BoWen Qiu

Support rewriting the variables value of the prompt within one conversation

1

### Self Checks - [x] I have searched for existing issues [search for existing issues](https://github.com/langgenius/dify/issues), including closed ones. - [x] I confirm that I am using English to submit this...

[IDEA] 增加图形化配置界面 / Add graphical configuration interface on web page

3

### 这个功能请求是用来解决什么问题的？ / Is your feature request related to a problem? Please describe. *请清晰简洁地描述您遇到的问题。例如：我总是在 [...] 时感到不方便。* *A clear and concise description of what the problem is. Ex. I'm always frustrated...