django-filter was already installed and set as DEFAULT_FILTER_BACKENDS
but unused everywhere. Replace hand-rolled get_queryset filtering with
FilterSet classes (stores/catalog/locations/reviews) and
filterset_fields (orders status). drf-spectacular auto-documents these
for swagger, so the manual OpenApiParameter declarations for the
migrated fields are removed (stores keeps lat/lng manual since
geo-distance isn't a plain filter).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
