fix(map): stop hiding raster base and reset decks on projection switch

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

@@ -737,6 +737,11 @@ export function Map3D({
     const disposeMercatorOverlay = () => {
       const current = overlayRef.current;
       if (!current) return;
+      try {
+        current.setProps({ layers: [] } as never);
+      } catch {
+        // ignore
+      }
       try {
         map.removeControl(current as never);
       } catch {
@@ -783,18 +788,22 @@ export function Map3D({
       const currentProjection = extractProjectionType(map);
       const shouldSwitchProjection = currentProjection !== next;
 
+      if (projection === "globe") {
+        disposeMercatorOverlay();
+      } else {
+        disposeGlobeDeckLayer();
+      }
+
       try {
         if (shouldSwitchProjection) {
           map.setProjection({ type: next });
         }
         map.setRenderWorldCopies(next !== "globe");
-        if (shouldSwitchProjection) {
-          if (!cancelled && retries < maxRetries) {
+        if (shouldSwitchProjection && currentProjection !== next && !cancelled && retries < maxRetries) {
           retries += 1;
           window.requestAnimationFrame(() => syncProjectionAndDeck());
           return;
         }
-        }
       } catch (e) {
         if (!cancelled && retries < maxRetries) {
           retries += 1;
@@ -804,12 +813,6 @@ export function Map3D({
         console.warn("Projection switch failed:", e);
       }
 
-      const oldOverlay = overlayRef.current;
-      if (projection === "globe" && oldOverlay) {
-        // Globe mode uses custom MapLibre deck layers and should fully replace Mercator overlays.
-        disposeMercatorOverlay();
-      }
-
       if (projection === "globe") {
         // Start with a clean globe Deck layer state to avoid partially torn-down renders.
         disposeGlobeDeckLayer();
@@ -919,8 +922,7 @@ export function Map3D({
       if (!map.isStyleLoaded()) return;
       const disableBathyHeavy = projection === "globe" && baseMap === "enhanced";
       const visHeavy = disableBathyHeavy ? "none" : "visible";
-      const disableBaseMapSea = projection === "globe";
-      const seaVisibility = disableBaseMapSea ? "none" : "visible";
+      const seaVisibility = "visible" as const;
       const seaRegex = /(water|sea|ocean|river|lake|coast|bay)/i;
 
       // Globe + our injected bathymetry fill polygons can exceed MapLibre's per-segment vertex limit
@@ -940,8 +942,8 @@ export function Map3D({
         }
       }
 
-      // Vector basemap water/raster layers can flicker on globe with dense symbols/fills in this stack.
-      // Hide them only in globe mode and restore on return.
+      // Vector basemap water layers can be tuned per-style. Keep visible by default,
+      // only toggling layers that match an explicit water/sea signature.
       try {
         for (const layer of map.getStyle().layers || []) {
           const id = String(layer.id ?? "");
@@ -951,7 +953,7 @@ export function Map3D({
           const type = String((layer as { type?: unknown }).type ?? "").toLowerCase();
           const isSea = seaRegex.test(id) || seaRegex.test(sourceLayer) || seaRegex.test(source);
           const isRaster = type === "raster";
-          if (!isSea && !isRaster) continue;
+          if (!isSea) continue;
           if (!map.getLayer(id)) continue;
           if (isRaster && id === "seamark") continue;
           try {