feat(filetree): add filesystem watch support to WebContainer environment and auto-refresh file tree; improve icon handling and context menu behavior

ts_web/elements/dees-icon/dees-icon.ts

@@ -268,9 +268,9 @@ export class DeesIcon extends DeesElement {
         name: iconStr.substring(7) // Remove 'lucide:' prefix
       };
     } else {
-      // For backward compatibility, assume FontAwesome if no prefix
+      // Default to Lucide when no prefix is provided
       return {
-        type: 'fa',
+        type: 'lucide',
         name: iconStr
       };
     }