The chat surface now relies on the current-turn changes card for file rollback, so the older per-message hover rewind affordance was removed to avoid two competing rollback models.
Constraint: Current-turn undo still depends on the existing checkpoint rewind API.
Rejected: Keep both rewind entry points | duplicate rollback affordances make the product harder to explain and test.
Confidence: high
Scope-risk: moderate
Directive: Prefer adding rollback behavior through the current-turn change card instead of restoring per-message hover rewind.
Tested: bun test src/server/__tests__/sessions.test.ts
Tested: cd desktop && bun run test
Tested: cd desktop && bun run lint
Tested: cd desktop && bun run build
Not-tested: Browser E2E scripts were updated but not executed in this commit.
Completed desktop task bars were only being dismissed locally, which let the
persisted task list resurface on refresh or bleed into the next user turn.
This wires the existing server-side reset path into the desktop stores and
session flow so a finished task cycle is summarized once, cleared locally,
and removed remotely before the next round starts.
Constraint: Existing task persistence already lives behind the server task-list API and must stay compatible with persisted JSON task files
Rejected: Only hide the completed task bar in UI state | left stale persisted tasks behind and reintroduced them on reload
Rejected: Clear desktop state without a task summary | dropped useful completion context from the chat transcript
Confidence: high
Scope-risk: moderate
Reversibility: clean
Directive: Keep desktop task dismissal and task-list persistence behavior aligned; do not reintroduce local-only clearing without covering reload and next-turn flows
Tested: `cd desktop && bun run lint`
Tested: `cd desktop && bun run test src/stores/cliTaskStore.test.ts src/stores/chatStore.test.ts src/components/chat/SessionTaskBar.test.tsx src/components/chat/ComputerUsePermissionModal.test.tsx`
Tested: `bun test src/server/__tests__/e2e/business-flow.test.ts --test-name-pattern "Task Lists API"`
Not-tested: Full `bun test src/server/__tests__/e2e/business-flow.test.ts` suite still has unrelated pre-existing failures in Models and Sessions sections
Desktop sessions were missing a visible request_access approval path and could
mis-detect their own app window as an unapproved frontmost target, which caused
Computer Use clicks to fail even after opening the intended app. On macOS, text
entry was also split across inconsistent clipboard and keystroke paths, making
Electron inputs unreliable for Chinese and short strings.
This change adds a desktop approval bridge over the existing session websocket,
renders a dedicated desktop approval modal, threads the real desktop bundle id
into the Computer Use executor, and switches macOS clipboard typing onto the
native pasteboard plus system paste shortcut path. It also makes tool error
results expandable in the desktop chat UI so frontmost-gate failures are fully
visible during debugging.
Constraint: Desktop sessions run the CLI over the SDK websocket path, so Ink tool JSX dialogs are not visible there
Constraint: macOS IME and Electron text inputs are unreliable with pyautogui.write and generic hotkey synthesis
Rejected: Reuse CLI setToolJSX dialogs in desktop mode | no transport for mid-call Ink UI over the SDK bridge
Rejected: Keep shell pbcopy/pbpaste for clipboard typing | inconsistent with NSPasteboard path and less reliable for Chinese text
Confidence: medium
Scope-risk: moderate
Reversibility: clean
Directive: Keep desktop Computer Use approvals and macOS text-entry behavior on a single bridge/path; avoid reintroducing separate CLI-only and desktop-only codepaths for the same action
Tested: python3 -m unittest runtime/test_helpers.py
Tested: bun test src/utils/computerUse/permissions.test.ts src/server/__tests__/conversation-service.test.ts
Tested: cd desktop && bun run test ComputerUsePermissionModal chatStore
Tested: cd desktop && bun run test chatBlocks
Tested: cd desktop && bun run lint
Not-tested: End-to-end manual Computer Use interaction against a live Electron target app on macOS
