semantic update

backend/src/api/routes/__tests__/test_datasets.py

@@ -1,8 +1,10 @@
 # [DEF:backend.src.api.routes.__tests__.test_datasets:Module]
 # @TIER: STANDARD
+# @SEMANTICS: datasets, api, tests, pagination, mapping, docs
 # @PURPOSE: Unit tests for Datasets API endpoints
 # @LAYER: API
 # @RELATION: TESTS -> backend.src.api.routes.datasets
+# @INVARIANT: Endpoint contracts remain stable for success and validation failure paths.
 
 import pytest
 from unittest.mock import MagicMock, patch, AsyncMock
@@ -14,6 +16,7 @@ client = TestClient(app)
 
 
 # [DEF:test_get_datasets_success:Function]
+# @PURPOSE: Validate successful datasets listing contract for an existing environment.
 # @TEST: GET /api/datasets returns 200 and valid schema
 # @PRE: env_id exists
 # @POST: Response matches DatasetsResponse schema