Add web multimodal image attachments

python/sdk-runtime/package.json

@@ -13,6 +13,7 @@
     "@deepseek-ai/dsh-agent-spine-demo": "workspace:^",
     "@deepseek-ai/dsh-agent-loop": "workspace:^",
     "@deepseek-ai/dsh-app-boot": "workspace:^",
+    "@deepseek-ai/dsh-attachment": "workspace:^",
     "@deepseek-ai/dsh-bash": "workspace:^",
     "@deepseek-ai/dsh-bash-local": "workspace:^",
     "@deepseek-ai/dsh-brand": "workspace:^",