feat(web): notification (and sound) when a thread finish - #7348

Bugbot Analysis Progress (3m 47s elapsed)

✅ Gathered PR context (9s)
✅ Completed bug detection (3m 35s)
✅ Posted analysis results (3s)

Final Result: Bugbot completed review - no new issues found. 1 previously reported issue remain unresolved.

Request ID: serverGenReqId_58e1b7a9-8d48-4191-b69d-55da819f2e6c