[core] library: postprocess: finish the transition to __caliper_test_metadata__.yaml

Author: kpouget

projects/core/library/postprocess.py

@@ -16,6 +16,7 @@
 import yaml
 from pydantic import ValidationError
 
+from projects.caliper.engine.constants import LEGACY_METADATA_FILE, METADATA_FILE
 from projects.caliper.engine.kpi.dataclasses import CaliperTestMetadata
 from projects.caliper.orchestration.postprocess import (
     run_postprocess_from_orchestration_config,
@@ -86,8 +87,8 @@ def write_test_labels(
     payload = metadata.to_dict()
 
     # Define both file paths
-    metadata_path = directory / "__caliper_test_metadata__.yaml"
-    legacy_path = directory / "__test_labels__.yaml"
+    metadata_path = directory / METADATA_FILE
+    legacy_path = directory / LEGACY_METADATA_FILE
 
     # Create directory and write to both files for backward compatibility
     metadata_path.parent.mkdir(parents=True, exist_ok=True)