Note

Low Risk
Low risk UI-only keyboard handling change in ChatView that reads prior user messages; main risk is minor UX edge cases around history bounds and pending-input states.

Overview
Adds terminal-style history navigation to the chat composer. Pressing ArrowUp cycles backward through previously sent user messages and ArrowDown moves forward, restoring the saved live draft when returning to index -1.

History state is kept in refs (historyIndexRef, savedDraftRef) and is reset whenever the composer is cleared (thread reset, normal send, plan follow-up submit, or standalone slash-command handling), and navigation is disabled while pending user-input progress is active.

^{Reviewed by Cursor Bugbot for commit 0ed3e22. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add terminal-style chat history navigation to the composer with ArrowUp/ArrowDown

• Adds ArrowUp/ArrowDown key handling in ChatView.tsx to navigate previously sent user messages in the active thread.
• Saves the in-progress draft when entering history mode and restores it when navigating back to index -1.
• Resets history state whenever the composer is cleared (after send, slash command, or thread cleanup).
• Navigation is disabled while activePendingProgress is truthy.

^{Macroscope summarized 0ed3e22.}