- app.py: register /api/v1/vector-sync/purge only when vector_sync_enabled, so
it returns 404 (not a 500 from get_qdrant_client) when sync is off
- scanner: bound _consent_backstop_done so a long-running multi-tenant process
with user churn can't grow it without limit (clears on overflow)
- purge route: distinct 400 for a missing doc_types key; enforce the admin
check even for an empty no-op request (destructive route)
- tests: missing-key 400, admin-gated empty no-op, non-admin empty 403
The _consent_narrowed_doc_types precondition is enforced by its non-Optional
frozenset[str] signature (ty rejects a None caller). The httpx.BasicAuth
SonarCloud hotspot matches the existing webhook routes (false positive,
credential from the app-password store) — left consistent for UI triage.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
