fix(data-process): 恢复提前中断的重新生成任务

backend/app/api/v1/endpoints/data_process.py

@@ -715,6 +715,8 @@ def task_detail(
     store: DataProcessStore = Depends(get_data_process_store),
 ) -> dict[str, Any]:
     with api_errors():
+        # 兼容旧版曾在第五步前清空结果的异常任务；严格特征匹配且幂等。
+        store.recover_legacy_aborted_regeneration(task_id)
         task = store.get_task(task_id)
         source_files = store.list_source_files(task_id)
         task["source_files"] = source_files