Codex App should show branch selector when HEAD is detached

What version of the Codex App are you using (From “About Codex” dialog)?

26.506.31421

What subscription do you have?

API

What platform is your computer?

macOS

What issue are you seeing?

When the git HEAD is in detached state, the branch selector disappears.

<img width="650" height="259" alt="Image" src="https://github.com/user-attachments/assets/1151bfec-9a71-4a42-aca6-3cd7260299a1" />

Then I can't really start a new branch from main/master from Codex App. I have to go to terminal to do so.

What steps can reproduce the bug?

• Open a Codex App in a git repo. You should see a branch selector.
• run git checkout HEAD --detach in that repo.
• The branch selector now disappears.

What is the expected behavior?

_No response_

Additional information

_No response_