feat: terminal-style prompt history for the chat composer - #4336

Bugbot Analysis Progress (5m 36s elapsed)

✅ Gathered PR context (6s)
✅ Completed bug detection (5m 26s)
✅ Posted analysis results (4s)

Final Result: Bugbot completed review - no new issues found. 3 previously reported issues remain unresolved.

Request ID: serverGenReqId_3c0e24d0-681a-4153-a728-c5c2a59f6f74