fix: accept regional layer CLI lists

scripts/provision_regional_grb_context.py

@@ -112,7 +112,12 @@ LAYER_BY_KEY = {definition.key: definition for definition in LAYERS}
 def parse_args() -> argparse.Namespace:
     parser = argparse.ArgumentParser(description="Provision municipality-partitioned regional GRB context layers.")
     parser.add_argument("--scope", choices=sorted(GEOGRAPHIC_SCOPES), default=DEFAULT_SCOPE_KEY)
-    parser.add_argument("--layers", default=",".join(LAYER_BY_KEY), help="Comma-separated subset: roads,water,parcels")
+    parser.add_argument(
+        "--layers",
+        nargs="+",
+        default=list(LAYER_BY_KEY),
+        help="Space- or comma-separated subset: roads water parcels",
+    )
     parser.add_argument("--observed-date", type=date.fromisoformat, default=date.today())
     parser.add_argument("--base-url", default=os.environ.get("GEOINTEL_INTERNAL_API_URL", DEFAULT_API_URL))
     parser.add_argument(
@@ -131,8 +136,14 @@ def parse_args() -> argparse.Namespace:
     return parser.parse_args()
 
 
-def selected_definitions(raw_layers: str) -> list[LayerDefinition]:
-    requested = {item.strip().lower() for item in raw_layers.split(",") if item.strip()}
+def selected_definitions(raw_layers: str | list[str]) -> list[LayerDefinition]:
+    values = [raw_layers] if isinstance(raw_layers, str) else raw_layers
+    requested = {
+        item.strip().lower()
+        for value in values
+        for item in value.split(",")
+        if item.strip()
+    }
     unknown = requested - set(LAYER_BY_KEY)
     if unknown or not requested:
         raise ValueError(f"Unsupported layers: {sorted(unknown)}")