feat: 完成前端重构，采用 Ant Design 5 和完整测试体系

- 采用 Ant Design 5 作为 UI 组件库，替换自定义组件
- 集成 React Router v7 提供路由导航
- 使用 TanStack Query v5 管理数据获取和缓存
- 建立 Vitest + React Testing Library 测试体系
- 添加 Playwright E2E 测试覆盖
- 使用 MSW mock API 响应
- 配置 TypeScript strict 模式
- 采用 SCSS Modules 组织样式
- 更新 OpenSpec 规格以反映前端架构变更
- 归档 frontend-refactor 变更记录

frontend/eslint.config.js

@@ -0,0 +1,51 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import tseslint from 'typescript-eslint'
+import importPlugin from 'eslint-plugin-import'
+import tanstackQuery from '@tanstack/eslint-plugin-query'
+
+export default tseslint.config(
+  { ignores: ['dist'] },
+  {
+    extends: [js.configs.recommended, ...tseslint.configs.recommended],
+    files: ['**/*.{ts,tsx}'],
+    languageOptions: {
+      ecmaVersion: 2023,
+      globals: globals.browser,
+    },
+    plugins: {
+      'react-hooks': reactHooks,
+      'react-refresh': reactRefresh,
+      import: importPlugin,
+      '@tanstack/query': tanstackQuery,
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      'react-refresh/only-export-components': [
+        'warn',
+        { allowConstantExport: true },
+      ],
+      'import/order': [
+        'warn',
+        {
+          groups: [
+            'builtin',
+            'external',
+            'internal',
+            'parent',
+            'sibling',
+            'index',
+            'type',
+          ],
+          'newlines-between': 'never',
+          alphabetize: { order: 'asc', caseInsensitive: true },
+          pathGroups: [
+            { pattern: '@/**', group: 'internal', position: 'before' },
+          ],
+        },
+      ],
+    },
+  },
+)