Feature Request: Support a side-by-side terminal layout (terminal docked on the right)

What variant of Codex are you using?

Codex App

What feature would you like to see?

Body:

I’d like to request an alternative layout option for Codex App’s terminal.

Right now, the terminal is fixed at the bottom of the app. This works, but for workflows that involve frequent interaction between the chat area and terminal output, a bottom-docked terminal makes it harder to use the available horizontal space efficiently.

Requested behavior

Please add an option to display the terminal side-by-side with the chat area, with the terminal vertically docked on the right side of the app instead of fixed at the bottom.

Why this would help
Makes it easier to read chat and terminal output at the same time
Better use of wide screens and external monitors
Reduces vertical back-and-forth when iterating between instructions and command output
Feels more natural for development workflows, especially when the terminal needs to stay visible continuously
Suggested implementation

A few possible approaches:

Add a layout toggle: bottom terminal / right-side terminal
Allow users to resize the terminal pane
Optionally remember the user’s preferred layout between sessions
Ideal UX
Chat area on the left
Terminal pane on the right
Both visible simultaneously
Adjustable divider between the two panes

This would significantly improve usability for coding-heavy workflows in Codex App.

<img width="2560" height="1331" alt="Image" src="https://github.com/user-attachments/assets/c9f55215-b96e-4653-aa92-3095b170079a" />

Additional information

_No response_