Add error logging for pending run creation

app/services/run_service.py

@@ -390,6 +390,7 @@ class RunService:
                 task = render_effect.delay(input_list[0], recipe, output_name)
 
             # Store pending run in database for durability
+            try:
                 await self.db.create_pending_run(
                     run_id=run_id,
                     celery_task_id=task.id,
@@ -399,6 +400,9 @@ class RunService:
                     dag_json=dag_json,
                     output_name=output_name,
                 )
+            except Exception as e:
+                import logging
+                logging.getLogger(__name__).error(f"Failed to save pending run: {e}")
 
             # Also store in Redis for backwards compatibility (shorter TTL)
             task_data = json.dumps({