fix: eliminate white screen on startup

- Main window starts hidden (visible: false), shown after frontend ready
- Remove React.StrictMode to reduce initial render overhead
- Add loading spinner during app initialization
- Use Promise.all + requestIdleCallback to optimize startup timing

tauri-app/src-tauri/tauri.conf.json

@@ -19,7 +19,7 @@
         "minWidth": 960,
         "minHeight": 640,
         "resizable": true,
-        "visible": true
+        "visible": false
       }
     ],
     "security": {

tauri-app/src/App.css

@@ -1,3 +1,36 @@
+.app-loading {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  width: 100vw;
+  height: 100vh;
+  background: #ffffff;
+  gap: 24px;
+}
+
+.app-loading-spinner {
+  width: 40px;
+  height: 40px;
+  border: 3px solid #e8e8e8;
+  border-top-color: #1a9e8a;
+  border-radius: 50%;
+  animation: app-loading-spin 0.8s linear infinite;
+}
+
+@keyframes app-loading-spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.app-loading-text {
+  font-size: 16px;
+  font-weight: 500;
+  color: #1a9e8a;
+  letter-spacing: 2px;
+}
+
 .app-layout {
   display: flex;
   height: 100vh;

tauri-app/src/App.tsx

@@ -69,16 +69,22 @@ function App() {
   const [currentPage, setCurrentPage] = useState<PageType>('video-creation');
   const [showLogoutConfirm, setShowLogoutConfirm] = useState(false);
   const [appEnvironment, setAppEnvironment] = useState<string>('production');
+  const [isReady, setIsReady] = useState(false);
 
   // 应用启动时加载配置和认证状态
   useEffect(() => {
-    loadAppConfig()
-      .then(config => {
-        setApiBaseUrl(config.apiBaseUrl);
-        setAppEnvironment(config.environment);
-      })
-      .catch(console.error);
-    loadFromStorage().catch(console.error);
+    Promise.all([
+      loadAppConfig()
+        .then(config => {
+          setApiBaseUrl(config.apiBaseUrl);
+          setAppEnvironment(config.environment);
+        })
+        .catch(console.error),
+      loadFromStorage().catch(console.error),
+    ]).finally(() => {
+      // 确保至少显示 300ms 加载态，避免闪屏
+      setTimeout(() => setIsReady(true), 300);
+    });
   }, [loadFromStorage]);
 
   // 固定浅色模式
@@ -109,6 +115,15 @@ function App() {
     setCurrentPage(page as PageType);
   };
 
+  if (!isReady) {
+    return (
+      <div className="app-loading">
+        <div className="app-loading-spinner" />
+        <div className="app-loading-text">美家卡智影</div>
+      </div>
+    );
+  }
+
   return (
     <>
       {/* Toast 全局挂载 - 不受登录状态影响 */}

tauri-app/src/main.tsx

@@ -16,10 +16,30 @@ document.addEventListener('contextmenu', (e) => {
   }
 });
 
-ReactDOM.createRoot(document.getElementById('root') as HTMLElement).render(
-  <React.StrictMode>
-    <BrowserRouter>
-      <App />
-    </BrowserRouter>
-  </React.StrictMode>
+const root = ReactDOM.createRoot(document.getElementById('root') as HTMLElement);
+
+root.render(
+  <BrowserRouter>
+    <App />
+  </BrowserRouter>
 );
+
+// 前端渲染完成后，通知 Tauri 显示主窗口
+// 使用 requestIdleCallback 确保首帧已绘制
+const showWindow = () => {
+  import('@tauri-apps/api/webviewWindow')
+    .then(({ getCurrentWebviewWindow }) => {
+      const win = getCurrentWebviewWindow();
+      win.show();
+      win.setFocus();
+    })
+    .catch(() => {
+      // 非 Tauri 环境（如浏览器开发）忽略
+    });
+};
+
+if ('requestIdleCallback' in window) {
+  requestIdleCallback(showWindow, { timeout: 500 });
+} else {
+  setTimeout(showWindow, 100);
+}