chore: 统一代码格式并配置开发工具

- 添加 ESLint 和 Prettier 配置以统一代码风格
- 配置项目级 TypeScript 设置
- 更新前后端依赖版本
- 修复代码格式问题（引号、分号、尾随逗号等）
- 优化文件结构和导入路径

eslint.config.js

@@ -0,0 +1,54 @@
+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 react from 'eslint-plugin-react'
+import prettier from 'eslint-config-prettier'
+
+export default tseslint.config(
+  {
+    ignores: [
+      'dist',
+      'node_modules',
+      '.cursor',
+      '.trae',
+      'backend/prisma/migrations',
+    ],
+  },
+  {
+    extends: [
+      js.configs.recommended,
+      ...tseslint.configs.recommended,
+      prettier,
+    ],
+    files: ['**/*.{ts,tsx}'],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: {
+        ...globals.browser,
+        ...globals.node,
+        ...globals.es2020,
+      },
+    },
+    plugins: {
+      'react-hooks': reactHooks,
+      'react-refresh': reactRefresh,
+      react,
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      'react-refresh/only-export-components': [
+        'warn',
+        { allowConstantExport: true },
+      ],
+      'react/jsx-uses-react': 'off',
+      'react/react-in-jsx-scope': 'off',
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        { argsIgnorePattern: '^_' },
+      ],
+      '@typescript-eslint/no-explicit-any': 'error',
+    },
+  },
+)