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

package.json

@@ -15,10 +15,28 @@
     "build:web": "bun run --filter=web build",
     "build:backend": "bun run --filter=backend build",
     "build:seq": "bun run build:backend && bun run build:web",
-    "lint": "concurrently -n 'backend,web' 'cd backend && bun run typecheck' 'cd web && bun run lint'"
+    "lint": "concurrently -n 'backend,web' 'cd backend && bun run lint' 'cd web && bun run lint'",
+    "lint:fix": "concurrently -n 'backend,web' 'cd backend && bun run lint:fix' 'cd web && bun run lint:fix'",
+    "format": "prettier --write .",
+    "typecheck": "concurrently -n 'backend,web' 'cd backend && bun run typecheck' 'cd web && bun run typecheck'"
   },
   "devDependencies": {
+    "@eslint/js": "^10.0.1",
+    "@types/bun": "^1.3.10",
+    "@types/node": "^25.4.0",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "bun-plugin-tailwind": "^0.1.2",
     "concurrently": "^9.2.1",
-    "typescript": "~5.9.3"
+    "eslint": "^10.0.3",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-react": "^7.37.5",
+    "eslint-plugin-react-hooks": "^7.0.1",
+    "eslint-plugin-react-refresh": "^0.5.2",
+    "globals": "^17.4.0",
+    "prettier": "^3.8.1",
+    "prettier-plugin-tailwindcss": "^0.7.2",
+    "typescript": "~5.9.3",
+    "typescript-eslint": "^8.57.0"
   }
-}
+}