Expand BWK nature data across Kempen

docs/CODEX_EXECUTION_LOG.md

@@ -8880,3 +8880,34 @@ Next:
   next implementation pass can focus on current-only nature/terrain/flood
   regional expansion or on a benchmarked data-refresh scheduler; it must not
   reinterpret these historical surfaces as modern object lineage.
+
+## Sprint 210 - Regional BWK/Natura 2000 expansion (2026-07-16)
+
+Implemented:
+- Added `provision_regional_bwk_natura2000.py` for the approved 28-municipality
+  Kempen transport-region scope, using the existing official INBO state-2025
+  source contract and governed Mol feature normalization.
+- Added per-municipality WFS pagination, exact EPSG:31370 clipping,
+  municipality-suffixed feature identities, deterministic gzip retention of
+  every exact source response and checksum-bound partition/snapshot reuse.
+- Kept one canonical regional Dataset upload behind DatasetService. No direct
+  `vector_features` write, migration, endpoint or fabricated time series was
+  introduced.
+- Made map theme selection prefer an exact selected-Area Dataset over a broader
+  compatible regional Dataset. Updated the source inventory to present
+  overlapping BWK snapshots as area coverages without double-counting their
+  feature totals.
+- Added focused tests for source evidence, GIS clipping, context fields,
+  regional assembly, semantic metrics, upload metadata, packaging and UI
+  selection behavior.
+
+Validation so far:
+- Focused BWK suites pass 11 tests.
+- Full local readiness passes backend compilation, 689 backend tests, API
+  contract audit, one Alembic head (`202607150001`), frontend typecheck/build
+  and script syntax gates.
+
+Open for this pass:
+- Deploy the validated operator to Tower, fetch and persist all 28 official
+  partitions, verify idempotency and PostGIS row/geometry/checksum consistency,
+  then validate complete-region and Mol map/metric behavior in the browser.

docs/DATA_SOURCES.md

@@ -445,3 +445,25 @@ Sprint 7B exposes provider metadata only. It does not perform GRB WFS calls, OSM
 | `fixture` | fixture | true | demo/test fixture layers | `dataset_role=reference`, `source_name=fixture` |
 
 Future provider output must flow through `DatasetService` and `VectorFeatureService`; providers must not write directly to `vector_features`.
+
+## Regional BWK/Natura 2000 state 2025
+
+`scripts/provision_regional_bwk_natura2000.py` expands the governed Mol
+operator to the approved 28-municipality Kempen transport-region scope. It
+queries the same official INBO `BWK:Bwkhab` WFS collection separately for each
+official VRBG municipality boundary. Every response is retained as a
+deterministic gzip artifact with both compressed-artifact and original-response
+SHA256 checksums.
+
+Geometry is intersected with each municipality in EPSG:31370 before it is
+transformed to EPSG:4326. Source polygons crossing a municipality boundary are
+therefore split into auditable pieces and receive a NIS suffix; those pieces
+must not be interpreted as independent source observations. The 28 validated
+partitions are assembled into one regional snapshot and persisted through the
+ordinary Dataset upload API with `source_name=inbo_bwk_natura2000`,
+`reference_layer_name=nature_value` and
+`temporal_series_key=inbo-bwk-natura2000:kempen-transport-region`.
+
+The state remains a single 2025 map edition, not an annual time series. BWK
+valuation, Natura 2000 shares, regional biotopes and uncertain habitat remain
+separate fields and metrics. PHAB-derived hectares remain explicitly estimated.

docs/STORAGE_ARCHITECTURE.md

@@ -238,3 +238,24 @@ parameters_json
 ## Local development default
 
 Use local filesystem paths. Keep MinIO/object storage as future extension.
+
+## Regional BWK/Natura 2000 evidence
+
+The regional state-2025 operator stores immutable evidence under:
+
+```text
+storage/operator-evidence/bwk-natura2000-2025/regional/
+  kempen-transport-region/partitions/{nis_code}/
+    raw/*.json.gz
+    bwk_natura2000_2025.geojson
+    manifest.json
+  snapshots/kempen-transport-region/
+    bwk_natura2000_2025.geojson
+    manifest.json
+```
+
+Partition reuse requires the same source version, municipality identity,
+boundary checksum, normalized output checksum and all raw evidence checksums.
+Snapshot reuse additionally binds the ordered set of 28 partition output
+checksums. Only the assembled snapshot enters DatasetService/PostGIS; raw WFS
+responses and partition files remain operator evidence on persistent storage.

docs/TODO.md

@@ -25,6 +25,7 @@
 - [x] Integrate governed Waterinfo/VMM annual station series without presenting point measurements as area-wide water volume.
 - [x] Add bounded historical orthophoto acquisition for official 1971-2025 products with a map overlay and no current-GRB QA on old imagery.
 - [x] Add BWK/Natura 2000 through an explicit provider/operator contract.
+- [x] Expand BWK/Natura 2000 state 2025 from Mol to all 28 approved Kempen municipalities with partitioned source evidence.
 - [x] Add annual agricultural-use parcels through an explicit provider/operator contract.
 - [x] Extend the official 1778/1873/1969 historical buildings, water and roads series from Mol to the approved regional scope with partitioned source audits.
 - [x] Connect a drawn rectangle to bounded official orthophoto acquisition, local configured-YOLO detection and persisted GRB QA.