feat: add governed Mol nature value layer

docs/DATA_SOURCES.md

@@ -227,6 +227,27 @@ until a governed operator import, provenance record and validation pass exist.
   LiDAR, suitable for elevation, slope and drainage. It does not provide water
   depth.
 
+## Governed BWK and Natura 2000 state 2025
+
+`scripts/provision_mol_bwk_natura2000.py` uses the official production WFS
+`https://geo.api.vlaanderen.be/BWK/wfs`, feature type `BWK:Bwkhab`. It follows
+server `next` links and uses WFS `startIndex` only when a full page omits that
+link. A short final page is required for completeness. Raw response pages,
+request URLs and SHA256 checksums are retained.
+
+The source bbox is reduced to the exact persisted Mol Area in Belgian Lambert
+72. Only valid polygonal intersections are emitted, transformed back to
+EPSG:4326 and imported through DatasetService with `source_name` equal to
+`inbo_bwk_natura2000` and `reference_layer_name` equal to `nature_value`.
+Required attribution is `Bron: INBO`.
+
+`EVAL` classes are reported separately. Natura 2000 and regionally important
+biotope hectares use official `PHAB` shares; uncertain `ohab` polygons remain
+knowledge gaps. The official report warns that parts of the 2025 edition,
+especially outside Habitats Directive areas, can still be based on older
+mapping. GeoIntel therefore preserves origin fields and never presents this
+single edition as a historical trend.
+
 ## Governed Waterinfo station history
 
 `scripts/provision_waterinfo_station_history.py` uses the public Waterinfo