### Self check - [x] I searched [existing issues](https://github.com/zhayujie/CowAgent/issues) (incl. closed) — no duplicate. ### What's the problem? 希望在对话框增加一个实时切换模型的小选项，现在要去设置手动修改； ### What would you like? _No response_ ### Contribution - [ ] I'd be interested in helping implement this.