chore(ci): retire the public PII gate caller (backend#1409) - #466

Bugbot Analysis Progress (37s elapsed)

✅ Gathered PR context (2s)
✅ Completed bug detection (34s)
✅ Posted analysis results (1s)

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

Request ID: serverGenReqId_df26f1df-9f2d-4f98-912b-4854d9dcd563