diff --git a/apps/web/src/features/share/ShareCard.test.tsx b/apps/web/src/features/share/ShareCard.test.tsx
index 206bca1..80d5e21 100644
--- a/apps/web/src/features/share/ShareCard.test.tsx
+++ b/apps/web/src/features/share/ShareCard.test.tsx
@@ -186,6 +186,35 @@ describe('ShareCard', () => {
     expect(navigator.clipboard.writeText).not.toHaveBeenCalled()
   })
 
+  it('omits the share title when the transfer has no display name', async () => {
+    const shareMock = vi.fn(async () => {})
+    Object.assign(navigator, { share: shareMock })
+
+    render(
+      <MemoryRouter>
+        <ShareCard
+          transfer={createTransfer('active-3b', '', '2026-03-21T10:00:00.000Z')}
+          onExtendTransfer={extendTransferMock}
+        />
+      </MemoryRouter>,
+    )
+
+    await act(async () => {
+      await Promise.resolve()
+    })
+
+    fireEvent.click(screen.getByRole('button', { name: 'Share link' }))
+
+    await act(async () => {
+      await Promise.resolve()
+    })
+
+    expect(shareMock).toHaveBeenCalledWith({
+      text: 'Encrypted files via Xdrop',
+      url: 'https://example.com/t/active-3b#k=test',
+    })
+  })
+
   it('falls back to copying when the share sheet is unavailable', async () => {
     render(
       <MemoryRouter>
@@ -442,6 +471,31 @@ describe('ShareCard', () => {
     expect(screen.queryByText('Extend failed')).not.toBeInTheDocument()
   })
 
+  it('falls back to a generic message when extending fails with a non-Error', async () => {
+    extendTransferMock.mockRejectedValueOnce('boom')
+
+    render(
+      <MemoryRouter>
+        <ShareCard
+          transfer={createTransfer('active-8b', 'Extend transfer', '2026-03-21T10:00:00.000Z')}
+          onExtendTransfer={extendTransferMock}
+        />
+      </MemoryRouter>,
+    )
+
+    await act(async () => {
+      await Promise.resolve()
+    })
+
+    fireEvent.click(screen.getByRole('button', { name: /Set expiry to 1 week from now/i }))
+
+    await act(async () => {
+      await Promise.resolve()
+    })
+
+    expect(screen.getByText('Could not update this transfer right now.')).toBeInTheDocument()
+  })
+
   it('hides the extend action when local management is unavailable', async () => {
     render(
       <MemoryRouter>
@@ -519,4 +573,121 @@ describe('ShareCard', () => {
     expect(screen.queryByAltText('Transfer QR code')).not.toBeInTheDocument()
     expect(document.querySelector('.qr-placeholder')).not.toBeNull()
   })
+
+  it('clears a stale QR image when regenerating the same link fails later', async () => {
+    toDataUrlMock
+      .mockResolvedValueOnce('data:image/png;base64,first')
+      .mockRejectedValueOnce(new Error('QR failed'))
+
+    const { rerender } = render(
+      <MemoryRouter>
+        <ShareCard
+          transfer={createTransfer('active-5b', 'QR reset transfer', '2026-03-21T10:00:00.000Z')}
+          onExtendTransfer={extendTransferMock}
+        />
+      </MemoryRouter>,
+    )
+
+    await act(async () => {
+      await Promise.resolve()
+    })
+
+    expect(screen.getByAltText('Transfer QR code')).toHaveAttribute(
+      'src',
+      'data:image/png;base64,first',
+    )
+
+    rerender(
+      <MemoryRouter>
+        <ShareCard
+          transfer={createTransfer('active-5b', 'QR reset transfer', '2026-03-19T10:00:00.000Z')}
+          onExtendTransfer={extendTransferMock}
+        />
+      </MemoryRouter>,
+    )
+
+    rerender(
+      <MemoryRouter>
+        <ShareCard
+          transfer={createTransfer('active-5b', 'QR reset transfer', '2026-03-21T10:00:00.000Z')}
+          onExtendTransfer={extendTransferMock}
+        />
+      </MemoryRouter>,
+    )
+
+    await act(async () => {
+      await Promise.resolve()
+    })
+
+    expect(screen.queryByAltText('Transfer QR code')).not.toBeInTheDocument()
+    expect(document.querySelector('.qr-placeholder')).not.toBeNull()
+  })
+
+  it('shows the expired transfer error when one was saved locally', () => {
+    render(
+      <MemoryRouter>
+        <ShareCard
+          transfer={createTransfer('expired-2', 'Expired transfer', '2026-03-19T10:00:00.000Z', {
+            lastError: 'Upload stalled before expiry.',
+          })}
+        />
+      </MemoryRouter>,
+    )
+
+    expect(screen.getByText('Upload stalled before expiry.')).toBeInTheDocument()
+  })
+
+  it('ignores stale QR responses after the transfer changes', async () => {
+    let resolveFirstQr: ((value: string) => void) | undefined
+    let resolveSecondQr: ((value: string) => void) | undefined
+    toDataUrlMock
+      .mockImplementationOnce(
+        () =>
+          new Promise((resolve) => {
+            resolveFirstQr = resolve
+          }),
+      )
+      .mockImplementationOnce(
+        () =>
+          new Promise((resolve) => {
+            resolveSecondQr = resolve
+          }),
+      )
+
+    const { rerender } = render(
+      <MemoryRouter>
+        <ShareCard
+          transfer={createTransfer('active-old', 'Old transfer', '2026-03-21T10:00:00.000Z')}
+          onExtendTransfer={extendTransferMock}
+        />
+      </MemoryRouter>,
+    )
+
+    rerender(
+      <MemoryRouter>
+        <ShareCard
+          transfer={createTransfer('active-new', 'New transfer', '2026-03-21T10:00:00.000Z')}
+          onExtendTransfer={extendTransferMock}
+        />
+      </MemoryRouter>,
+    )
+
+    await act(async () => {
+      resolveFirstQr?.('data:image/png;base64,old')
+      await Promise.resolve()
+    })
+
+    expect(screen.queryByAltText('Transfer QR code')).not.toBeInTheDocument()
+    expect(document.querySelector('.qr-placeholder')).not.toBeNull()
+
+    await act(async () => {
+      resolveSecondQr?.('data:image/png;base64,new')
+      await Promise.resolve()
+    })
+
+    expect(screen.getByAltText('Transfer QR code')).toHaveAttribute(
+      'src',
+      'data:image/png;base64,new',
+    )
+  })
 })
diff --git a/apps/web/src/features/upload/TransferContext.actions.test.tsx b/apps/web/src/features/upload/TransferContext.actions.test.tsx
index 475761c..7793fb4 100644
--- a/apps/web/src/features/upload/TransferContext.actions.test.tsx
+++ b/apps/web/src/features/upload/TransferContext.actions.test.tsx
@@ -23,6 +23,7 @@ const {
   listTransfersMock,
   loadPersistedSourceFileMock,
   putSourcesMock,
+  persistSourceToOpfsMock,
   putTransferMock,
   registerFilesMock,
   resumeTransferMock,
@@ -100,6 +101,7 @@ const {
     loadPersistedSourceFileMock: vi.fn(
       async (source: PersistedSourceRecord) => source.file ?? null,
     ),
+    persistSourceToOpfsMock: vi.fn(async () => null),
     putSourcesMock: vi.fn(async (records: PersistedSourceRecord[]) => {
       for (const record of records) {
         sourceMap.set(record.key, record)
@@ -146,7 +148,7 @@ vi.mock('@/lib/files/persistentSources', () => ({
   createIndexedDbSourceRecord: createIndexedDbSourceRecordMock,
   deletePersistedTransferSources: deletePersistedTransferSourcesMock,
   loadPersistedSourceFile: loadPersistedSourceFileMock,
-  persistSourceToOpfs: vi.fn(async () => null),
+  persistSourceToOpfs: persistSourceToOpfsMock,
   supportsOpfsSourcePersistence: supportsOpfsSourcePersistenceMock,
 }))
 
@@ -325,6 +327,8 @@ describe('TransferProvider actions', () => {
     loadPersistedSourceFileMock.mockImplementation(
       async (source: PersistedSourceRecord) => source.file ?? null,
     )
+    persistSourceToOpfsMock.mockReset()
+    persistSourceToOpfsMock.mockResolvedValue(null)
     putSourcesMock.mockClear()
     putTransferMock.mockClear()
     registerFilesMock.mockReset()
@@ -404,6 +408,94 @@ describe('TransferProvider actions', () => {
     expect(deleteRemoteTransferMock).toHaveBeenCalledWith('t-created', 'manage-token')
   })
 
+  it('rejects source selections that exceed the app transfer limit before creating a transfer', async () => {
+    renderProvider()
+    await waitFor(() => expect(latestContext).not.toBeNull())
+
+    const oversizedFile = new File(['payload'], 'huge.bin', {
+      lastModified: 2,
+      type: 'application/octet-stream',
+    })
+    Object.defineProperty(oversizedFile, 'size', {
+      configurable: true,
+      value: 268_435_456,
+    })
+
+    await expect(
+      latestContext?.createTransfer(
+        [
+          {
+            file: oversizedFile,
+            relativePath: 'huge.bin',
+          },
+        ],
+        {
+          clearLocalSecretsOnReady: false,
+          displayName: 'Huge transfer',
+          expiresInSeconds: 3600,
+          stripMetadata: false,
+        },
+      ) ?? Promise.resolve(),
+    ).rejects.toThrow('The limit is 256 MiB per transfer.')
+
+    expect(createTransferApiMock).not.toHaveBeenCalled()
+  })
+
+  it('rejects prepared transfers that exceed the limit after smaller chunk sizing is applied', async () => {
+    renderProvider()
+    await waitFor(() => expect(latestContext).not.toBeNull())
+
+    createTransferApiMock.mockResolvedValueOnce({
+      expiresAt: '2026-03-21T08:00:00.000Z',
+      manageToken: 'manage-token',
+      transferId: 't-prepared-limit',
+      uploadConfig: { chunkSize: 1_048_576 },
+    })
+    supportsOpfsSourcePersistenceMock.mockReturnValueOnce(true)
+
+    const virtualLargeFile = new File(['payload'], 'virtual-large.bin', {
+      lastModified: 2,
+      type: 'application/octet-stream',
+    })
+    Object.defineProperty(virtualLargeFile, 'size', {
+      configurable: true,
+      value: 268_434_000,
+    })
+    persistSourceToOpfsMock.mockResolvedValueOnce({
+      fileId: 'file-1',
+      key: 'file-1:source',
+      lastModified: 2,
+      name: 'virtual-large.bin',
+      opfsPath: 't-prepared-limit/file-1.bin',
+      relativePath: 'virtual-large.bin',
+      size: 268_434_000,
+      storage: 'opfs',
+      transferId: 't-prepared-limit',
+      type: 'application/octet-stream',
+    } satisfies PersistedSourceRecord)
+
+    await expect(
+      latestContext?.createTransfer(
+        [
+          {
+            file: virtualLargeFile,
+            relativePath: 'virtual-large.bin',
+          },
+        ],
+        {
+          clearLocalSecretsOnReady: false,
+          displayName: 'Prepared limit transfer',
+          expiresInSeconds: 3600,
+          stripMetadata: false,
+        },
+      ) ?? Promise.resolve(),
+    ).rejects.toThrow('This transfer would upload')
+
+    expect(registerFilesMock).not.toHaveBeenCalled()
+    expect(deletePersistedTransferSourcesMock).toHaveBeenCalledWith('t-prepared-limit')
+    expect(deleteRemoteTransferMock).toHaveBeenCalledWith('t-prepared-limit', 'manage-token')
+  })
+
   it('extends saved transfers and blocks transfers without manage access', async () => {
     transfersStore.set('t1', makeTransferRecord('ready'))
 
@@ -458,6 +550,33 @@ describe('TransferProvider actions', () => {
     expect(deleteTransferRecordMock).not.toHaveBeenCalled()
   })
 
+  it('refreshes transfers in newest-first order', async () => {
+    transfersStore.set(
+      't-old',
+      makeTransferRecord('ready', {
+        createdAt: '2026-03-20T08:00:00.000Z',
+        id: 't-old',
+      }),
+    )
+    transfersStore.set(
+      't-new',
+      makeTransferRecord('ready', {
+        createdAt: '2026-03-20T09:00:00.000Z',
+        id: 't-new',
+      }),
+    )
+
+    renderProvider()
+
+    await waitFor(() => {
+      expect(screen.getByText('t-new:ready:none')).toBeInTheDocument()
+      expect(screen.getByText('t-old:ready:none')).toBeInTheDocument()
+    })
+
+    const transferRows = Array.from(document.querySelectorAll('p')).map((node) => node.textContent)
+    expect(transferRows.slice(0, 2)).toEqual(['t-new:ready:none', 't-old:ready:none'])
+  })
+
   it('marks interrupted uploads as failed when source files are missing', async () => {
     transfersStore.set('t1', makeTransferRecord('uploading'))
 
@@ -472,6 +591,24 @@ describe('TransferProvider actions', () => {
     })
   })
 
+  it('skips resume attempts when a recovered transfer is no longer saved locally', async () => {
+    listTransfersMock.mockResolvedValueOnce([
+      makeTransferRecord('paused', {
+        id: 'ghost',
+        lastError:
+          'This page was closed or refreshed. Upload will continue automatically when you return here in the same browser on this device.',
+      }),
+    ])
+
+    renderProvider()
+
+    await waitFor(() => {
+      expect(getTransferMock).toHaveBeenCalledWith('ghost')
+    })
+
+    expect(screen.queryByText(/ghost:/)).not.toBeInTheDocument()
+  })
+
   it('marks uploads as failed when hydrated source files disappear', async () => {
     transfersStore.set('t1', makeTransferRecord('uploading'))
     sourcesStore.set('t1:file-1', makeSourceRecord('t1'))
diff --git a/apps/web/src/features/upload/UploadStudio.test.tsx b/apps/web/src/features/upload/UploadStudio.test.tsx
index 1ab39ff..7bd89ff 100644
--- a/apps/web/src/features/upload/UploadStudio.test.tsx
+++ b/apps/web/src/features/upload/UploadStudio.test.tsx
@@ -232,6 +232,43 @@ describe('UploadStudio', () => {
     expect(await screen.findByText('restore failed')).toBeInTheDocument()
   })
 
+  it('avoids restoring draft state after unmount', async () => {
+    const restoredFile = new File(['hello'], 'draft.txt', { lastModified: 12, type: 'text/plain' })
+    let resolveDraft:
+      | ((value: {
+          settings: typeof draftState.settings
+          sources: typeof draftState.sources
+        }) => void)
+      | undefined
+    loadDraftMock.mockImplementationOnce(
+      () =>
+        new Promise((resolve) => {
+          resolveDraft = resolve
+        }),
+    )
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+
+    const { unmount } = renderStudio()
+    unmount()
+
+    await act(async () => {
+      resolveDraft?.({
+        settings: { ...draftState.settings, displayName: 'Recovered draft' },
+        sources: [
+          {
+            draftKey: 'draft-1',
+            file: restoredFile,
+            relativePath: 'draft.txt',
+          },
+        ],
+      })
+      await Promise.resolve()
+    })
+
+    expect(errorSpy).not.toHaveBeenCalled()
+    errorSpy.mockRestore()
+  })
+
   it('falls back to default messages for non-Error draft restoration and launch failures', async () => {
     loadDraftMock.mockRejectedValueOnce('boom')
 
@@ -250,6 +287,28 @@ describe('UploadStudio', () => {
     expect(await screen.findByText('Could not start the transfer.')).toBeInTheDocument()
   })
 
+  it('avoids surfacing draft restoration errors after unmount', async () => {
+    let rejectDraft: ((reason?: unknown) => void) | undefined
+    loadDraftMock.mockImplementationOnce(
+      () =>
+        new Promise((_, reject) => {
+          rejectDraft = reject
+        }),
+    )
+    const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+
+    const { unmount } = renderStudio()
+    unmount()
+
+    await act(async () => {
+      rejectDraft?.(new Error('restore failed'))
+      await Promise.resolve()
+    })
+
+    expect(errorSpy).not.toHaveBeenCalled()
+    errorSpy.mockRestore()
+  })
+
   it('starts a transfer with trimmed settings, clears the draft, and navigates', async () => {
     const { container } = renderStudio()
     const file = new File(['hello'], 'draft.txt', { lastModified: 12, type: 'text/plain' })
@@ -372,6 +431,10 @@ describe('UploadStudio', () => {
       target: { files: [persistedFile] },
     })
 
+    await waitFor(() => {
+      expect(persistDraftMock).toHaveBeenCalledTimes(1)
+    })
+
     unmount()
 
     await act(async () => {
@@ -407,6 +470,10 @@ describe('UploadStudio', () => {
       },
     })
 
+    await waitFor(() => {
+      expect(persistDraftMock).toHaveBeenCalledTimes(1)
+    })
+
     unmount()
 
     await act(async () => {