refactor(db): 修复异步连接池无界增长，并完成 SQLAlchemy 2.0 迁移与分层归位 (#6320)

app/chain/message.py

@@ -26,8 +26,8 @@ from app.runtime.config import settings, global_vars
 from app.domain.context import MediaInfo, Context
 from app.domain.meta.metabase import MetaBase
 from app.db.models import TransferHistory
-from app.db.transferhistory_oper import TransferHistoryOper
-from app.db.user_oper import UserOper
+from app.db.oper.transferhistory import TransferHistoryOper
+from app.db.oper.user import UserOper
 from app.application.directory import DirectoryHelper
 from app.application.messaging.interaction import (
     agent_interaction_manager,
@@ -42,7 +42,7 @@ from app.schemas.message import ChannelCapabilityManager, ChannelCapability
 from app.schemas.system import TransferDirectoryConf
 from app.schemas.types import EventType, MessageChannel, MediaType
 from app.adapters.network.http import RequestUtils
-from app.domain.media import build_media_key, resolve_media_identity
+from app.schemas.media import build_media_key, resolve_media_identity
 from app.domain.string import StringUtils