feat: 前端 ESLint 规则增强，自动检测 LLM 编码违规

- 启用 TanStack Query flat/recommended（7 条规则）
- 新增 no-console（允许 warn/error）、consistent-type-imports（inline 风格）、no-non-null-assertion 规则
- 新增自定义规则 no-hardcoded-color-in-style，检测 JSX style 中硬编码颜色值
- 将 ESLint 检查集成到 build 命令（tsc -b && eslint . && vite build）
- 修复现有代码中的 lint 违规（import 顺序、type import 风格、unused vars）
- 使用 @typescript-eslint/rule-tester 编写自定义规则集成测试

frontend/eslint.config.js

@@ -5,9 +5,11 @@ 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'
+import localRules from './eslint-rules/index.js'
 
 export default tseslint.config(
   { ignores: ['dist'] },
+  ...tanstackQuery.configs['flat/recommended'],
   {
     extends: [js.configs.recommended, ...tseslint.configs.recommended],
     files: ['**/*.{ts,tsx}'],
@@ -20,6 +22,7 @@ export default tseslint.config(
       'react-refresh': reactRefresh,
       import: importPlugin,
       '@tanstack/query': tanstackQuery,
+      local: localRules,
     },
     rules: {
       ...reactHooks.configs.recommended.rules,
@@ -27,6 +30,13 @@ export default tseslint.config(
         'warn',
         { allowConstantExport: true },
       ],
+      'no-console': ['error', { allow: ['warn', 'error'] }],
+      '@typescript-eslint/consistent-type-imports': [
+        'error',
+        { prefer: 'type-imports', fixStyle: 'inline-type-imports' },
+      ],
+      '@typescript-eslint/no-non-null-assertion': 'error',
+      'local/no-hardcoded-color-in-style': 'warn',
       'import/order': [
         'warn',
         {
@@ -48,4 +58,13 @@ export default tseslint.config(
       ],
     },
   },
+  {
+    files: ['src/__tests__/**', 'e2e/**'],
+    rules: {
+      '@typescript-eslint/no-non-null-assertion': 'off',
+      'react-hooks/exhaustive-deps': 'off',
+      '@typescript-eslint/consistent-type-imports': 'off',
+      'no-console': 'off',
+    },
+  },
 )