feat: 重构 agentscope 缓存架构，新增消息和附件缓存

backend/src/v1/users/service.py

@@ -7,10 +7,10 @@ from uuid import UUID
 from fastapi import HTTPException
 from sqlalchemy.exc import SQLAlchemyError
 
-from core.auth.models import CurrentUser
-from core.agentscope.persistence.user_context_cache import (
+from core.agentscope.caches.user_context_cache import (
     create_user_context_cache,
 )
+from core.auth.models import CurrentUser
 from core.db.base_service import BaseService
 from core.logging import get_logger
 from schemas.shared.user import UserContext, parse_profile_settings