The active tilemap layer can be renamed from the painting section, and a Show setting fades or hides the other layers in the scene view while the tilemap is selected (#138)

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/core/commands/tilemapCommands.ts

@@ -147,8 +147,10 @@ export class RenameTilemapLayerCommand implements Command {
 
   execute(project: Project): void {
     const layer = requireTilemapLayer(project, this.assetId, this.layerId);
+    const name = this.name.trim();
+    if (!name) throw new CommandError('A layer needs a name');
     this.previous = layer.name;
-    layer.name = this.name;
+    layer.name = name;
   }
 
   undo(project: Project): void {