Federate official Belgium data sources

backend/app/services/vector_feature_service.py

@@ -45,6 +45,19 @@ PRECLIPPED_MUNICIPALITY_PARTITION_OPERATOR_TOOLS = {
 
 
 SEMANTIC_SELECTION_METRICS: dict[str, tuple[dict[str, Any], ...]] = {
+    "administrative": (
+        {
+            "metric_key": "covered_area",
+            "method": "intersection_area",
+            "label": "Bestuurlijk ingedeelde oppervlakte",
+            "unit": "ha",
+            "geometry_dimension": 2,
+            "warning": (
+                "Dit is de doorsnede met één bestuurlijk schaalniveau uit de gekozen NGI-laag; "
+                "het is geen kadastrale of juridische grensopmeting."
+            ),
+        },
+    ),
     "buildings": (
         {
             "metric_key": "footprint_area",
@@ -113,9 +126,14 @@ SEMANTIC_SELECTION_METRICS: dict[str, tuple[dict[str, Any], ...]] = {
             "warning": "Historische bodemkartering op schaal 1:20.000; actuele lokale bodem- en drainagetoestand kan afwijken.",
         },
     ),
+    # Maritieme plan- en rapportagezones kunnen elkaar overlappen. Een
+    # opgetelde oppervlakte zou daarom geen unieke zeeoppervlakte voorstellen.
+    "maritime_planning": (),
+    "marine_environment": (),
 }
 
 SEMANTIC_COUNT_LABELS = {
+    "administrative": "Bestuursgebieden",
     "buildings": "Gebouwen",
     "population": "Statistische sectoren",
     "forest": "Bosvlakken",
@@ -125,6 +143,8 @@ SEMANTIC_COUNT_LABELS = {
     "nature_value": "BWK-kaartvlakken",
     "agriculture": "Landbouwgebruikspercelen",
     "soil": "Bodemkaartvlakken",
+    "maritime_planning": "Maritieme planobjecten",
+    "marine_environment": "Mariene rapportagezones",
 }
 
 # Sprint 205 initially normalized two official comma-separated ALZ group labels
@@ -157,6 +177,12 @@ class VectorFeatureService:
             source_metadata.get("layer_type"),
         )
         aliases = {
+            "belgium_land_boundary": "administrative",
+            "belgium_regions": "administrative",
+            "belgium_provinces": "administrative",
+            "belgium_municipalities": "administrative",
+            "marine_spatial_plan_2026": "maritime_planning",
+            "marine_legal_scopes": "marine_environment",
             "building": "buildings",
             "bebouwing": "buildings",
             "population": "population",