refactor: standardize code formatting and linting configuration

- Replace .eslintrc.js with .eslintrc.cjs for better ES module compatibility
- Add .prettierrc configuration for consistent code formatting
- Update package.json with new lint and format scripts
- Add nodemon.json for development hot reloading configuration
- Standardize code formatting across all JavaScript and Vue files
- Update web admin SPA with improved linting rules and formatting
- Add prettier configuration to web admin SPA

🤖 Generated with [Claude Code](https://claude.ai/code)

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

.eslintrc.cjs

@@ -0,0 +1,86 @@
+module.exports = {
+  root: true,
+  env: {
+    node: true,
+    es2021: true,
+    commonjs: true
+  },
+  extends: ['eslint:recommended', 'plugin:prettier/recommended'],
+  parserOptions: {
+    sourceType: 'module',
+    ecmaVersion: 'latest'
+  },
+  plugins: ['prettier'],
+  rules: {
+    // 基础规则
+    'no-console': 'off', // Node.js 项目允许 console
+    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'warn',
+    'prettier/prettier': 'error',
+
+    // 变量相关
+    'no-unused-vars': [
+      'error',
+      {
+        argsIgnorePattern: '^_',
+        varsIgnorePattern: '^_',
+        caughtErrors: 'none'
+      }
+    ],
+    'prefer-const': 'error',
+    'no-var': 'error',
+    'no-shadow': 'error',
+
+    // 代码质量
+    eqeqeq: ['error', 'always'],
+    curly: ['error', 'all'],
+    'consistent-return': 'error',
+    'no-throw-literal': 'error',
+    'prefer-promise-reject-errors': 'error',
+
+    // 代码风格
+    'object-shorthand': 'error',
+    'prefer-template': 'error',
+    'template-curly-spacing': ['error', 'never'],
+
+    // Node.js 特定规则
+    'no-process-exit': 'error',
+    'no-path-concat': 'error',
+    'handle-callback-err': 'error',
+
+    // ES6+ 规则
+    'arrow-body-style': ['error', 'as-needed'],
+    'prefer-arrow-callback': 'error',
+    'prefer-destructuring': [
+      'error',
+      {
+        array: false,
+        object: true
+      }
+    ],
+
+    // 格式化规则（由 Prettier 处理）
+    semi: 'off',
+    quotes: 'off',
+    indent: 'off',
+    'comma-dangle': 'off'
+  },
+  overrides: [
+    {
+      // CLI 和脚本文件
+      files: ['cli/**/*.js', 'scripts/**/*.js'],
+      rules: {
+        'no-process-exit': 'off' // CLI 脚本允许 process.exit
+      }
+    },
+    {
+      // 测试文件
+      files: ['**/*.test.js', '**/*.spec.js', 'tests/**/*.js'],
+      env: {
+        jest: true
+      },
+      rules: {
+        'no-unused-expressions': 'off'
+      }
+    }
+  ]
+}