant.ts
+++ b/packages/web/web-search-deepseek/src/invariant.ts
@@ -15,8 +15,9 @@ export const name = 'web-search-deepseek-invariant'
 export const inject = ['invariants']
 
 /**
- * No runtime invariant: this package exposes no independent event sequence or mutable data relation
- * beyond contracts enforced at its owning seam.
+ * No runtime invariant: the package emits a pre-dispatch log event but owns no
+ * later authoritative dispatch event to relate it to. Exact envelope equality
+ * is pinned at the provider boundary instead.
  */
 const install: InvariantInstaller = () => {}
 
diff --git a/packages/web/web-search-deepseek/src/provider.ts b/packages/web/web-search-deepseek/src/provider.ts
index 871c911deb..aef898ed60 100644
--- a/packages/web/web-search-deepseek/src/provider.ts
+++ b/packages/web/web-search-deepseek/src/provider.ts
@@ -13,6 +13,8 @@ import type {
   WebSearchResult,
   WebSearchSource,
 } from '@deepseek-ai/dsh-web'
+import type { CredentialRef } from '@deepseek-ai/dsh-credentials'
+import type {} from '@deepseek-ai/dsh-session'
 import type {
   AnthropicError,
   AnthropicResponse,
@@ -47,10 +49,49 @@ export const DEEPSEEK_DEFAULT_MAX_USES = 5
 /** Attribution header sent on every request. Bump with the package version. */
 const USER_AGENT = 'deepseek-harness/0.0.1'
 
-/** Resolved provider options (the plugin's `apply` supplies env-var and constant defaults). */
+/**
+ * Exact secret-free DeepSeek Messages request recorded immediately before one
+ * auxiliary search dispatch.
+ */
+export interface DeepSeekSearchLlmRequest {
+  /** Fully resolved Messages endpoint. */
+  readonly endpoint: string
+  /** `anthropic-version` header value. */
+  readonly apiVersion: string
+  /** Exact JSON body sent to the provider. */
+  readonly body: {
+    readonly model: string
+    readonly max_tokens: number
+    readonly messages: readonly [{
+      readonly role: 'user'
+      readonly content: readonly [{
+        readonly type: 'text'
+        readonly text: string
+      }]
+    }]
+    readonly tools: readonly [{
+      readonly type: 'web_search_20250305'
+      readonly name: 'web_search'
+      readonly max_uses: number
+    }]
+  }
+}
+
+declare module '@deepseek-ai/dsh-session' {
+  interface SessionEventMap {
+    /** Secret-free auxiliary DeepSeek search request recorded before dispatch. */
+    'web/deepseek-search-llm-request': DeepSeekSearchLlmRequest
+  }
+}
+
+/** Resolved provider options (the plugin's `apply` supplies credential and constant defaults). */
 export interface DeepSeekSearchProviderOptions {
-  /** DeepSeek API key. Empty/absent makes the provider unavailable. */
-  apiKey: string
+  /** Literal DeepSeek API key; when present it wins over {@link resolveApiKey}. */
+  apiKey?: string
+  /** Resolve the current DeepSeek API key for one search operation. */
+  resolveApiKey?: () => Promise
+  /** Credential reference named by missing-credential diagnostics. */
+  apiKeyEnv?: CredentialRef
   /** Endpoint base; `/messages` is appended. */
   baseURL: string
   /** Anthropic-format model name. */
@@ -61,6 +102,11 @@ export interface DeepSeekSearchProviderOptions {
   maxTokens: number
   /** Maximum `web_search` server-tool uses per request. */
   maxUses: number
+  /**
+   * Record the exact secret-free request immediately before dispatch. A throw
+   * prevents dispatch so model-visible auxiliary input cannot escape logging.
+   */
+  recordRequest?: (request: DeepSeekSearchLlmRequest) => void
 }
 
 /**
@@ -134,41 +180,51 @@ export class DeepSeekSearchProvider implements WebSearchProvider {
   constructor(private readonly options: DeepSeekSearchProviderOptions) {}
 
   available(): boolean {
-    return this.options.apiKey.length > 0
+    return ((this.options.apiKey?.length ?? 0) > 0 || this.options.resolveApiKey !== undefined)
       && URL.canParse(this.options.baseURL)
       && isPositiveInteger(this.options.maxTokens)
       && isPositiveInteger(this.options.maxUses)
   }
 
   async search(request: WebSearchRequest, signal?: AbortSignal): Promise {
+    const apiKey = await this.apiKey(signal)
+    throwIfSearchAborted(signal)
+    const endpoint = `${this.options.baseURL}/messages`
+    const body: DeepSeekSearchLlmRequest['body'] = {
+      model: this.options.model,
+      max_tokens: this.options.maxTokens,
+      messages: [{
+        role: 'user',
+        content: [{ type: 'text', text: `Perform a web search for the query: ${request.query}` }],
+      }],
+      tools: [{ type: 'web_search_20250305', name: 'web_search', max_uses: this.options.maxUses }],
+    }
+    this.options.recordRequest?.({
+      endpoint,
+      apiVersion: this.options.apiVersion,
+      body,
+    })
+    throwIfSearchAborted(signal)
     let response: Response
     try {
-      response = await fetch(`${this.options.baseURL}/messages`, {
+      response = await fetch(endpoint, {
         method: 'POST',
         redirect: 'error',
         headers: {
           // Official DeepSeek expects `x-api-key`; an Anthropic-compatible proxy
           // may expect `Authorization: Bearer` — send both so either resolves.
-          'x-api-key': this.options.apiKey,
-          'authorization': `Bearer ${this.options.apiKey}`,
+          'x-api-key': apiKey,
+          'authorization': `Bearer ${apiKey}`,
           'anthropic-version': this.options.apiVersion,
           'content-type': 'application/json',
           'accept': 'application/json',
           'user-agent': USER_AGENT,
         },
-        body: JSON.stringify({
-          model: this.options.model,
-          max_tokens: this.options.maxTokens,
-          messages: [{
-            role: 'user',
-            content: [{ type: 'text', text: `Perform a web search for the query: ${request.query}` }],
-          }],
-          tools: [{ type: 'web_search_20250305', name: 'web_search', max_uses: this.options.maxUses }],
-        }),
+        body: JSON.stringify(body),
         ...signal !== undefined ? { signal } : {},
       })
     } catch (error: unknown) {
-      if (isAbortError(error)) throw new WebError('DeepSeek search aborted', 'WEB_ABORTED', { cause: error })
+      if (signal?.aborted === true || isAbortError(error)) throw searchAborted(signal, error)
       throw new WebError(`DeepSeek search request failed: ${String(error)}`, 'WEB_PROVIDER_ERROR', { cause: error })
     }
 
@@ -183,7 +239,7 @@ export class DeepSeekSearchProvider implements WebSearchProvider {
         // An abort fired mid-body must surface as WEB_ABORTED, not be swallowed
         // into a generic HTTP-error message — cancellation is not a provider
         // error (the seam's cancellation contract).
-        if (isAbortError(error)) throw new WebError('DeepSeek search aborted', 'WEB_ABORTED', { cause: error })
+        if (signal?.aborted === true || isAbortError(error)) throw searchAborted(signal, error)
         // Otherwise: the HTTP status is already captured in `message` above; a
         // malformed/non-JSON error body (normal for gateway 5xx/429s) can only
         // cost a richer provider message, never the real error.
@@ -195,11 +251,72 @@ export class DeepSeekSearchProvider implements WebSearchProvider {
       const payload = await response.json() as AnthropicResponse
       return mapAnthropicResponse(payload)
     } catch (error: unknown) {
-      if (isAbortError(error)) throw new WebError('DeepSeek search aborted', 'WEB_ABORTED', { cause: error })
+      if (signal?.aborted === true || isAbortError(error)) throw searchAborted(signal, error)
       if (error instanceof WebError) throw error
       throw new WebError(`DeepSeek returned an unprocessable response body: ${String(error)}`, 'WEB_PROVIDER_ERROR', { cause: error })
     }
   }
+
+  /** Resolve one operation's credential without retaining it on the provider. */
+  private async apiKey(signal?: AbortSignal): Promise {
+    throwIfSearchAborted(signal)
+    if (this.options.apiKey !== undefined && this.options.apiKey.length > 0) return this.options.apiKey
+    let resolved: string | undefined
+    try {
+      resolved = await abortable(this.options.resolveApiKey?.() ?? Promise.resolve(undefined), signal)
+    } catch (error: unknown) {
+      if (signal?.aborted === true || isAbortError(error)) throw searchAborted(signal, error)
+      throw new WebError(
+        `DeepSeek search credential resolution failed: ${String(error)}`,
+        'WEB_PROVIDER_ERROR',
+        { cause: error },
+      )
+    }
+    if (resolved !== undefined && resolved.length > 0) return resolved
+    const ref = this.options.apiKeyEnv ?? 'DEEPSEEK_API_KEY'
+    throw new WebError(
+      `DeepSeek search has no API key for "${ref}"; store it through the credentials service`
+      + ' (the web Models page writes it), export it in the launching environment, or set a literal'
+      + ' "apiKey" in the web-search-deepseek config',
+      'WEB_PROVIDER_CREDENTIAL_MISSING',
+    )
+  }
+}
+
+/**
+ * Race a same-process asynchronous preflight against caller cancellation. The
+ * attached settlement handlers keep observing an uncooperative operation after
+ * abort so a later rejection cannot become unhandled.
+ */
+function abortable(operation: Promise, signal?: AbortSignal): Promise {
+  if (signal === undefined) return operation
+  if (signal.aborted) return Promise.reject(searchAborted(signal))
+  return new Promise((resolve, reject) => {
+    const onAbort = (): void => { reject(searchAborted(signal)) }
+    signal.addEventListener('abort', onAbort, { once: true })
+    void operation.then(
+      (value) => {
+        signal.removeEventListener('abort', onAbort)
+        resolve(value)
+      },
+      (error: unknown) => {
+        signal.removeEventListener('abort', onAbort)
+        reject(new Error(String(error).replace(/^Error: /u, ''), { cause: error }))
+      },
+    )
+  })
+}
+
+/** Throw the provider's stable cancellation error when the caller already aborted. */
+function throwIfSearchAborted(signal?: AbortSignal): void {
+  if (signal?.aborted === true) throw searchAborted(signal)
+}
+
+/** Build the provider's stable cancellation error while retaining the caller's reason. */
+function searchAborted(signal?: AbortSignal, fallback?: unknown): WebError {
+  return new WebError('DeepSeek search aborted', 'WEB_ABORTED', {
+    cause: signal?.aborted === true ? signal.reason : fallback,
+  })
 }
 
 /** True for a fetch/`AbortSignal` abort, surfaced as `WEB_ABORTED`. */
diff --git a/packages/web/web-search-deepseek/tests/deepseek.spec.ts b/packages/web/web-search-deepseek/tests/deepseek.spec.ts
index 5a9972cfd6..7990a96a9b 100644
--- a/packages/web/web-search-deepseek/tests/deepseek.spec.ts
+++ b/packages/web/web-search-deepseek/tests/deepseek.spec.ts
@@ -1,6 +1,11 @@
 import { afterEach, describe, expect, it, vi } from 'vitest'
+import { mkdtemp, rm } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
 import { Context } from 'cordis'
 import Loader from '@cordisjs/plugin-loader'
+import { credentialRef } from '@deepseek-ai/dsh-credentials'
+import CredentialsLocal from '@deepseek-ai/dsh-credentials-local'
 import WebService from '@deepseek-ai/dsh-web'
 import {
   DeepSeekSearchProvider,
@@ -156,10 +161,11 @@ describe('DeepSeekSearchProvider availability', () => {
 })
 
 describe('DeepSeekSearchProvider request mapping', () => {
-  it('posts an Anthropic Messages request enabling the web_search server tool', async () => {
+  it('records and posts the same Anthropic Messages request with the web_search server tool', async () => {
     const fetchMock = vi.fn(async () => jsonResponse(searchResponse()))
+    const recordRequest = vi.fn()
     vi.stubGlobal('fetch', fetchMock)
-    await new DeepSeekSearchProvider(options).search({ query: 'hello' })
+    await new DeepSeekSearchProvider({ ...options, recordRequest }).search({ query: 'hello' })
     const [url, init] = fetchMock.mock.calls[0] as unknown as [string, RequestInit]
     expect(url).toBe('https://api.deepseek.test/anthropic/v1/messages')
     expect(init).toMatchObject({ method: 'POST', redirect: 'error' })
@@ -167,12 +173,20 @@ describe('DeepSeekSearchProvider request mapping', () => {
     expect(headers['x-api-key']).toBe('ds-key')
     expect(headers['authorization']).toBe('Bearer ds-key')
     expect(headers['anthropic-version']).toBe('2023-06-01')
-    expect(JSON.parse(init.body as string)).toEqual({
+    const body = {
       model: 'deepseek-chat',
       max_tokens: 4096,
       messages: [{ role: 'user', content: [{ type: 'text', text: 'Perform a web search for the query: hello' }] }],
       tools: [{ type: 'web_search_20250305', name: 'web_search', max_uses: 5 }],
+    }
+    expect(JSON.parse(init.body as string)).toEqual(body)
+    expect(recordRequest).toHaveBeenCalledOnce()
+    expect(recordRequest).toHaveBeenCalledWith({
+      endpoint: url,
+      apiVersion: '2023-06-01',
+      body,
     })
+    expect(recordRequest.mock.invocationCallOrder[0]).toBeLessThan(fetchMock.mock.invocationCallOrder[0] ?? 0)
   })
 
   it('forwards the abort signal', async () => {
@@ -186,6 +200,91 @@ describe('DeepSeekSearchProvider request mapping', () => {
 })
 
 describe('DeepSeekSearchProvider error handling', () => {
+  it('does not start credential resolution or dispatch for a pre-aborted call', async () => {
+    const resolveApiKey = vi.fn(async () => 'late-key')
+    const recordRequest = vi.fn()
+    const fetchMock = vi.fn()
+    vi.stubGlobal('fetch', fetchMock)
+    const controller = new AbortController()
+    controller.abort(new Error('caller stopped'))
+    await expect(new DeepSeekSearchProvider({
+      ...options,
+      apiKey: '',
+      resolveApiKey,
+      recordRequest,
+    }).search({ query: 'q' }, controller.signal))
+      .rejects.toThrow(expect.objectContaining({ code: 'WEB_ABORTED' }))
+    expect(resolveApiKey).not.toHaveBeenCalled()
+    expect(recordRequest).not.toHaveBeenCalled()
+    expect(fetchMock).not.toHaveBeenCalled()
+  })
+
+  it('aborts while an uncooperative credential resolver remains pending', async () => {
+    const resolveApiKey = vi.fn(() => new Promise(() => {}))
+    const recordRequest = vi.fn()
+    const fetchMock = vi.fn()
+    vi.stubGlobal('fetch', fetchMock)
+    const controller = new AbortController()
+    const search = new DeepSeekSearchProvider({
+      ...options,
+      apiKey: '',
+      resolveApiKey,
+      recordRequest,
+    }).search({ query: 'q' }, controller.signal)
+    controller.abort(new Error('deadline'))
+    await expect(search).rejects.toThrow(expect.objectContaining({ code: 'WEB_ABORTED' }))
+    expect(resolveApiKey).toHaveBeenCalledOnce()
+    expect(recordRequest).not.toHaveBeenCalled()
+    expect(fetchMock).not.toHaveBeenCalled()
+  })
+
+  it('resolves credentials under an active cancellation signal', async () => {
+    const fetchMock = vi.fn(async () => jsonResponse(searchResponse()))
+    vi.stubGlobal('fetch', fetchMock)
+    const controller = new AbortController()
+    await expect(new DeepSeekSearchProvider({
+      ...options,
+      apiKey: '',
+      resolveApiKey: async () => 'resolved-key',
+    }).search({ query: 'q' }, controller.signal)).resolves.toMatchObject({ truncated: false })
+    const [, init] = fetchMock.mock.calls[0] as unknown as [string, RequestInit]
+    expect((init.headers as Record)['x-api-key']).toBe('resolved-key')
+  })
+
+  it('maps a credential resolver rejection under an active signal to WEB_PROVIDER_ERROR', async () => {
+    const controller = new AbortController()
+    await expect(new DeepSeekSearchProvider({
+      ...options,
+      apiKey: '',
+      resolveApiKey: () => Promise.reject(new Error('credential backend failed')),
+    }).search({ query: 'q' }, controller.signal))
+      .rejects.toThrow(expect.objectContaining({
+        code: 'WEB_PROVIDER_ERROR',
+        message: 'DeepSeek search credential resolution failed: Error: credential backend failed',
+      }))
+  })
+
+  it('uses the default credential reference when no resolver is configured', async () => {
+    await expect(new DeepSeekSearchProvider({ ...options, apiKey: '' }).search({ query: 'q' }))
+      .rejects.toThrow('DeepSeek search has no API key for "DEEPSEEK_API_KEY"')
+  })
+
+  it('observes cancellation triggered synchronously by credential resolution', async () => {
+    const controller = new AbortController()
+    const fetchMock = vi.fn()
+    vi.stubGlobal('fetch', fetchMock)
+    await expect(new DeepSeekSearchProvider({
+      ...options,
+      apiKey: '',
+      resolveApiKey: () => {
+        controller.abort(new Error('resolver cancelled caller'))
+        return Promise.resolve('unused-key')
+      },
+    }).search({ query: 'q' }, controller.signal))
+      .rejects.toThrow(expect.objectContaining({ code: 'WEB_ABORTED' }))
+    expect(fetchMock).not.toHaveBeenCalled()
+  })
+
   it('maps an HTTP error to WEB_PROVIDER_ERROR with the provider message', async () => {
     vi.stubGlobal('fetch', vi.fn(async () => jsonResponse({ error: { message: 'rate limited' } }, { status: 429 })))
     await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
@@ -216,6 +315,17 @@ describe('DeepSeekSearchProvider error handling', () => {
       .rejects.toThrow(expect.objectContaining({ code: 'WEB_ABORTED' }))
   })
 
+  it('maps a custom abort reason to WEB_ABORTED', async () => {
+    const controller = new AbortController()
+    vi.stubGlobal('fetch', vi.fn(async (_input: RequestInfo | URL, init?: RequestInit) =>
+      await new Promise((_resolve, reject) => {
+        init?.signal?.addEventListener('abort', () => { reject(new Error('custom abort reason')) }, { once: true })
+      })))
+    const search = new DeepSeekSearchProvider(options).search({ query: 'q' }, controller.signal)
+    controller.abort(new Error('timeout reason'))
+    await expect(search).rejects.toThrow(expect.objectContaining({ code: 'WEB_ABORTED' }))
+  })
+
   it('maps an unparseable success body to WEB_PROVIDER_ERROR', async () => {
     vi.stubGlobal('fetch', vi.fn(async () => new Response('not json', { status: 200 })))
     await expect(new DeepSeekSearchProvider(options).search({ query: 'q' }))
@@ -323,28 +433,66 @@ describe('web-search-deepseek plugin registration', () => {
       vi.stubGlobal('fetch', fetchMock)
       const ctx = new Context()
       await ctx.plugin(WebService, { searchProvider: DEEPSEEK_PROVIDER_ID })
-      const fiber = await ctx.plugin(deepseekPlugin, {})
+      deepseekPlugin.apply(ctx, {})
       await ctx.web.search({ query: 'q' })
       const [url, init] = fetchMock.mock.calls[0] as unknown as [string, RequestInit]
       expect(url).toBe('https://api.deepseek.com/anthropic/v1/messages')
       expect((init.headers as Record)['x-api-key']).toBe('env-key')
       expect(JSON.parse(init.body as string)).toMatchObject({ model: 'deepseek-v4-flash' })
-      await fiber.dispose()
+      await ctx.fiber.dispose()
     } finally {
       if (prev === undefined) delete process.env.DEEPSEEK_API_KEY
       else process.env.DEEPSEEK_API_KEY = prev
     }
   })
 
-  it('is unavailable when neither config nor env supplies a key', async () => {
+  it('resolves the credential for each search so a stored or rotated key needs no restart', async () => {
+    const previous = process.env.DEEPSEEK_API_KEY
+    delete process.env.DEEPSEEK_API_KEY
+    const dir = await mkdtemp(join(tmpdir(), 'dsh-web-search-credentials-'))
+    const fetchMock = vi.fn(async (_input: RequestInfo | URL, _init?: RequestInit) => jsonResponse(searchResponse()))
+    vi.stubGlobal('fetch', fetchMock)
+    const ctx = new Context()
+    try {
+      await ctx.plugin(WebService, { searchProvider: DEEPSEEK_PROVIDER_ID })
+      await ctx.plugin(CredentialsLocal, { path: join(dir, '.env'), watch: false })
+      await ctx.plugin(deepseekPlugin, { baseURL: 'https://api.deepseek.test/anthropic/v1' })
+
+      await expect(ctx.web.search({ query: 'missing' }))
+        .rejects.toThrow(expect.objectContaining({ code: 'WEB_PROVIDER_CREDENTIAL_MISSING' }))
+
+      const ref = credentialRef('DEEPSEEK_API_KEY')
+      await ctx.credentials.set(ref, 'stored-key')
+      await ctx.web.search({ query: 'stored' })
+      await ctx.credentials.set(ref, 'rotated-key')
+      await ctx.web.search({ query: 'rotated' })
+
+      const headers = fetchMock.mock.calls.map(([, init]) => (init as RequestInit).headers as Record)
+      expect(headers.map(value => value['x-api-key'])).toEqual(['stored-key', 'rotated-key'])
+    } finally {
+      await ctx.fiber.dispose()
+      await rm(dir, { recursive: true, force: true })
+      if (previous === undefined) delete process.env.DEEPSEEK_API_KEY
+      else process.env.DEEPSEEK_API_KEY = previous
+    }
+  })
+
+  it('reports an actionable credential error when neither config nor env supplies a key', async () => {
     const prev = process.env.DEEPSEEK_API_KEY
     delete process.env.DEEPSEEK_API_KEY
     try {
       const ctx = new Context()
       await ctx.plugin(WebService, { searchProvider: DEEPSEEK_PROVIDER_ID })
       await ctx.plugin(deepseekPlugin, {})
-      await expect(ctx.web.search({ query: 'q' }))
-        .rejects.toThrow(expect.objectContaining({ code: 'WEB_PROVIDER_CONFIGURED_UNAVAILABLE' }))
+      let caught: unknown
+      try {
+        await ctx.web.search({ query: 'q' })
+      } catch (error: unknown) {
+        caught = error
+      }
+      expect(caught).toMatchObject({ code: 'WEB_PROVIDER_CREDENTIAL_MISSING' })
+      if (!(caught instanceof Error)) throw new Error('search did not throw an Error')
+      expect(caught.message).toMatch(/store it through the credentials service.*Models page/s)
     } finally {
       if (prev !== undefined) process.env.DEEPSEEK_API_KEY = prev
     }
diff --git a/packages/web/web-search-deepseek/tsconfig.json b/packages/web/web-search-deepseek/tsconfig.json
index e9610ea5c9..76c411d089 100644
--- a/packages/web/web-search-deepseek/tsconfig.json
+++ b/packages/web/web-search-deepseek/tsconfig.json
@@ -20,6 +20,15 @@
     {
       "path": "../web"
     },
+    {
+      "path": "../../core/agent"
+    },
+    {
+      "path": "../../core/session"
+    },
+    {
+      "path": "../../credentials/credentials"
+    },
     {
       "path": "../../support/invariants"
     }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index ebdcbb6c09..2197075d73 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -414,6 +414,9 @@ importers:
       '@deepseek-ai/dsh-tool-todo':
         specifier: workspace:^
         version: link:../../packages/todo/tool-todo
+      '@deepseek-ai/dsh-tool-web':
+        specifier: workspace:^
+        version: link:../../packages/web/tool-web
       '@deepseek-ai/dsh-tool-workflow':
         specifier: workspace:^
         version: link:../../packages/workflow/tool-workflow
@@ -429,6 +432,12 @@ importers:
       '@deepseek-ai/dsh-user-interaction':
         specifier: workspace:^
         version: link:../../packages/ui/user-interaction
+      '@deepseek-ai/dsh-web':
+        specifier: workspace:^
+        version: link:../../packages/web/web
+      '@deepseek-ai/dsh-web-search-deepseek':
+        specifier: workspace:^
+        version: link:../../packages/web/web-search-deepseek
       '@deepseek-ai/dsh-workflow-workerthread':
         specifier: workspace:^
         version: link:../../packages/workflow/workflow-workerthread
@@ -1224,6 +1233,9 @@ importers:
       '@deepseek-ai/dsh-client-runtime':
         specifier: workspace:^
         version: link:../runtime
+      '@deepseek-ai/dsh-client-test-runtime':
+        specifier: workspace:^
+        version: link:../test-runtime
       '@deepseek-ai/dsh-client-ui-layout':
         specifier: workspace:^
         version: link:../ui-layout
@@ -1251,6 +1263,9 @@ importers:
       '@deepseek-ai/dsh-session-projection':
         specifier: workspace:^
         version: link:../../session-projection/session-projection
+      '@deepseek-ai/dsh-token-meter':
+        specifier: workspace:^
+        version: link:../../llm/token-meter
       '@deepseek-ai/dsh-tool-todo':
         specifier: workspace:^
         version: link:../../todo/tool-todo
@@ -1392,6 +1407,9 @@ importers:
       '@deepseek-ai/dsh-client-schema-form':
         specifier: workspace:^
         version: link:../schema-form
+      '@deepseek-ai/dsh-client-test-runtime':
+        specifier: workspace:^
+        version: link:../test-runtime
       '@deepseek-ai/dsh-client-ui-primitives':
         specifier: workspace:^
         version: link:../ui-primitives
@@ -1663,6 +1681,9 @@ importers:
       '@deepseek-ai/dsh-client-runtime':
         specifier: workspace:^
         version: link:../runtime
+      '@deepseek-ai/dsh-client-test-runtime':
+        specifier: workspace:^
+        version: link:../test-runtime
       '@deepseek-ai/dsh-client-ui-primitives':
         specifier: workspace:^
         version: link:../ui-primitives
@@ -1822,6 +1843,9 @@ importers:
       '@deepseek-ai/dsh-client-runtime':
         specifier: workspace:^
         version: link:../runtime
+      '@deepseek-ai/dsh-client-test-runtime':
+        specifier: workspace:^
+        version: link:../test-runtime
       '@deepseek-ai/dsh-client-ui-primitives':
         specifier: workspace:^
         version: link:../ui-primitives
@@ -3363,6 +3387,9 @@ importers:
       '@deepseek-ai/dsh-client-runtime':
         specifier: workspace:^
         version: link:../../client/runtime
+      '@deepseek-ai/dsh-client-test-runtime':
+        specifier: workspace:^
+        version: link:../../client/test-runtime
       '@deepseek-ai/dsh-client-ui-primitives':
         specifier: workspace:^
         version: link:../../client/ui-primitives
@@ -3567,6 +3594,9 @@ importers:
       schemastery:
         specifier: ^3.18.0
         version: 3.18.0
+      zod:
+        specifier: ^4.4.3
+        version: 4.4.3
     devDependencies:
       '@deepseek-ai/dsh-invariants':
         specifier: workspace:^
@@ -3577,6 +3607,9 @@ importers:
       '@deepseek-ai/dsh-session':
         specifier: workspace:^
         version: link:../../core/session
+      '@deepseek-ai/dsh-session-projection':
+        specifier: workspace:^
+        version: link:../../session-projection/session-projection
       cordis:
         specifier: ^4.0.0-rc.7
         version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
@@ -3949,6 +3982,9 @@ importers:
         specifier: ^3.18.0
         version: 3.18.0
     devDependencies:
+      '@deepseek-ai/dsh-agent':
+        specifier: workspace:^
+        version: link:../../core/agent
       '@deepseek-ai/dsh-invariants':
         specifier: workspace:^
         version: link:../../support/invariants
@@ -3958,6 +3994,9 @@ importers:
       '@deepseek-ai/dsh-session':
         specifier: workspace:^
         version: link:../../core/session
+      '@deepseek-ai/dsh-system-prompt':
+        specifier: workspace:^
+        version: link:../../core/system-prompt
       cordis:
         specifier: ^4.0.0-rc.7
         version: 4.0.0-rc.7(@cordisjs/plugin-include@1.0.4)(@cordisjs/plugin-loader@1.0.0-rc.5)
@@ -5834,9 +5873,21 @@ importers:
         specifier: ^3.18.0
         version: 3.18.0
     devDependencies:
+      '@deepseek-ai/dsh-agent':
+        specifier: workspace:^
+        version: link:../../core/agent
+      '@deepseek-ai/dsh-credentials':
+        specifier: workspace:^
+        version: link:../../credentials/credentials
+      '@deepseek-ai/dsh-credentials-local':
+        specifier: workspace:^
+        version: link:../../credentials/credentials-local
       '@deepseek-ai/dsh-invariants':
         specifier: workspace:^
         version: link:../../support/invariants
+      '@deepseek-ai/dsh-session':
+        specifier: workspace:^
+        version: link:../../core/session
       '@deepseek-ai/dsh-web':
         specifier: workspace:^
         version: link:../web
diff --git a/scripts/gen-cordis-catalog.ts b/scripts/gen-cordis-catalog.ts
index 85a4e00622..dc5c392549 100644
--- a/scripts/gen-cordis-catalog.ts
+++ b/scripts/gen-cordis-catalog.ts
@@ -165,6 +165,7 @@ export const LINK_MAP: Readonly> = {
   SubagentService: 'subagent.md',
   SubagentStartRequest: 'subagent.md',
   AssembleContext: 'system-prompt.md',
+  PromptContext: 'system-prompt.md',
   PromptSection: 'system-prompt.md',
   SystemPrompt: 'system-prompt.md',
   ToolProviderResult: 'system-prompt.md',
diff --git a/scripts/snapshots/translation-prompt-v4/request-response.expected.json b/scripts/snapshots/translation-prompt-v4/request-response.expected.json
index ecdfab081b..f66b45017c 100644
--- a/scripts/snapshots/translation-prompt-v4/request-response.expected.json
+++ b/scripts/snapshots/translation-prompt-v4/request-response.expected.json
@@ -8,11 +8,11 @@
       },
       {
         "role": "user",
-        "content": "# DeepSeek Harness\n\nEnglish | [中文](README.zh.md)\n\nDeepSeek Harness (`dsh`) is an open-source coding agent built on the DeepSeek Harness SDK.\n\nIt uses an architecture where **everything is a plugin**.\n\n## Internal testing notice\n\nThank you for taking the time to try DeepSeek Harness.\n\nThis version is still in internal testing. Its functionality still needs improvement, and the experience may feel a little rough.\n\n“As one cuts and files, as one chisels and polishes.” A product grows through real encounters and candid feedback. Problems you discover in real use may prompt us to reconsider—or even overturn—our existing designs.\n\nWe especially want to hear about failures, confusion, and friction. If you have any feedback or suggestions, please leave us a message in our WeCom group. Every piece of feedback helps us refine it.\n\n## Install\n\nInstall `dsh` with one command:\n\n```sh\ncurl -fsSL https://raw.githubusercontent.com/deepseek-harness/deepseek-harness/master/scripts/install.sh | sh\n```\n\nThe installer requires `git` and Node `^22.19 || >=24`, offers to install `pnpm` when it is missing, and prompts for a DeepSeek API key.\n\nThe installer keeps every checkout under `~/.dsh/source`: the master clone at `~/.dsh/source/master` and each install's staging checkout as a git worktree `~/.dsh/source/staging-`. The stable symlink `~/.dsh/source/current` points at the active staging worktree, and `dsh` in `~/.local/bin` links to `current/bin/dsh`, so an upgrade repoints one symlink and the `dsh` on PATH never moves. Re-running the command adds a fresh staging worktree from an updated master and repoints `current` at it. See [`scripts/install.sh`](scripts/install.sh) for alternate install locations and other options.\n\n## Use DeepSeek Harness\n\n### Web UI\n\nFor the recommended local interface, build the active checkout after installation and after each update, then start the Web UI:\n\n```sh\n(cd ~/.dsh/source/current && pnpm run build)\ndsh web\n```\n\nThe full build produces the library and client bundles plus the frontend dist. The path above is the installer's default. If you set `DSH_SOURCE` or `DSH_CURRENT`, or reused an existing checkout, replace `~/.dsh/source/current` with that checkout path; see [`scripts/install.sh`](scripts/install.sh) for details. The Web UI is served at `http://127.0.0.1:3080` by default.\n\n### TUI\n\nStart the full-screen terminal interface:\n\n```sh\ndsh\n```\n\n### Headless\n\nRun one task, print the final answer, and exit:\n\n```sh\ndsh -p \"summarize this workspace\"\n```\n\n### Automation and SDKs\n\nFrom a source checkout with `DEEPSEEK_API_KEY` in the environment or its root `.env`, start the ACP automation server:\n\n```sh\npnpm run demo:acp\n```\n\nThe [Python SDK](python/README.md) drives a bundled JSON-RPC runtime. The [examples](examples/README.md) cover the runnable headless, ACP, JSON-RPC, Code Mode, and self-referential compositions.\n\n## Why DeepSeek Harness\n\nBuilt-in capabilities cover file reading, editing, and search; shell and persistent PTY execution; reusable skills; task tracking, goals, plans, todos, and background tasks; subagents and workflows; sandboxing and approvals; settings and credentials; persistent, resumable, forkable, and queryable sessions; LSP and web access; context compaction; and telemetry. Each composition selects the subset appropriate to its surface. The TUI and Web UI both include Plan Mode.\n\n- **Everything is a plugin.** Models, tools, policies, storage, context management, and interfaces are composable [Cordis plugins](docs/user/develop/basic/index.md), so deployments can extend or replace behavior without forking the agent loop. See the [architecture](docs/architecture.md) for the underlying design.\n- **Runs are reconstructable.** Anything visible to the model is logged in the authoritative session stream; persistence, resume/fork/query, replay, telemetry, and UIs derive from the same events. See the [session-log architecture](docs/architecture.md#session-log).\n- **Code Mode (opt-in).** It exposes a `run_code` tool and a generated TypeScript SDK; only program output re-enters model context. See [Code Mode](packages/core/tools/README.md#code-mode).\n- **Self-referential Cordis tools are opt-in.** They let the agent inspect its live runtime and mount or unmount plugins while it runs. See the [Cordis tools](packages/cordis/tool-cordis/README.md).\n\n## Community\n\nFollow DeepSeek Harness on Twitter for project updates.\n\n## Development\n\n```sh\npnpm install\npnpm run test:coverage\n```\n\nStart with the [development guide](docs/development.md) and read the [architecture](docs/architecture.md) before changing packages.\n\nFor agents, follow [AGENTS.md](AGENTS.md).\n\nDeepSeek Harness is currently in internal testing.\n\n## License\n\n[BSD 3-Clause](LICENSE)\n"
+        "content": "# DeepSeek Harness\n\nEnglish | [中文](README.zh.md)\n\nDeepSeek Harness (`dsh`) is an open-source coding agent built on the DeepSeek Harness SDK.\n\nIt uses an architecture where **everything is a plugin**.\n\n## Internal testing notice\n\n感谢您愿意拨冗试用 DeepSeek Harness。当前版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。\n\n“如切如磋，如琢如磨。” 产品的成长，离不开一次次真实的碰撞与坦诚的反馈。您在真实使用中发现的问题，也可能促使我们重新审视，甚至推翻已有的设计。\n\n为了帮助我们更准确地还原您真实使用中的问题，内测版本默认会上传所有 Session Log；如需关闭，可以设置环境变量 `DSH_TELEMETRY_DISABLED=1`。另外，如果您有任何反馈与建议，请在企业微信群中留言告诉我们。每一条反馈，都会帮助我们把它打磨得更好。\n\n## Install\n\nInstall `dsh` with one command:\n\n```sh\ncurl -fsSL https://raw.githubusercontent.com/deepseek-harness/deepseek-harness/master/scripts/install.sh | sh\n```\n\nThe installer requires `git` and Node `^22.19 || >=24`, offers to install `pnpm` when it is missing, and prompts for a DeepSeek API key.\n\nThe installer keeps every checkout under `~/.dsh/source`: the master clone at `~/.dsh/source/master` and each install's staging checkout as a git worktree `~/.dsh/source/staging-`. The stable symlink `~/.dsh/source/current` points at the active staging worktree, and `dsh` in `~/.local/bin` links to `current/bin/dsh`, so an upgrade repoints one symlink and the `dsh` on PATH never moves. Re-running the command adds a fresh staging worktree from an updated master and repoints `current` at it. See [`scripts/install.sh`](scripts/install.sh) for alternate install locations and other options.\n\n## Use DeepSeek Harness\n\n### Web UI\n\nFor the recommended local interface, build the active checkout after installation and after each update, then start the Web UI:\n\n```sh\n(cd ~/.dsh/source/current && pnpm run build)\ndsh web\n```\n\nThe full build produces the library and client bundles plus the frontend dist. The path above is the installer's default. If you set `DSH_SOURCE` or `DSH_CURRENT`, or reused an existing checkout, replace `~/.dsh/source/current` with that checkout path; see [`scripts/install.sh`](scripts/install.sh) for details. The Web UI is served at `http://127.0.0.1:3080` by default.\n\n### TUI\n\nStart the full-screen terminal interface:\n\n```sh\ndsh\n```\n\n### Headless\n\nRun one task, print the final answer, and exit:\n\n```sh\ndsh -p \"summarize this workspace\"\n```\n\n### Automation and SDKs\n\nFrom a source checkout with `DEEPSEEK_API_KEY` in the environment or its root `.env`, start the ACP automation server:\n\n```sh\npnpm run demo:acp\n```\n\nThe [Python SDK](python/README.md) drives a bundled JSON-RPC runtime. The [examples](examples/README.md) cover the runnable headless, ACP, JSON-RPC, Code Mode, and self-referential compositions.\n\n## Why DeepSeek Harness\n\nBuilt-in capabilities cover file reading, editing, and search; shell and persistent PTY execution; reusable skills; task tracking, goals, plans, todos, and background tasks; subagents and workflows; sandboxing and approvals; settings and credentials; persistent, resumable, forkable, and queryable sessions; LSP and web access; context compaction; and telemetry. Each composition selects the subset appropriate to its surface. The TUI and Web UI both include Plan Mode.\n\n- **Everything is a plugin.** Models, tools, policies, storage, context management, and interfaces are composable [Cordis plugins](docs/user/develop/basic/index.md), so deployments can extend or replace behavior without forking the agent loop. See the [architecture](docs/architecture.md) for the underlying design.\n- **Runs are reconstructable.** Anything visible to the model is logged in the authoritative session stream; persistence, resume/fork/query, replay, telemetry, and UIs derive from the same events. See the [session-log architecture](docs/architecture.md#session-log).\n- **Code Mode (opt-in).** It exposes a `run_code` tool and a generated TypeScript SDK; only program output re-enters model context. See [Code Mode](packages/core/tools/README.md#code-mode).\n- **Self-referential Cordis tools are opt-in.** They let the agent inspect its live runtime and mount or unmount plugins while it runs. See the [Cordis tools](packages/cordis/tool-cordis/README.md).\n\n## Community\n\nFollow DeepSeek Harness on Twitter for project updates.\n\n## Development\n\n```sh\npnpm install\npnpm run test:coverage\n```\n\nStart with the [development guide](docs/development.md) and read the [architecture](docs/architecture.md) before changing packages.\n\nFor agents, follow [AGENTS.md](AGENTS.md).\n\nDeepSeek Harness is currently in internal testing.\n\n## License\n\n[BSD 3-Clause](LICENSE)\n"
       },
       {
         "role": "assistant",
-        "content": "# DeepSeek Harness\n\n[English](README.md) | 中文\n\nDeepSeek Harness（`dsh`）是一款基于 DeepSeek Harness SDK 构建的开源 coding agent（编程智能体）。\n\n它采用了**一切皆插件**的架构。\n\n## 内测声明\n\n感谢您愿意拨冗试用 DeepSeek Harness。\n\n目前的版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。\n\n“如切如磋，如琢如磨。” 产品的成长，离不开一次次真实的碰撞与坦诚的反馈。您在真实使用中发现的问题，也可能促使我们重新审视，甚至推翻已有的设计。\n\n我们尤其希望听见那些失败、困惑与不顺手的时刻——如果您有任何反馈与建议，请在企业微信群中留言告诉我们。每一条反馈，都会帮助我们把它打磨得更好。\n\n## 安装\n\n使用一条命令安装 `dsh`：\n\n```sh\ncurl -fsSL https://raw.githubusercontent.com/deepseek-harness/deepseek-harness/master/scripts/install.sh | sh\n```\n\n安装器要求系统已安装 `git` 和 Node `^22.19 || >=24`，缺少 `pnpm` 时可代为安装，并会提示输入 DeepSeek API 密钥。\n\n安装器会把所有检出都放在 `~/.dsh/source` 下：master 克隆位于 `~/.dsh/source/master`，每次安装的 staging 检出是一个 git worktree `~/.dsh/source/staging-<时间戳>`。稳定符号链接 `~/.dsh/source/current` 指向当前生效的 staging worktree，`~/.local/bin` 中的 `dsh` 链接到 `current/bin/dsh`，因此升级只需重指一个符号链接，PATH 上的 `dsh` 从不移动。再次运行该命令会基于更新后的 master 新增一个 staging worktree，并把 `current` 重指到它。其他安装位置和选项见 [`scripts/install.sh`](scripts/install.sh)。\n\n## 使用 DeepSeek Harness\n\n### Web UI\n\n推荐在本地使用 Web UI。安装完成后以及每次更新后，请先构建当前生效的检出，再启动 Web UI：\n\n```sh\n(cd ~/.dsh/source/current && pnpm run build)\ndsh web\n```\n\n完整构建会生成库与客户端 bundle，以及前端 dist。上述路径是安装器的默认位置。如果你设置过 `DSH_SOURCE` 或 `DSH_CURRENT`，或者复用了已有检出，请把 `~/.dsh/source/current` 换成该检出路径；详情见 [`scripts/install.sh`](scripts/install.sh)。Web UI 默认通过 `http://127.0.0.1:3080` 提供服务。\n\n### TUI\n\n启动全屏终端界面：\n\n```sh\ndsh\n```\n\n### Headless\n\n运行一项任务，打印最终答案后退出：\n\n```sh\ndsh -p \"summarize this workspace\"\n```\n\n### 自动化与 SDK\n\n在源码检出中通过环境变量或根目录 `.env` 设置 `DEEPSEEK_API_KEY`，然后启动 ACP（Agent Client Protocol）自动化服务器：\n\n```sh\npnpm run demo:acp\n```\n\n[Python SDK](python/README.md) 驱动随附的 JSON-RPC 运行时。[示例](examples/README.md)涵盖可运行的 headless、ACP、JSON-RPC、Code Mode 和自指组合。\n\n## 为什么选择 DeepSeek Harness\n\n内置功能涵盖文件读取、编辑与搜索、shell 和持久 PTY 执行、可复用 skill（技能）、任务跟踪、目标、计划、待办事项与后台任务、subagent 与工作流、沙箱与审批、设置与凭据、可持久化、恢复、fork 与查询的会话、LSP 与 Web 访问、上下文压缩（context compaction），以及遥测。每个组合只选用适合其使用方式的能力子集。TUI 与 Web UI 均包含 Plan Mode。\n\n- **一切皆插件。** 模型、工具、策略、存储、上下文管理和界面均可组合为 [Cordis 插件](docs/user/develop/basic/index.md)，部署方无需 fork agent loop（智能体循环）即可扩展或替换行为。底层设计见[架构文档](docs/architecture.md)。\n- **运行可重建。** 凡是模型可见的内容，都会记录在权威会话流中；持久化、恢复／fork／查询、回放、遥测和 UI 均从同一组事件派生。参见[会话日志架构](docs/architecture.md#session-log)。\n- **Code Mode（需显式启用）。** 它会提供 `run_code` 工具和生成的 TypeScript SDK，只有程序输出会重新进入模型上下文。参见 [Code Mode](packages/core/tools/README.md#code-mode)。\n- **自指 Cordis 工具需显式启用。** 这些工具可让 agent 检查自身的实时运行时，并在运行中挂载或卸载插件。参见 [Cordis 工具](packages/cordis/tool-cordis/README.md)。\n\n## 社区\n\n扫描二维码，或打开 DeepSeek Harness 微信社区申请页面 申请加入。\n\n
\n  \"DeepSeek\n
\n\n## 开发\n\n```sh\npnpm install\npnpm run test:coverage\n```\n\n请先阅读[开发指南](docs/development.md)；修改包之前，请阅读[架构文档](docs/architecture.md)。\n\n面向 agent：遵循 [AGENTS.md](AGENTS.md)。\n\nDeepSeek Harness 目前处于内测阶段。\n\n## 许可证\n\n[BSD 3-Clause](LICENSE)\n"
+        "content": "# DeepSeek Harness\n\n[English](README.md) | 中文\n\nDeepSeek Harness（`dsh`）是一款基于 DeepSeek Harness SDK 构建的开源 coding agent（编程智能体）。\n\n它采用了**一切皆插件**的架构。\n\n## 内测声明\n\n感谢您愿意拨冗试用 DeepSeek Harness。当前版本仍处于内部测试阶段，功能仍待完善，体验难免有些粗糙。\n\n“如切如磋，如琢如磨。” 产品的成长，离不开一次次真实的碰撞与坦诚的反馈。您在真实使用中发现的问题，也可能促使我们重新审视，甚至推翻已有的设计。\n\n为了帮助我们更准确地还原您真实使用中的问题，内测版本默认会上传所有 Session Log；如需关闭，可以设置环境变量 `DSH_TELEMETRY_DISABLED=1`。另外，如果您有任何反馈与建议，请在企业微信群中留言告诉我们。每一条反馈，都会帮助我们把它打磨得更好。\n\n## 安装\n\n使用一条命令安装 `dsh`：\n\n```sh\ncurl -fsSL https://raw.githubusercontent.com/deepseek-harness/deepseek-harness/master/scripts/install.sh | sh\n```\n\n安装器要求系统已安装 `git` 和 Node `^22.19 || >=24`，缺少 `pnpm` 时可代为安装，并会提示输入 DeepSeek API 密钥。\n\n安装器会把所有检出都放在 `~/.dsh/source` 下：master 克隆位于 `~/.dsh/source/master`，每次安装的 staging 检出是一个 git worktree `~/.dsh/source/staging-<时间戳>`。稳定符号链接 `~/.dsh/source/current` 指向当前生效的 staging worktree，`~/.local/bin` 中的 `dsh` 链接到 `current/bin/dsh`，因此升级只需重指一个符号链接，PATH 上的 `dsh` 从不移动。再次运行该命令会基于更新后的 master 新增一个 staging worktree，并把 `current` 重指到它。其他安装位置和选项见 [`scripts/install.sh`](scripts/install.sh)。\n\n## 使用 DeepSeek Harness\n\n### Web UI\n\n推荐在本地使用 Web UI。安装完成后以及每次更新后，请先构建当前生效的检出，再启动 Web UI：\n\n```sh\n(cd ~/.dsh/source/current && pnpm run build)\ndsh web\n```\n\n完整构建会生成库与客户端 bundle，以及前端 dist。上述路径是安装器的默认位置。如果你设置过 `DSH_SOURCE` 或 `DSH_CURRENT`，或者复用了已有检出，请把 `~/.dsh/source/current` 换成该检出路径；详情见 [`scripts/install.sh`](scripts/install.sh)。Web UI 默认通过 `http://127.0.0.1:3080` 提供服务。\n\n### TUI\n\n启动全屏终端界面：\n\n```sh\ndsh\n```\n\n### Headless\n\n运行一项任务，打印最终答案后退出：\n\n```sh\ndsh -p \"summarize this workspace\"\n```\n\n### 自动化与 SDK\n\n在源码检出中通过环境变量或根目录 `.env` 设置 `DEEPSEEK_API_KEY`，然后启动 ACP（Agent Client Protocol）自动化服务器：\n\n```sh\npnpm run demo:acp\n```\n\n[Python SDK](python/README.md) 驱动随附的 JSON-RPC 运行时。[示例](examples/README.md)涵盖可运行的 headless、ACP、JSON-RPC、Code Mode 和自指组合。\n\n## 为什么选择 DeepSeek Harness\n\n内置功能涵盖文件读取、编辑与搜索、shell 和持久 PTY 执行、可复用 skill（技能）、任务跟踪、目标、计划、待办事项与后台任务、subagent 与工作流、沙箱与审批、设置与凭据、可持久化、恢复、fork 与查询的会话、LSP 与 Web 访问、上下文压缩（context compaction），以及遥测。每个组合只选用适合其使用方式的能力子集。TUI 与 Web UI 均包含 Plan Mode。\n\n- **一切皆插件。** 模型、工具、策略、存储、上下文管理和界面均可组合为 [Cordis 插件](docs/user/develop/basic/index.md)，部署方无需 fork agent loop（智能体循环）即可扩展或替换行为。底层设计见[架构文档](docs/architecture.md)。\n- **运行可重建。** 凡是模型可见的内容，都会记录在权威会话流中；持久化、恢复／fork／查询、回放、遥测和 UI 均从同一组事件派生。参见[会话日志架构](docs/architecture.md#session-log)。\n- **Code Mode（需显式启用）。** 它会提供 `run_code` 工具和生成的 TypeScript SDK，只有程序输出会重新进入模型上下文。参见 [Code Mode](packages/core/tools/README.md#code-mode)。\n- **自指 Cordis 工具需显式启用。** 这些工具可让 agent 检查自身的实时运行时，并在运行中挂载或卸载插件。参见 [Cordis 工具](packages/cordis/tool-cordis/README.md)。\n\n## 社区\n\n扫描二维码，或打开 DeepSeek Harness 微信社区申请页面 申请加入。\n\n
\n  \"DeepSeek\n
\n\n## 开发\n\n```sh\npnpm install\npnpm run test:coverage\n```\n\n请先阅读[开发指南](docs/development.md)；修改包之前，请阅读[架构文档](docs/architecture.md)。\n\n面向 agent：遵循 [AGENTS.md](AGENTS.md)。\n\nDeepSeek Harness 目前处于内测阶段。\n\n## 许可证\n\n[BSD 3-Clause](LICENSE)\n"
       },
       {
         "role": "user",
diff --git a/scripts/type-equiv.manifest.json b/scripts/type-equiv.manifest.json
index 9beac1e732..da1375b1d6 100644
--- a/scripts/type-equiv.manifest.json
+++ b/scripts/type-equiv.manifest.json
@@ -271,6 +271,11 @@
       "symbol": "AssembleContext",
       "source": "packages/core/system-prompt/src/index.ts"
     },
+    {
+      "doc": "docs/core-data-structures/system-prompt.md",
+      "symbol": "PromptContext",
+      "source": "packages/core/system-prompt/src/index.ts"
+    },
     {
       "doc": "docs/core-data-structures/system-prompt.md",
       "symbol": "PromptSection",
@@ -348,6 +353,11 @@
       "symbol": "EpochHeader",
       "source": "packages/core/session/src/types.ts"
     },
+    {
+      "doc": "docs/core-data-structures/session.md",
+      "symbol": "RequestContext",
+      "source": "packages/core/session/src/types.ts"
+    },
     {
       "doc": "docs/core-data-structures/session.md",
       "symbol": "TodoItem",
diff --git a/scripts/verify-package-readme-model-experience.ts b/scripts/verify-package-readme-model-experience.ts
index 24debd782c..4104ff8fdc 100644
--- a/scripts/verify-package-readme-model-experience.ts
+++ b/scripts/verify-package-readme-model-experience.ts
@@ -77,7 +77,6 @@ const SENTENCE_MODEL_EXPERIENCE: Readonly> = {
   'packages/examples/agent-spine-demo': { kind: 'indirect', reason: 'The bundle only mounts model-facing child plugins.' },
   'packages/fs/fs': { kind: 'indirect', reason: 'The service interface delegates model rendering to dsh-tool-fs.' },
   'packages/fs/fs-local': { kind: 'indirect', reason: 'The provider backend delegates model rendering to dsh-tool-fs.' },
-  'packages/fs/fs-sandbox': { kind: 'indirect', reason: 'The provider backend delegates model rendering to dsh-tool-fs.' },
   'packages/hooks/hook-protocol': { kind: 'indirect', reason: 'Only the hook bridge plugins render decoded hook output to a model.' },
   'packages/host/apiproxy': { kind: 'none', reason: 'The wire contract and fetch carriers move already-composed messages and register no model surface.' },
   'packages/host/directory-picker': { kind: 'none', reason: 'The GUI-host picking seam registers no model surface.' },
@@ -92,7 +91,6 @@ const SENTENCE_MODEL_EXPERIENCE: Readonly> = {
   'packages/subprocess/subprocess': { kind: 'indirect', reason: 'The seam delegates all model rendering to consumer seams such as the bash executor family.' },
   'packages/subprocess/subprocess-local': { kind: 'indirect', reason: 'The spawn backend delegates model rendering to consumer seams such as the bash executor family.' },
   'packages/sandbox/sandbox-local': { kind: 'indirect', reason: 'The provider backend delegates model rendering to dsh-bash-sandbox and dsh-tool-bash.' },
-  'packages/sandbox/sandbox-policy': { kind: 'indirect', reason: 'The policy service holds the mode dsh-tool-bash and dsh-tool-fs render in their denial markers.' },
   'packages/sdk/create-sdk': { kind: 'indirect', reason: 'The initializer only writes project files; selected runtime plugins provide the generated project model surface.' },
   'packages/sdk/helper': { kind: 'none', reason: 'The project domain edits files and registers no live agent or model surface.' },
   'packages/sdk/scripts': { kind: 'indirect', reason: 'The launcher delegates model context to the loaded project plugin tree.' },
diff --git a/tsconfig.host.json b/tsconfig.host.json
index 3e89a91d92..ba8a0b6aac 100644
--- a/tsconfig.host.json
+++ b/tsconfig.host.json
@@ -29,9 +29,11 @@
     "apps/web/tests/code-mode-round.e2e.ts",
     "apps/web/tests/composer-draft-scroll.e2e.ts",
     "apps/web/tests/cordis-tool-round.e2e.ts",
+    "apps/web/tests/web-search-round.e2e.ts",
     "apps/web/tests/message-actions.e2e.ts",
     "apps/web/tests/queue-actions.e2e.ts",
     "apps/web/tests/skill-invocation-policy.e2e.ts",
+    "apps/web/tests/permission-policy-context.e2e.ts",
     "apps/web/tests/access-confirmation.e2e.ts",
     "apps/cli/tests/**/*.ts",
     "examples/*/src/**/*.ts",
diff --git a/vendor/README.md b/vendor/README.md
index b140c057ab..2d3e1b6b05 100644
--- a/vendor/README.md
+++ b/vendor/README.md
@@ -39,6 +39,7 @@ Keep this log exhaustive — every divergence from upstream must be listed.
 7. **`cordis/src/*.ts` JSDoc enrichment**: added `@param`/`@returns` tags and contract documentation (disposal semantics, waterfall veto, bail conditions, error cases) across the public plugin-author surface — `Context` (class, statics, and the `Context` interface properties incl. `root`), `EventsService`, `Fiber`, `RegistryService`, `ReflectService`, `Service`, `LoggerService` and their `declare module './context.ts'` overloads. Comment-only; no code changes. Motivation: the website API-reference generator renders these docs and hard-errors on undocumented members. Retire this entry when the enrichment is upstreamed to the fork.
 8. **`include/src/index.ts` hot-reload hardening**: `refresh()` awaits the full read-and-update and catches failures (logging a warning and keeping the last good entry tree) instead of rethrowing — upstream's throw escaped `@cordisjs/plugin-hmr`'s async watcher callback as an unhandled rejection, so one bad `cordis.yml` edit killed a live app. `read()` rejects a non-array parse result (an empty or mid-write truncated file parses to `undefined`, which upstream later crashed on) and commits `content`/`data` only on success, so reverting an edit to the exact last good content reads as "unchanged". `refresh()` and the `internal/update` listener re-apply `config.patches` before `root.update()`, matching initial load; upstream applied patches only in `[Service.init]`, so any config hot-reload silently reverted overlay-patched entries and removed inserted ones. `applyPatches` deep-copies via `structuredClone` instead of mutating the cached parse (repeated application converges; removing a patch reverts), and the veto-style `internal/update` listener persists the incoming config itself (`Fiber.update` only assigns behind `next()`), so later re-reads use the new patches. `[Service.init]` falls back to `initial` only on `ENOENT`; an existing-but-invalid file fails loud with its real parse error instead of "config file not found" (or a silent overwrite). `applyPatches` also indexes each `insert`ed entry as it is added, so a later patch in the same list can configure or disable a row an earlier patch inserted; upstream built the id index once before the patch loop, leaving inserted rows silently unpatchable. That matters because `dsh` composes one shared base (`apps/cli/config/base.cordis.yml`) with a surface overlay, an optional `--config` overlay, and the personal `~/.dsh/config.yaml` as sibling patch lists at one include level — patches never cross an include boundary, so surface-only rows would otherwise be unreachable from user config. Covered by `packages/ui/app-boot/tests/config-reload.spec.ts`.
 9. **Vendored Node-compatible TypeScript**: marked erased imports explicitly across `cordis`, `loader`, `include`, `hmr`, and `schemastery` so Node's native TypeScript transform does not request types as runtime exports. Schemastery's source uses an ESM default export and its package declares `type: module`; its built ESM/CJS entries retain explicit `.mjs`/`.cjs` extensions.
+10. **`include/src/index.ts` patch-semantics export**: extracted the private `applyPatches` body into the exported pure function `applyEntryPatches(data, patches, warn)` (the method delegates to it) and exported the `!!js` YAML dialect as `entryListSchema`, so `dsh --dump-config` composes and prints exactly what the include would mount without booting a tree. Behavior-preserving for mounting; the extraction exists because config tooling must never reimplement (and drift from) the patch algorithm.
 
 ## Sync procedure
 
diff --git a/vendor/include/src/index.ts b/vendor/include/src/index.ts
index 29f6a3a951..29c894401c 100644
--- a/vendor/include/src/index.ts
+++ b/vendor/include/src/index.ts
@@ -13,7 +13,15 @@ const JsExpr = new yaml.Type('tag:yaml.org,2002:js', {
   represent: (data) => data['__jsExpr'],
 })
 
-const schema = yaml.JSON_SCHEMA.extend(JsExpr)
+/**
+ * The entry-list YAML dialect: `!!js` scalars round-trip as expression nodes
+ * the Loader evaluates at entry activation. Exported so config tooling
+ * (`dsh --dump-config`) parses and prints exactly the dialect this include
+ * mounts.
+ */
+export const entryListSchema = yaml.JSON_SCHEMA.extend(JsExpr)
+
+const schema = entryListSchema
 
 const writable: Record = {
   '.json': 'application/json',
@@ -23,6 +31,92 @@ const writable: Record = {
 
 const supported = new Set(Object.keys(writable))
 
+/**
+ * Apply patch lists to an entry list — THE patch semantics of this include,
+ * shared by mounting (`applyPatches`) and offline config tooling
+ * (`dsh --dump-config`) so a dump can never drift from what boots. The input
+ * is never mutated: patching shared entry objects would bake earlier patch
+ * values into the cached parse, so repeated application (config hot-reloads)
+ * could never revert a removed or changed patch. Inserted entries are indexed
+ * as they are added, so a later patch in the same list can target a row an
+ * earlier patch inserted. A patch that matches nothing warns and is skipped.
+ * @param data - the parsed entry list (JSON-safe plain data).
+ * @param patches - the patch list to apply, in order.
+ * @param warn - sink for skipped-patch diagnostics (printf-style, `%C` = code).
+ * @returns a detached entry list with every applicable patch applied.
+ */
+export function applyEntryPatches(
+  data: EntryOptions[],
+  patches: PatchOptions[] | undefined,
+  warn: (message: string, ...args: any[]) => void,
+): EntryOptions[] {
+  if (!patches?.length) return [...data]
+  data = structuredClone(data)
+
+  const entryMap = new Map()
+  const buildMap = (entries: EntryOptions[]) => {
+    for (const entry of entries) {
+      if (entry.id) entryMap.set(entry.id, entry)
+      if (entry.group && Array.isArray(entry.config)) {
+        buildMap(entry.config)
+      }
+    }
+  }
+  buildMap(data)
+
+  for (const patch of patches) {
+    const { id, insert, name, ...overrides } = patch
+
+    if (insert) {
+      if (id) {
+        const target = entryMap.get(id)
+        if (!target) {
+          warn('patch insert: entry %C not found', id)
+          continue
+        }
+        if (!target.group) {
+          warn('patch insert: entry %C is not a group', id)
+          continue
+        }
+        if (!Array.isArray(target.config)) target.config = []
+        target.config.push(...insert)
+      } else {
+        data.push(...insert)
+      }
+      // Index what this patch added so a LATER patch in the same list can
+      // target it. Patch lists compose one layer per source (surface overlay,
+      // then `--config`, then the user's), and a layer must be able to
+      // configure or disable a row an earlier layer inserted; without this,
+      // inserted rows were silently unpatchable.
+      buildMap(insert)
+      continue
+    }
+
+    if (!id) {
+      warn('patch: id is required for non-insert patches')
+      continue
+    }
+
+    const target = entryMap.get(id)
+    if (!target) {
+      warn('patch: entry %C not found', id)
+      continue
+    }
+
+    if (name && name !== target.name) {
+      warn('patch: name mismatch for %C (expected %C, got %C), skipping', id, target.name, name)
+      continue
+    }
+
+    for (const [key, value] of Object.entries(overrides)) {
+      if (key === 'id') continue
+      target[key] = value
+    }
+  }
+
+  return data
+}
+
 /** Runtime patch applied to entries loaded from an included config file. */
 export interface PatchOptions {
   id?: string
@@ -125,79 +219,9 @@ export class Include extends EntryTree {
   }
 
   private applyPatches(data: EntryOptions[], patches = this.config.patches): EntryOptions[] {
-    // Always detach from the cached parse: patching shared entry objects would
-    // bake earlier patch values into `this.data`, so repeated application
-    // (config hot-reloads) could never revert a removed or changed patch. The
-    // supported extensions guarantee JSON-safe plain data, so `structuredClone`
-    // cannot throw here.
-    if (!patches?.length) return [...data]
-    data = structuredClone(data)
-
-    const entryMap = new Map()
-    const buildMap = (entries: EntryOptions[]) => {
-      for (const entry of entries) {
-        if (entry.id) entryMap.set(entry.id, entry)
-        if (entry.group && Array.isArray(entry.config)) {
-          buildMap(entry.config)
-        }
-      }
-    }
-    buildMap(data)
-
-    for (const patch of patches) {
-      const { id, insert, name, ...overrides } = patch
-
-      if (insert) {
-        if (id) {
-          const target = entryMap.get(id)
-          if (!target) {
-            this.ctx.root.logger?.('loader').warn('patch insert: entry %C not found', id)
-            continue
-          }
-          if (!target.group) {
-            this.ctx.root.logger?.('loader').warn('patch insert: entry %C is not a group', id)
-            continue
-          }
-          if (!Array.isArray(target.config)) target.config = []
-          target.config.push(...insert)
-        } else {
-          data.push(...insert)
-        }
-        // Index what this patch added so a LATER patch in the same list can
-        // target it. Patch lists compose one layer per source (surface overlay,
-        // then `--config`, then the user's), and a layer must be able to
-        // configure or disable a row an earlier layer inserted; without this,
-        // inserted rows were silently unpatchable.
-        buildMap(insert)
-        continue
-      }
-
-      if (!id) {
-        this.ctx.root.logger?.('loader').warn('patch: id is required for non-insert patches')
-        continue
-      }
-
-      const target = entryMap.get(id)
-      if (!target) {
-        this.ctx.root.logger?.('loader').warn('patch: entry %C not found', id)
-        continue
-      }
-
-      if (name && name !== target.name) {
-        this.ctx.root.logger?.('loader').warn(
-          'patch: name mismatch for %C (expected %C, got %C), skipping',
-          id, target.name, name,
-        )
-        continue
-      }
-
-      for (const [key, value] of Object.entries(overrides)) {
-        if (key === 'id') continue
-        target[key] = value
-      }
-    }
-
-    return data
+    return applyEntryPatches(data, patches, (message, ...args) => {
+      this.ctx.root.logger?.('loader').warn(message, ...args)
+    })
   }
 
   async* [Service.init]() {


       {groups.map((group, i) => (
diff --git a/packages/client/ui-conversation/src/client/chat/ToolRow.module.css b/packages/client/ui-conversation/src/client/chat/ToolRow.module.css
index 030a6f0d80..44511ee03d 100644
--- a/packages/client/ui-conversation/src/client/chat/ToolRow.module.css
+++ b/packages/client/ui-conversation/src/client/chat/ToolRow.module.css
@@ -246,17 +246,29 @@
   color: var(--dsw-alias-state-error-primary);
 }
 
-/* The two block-shaped expanded bodies: the code variant's run_code program
-   through CodeBlock (shiki-highlighted TypeScript) and a terminal card's
-   command output through TerminalBlock. Both are drawn by the shared
-   primitive, so only the row's indentation is this file's concern — the margin
-   also replaces each primitive's own standalone vertical spacing with the
-   flow's row rhythm. */
+/* The block-shaped expanded bodies: the code variant's run_code program
+   through CodeBlock (shiki-highlighted TypeScript), a terminal card's command
+   output through TerminalBlock, and a search card's grouped matches or path
+   list through SearchBlock. All are drawn by the shared primitive, so only the
+   row's indentation is this file's concern — the margin also replaces each
+   primitive's own standalone vertical spacing with the flow's row rhythm. */
 .codeBody,
-.terminalBody {
+.terminalBody,
+.searchBody {
   margin: 4px 0 4px 4px;
 }
 
+/* The recovery footer for a capped search: the result text (its `Full … stored
+   at …` locator) below the card in the muted tone, since the card holds only the
+   retained rows. Same column indent as the card body. */
+.searchRecovery {
+  margin: 4px 0 4px 4px;
+  white-space: pre-wrap;
+  overflow-wrap: anywhere;
+  font: var(--dsw-font-xs-13);
+  color: var(--dsw-alias-label-tertiary);
+}
+
 /* A write/edit diff renders through DiffBlock; like the terminal card it draws
    its own surface, so only the row indentation is this file's concern. */
 .diffBody {
diff --git a/packages/client/ui-conversation/src/client/chat/ToolRow.tsx b/packages/client/ui-conversation/src/client/chat/ToolRow.tsx
index 40a5824ce3..95e14771d5 100644
--- a/packages/client/ui-conversation/src/client/chat/ToolRow.tsx
+++ b/packages/client/ui-conversation/src/client/chat/ToolRow.tsx
@@ -3,23 +3,25 @@
 // separator dot + FILL-truncated summary, drawn through the shared
 // DisclosureRow chrome with the whole row as the expand toggle (click /
 // Enter / Space, icon→chevron hover preview). The collapsed row is always
-// one line; every row with body, output, or terminal material is expandable;
-// the summary stays inline while open, except Think, whose body opens with
-// the same first line and would repeat it.
+// one line; every row with body, output, terminal, or search material is
+// expandable; the summary stays inline while open, except Think, whose body
+// opens with the same first line and would repeat it.
 // The expanded body — an IN/OUT gutter-labeled card (figma 1249:35657) for
-// text input/output, the run_code program through CodeBlock, or a terminal
-// card's command output through TerminalBlock — lives in a max-height scroll
-// container so a long payload scrolls internally instead of taking over the
-// message flow; Think's prose is the exception and flows uncapped like
-// message text. Expand state is component-local view state. File-tool
-// summaries are path links that open through the host (stopPropagation keeps
-// the two gestures independent); an error row's collapsed summary is the
+// text input/output, the run_code program through CodeBlock, a terminal
+// card's command output through TerminalBlock, or a search card's grouped
+// matches / path list through SearchBlock (capped at CHAT_SEARCH_MAX_LINES) —
+// lives in a max-height scroll container so a long payload scrolls internally
+// instead of taking over the message flow; Think's prose is the exception and
+// flows uncapped like message text. Expand state is component-local view state.
+// File-tool summaries are path links that open through the host (stopPropagation
+// keeps the two gestures independent); an error row's collapsed summary is the
 // failure's first line in the error color.
 
 import { useState, type MouseEvent, type ReactNode } from 'react'
 import clsx from 'clsx'
-import { CodeBlock, DiffBlock, StateDot, TerminalBlock } from '@deepseek-ai/dsh-client-ui-primitives'
+import { CodeBlock, DiffBlock, SearchBlock, StateDot, TerminalBlock } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { TranslateNS } from '@deepseek-ai/dsh-client-ui-slots'
+import { CHAT_SEARCH_MAX_LINES, type SearchCardModel } from '../contract/search-card-model.ts'
 import { CHAT_DIFF_MAX_LINES, type DiffCardModel } from '../contract/diff-card-model.ts'
 import { terminalBlockLabels, type TerminalCardModel } from '../contract/terminal-card-model.ts'
 import type { ToolRowState, ToolRowVariant } from '../contract/tool-call-model.ts'
@@ -49,10 +51,17 @@ export interface ToolRowProps {
    * expandable.
    */
   terminal?: TerminalCardModel | null | undefined
+  /**
+   * Search-card material for a call whose render intent is a search card
+   * (derived by `searchCardModel`); it replaces the text body when present.
+   * Null or absent leaves the text body. A call carries at most one card kind,
+   * so `terminal`, `search`, and `diff` are never both present on the same row.
+   */
+  search?: SearchCardModel | null | undefined
   /**
    * Diff-card material for a call whose render intent is a diff card (derived by
    * `diffCardModel`); it replaces the text body when present, the same way
-   * `terminal` does. A call carries at most one card intent, so the two are
+   * `terminal` does. A call carries at most one card intent, so the cards are
    * never both set.
    */
   diff?: DiffCardModel | null | undefined
@@ -103,6 +112,7 @@ export function ToolRow({
   output,
   errorSummary,
   terminal,
+  search,
   diff,
   state,
   filePath,
@@ -111,9 +121,12 @@ export function ToolRow({
 }: ToolRowProps) {
   const [expanded, setExpanded] = useState(false)
   const terminalBody = terminal ?? null
+  const searchBody = search ?? null
   const diffBody = diff ?? null
   const outputText = output ?? null
-  const expandable = body !== null || outputText !== null || terminalBody !== null || diffBody !== null
+  // A search or diff card replaces the text body; a call carries at most one
+  // card kind, so terminal, search, and diff are never both present on a row.
+  const expandable = body !== null || outputText !== null || terminalBody !== null || searchBody !== null || diffBody !== null
   const open = expanded && expandable
   // An error row's collapsed summary IS the failure: the first error line in
   // the error color outranks both the args summary and a terminal description.
@@ -185,40 +198,51 @@ export function ToolRow({
                 className={css.terminalBody}
               />
             )
-            : diffBody !== null
-              ? 
-              : isThink
-                ? 
{body}

-                : (
-                  <>
-                    {variant === 'code' && body !== null && (
-                      

-                        
-                      

-                    )}
-                    {(cardBody !== null || outputText !== null) && (
-                      

-                        {cardBody !== null && (
-                          

-                            IN
-                            {cardBody}
-                          

-                        )}
-                        {cardBody !== null && outputText !== null && (
-                          
-                        )}
-                        {outputText !== null && (
-                          

-                            OUT
-                            
-                              {outputText}
-                            
-                          

-                        )}
-                      

-                    )}
-                  
-                )}
+            : searchBody !== null
+              ? (
+                <>
+                  
+                  {/* A capped search's recovery locator lives only in the result
+                      text; show it below the card so the dropped rows survive. */}
+                  {searchBody.recovery !== undefined && (
+                    
{searchBody.recovery}

+                  )}
+                
+              )
+              : diffBody !== null
+                ? 
+                : isThink
+                  ? 
{body}

+                  : (
+                    <>
+                      {variant === 'code' && body !== null && (
+                        

+                          
+                        

+                      )}
+                      {(cardBody !== null || outputText !== null) && (
+                        

+                          {cardBody !== null && (
+                            

+                              IN
+                              {cardBody}
+                            

+                          )}
+                          {cardBody !== null && outputText !== null && (
+                            
+                          )}
+                          {outputText !== null && (
+                            

+                              OUT
+                              
+                                {outputText}
+                              
+                            

+                          )}
+                        

+                      )}
+                    
+                  )}
           {inspect !== undefined && (
             
+        ) : (
+          {model.summary}
+        )}
+