管理后台初始化，登录，团队管理，报价单管理 完成

src/App.jsx

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+import React from 'react';
+import { BrowserRouter } from 'react-router-dom';
+import { ConfigProvider, theme } from 'antd';
+import { ThemeProvider } from './contexts/ThemeContext';
+import { AuthProvider } from './contexts/AuthContext';
+import AppRoutes from './routes/AppRoutes';
+import { useTheme } from './contexts/ThemeContext';
+
+const ThemedApp = () => {
+  const { isDarkMode } = useTheme();
+
+  return (
+    <ConfigProvider
+      theme={{
+        algorithm: isDarkMode ? theme.darkAlgorithm : theme.defaultAlgorithm,
+        token: {
+          colorPrimary: '#1677ff',
+          borderRadius: 4,
+          colorBgContainer: isDarkMode ? '#141414' : '#ffffff',
+          colorBgElevated: isDarkMode ? '#1f1f1f' : '#ffffff',
+          colorText: isDarkMode ? 'rgba(255, 255, 255, 0.85)' : 'rgba(0, 0, 0, 0.85)',
+          colorTextSecondary: isDarkMode ? 'rgba(255, 255, 255, 0.45)' : 'rgba(0, 0, 0, 0.45)',
+        },
+      }}
+    >
+      <div className={isDarkMode ? 'dark' : ''}>
+        <AppRoutes />
+      </div>
+    </ConfigProvider>
+  );
+};
+
+const App = () => {
+  return (
+    <BrowserRouter>
+      <AuthProvider>
+        <ThemeProvider>
+          <ThemedApp />
+        </ThemeProvider>
+      </AuthProvider>
+    </BrowserRouter>
+  );
+};
+
+export default App;