chore：春节装饰组件、依赖更新及日志优化

frontend/src/App.tsx

@@ -27,11 +27,14 @@ import Login from './pages/Login';
 import AuthCallback from './pages/AuthCallback';
 import ProtectedRoute from './components/ProtectedRoute';
 import AppFooter from './components/AppFooter';
+import SpringFestival from './components/SpringFestival';
 import './App.css';
 
 function App() {
   return (
     <ConfigProvider locale={zhCN}>
+      {/* 🧧 春节喜庆装饰 */}
+      <SpringFestival />
       <BrowserRouter
         future={{
           v7_startTransition: true,