feat(parcel-sync): add building status layer to Harta tab (gis_cladiri_status)

Buildings now color-coded on legal status in ParcelSync map view:
- Blue fill: building has legal documents (build_legal = 1)
- Red fill: building without legal documents (build_legal = 0)

Previously only parcels had status coloring; buildings were plain blue.

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

src/modules/parcel-sync/components/tabs/map-tab.tsx

@@ -363,7 +363,67 @@ export function MapTab({ siruta, sirutaValid, sessionConnected, syncLocalCount,
       }
     }
 
-    // Buildings: keep base layer visible with siruta filter (already applied above)
+    // ── Enrichment overlay for BUILDINGS ──
+    if (!map.getSource("gis_cladiri_status")) {
+      map.addSource("gis_cladiri_status", {
+        type: "vector",
+        tiles: [`${martinBase}/gis_cladiri_status/{z}/{x}/{y}`],
+        minzoom: 14,
+        maxzoom: 18,
+      });
+
+      // Data-driven fill: red = no legal docs, blue = has legal docs
+      map.addLayer(
+        {
+          id: "l-ps-cladiri-fill",
+          type: "fill",
+          source: "gis_cladiri_status",
+          "source-layer": "gis_cladiri_status",
+          minzoom: 14,
+          filter,
+          paint: {
+            "fill-color": [
+              "case",
+              ["==", ["get", "build_legal"], 1],
+              "#3b82f6", // blue: legal docs OK
+              "#ef4444", // red: no legal docs
+            ],
+            "fill-opacity": 0.55,
+          },
+        },
+        "l-terenuri-fill",
+      );
+
+      map.addLayer(
+        {
+          id: "l-ps-cladiri-line",
+          type: "line",
+          source: "gis_cladiri_status",
+          "source-layer": "gis_cladiri_status",
+          minzoom: 14,
+          filter,
+          paint: {
+            "line-color": [
+              "case",
+              ["==", ["get", "build_legal"], 1],
+              "#1e40af", // dark blue: legal
+              "#b91c1c", // dark red: no legal
+            ],
+            "line-width": 1.5,
+          },
+        },
+        "l-terenuri-fill",
+      );
+    } else {
+      try {
+        if (map.getLayer("l-ps-cladiri-fill"))
+          map.setFilter("l-ps-cladiri-fill", filter);
+        if (map.getLayer("l-ps-cladiri-line"))
+          map.setFilter("l-ps-cladiri-line", filter);
+      } catch {
+        /* noop */
+      }
+    }
   }, [mapReady, siruta, sirutaValid]);
 
   /* ── Boundary cross-check: load mismatched parcels ─────────── */