feat(pstack): make /architect designs resist agent mistakes - #495

Bugbot Analysis Progress (2m 16s elapsed)

✅ Gathered PR context (1s)
✅ Completed bug detection (2m 15s)
✅ Posted analysis results (0s)

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

Request ID: 1bd16125-abff-4d9a-bb92-f29fc952e2f8