升级到 PostgreSQL 并添加 Docker Compose 部署

主要更新：
- 替换 SQLite 为 PostgreSQL 数据库
- 添加 Docker Compose 配置文件
- 添加 Dockerfile 支持容器化部署
- 更新 README 添加详细的智能体注册指南
- 添加 .env.example 环境变量模板
- 修复 uuid 模块兼容性问题（降级到 9.x）
- 完善 API 文档和使用示例

package.json

@@ -1,19 +1,22 @@
 {
   "name": "agent-task-service",
   "version": "1.0.0",
-  "description": "",
-  "main": "index.js",
+  "description": "多智能体任务管理系统",
+  "main": "server-postgres.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "start": "node server-postgres.js",
+    "dev": "node server-postgres.js",
+    "sqlite": "node server.js"
   },
-  "keywords": [],
-  "author": "",
-  "license": "ISC",
+  "keywords": ["multi-agent", "task-management", "ai"],
+  "author": "work-1",
+  "license": "MIT",
   "dependencies": {
     "body-parser": "^2.2.2",
     "cors": "^2.8.6",
     "express": "^5.2.1",
+    "pg": "^8.18.0",
     "sqlite3": "^5.1.7",
-    "uuid": "^13.0.0"
+    "uuid": "^9.0.1"
   }
 }