Codex App diff view should keep file list collapsed by default
What variant of Codex are you using?
App
What feature would you like to see?
In the Codex App diff/review view, keep the changed-file list collapsed by default.
The diff content is the primary surface I want when reviewing changes. On a laptop screen, the file list takes up scarce horizontal space, and my usual action is to immediately dismiss it. Most of the time, I do not need file navigation first; I need the widest possible diff view first.
Expected behavior:
- Open the diff/review view with the diff content as the primary surface.
- Keep the changed-file list collapsed by default.
- Let users explicitly open the file list when they need navigation.
- Persist the collapsed/expanded preference if possible.
This should still preserve the file list for workflows that need it. The request is only about the default state.
Additional information
This is related to, but distinct from, #12760. In that issue, an OpenAI comment noted that the tree/list was moved behind the Review button after feedback that users did not want to see it all the time by default.
This request is about the next level of that behavior: even after entering the diff/review view, the file list should not consume space by default unless the user explicitly opens it.