feat: 新增睿美云对接模块

- 扩展 ToolConfig 配置类型，新增 external_api 类型
- 实现接口注册表，包含 90+ 睿美云开放接口定义
- 实现 TPOS SHA256WithRSA 签名鉴权
- 实现睿美云 API 客户端，支持多租户配置
- 新增代理路由 /api/ruimeiyun/call/{api_name}
- 支持接口权限控制和健康检查

backend/requirements.txt

@@ -1,15 +1,15 @@
-fastapi>=0.109.0
-uvicorn>=0.27.0
-sqlalchemy>=2.0.0
-pymysql>=1.1.0
-pydantic>=2.0.0
-pydantic-settings>=2.0.0
-cryptography>=42.0.0
-python-jose[cryptography]>=3.3.0
-passlib[bcrypt]>=1.7.4
-bcrypt>=4.0.0
-python-multipart>=0.0.6
-httpx>=0.26.0
-redis>=5.0.0
-openpyxl>=3.1.0
-apscheduler>=3.10.0
+fastapi>=0.109.0
+uvicorn>=0.27.0
+sqlalchemy>=2.0.0
+pymysql>=1.1.0
+pydantic>=2.0.0
+pydantic-settings>=2.0.0
+cryptography>=42.0.0
+python-jose[cryptography]>=3.3.0
+passlib[bcrypt]>=1.7.4
+bcrypt>=4.0.0
+python-multipart>=0.0.6
+httpx>=0.26.0
+redis>=5.0.0
+openpyxl>=3.1.0
+apscheduler>=3.10.0