fix(workflow): avoid in-place mutation of operation dict during loop node validation

api/app/core/workflow/validator.py

@@ -4,6 +4,7 @@
 验证工作流配置的有效性，确保配置符合规范。
 """
 
+import copy
 import logging
 from typing import Any, Union, TYPE_CHECKING
 
@@ -114,6 +115,7 @@ class WorkflowValidator:
             >>> is_valid
             True
         """
+        workflow_config = copy.deepcopy(workflow_config)
         errors = []
 
         graphs = cls.get_subgraph(workflow_config)

api/app/services/app_service.py

@@ -1488,7 +1488,7 @@ class AppService:
 
             is_valid, errors = WorkflowValidator.validate_for_publish(config)
             if not is_valid:
-                raise BusinessException("应用缺少有效配置，无法发布", BizCode.CONFIG_MISSING)
+                raise BusinessException(f"应用缺少有效配置，无法发布, errors:{','.join(errors)}", BizCode.CONFIG_MISSING)
             logger.info(
                 "应用发布配置准备完成"
             )