- W-01: Wrap accept flow db.commit() in IntegrityError handler (409) - W-03: Remove refetchIntervalInBackground from unread count polling - W-04: detach_umbral_contact now clears all shared fields on Person - W-05: sf() callers no longer fall through via ?? to stale local data Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>