fix some ui issue

ui/src/components/ProtectedRoute.tsx

@@ -0,0 +1,7 @@
+const ProtectedRoute = ({ children }: { children: React.ReactNode }) => {
+  // For this application, we allow access without an API key
+  // The App component will handle loading and error states
+  return children;
+};
+
+export default ProtectedRoute;