Refine data management and collection workflows

backend/app/models/__init__.py

@@ -1,6 +1,7 @@
 from app.models.user import User
 from app.models.gpu_cluster import GPUCluster
 from app.models.task import CollectionTask
+from app.models.data_snapshot import DataSnapshot
 from app.models.datasource import DataSource
 from app.models.datasource_config import DataSourceConfig
 from app.models.alert import Alert, AlertSeverity, AlertStatus
@@ -10,6 +11,7 @@ __all__ = [
     "User",
     "GPUCluster",
     "CollectionTask",
+    "DataSnapshot",
     "DataSource",
     "DataSourceConfig",
     "SystemSetting",