feat(desktop): improve Quick Choice keyboard navigation and history

[mapu-og]

Summary

• add keyboard navigation and numeric shortcuts to Desktop clarify / Quick Choice cards
• scope global shortcuts to the active clarify card so multiple cards cannot answer at once
• allow arrow navigation while the empty chat composer is focused, while preserving normal text-entry behavior once text exists
• preserve offered choices in the settled chat history behind a Quick Choice options disclosure
• serialize UI test files to avoid shared-state races in the full check suite

The backend/tool name remains clarify; Quick Choice is presentation-only.

Verification

• npm run test: 205 files passed, 1726 tests passed, 1 skipped
• npm run typecheck: passed
• npm run test:desktop:all: passed
• npm run check: passed in the separated verification run
• npx eslint src/components/assistant-ui/clarify-tool.tsx src/components/assistant-ui/clarify-tool.test.tsx: 0 errors (4 existing document warnings in tests)
• Desktop Linux unpacked artifact generated successfully

Testing notes

The isolated build was manually exercised with Quick Choice. Arrow navigation works with an empty composer without first clicking the card, Enter confirms the active choice, and the settled history exposes the offered options in a disclosure menu.

[tonydwb]

Code Review Summary

Verdict: Approved (read-only token — formal approval requires write access)

Improves Quick Choice keyboard navigation and history in the desktop app. Adds test coverage for clarify tool and keyboard interactions.

• Clean desktop UI improvement
• Good test additions for clarify-tool component
• No security concerns

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Reviewed by Hermes Agent