feat: 重构MCP功能和AI服务提供者架构

backend/app/schemas/character.py

@@ -1,5 +1,5 @@
 """角色相关的Pydantic模型"""
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, ConfigDict
 from typing import Optional, List, Dict, Any
 from datetime import datetime
 
@@ -98,8 +98,7 @@ class CharacterResponse(CharacterBase):
     main_career_stage: Optional[int] = Field(None, description="主职业阶段")
     sub_careers: Optional[List[Dict[str, Any]]] = Field(None, description="副职业列表")
     
-    class Config:
-        from_attributes = True
+    model_config = ConfigDict(from_attributes=True)
 
 
 class CharacterGenerateRequest(BaseModel):