Codex App: make the file tree/sidebar resizable or show full filenames

What variant of Codex are you using?

App

What feature would you like to see?

Please make the Codex App file tree/sidebar resizable, or otherwise provide a way to see full file and folder names in the file tree.

Right now, on macOS, the file tree/sidebar is too narrow for some project structures. Longer file and folder names are truncated, and I cannot find a way to expand the sidebar. Hovering near the sidebar edge does not change the cursor, and dragging does not resize it.

This makes it hard to distinguish files in projects with longer names, nested directories, or similarly named files.

A few possible fixes would help:

• Allow the file tree/sidebar width to be resized by dragging.
• Persist the chosen sidebar width across app launches.
• Show full filenames/paths on hover.
• Add a wider sidebar mode or compact/full path display option.

Additional information

Platform: macOS
uname -mprs: Darwin 24.6.0 arm64 arm

I searched for existing issues before filing. I found related but not duplicate issues:

• #16669: adjustable chat content width in Codex App, but this is about chat body width, not the file tree/sidebar.
• #8585: truncated file paths when manually adding context, but that is for a different UI and is closed.
• #17213 and #18570: sidebar width/responsiveness issues in the VS Code extension, not the Codex Desktop App.

I could not find an existing issue specifically about the Codex App file tree/sidebar being too narrow or non-resizable.