feat: 新增隐私模式、全面的交易管理、预算与储蓄罐功能，并优化了整体用户界面和页面结构。

src/router/index.tsx

@@ -15,6 +15,7 @@ import TaxCalculatorPage from '../pages/TaxCalculatorPage';
 import Login from '../pages/Login/Login';
 import Profile from '../pages/Profile';
 import GitHubCallback from '../pages/GitHubCallback';
+import Notifications from '../pages/Notifications';
 import Layout from '../components/common/Layout';
 import ProtectedRoute from '../components/common/ProtectedRoute';
 
@@ -71,6 +72,10 @@ export const router = createBrowserRouter([
         path: 'reports',
         element: <Reports />,
       },
+      {
+        path: 'notifications',
+        element: <Notifications />,
+      },
       {
         path: 'exchange-rates',
         element: <ExchangeRates />,