hamid
82561c4cc6
Adds the province -> city -> district reference hierarchy (geo schema, seeded with 31 provinces + capital cities + Tehran's 22 districts), nurse service areas (district_id NULL = whole city, filtered-index-pair uniqueness -> 409), and encrypted, geocoded customer addresses with a single-primary invariant. Introduces the IGeocoder seam (mocked) and 409 Conflict on the result envelope. Public cascading lookups are cached behind a generation-token scheme with invalidate-on-admin-write. One EF migration (GeographyAddressesServiceAreas, applied). Contract + swagger snapshot + handoff/report/registry updated. 103 tests pass. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>