feat: 语言国际化重构

src/router/index.tsx

@@ -1,10 +1,11 @@
 import { Suspense, lazy, useEffect, type ReactNode } from 'react';
 import { Navigate, Route, Routes, useLocation, useNavigate } from 'react-router-dom';
 import MainLayout from '../components/layout/MainLayout';
+import { useI18n } from '../i18n';
 import LoginPage from '../pages/Login';
-import { DEFAULT_PATH } from './routes';
 import { RedirectAuthenticated, RequireAuth, isAuthenticated } from './auth';
 import { onAuthLogout } from './auth-session';
+import { DEFAULT_PATH } from './routes';
 
 const HomePage = lazy(() => import('../pages/Home'));
 const ChannelsPage = lazy(() => import('../pages/Channels'));
@@ -15,9 +16,11 @@ const SettingPage = lazy(() => import('../pages/Setting'));
 const KnowledgePage = lazy(() => import('../pages/Knowledge'));
 
 function RouteLoadingFallback() {
+  const { t } = useI18n();
+
   return (
     <div className="flex h-full min-h-0 w-full items-center justify-center bg-[#f6f9fc] text-sm text-[#99A0AE] dark:bg-[#0f0f10] dark:text-gray-500">
-      页面加载中...
+      {t('dashboard.route.loading')}
     </div>
   );
 }