Record regional BWK live validation

CHANGELOG.md

@@ -17,8 +17,17 @@
 - Made map dataset selection prefer an exact Area snapshot over a broader
   compatible layer and changed the source inventory to report overlapping
   area snapshots without summing duplicate coverage.
+- Added a matching ORM/Alembic municipality expression index for fast regional
+  fallback selection; live Mol and Geel reads now complete in 0.989 and 0.529
+  seconds respectively.
+- Provisioned the live 28-municipality Dataset with 72,933 valid EPSG:4326
+  features from 147 retained source responses. Idempotency, checksums and the
+  single DatasetVersion were verified against PostGIS.
+- Live map results now expose 138,701.35 ha BWK-mapped surface, 6,580.43 ha
+  Natura 2000 habitat and the governed BWK value classes across the Kempen;
+  Mol continues to use its exact 4,668-feature snapshot.
 - Added focused GIS, persistence-contract, packaging and UI regression tests.
-  No API contract, database migration, AI model or product scope changed.
+  No API contract, AI model or product scope changed.
 
 ## Sprint 209 Regional historical land-use expansion (2026-07-15)