[Question]: Where each update of the DSL is saved in the database

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### Describe your problem

工作流改变之后，前端的智能体还是查询的旧的工作流，并且能够回答出来，说明旧的工作流已经保存在数据库里，通过各种id查询到知识库回答出答案

The issue names no files, tests, or entry points; begin by tracing the workflow/DSL persistence and the frontend query path in the repository. Done would require explaining where each update is stored and why an older workflow can still be returned.

Written by the indexing model from the issue text.