fix(parsers): make source jobs resumable

tests/apps/parsers/test_source_cards_service.py

@@ -441,6 +441,31 @@ class SourceCardServiceDatabaseTest(TestCase):
     def setUp(self):
         SourceCardService.clear_cache()
 
+    def test_enqueue_vacancy_refresh_reuses_fresh_active_job(self):
+        existing = BackgroundJob.objects.create(
+            task_id="active-vacancies",
+            task_name="apps.parsers.tasks.parse_trudvsem_vacancies",
+            status=JobStatus.STARTED,
+        )
+        task = MagicMock()
+
+        result = SourceCardService._enqueue_task(
+            task=task,
+            task_name="apps.parsers.tasks.parse_trudvsem_vacancies",
+            requested_by_id=5,
+            meta={"source_card": "labor-vacancies"},
+            kwargs={"requested_by_id": 5},
+        )
+
+        self.assertEqual(
+            result,
+            {
+                "task_id": existing.task_id,
+                "task_name": existing.task_name,
+            },
+        )
+        task.apply_async.assert_not_called()
+
     def test_defense_unreliable_suppliers_counts_unique_generic_organizations(self):
         _save_source_record(
             source=ParserLoadLog.Source.UNFAIR_SUPPLIERS,