加入部分消息通知入口，同步前端管理

backend/shared/models/__init__.py

@@ -5,6 +5,7 @@ from .user import User, InviteCode
 from .account import Account
 from .task import Task
 from .signin_log import SigninLog
+from .system_config import SystemConfig
 
 __all__ = [
     "Base",
@@ -16,4 +17,5 @@ __all__ = [
     "Account",
     "Task",
     "SigninLog",
+    "SystemConfig",
 ]