a2a-source-edit: write frontend/src/main.jsx

frontend/src/main.jsx

@@ -0,0 +1,10 @@
+import React from "react";
+import { createRoot } from "react-dom/client";
+import { App } from "./App.jsx";
+import "./style.css";
+
+createRoot(document.getElementById("root")).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+);