fix(server): capture turn checkpoints after all edits finish - #9841

Bugbot Analysis Progress (3m 35s elapsed)

✅ Gathered PR context (9s)
✅ Completed bug detection (3m 19s)
✅ Posted analysis results (6s)

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

Request ID: serverGenReqId_380ceeab-77c2-4143-9cc4-f2b709d4b905