feat: add governed Mol nature value layer

frontend/README.md

@@ -470,6 +470,12 @@ The workbench shell clamps page-level horizontal overflow on mobile while keepin
 
 The QA/QC result list includes client-side search, status and check-type filters plus a latest-results cap so long-lived demo projects remain scan-friendly without changing the API response shape.
 
+The current-state Map explorer includes `Natuurwaarde` when the governed INBO
+BWK/Natura 2000 state-2025 Dataset is loaded. It shows exact mapped BWK area,
+separate official value classes, PHAB-derived Natura 2000 and regional-biotope
+hectares, uncertain habitat knowledge gaps and source provenance. This single
+edition is not exposed as a fabricated annual series in Evolution.
+
 ## Useful repository scripts
 
 - `bash scripts/frontend_install.sh`

frontend/src/components/datasets/SourceCatalogPanel.tsx

@@ -8,6 +8,7 @@ const THEME_LABELS: Record<string, string> = {
   buildings: 'Bebouwing',
   population: 'Bevolking',
   forest: 'Bos',
+  nature_value: 'Natuurwaarde',
   water: 'Water',
   roads: 'Wegen en transport',
   parcels: 'Percelen',
@@ -103,9 +104,11 @@ export function SourceCatalogPanel({ datasets }: SourceCatalogPanelProps): JSX.E
       dataset.source_name === 'digitaal_vlaanderen_orthophoto' &&
       String(dataset.source_metadata?.['product_key'] ?? 'most_recent') !== 'most_recent',
   )
+  const bwkDatasets = ready.filter((dataset) => dataset.source_name === 'inbo_bwk_natura2000')
   const pendingSources = AVAILABLE_SOURCES.filter((source) => {
     if (source.key === 'waterinfo') return waterinfoDatasets.length === 0
     if (source.key === 'historical_orthophoto') return historicalOrthophotos.length === 0
+    if (source.key === 'bwk') return bwkDatasets.length === 0
     return true
   })
   const themes = Object.keys(THEME_LABELS).map((theme) => {
@@ -165,7 +168,7 @@ export function SourceCatalogPanel({ datasets }: SourceCatalogPanelProps): JSX.E
         ))}
       </div>
 
-      {waterinfoDatasets.length > 0 || historicalOrthophotos.length > 0 ? (
+      {waterinfoDatasets.length > 0 || historicalOrthophotos.length > 0 || bwkDatasets.length > 0 ? (
         <div className="source-catalog-loaded" aria-label="Aanvullende ingeladen bronnen">
           {waterinfoDatasets.length > 0 ? (
             <article>
@@ -181,6 +184,13 @@ export function SourceCatalogPanel({ datasets }: SourceCatalogPanelProps): JSX.E
               <p>Officiële jaargangen en periodes zijn via de kaart beschikbaar zonder actuele GRB-validatie.</p>
             </article>
           ) : null}
+          {bwkDatasets.length > 0 ? (
+            <article>
+              <strong>BWK / Natura 2000</strong>
+              <span>Toestand 2025 · {bwkDatasets.reduce((total, dataset) => total + (dataset.feature_count ?? 0), 0).toLocaleString('nl-BE')} kaartvlakken</span>
+              <p>Biologische waardering en habitataandelen blijven afzonderlijke, brongetrouwe metingen met herkomstinformatie.</p>
+            </article>
+          ) : null}
         </div>
       ) : null}
 

frontend/src/components/map/MapWorkspace.tsx

@@ -13,7 +13,7 @@ const EMPTY_TEMPORAL_SERIES: DatasetCreateResponse[] = []
 const MOL_PROJECT_NAME = 'Mol Municipality Workbench'
 const KEMPEN_PROJECT_NAME = 'Kempen Regional Workbench'
 
-type DataThemeId = 'buildings' | 'population' | 'forest' | 'water' | 'roads' | 'parcels'
+type DataThemeId = 'buildings' | 'population' | 'forest' | 'nature_value' | 'water' | 'roads' | 'parcels'
 
 interface DataTheme {
   id: DataThemeId
@@ -51,6 +51,13 @@ const DATA_THEMES: DataTheme[] = [
     description: 'Bos, natuur en groenbedekking uit een ingeladen vectorbron.',
     tokens: ['forest', 'forestry', 'woodland', 'bos', 'groen', 'vegetation'],
   },
+  {
+    id: 'nature_value',
+    label: 'Natuurwaarde',
+    shortLabel: 'BWK-oppervlakte',
+    description: 'Biologische waardering, Natura 2000-habitat en regionaal belangrijke biotopen uit de BWK.',
+    tokens: ['nature_value', 'nature value', 'natuurwaarde', 'bwk', 'natura2000', 'natura 2000', 'biodiversity'],
+  },
   {
     id: 'water',
     label: 'Water',
@@ -78,6 +85,7 @@ const DATA_THEME_MAP_STYLES: Record<DataThemeId, { fill: string; line: string }>
   buildings: { fill: '#d45f3d', line: '#9f3e24' },
   population: { fill: '#7559a6', line: '#5b3f88' },
   forest: { fill: '#347950', line: '#225f3b' },
+  nature_value: { fill: '#9a4f64', line: '#74364a' },
   water: { fill: '#2676a8', line: '#155b85' },
   roads: { fill: '#6b7280', line: '#4b5563' },
   parcels: { fill: '#a7792f', line: '#7d571f' },
@@ -111,6 +119,7 @@ function pickThemeDataset(datasets: DatasetCreateResponse[], theme: DataTheme):
       (dataset.reference_layer_name && theme.tokens.includes(dataset.reference_layer_name.toLowerCase()) ? 1_000_000 : 0) +
       (dataset.source_name === 'grb' ? 100_000 : 0) +
       (dataset.source_name === 'department_omgeving_land_use' ? 90_000 : 0) +
+      (dataset.source_name === 'inbo_bwk_natura2000' ? 95_000 : 0) +
       (dataset.dataset_role === 'reference' ? 10_000 : 0) +
       (dataset.observed_at ? new Date(dataset.observed_at).getTime() / 100_000_000 : 0) +
       (dataset.feature_count ?? dataset.vector_summary?.feature_count ?? 0)

frontend/src/styles/app.css

@@ -5753,6 +5753,7 @@ section {
 .geo-theme-symbol-buildings { background: #d45f3d; }
 .geo-theme-symbol-population { background: #7559a6; }
 .geo-theme-symbol-forest { background: #347950; }
+.geo-theme-symbol-nature_value { background: #9a4f64; }
 .geo-theme-symbol-water { background: #2676a8; }
 .geo-theme-symbol-roads { background: #6b7280; }
 .geo-theme-symbol-parcels { background: #a7792f; }