Add a Monaco code editor surface (cmux edit) - #5638

Bugbot Analysis Progress (2m 12s elapsed)

✅ Gathered PR context (4s)
✅ Completed bug detection (2m 7s)
✅ Posted analysis results (1s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_b4afec64-69cf-4215-a2c8-90a0dc46a103