Codex App: Allow resizing branches pane

What variant of Codex are you using?

Codex App

What feature would you like to see?

Currently when choosing a branch in the branches pane, and when looking at branches generated by Codex Cloud with the default codex/{date}/{task} it can be very hard to tell branches apart (since the pane is not very wide and the task segment is even further filled with noise when you assign a task from Linear since it has linear-mention at the start of each task's branch name). It would be great if this pane could be resized so that long branch names could be read properly.

Additional information

_No response_