Initial commit: X-Server Mobile enterprise tool system

- Frontend: React 18 + TypeScript + Vite + Ant Design Mobile
- Backend: PHP 8.5 + Webman 2.x + MySQL + Redis
- i18n support: Chinese, English, Russian, Spanish, French
- Approval workflow engine
- Docker development environment
- Feishu integration

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/main.tsx

@@ -0,0 +1,25 @@
+import { StrictMode, useEffect } from 'react'
+import { createRoot } from 'react-dom/client'
+import { RouterProvider } from 'react-router-dom'
+import router from './router'
+import { initRem } from './utils/rem'
+import './i18n'
+import './index.css'
+
+// 初始化 rem 适配
+initRem()
+
+function App() {
+  useEffect(() => {
+    // 确保在 DOM 加载后再次设置
+    initRem()
+  }, [])
+
+  return <RouterProvider router={router} />
+}
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>
+)