- Extract rate limiter DRY: consolidate 3 duplicated check/respond paths
into _check_counter and _enforce_limit helpers, add proper type annotations
- Replace bare Exception raises with FloorplanDownloadError and
RightmoveApiError; narrow catch clauses to specific exception types;
fix Step base class to inherit from ABC
- Consolidate MAX_OCR_WORKERS into config/scraper_config.py; extract
_find_tenure_value helper to deduplicate tenure parsing
- Extract _build_poi_distances_lookup from stream endpoint to reduce nesting
- Fix csv_exporter: optional decisions.json, NaN instead of -1 sentinels,
guard against division by zero on missing square meters
- Fix notifications.py broken list[Surface]() constructor, database.py
stale comments and missing type annotation, auth.py type:ignore,
ui_exporter.py stale TODO
- Fix 3 pre-existing test failures: mock cache layer in streaming tests,
bypass rate limiter for test isolation, fix cache invalidation test to
account for two-pattern scan loop
- Fix task status IDOR by adding ownership check; suppress traceback/error in production
- Passkey routes: return generic error messages for internal exceptions, keep ValueError for user-facing
- JWT_SECRET and OIDC_CLIENT_ID: raise RuntimeError in production when using defaults
- Rate limiter: add in-memory fallback counter when Redis is unavailable
- Fix X-Forwarded-For IP spoofing with trusted_proxy_depth (rightmost-N selection)
- Add SecurityHeadersMiddleware (X-Content-Type-Options, X-Frame-Options, CSP, conditional HSTS)
- CORS: add PUT/DELETE methods for POI routes
- POI input validation: field length and coordinate range constraints
- QueryParameters: add min_sqm <= max_sqm validation
Per-user rate limits via Redis sliding window, IP-restricted /metrics
endpoint, audit logging of all requests, CORS tightening, and export
caps on listing/geojson endpoints.