fix(geoportal): remove .pbf extension from Martin tile URLs

Martin v0.15.0 serves tiles at /{source}/{z}/{x}/{y} without .pbf
extension. Requests with .pbf returned 404.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/modules/geoportal/components/map-viewer.tsx

@@ -276,7 +276,7 @@ export const MapViewer = forwardRef<MapViewerHandle, MapViewerProps>(
         // --- UAT boundaries ---
         map.addSource(SOURCES.uats, {
           type: "vector",
-          tiles: [`${resolvedMartinUrl}/${SOURCES.uats}/{z}/{x}/{y}.pbf`],
+          tiles: [`${resolvedMartinUrl}/${SOURCES.uats}/{z}/{x}/{y}`],
           minzoom: 0,
           maxzoom: 16,
         });
@@ -324,7 +324,7 @@ export const MapViewer = forwardRef<MapViewerHandle, MapViewerProps>(
         // --- Terenuri (parcels) ---
         map.addSource(SOURCES.terenuri, {
           type: "vector",
-          tiles: [`${resolvedMartinUrl}/${SOURCES.terenuri}/{z}/{x}/{y}.pbf`],
+          tiles: [`${resolvedMartinUrl}/${SOURCES.terenuri}/{z}/{x}/{y}`],
           minzoom: 10,
           maxzoom: 18,
         });
@@ -356,7 +356,7 @@ export const MapViewer = forwardRef<MapViewerHandle, MapViewerProps>(
         // --- Cladiri (buildings) ---
         map.addSource(SOURCES.cladiri, {
           type: "vector",
-          tiles: [`${resolvedMartinUrl}/${SOURCES.cladiri}/{z}/{x}/{y}.pbf`],
+          tiles: [`${resolvedMartinUrl}/${SOURCES.cladiri}/{z}/{x}/{y}`],
           minzoom: 12,
           maxzoom: 18,
         });