feat: Tauri 2 + React 脚手架 — gui crate

gui/src-frontend/src/App.tsx

@@ -0,0 +1,9 @@
+export default function App() {
+  return (
+    <div className="h-screen flex items-center justify-center bg-gray-50 dark:bg-gray-950">
+      <h1 className="text-2xl font-bold text-gray-700 dark:text-gray-300">
+        🀫 QRGen GUI — 开发中
+      </h1>
+    </div>
+  );
+}

gui/src-frontend/src/index.css

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+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+body {
+  @apply bg-gray-50 text-gray-900 dark:bg-gray-950 dark:text-gray-100;
+  margin: 0;
+  overflow: hidden;
+  user-select: none;
+}
+
+#root {
+  height: 100vh;
+  display: flex;
+  flex-direction: column;
+}

gui/src-frontend/src/main.tsx

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+import React from "react";
+import ReactDOM from "react-dom/client";
+import App from "./App";
+import "./index.css";
+
+ReactDOM.createRoot(document.getElementById("root")!).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);

gui/src-frontend/src/vite-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />