feat: 重构MCP功能和AI服务提供者架构

backend/app/schemas/mcp_plugin.py

@@ -1,5 +1,5 @@
 """MCP插件Pydantic模式"""
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, ConfigDict
 from typing import Optional, Dict, Any, List
 from datetime import datetime
 
@@ -82,8 +82,7 @@ class MCPPluginResponse(BaseModel):
     # 时间戳
     created_at: datetime
 
-    class Config:
-        from_attributes = True
+    model_config = ConfigDict(from_attributes=True)
 
 
 class MCPToolCall(BaseModel):