feat: add restore to task start button

[hannesrudolph]

Summary

Adds a button in the task header that allows users to restore the workspace to its initial state when the task was created. This uses the baseHash checkpoint created during shadow git initialization.

Changes

Backend

• Add checkpointRestoreToBase(task) function in src/core/checkpoints/index.ts
• Add restoreToTaskStart message handler in src/core/webview/webviewMessageHandler.ts
• Add restoreToTaskStart message type to packages/types/src/vscode-extension-host.ts
• Add 4 unit tests for the new checkpoint restore function
• Add error message translations for all 17 locales

Frontend

• Add RestoreTaskDialog confirmation dialog component
• Add restore button (↺) to TaskActions (visible only when checkpoints enabled)
• Add dialog translations for all 17 locales

User Experience

The button appears in the expanded task header. Clicking it shows a confirmation dialog:

Restore workspace to task start
This will reset all files in the workspace to their state when this task was created. Changes made by this task, by other tasks, or manually will all be reverted. This action cannot be undone.

Testing

• All 29 checkpoint tests pass including 4 new tests for checkpointRestoreToBase
• All 5104 total tests pass

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Important

Adds a feature to restore the workspace to its initial state at task creation, with backend and frontend support, including translations and tests.

• Behavior:
  • Adds a button in the task header to restore the workspace to its initial state using baseHash checkpoint.
  • Confirmation dialog warns that this action cannot be undone.
• Backend:
  • Adds checkpointRestoreToBase(task) in index.ts to restore workspace to initial state.
  • Adds restoreToTaskStart message handler in webviewMessageHandler.ts.
  • Adds restoreToTaskStart message type in vscode-extension-host.ts.
  • Adds 4 unit tests for checkpointRestoreToBase.
• Frontend:
  • Adds RestoreTaskDialog component for confirmation dialog.
  • Adds restore button to TaskActions (visible when checkpoints enabled).
• Translations:
  • Adds dialog and error message translations for 17 locales.
• Testing:
  • All 29 checkpoint tests pass, including 4 new tests for checkpointRestoreToBase.
  • All 5104 total tests pass.

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[roomote]

Oroocle   Follow along on Roo Cloud

Review status: resolved.

• Avoid triggering destructive restore action on any Enter keypress while dialog is open (limit to focused action button or remove global key listener).

Previous reviews

• 9142841: Review #1

_{Mention @roomote in a comment to request specific changes to this pull request or fix all unresolved issues.}

[roomote]

Using a global Enter key listener to trigger the destructive restore action means pressing Enter anywhere while the dialog is open will restore immediately, even if focus is on Cancel. This makes accidental restores much more likely; it is safer to rely on the focused button/AlertDialogAction behavior (or only trigger on Enter when the Restore button is focused).

_{Fix it with Roo Code or mention @roomote and request a fix.}

[hannesrudolph]

@roomote are you saying enter should select cancel instead of confirming?

[roomote]

Fixaroo   See task on Roo Cloud

Fixed the reported issue by removing the global Enter key listener. The AlertDialog's default behavior will now only trigger the restore action when the Restore button is focused. All local checks passed.

_{View commit | Revert commit}