Allow disabling automatic sidebar expansion on mouse hover

What variant of Codex are you using?

Codex Desktop App (macOS)

What feature would you like to see?

Problem

The left project sidebar automatically expands whenever the mouse cursor touches the left edge of the window.

For users who spend many hours working in Codex, especially on large monitors or while frequently moving the cursor between applications, this happens unintentionally dozens or even hundreds of times per day.

The sidebar opens even when I have no intention of interacting with it, interrupting the workflow and causing accidental UI changes.

Expected behavior

Please add an option to control the sidebar behavior.

For example:

Settings → Sidebar

• [ ] Auto-expand on hover
• [ ] Require click to open sidebar
• [ ] Always keep sidebar collapsed until manually opened

Why this matters

Many professional users keep the sidebar collapsed because the main editor/chat area is more important than the project list.

Automatic expansion on hover reduces usable workspace and repeatedly interrupts the reading and editing flow.

This is especially noticeable when:

• working with multiple monitors;
• using a large mouse movement area;
• selecting text near the left edge;
• dragging files into the window;
• working for many consecutive hours.

Benefit

Giving users control over the sidebar behavior would improve usability without changing the default experience for existing users.

Those who like the current behavior could simply leave "Auto-expand on hover" enabled, while users who prefer a more stable interface could disable it.

P.S.

This is similar to the behavior available in many professional IDEs, where the navigation panel can either auto-hide or require an explicit click to reopen, depending on user preference.

Additional information

_No response_