QTZPOC-20

QTZPOC-20: Make metadata parameter optional in check_artifact_exists method.

laborious/utils/repository/model_repository.py

@@ -256,7 +256,7 @@ class MLFlowRepository(SientiaMonitoring):
         return run_info.data.params
 
     def check_artifact_exists(
-        self, run_id: str, artifact_path: str, metadata: dict[str, Any]
+        self, run_id: str, artifact_path: str, metadata: dict[str, Any] | None = None
     ) -> bool:
         """
         Check if an artifact exists in the MLflow Model Registry.
@@ -271,6 +271,9 @@ class MLFlowRepository(SientiaMonitoring):
             run_id (str): Run identifier to inspect.
             artifact_path (str): Path to the artifact to check, relative to the
                 run's artifact root, e.g. 'data_model' or 'data_model/code'.
+            metadata (dict[str, Any] | None): Metadata used for structured
+                logging. Optional, so callers whose own metadata is optional —
+                `download_artifact_code_dir` — can forward it as is.
 
         Returns:
             bool: True if the artifact exists, False otherwise.