fix(geoportal): building labels — force overlap + delayed init

Labels were hidden by MapLibre collision detection with terrain
labels. Now using text-allow-overlap + text-ignore-placement to
force visibility. Also added retry with setTimeout in case source
isn't ready when layer is first added.

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

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

@@ -441,21 +441,26 @@ export const MapViewer = forwardRef<MapViewerHandle, MapViewerProps>(
           paint: { "line-color": "#1e3a5f", "line-width": 0.6 } });
         // Building body labels (C1, C2...) — visible at high zoom
         // cadastral_ref = "77102-C1" → display "C1"
+        {
+          // Add after a small delay to ensure the style is fully loaded
+          // and the source has been registered
+          const addBuildingLabels = () => {
+            try {
+              if (map.getLayer(LAYER_IDS.cladiriLabel)) return;
               map.addLayer({
                 id: LAYER_IDS.cladiriLabel,
                 type: "symbol",
                 source: SOURCES.cladiri,
                 "source-layer": SOURCES.cladiri,
-          minzoom: 16,
+                minzoom: 17,
                 filter: ["has", "cadastral_ref"],
                 layout: {
-            // Simple approach: show full cadastral_ref, let the user see "77102-C1"
-            // MapLibre will auto-hide overlapping labels
                   "text-field": ["get", "cadastral_ref"],
                   "text-font": ["Noto Sans Regular"],
-            "text-size": 10,
+                  "text-size": 9,
                   "text-anchor": "center",
-            "text-allow-overlap": false,
+                  "text-allow-overlap": true,
+                  "text-ignore-placement": true,
                 },
                 paint: {
                   "text-color": "#1e3a8a",
@@ -463,6 +468,14 @@ export const MapViewer = forwardRef<MapViewerHandle, MapViewerProps>(
                   "text-halo-width": 1.5,
                 },
               });
+            } catch (e) {
+              console.warn("[map] building labels failed:", e);
+            }
+          };
+          // Try immediately, retry after 2s if source not ready
+          try { addBuildingLabels(); } catch { /* */ }
+          setTimeout(addBuildingLabels, 2000);
+        }
 
         // === Selection highlight ===
         map.addLayer({ id: LAYER_IDS.selectionFill, type: "fill", source: SOURCES.terenuri, "source-layer": SOURCES.terenuri, minzoom: 13,