前端项目初始化，登录页支持暗色主题与禁止滑动

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/vite.config.ts

@@ -0,0 +1,31 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import path from 'path'
+
+export default defineConfig(({ mode }) => ({
+  plugins: [react()],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    },
+  },
+  server: {
+    host: '0.0.0.0',
+    port: 5173,
+    strictPort: true,
+    watch: {
+      usePolling: true,
+    },
+    proxy: {
+      '/api': {
+        target: process.env.VITE_API_BASE_URL || 'http://host.docker.internal:80',
+        changeOrigin: true,
+        secure: false,
+      },
+    },
+  },
+  build: {
+    outDir: 'dist',
+    sourcemap: mode !== 'production',
+  },
+}))