配置 Ant Design 组件为中文语言

通过添加 ConfigProvider 和 zhCN 语言包，将所有 antd 组件的文本显示为中文。这包括日期选择器、分页器、表格等组件的界面文本。

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

web/src/App.tsx

@@ -1,5 +1,7 @@
 import React from 'react'
 import { BrowserRouter as Router, Routes, Route } from 'react-router-dom'
+import { ConfigProvider } from 'antd'
+import zhCN from 'antd/locale/zh_CN'
 import TabBarLayout from './components/TabBarLayout'
 import ProtectedRoute from './components/ProtectedRoute'
 import AdminRoute from './components/AdminRoute'
@@ -13,6 +15,7 @@ import QuestionList from './pages/QuestionList'
 
 const App: React.FC = () => {
   return (
+    <ConfigProvider locale={zhCN}>
       <Router>
         <Routes>
           {/* 带TabBar的页面，需要登录保护 */}
@@ -39,6 +42,7 @@ const App: React.FC = () => {
           <Route path="/about" element={<About />} />
         </Routes>
       </Router>
+    </ConfigProvider>
   )
 }