fix: guard map style and ship layer ids during rendering

apps/web/src/widgets/map3d/Map3D.tsx

@@ -189,6 +189,12 @@ const MAP_DEFAULT_SHIP_RGB: [number, number, number] = [100, 116, 139];
 
 const clampNumber = (value: number, minValue: number, maxValue: number) => Math.max(minValue, Math.min(maxValue, value));
 
+function getLayerId(value: unknown): string | null {
+  if (!value || typeof value !== "object") return null;
+  const candidate = (value as { id?: unknown }).id;
+  return typeof candidate === "string" ? candidate : null;
+}
+
 function normalizeAngleDeg(value: number, offset = 0): number {
   const v = value + offset;
   return ((v % 360) + 360) % 360;
@@ -676,7 +682,11 @@ function injectOceanBathymetryLayers(style: StyleSpecification, maptilerKey: str
   } as unknown as LayerSpecification;
 
   // Insert before the first symbol layer (keep labels on top), otherwise append.
-  const layers = style.layers as LayerSpecification[];
+  const rawLayers = Array.isArray(style.layers) ? style.layers : [];
+  const layers = rawLayers.filter((layer): layer is LayerSpecification => {
+    if (!layer || typeof layer !== "object") return false;
+    return typeof (layer as { id?: unknown }).id === "string";
+  });
   const symbolIndex = layers.findIndex((l) => l.type === "symbol");
   const insertAt = symbolIndex >= 0 ? symbolIndex : layers.length;
 
@@ -1077,7 +1087,8 @@ export function Map3D({
     projectionRef.current = projection;
   }, [projection]);
 
-  const removeLayerIfExists = useCallback((map: maplibregl.Map, layerId: string) => {
+  const removeLayerIfExists = useCallback((map: maplibregl.Map, layerId: string | null | undefined) => {
+    if (!layerId) return;
     try {
       if (map.getLayer(layerId)) {
         map.removeLayer(layerId);
@@ -1218,9 +1229,10 @@ export function Map3D({
       onMapStyleReady(map, () => {
         applyProjection();
         // Globe deck layer lives inside the style and must be re-added after any style swap.
-        if (projectionRef.current === "globe" && globeDeckLayerRef.current && !map!.getLayer(globeDeckLayerRef.current.id)) {
+        const deckLayer = globeDeckLayerRef.current;
+        if (projectionRef.current === "globe" && deckLayer && !map!.getLayer(deckLayer.id)) {
           try {
-            map!.addLayer(globeDeckLayerRef.current);
+            map!.addLayer(deckLayer);
           } catch {
             // ignore
           }
@@ -1431,13 +1443,14 @@ export function Map3D({
         }
 
         const layer = globeDeckLayerRef.current;
-        if (layer && map.isStyleLoaded() && !map.getLayer(layer.id)) {
+        const layerId = layer?.id;
+        if (layer && layerId && map.isStyleLoaded() && !map.getLayer(layerId)) {
           try {
             map.addLayer(layer);
           } catch {
             // ignore
           }
-          if (!map.getLayer(layer.id) && !cancelled && retries < maxRetries) {
+          if (!map.getLayer(layerId) && !cancelled && retries < maxRetries) {
             retries += 1;
             window.requestAnimationFrame(() => syncProjectionAndDeck());
             return;
@@ -1554,7 +1567,7 @@ export function Map3D({
         const style = map.getStyle();
         const styleLayers = style && Array.isArray(style.layers) ? style.layers : [];
         for (const layer of styleLayers) {
-          const id = String(layer.id ?? "");
+          const id = getLayerId(layer);
           if (!id) continue;
           const sourceLayer = String((layer as Record<string, unknown>)["source-layer"] ?? "").toLowerCase();
           const source = String((layer as { source?: unknown }).source ?? "").toLowerCase();
@@ -1933,7 +1946,7 @@ export function Map3D({
         console.warn("Ship icon image setup failed:", e);
       }
 
-      const globeShipData = targets.filter((t) => isFiniteNumber(t.lat) && isFiniteNumber(t.lon));
+      const globeShipData = shipData;
       const geojson: GeoJSON.FeatureCollection<GeoJSON.Point> = {
         type: "FeatureCollection",
         features: globeShipData.map((t) => {
@@ -1956,7 +1969,7 @@ export function Map3D({
           const iconSize14 = clampNumber(0.72 * sizeScale * selectedScale, 0.45, 2.1);
           return {
             type: "Feature",
-            id: t.mmsi,
+            ...(isFiniteNumber(t.mmsi) ? { id: Math.trunc(t.mmsi) } : {}),
             geometry: { type: "Point", coordinates: [t.lon, t.lat] },
             properties: {
               mmsi: t.mmsi,
@@ -2890,7 +2903,7 @@ export function Map3D({
   }, [projection, overlays.pairRange, pairLinks, mapSyncEpoch, hoveredShipSignature, hoveredPairSignature, hoveredFleetSignature, isHighlightedPair]);
 
   const shipData = useMemo(() => {
-    return targets.filter((t) => isFiniteNumber(t.lat) && isFiniteNumber(t.lon));
+    return targets.filter((t) => isFiniteNumber(t.lat) && isFiniteNumber(t.lon) && isFiniteNumber(t.mmsi));
   }, [targets]);
 
   const shipByMmsi = useMemo(() => {