feat: 添加管理后台页面和功能，优化测试和性能配置

refactor: 重构页面导航和滚动逻辑，提升用户体验

test: 更新测试配置和用例，增加覆盖率和稳定性

perf: 优化性能指标和阈值，适应开发环境需求

ci: 添加Lighthouse CI工作流，集成性能测试

docs: 更新API文档和健康检查端点

fix: 修复登录页面和表单提交问题

style: 调整响应式布局和可访问性改进

chore: 更新依赖项和脚本配置

e2e/playwright.config.admin.ts

@@ -0,0 +1,34 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './src/tests/admin',
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: 0,
+  workers: 4,
+  reporter: [
+    ['list'],
+    ['html', { open: 'never' }],
+  ],
+  timeout: 60000,
+  expect: {
+    timeout: 20000,
+  },
+  use: {
+    baseURL: 'http://localhost:3000',
+    trace: 'retain-on-failure',
+    screenshot: 'only-on-failure',
+    video: 'retain-on-failure',
+    headless: true,
+    viewport: { width: 1280, height: 720 },
+    actionTimeout: 20000,
+    navigationTimeout: 30000,
+    storageState: '../.auth/admin.json',
+  },
+  projects: [
+    {
+      name: 'admin-chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+  ],
+});