fix(query-tool): show hold lot id via containername and align export

tests/test_query_tool_routes.py

@@ -749,6 +749,48 @@ class TestExportCsvEndpoint:
         decoded = response.data.decode('utf-8-sig')
         assert 'LOT ID' in decoded
         assert 'GA25010001-A01' in decoded
+
+    @patch('mes_dashboard.routes.query_tool_routes.get_lot_holds')
+    def test_export_lot_holds_uses_container_name_as_lot_id(
+        self,
+        mock_get_holds,
+        client,
+    ):
+        mock_get_holds.return_value = {
+            'data': [
+                {
+                    'CONTAINERID': '488103800029578b',
+                    'CONTAINERNAME': 'GA25010001-A01',
+                    'WORKCENTERNAME': '成型',
+                    'HOLDTXNDATE': '2026-02-22 16:53:27',
+                    'RELEASETXNDATE': None,
+                    'HOLD_STATUS': 'HOLD',
+                    'HOLD_HOURS': 1.46,
+                    'HOLDREASONNAME': 'Q-Time Fail',
+                    'HOLDCOMMENTS': '',
+                    'HOLDEMP': 'U001',
+                    'HOLDEMPDEPTNAME': '成型(D)',
+                    'RELEASEEMP': '',
+                    'RELEASECOMMENTS': '',
+                    'NCRID': '',
+                }
+            ],
+            'total': 1,
+        }
+
+        response = client.post(
+            '/api/query-tool/export-csv',
+            json={
+                'export_type': 'lot_holds',
+                'params': {'container_id': '488103800029578b'}
+            }
+        )
+
+        assert response.status_code == 200
+        assert 'lot_holds_488103800029578b.csv' in response.headers.get('Content-Disposition', '')
+        decoded = response.data.decode('utf-8-sig')
+        assert 'LOT ID' in decoded
+        assert 'GA25010001-A01' in decoded
 
 
 class TestEquipmentListEndpoint: