Create src/App.jsx

src/App.jsx

@@ -0,0 +1,9 @@
+export default function App() {
+  return (
+    <div className="flex h-screen items-center justify-center bg-gradient-to-br from-indigo-100 to-gray-100">
+      <h1 className="text-3xl font-bold text-indigo-600">
+        🚀 Custom GPT Schema Generator
+      </h1>
+    </div>
+  );
+}