Support branch switching

What variant of Codex are you using?

mac 桌面端

What feature would you like to see?

切换分支时候不需要强制我提交更改或者取消当前分支的内容，这样我下次切换回这个分支的时候我的修改其实是还在的（有点类似于git stash pop）

Additional information

_No response_