chore: commit remaining maintenance and model changes

backend/tests/test_maintenance_api.py

@@ -8,6 +8,7 @@
 # @TEST_CONTRACT: POST /api/maintenance/{id}/end -> 202 {task_id, status}
 # @TEST_CONTRACT: POST /api/maintenance/end-all -> 202 {task_id, status}
 # @TEST_EDGE: missing_tables -> 422 validation error
+# @TEST_EDGE: missing_environment_id -> 422 validation error
 # @TEST_EDGE: end_time_before_start_time -> 400 validation error
 # @TEST_EDGE: non_existent_event_end -> 404 not found
 from datetime import UTC, datetime, timedelta
@@ -185,6 +186,27 @@ class TestStartEndpoint:
         assert response.status_code == 422
     # #endregion test_start_missing_tables
 
+    # #region test_start_missing_environment_id [C:2] [TYPE Function]
+    # @BRIEF Missing environment_id field returns 422.
+    # @TEST_EDGE: missing_environment_id -> 422 validation error
+    def test_start_missing_environment_id(self, client, mock_db, mock_task_manager):
+        response = client.post(
+            "/api/maintenance/start",
+            json={
+                "tables": ["raw.sales"],
+                "start_time": (datetime.now(UTC) + timedelta(hours=1)).isoformat(),
+                "end_time": (datetime.now(UTC) + timedelta(hours=3)).isoformat(),
+                "message": "Test maintenance",
+            },
+        )
+        assert response.status_code == 422
+        data = response.json()
+        assert any(
+            "environment_id" in str(err.get("loc", []))
+            for err in (data.get("detail", []) if isinstance(data.get("detail"), list) else [])
+        )
+    # #endregion test_start_missing_environment_id
+
     # #region test_start_end_time_before_start [C:2] [TYPE Function]
     # @BRIEF end_time before start_time returns 400.
     def test_start_end_time_before_start(self, client, mock_db, mock_task_manager):