Codex chat panel stretches to full width on maximized windows; please add a max-width layout like Cursor does

What variant of Codex are you using?

Codex VScode Extension Pre Release version

What feature would you like to see?

When the VS Code window is maximized, the Codex chat panel stretches to fill the entire editor width. This makes the content look visually sloppy and is harder to read at wide screen sizes.
Cursor handles this well by constraining the chat panel to a fixed maximum width and centering the content. The result feels polished and readable even on large monitors.
Variant: IDE Extension
What I would like to see:

A max width applied to the Codex chat panel content area so it does not stretch infinitely on wide or maximized windows. A centered, constrained layout like Cursor uses would be ideal.
Screenshots attached for comparison.

Screenshot 1 How Cursor handles this
<img width="1920" height="1040" alt="Image" src="https://github.com/user-attachments/assets/6e2e1b3c-f900-4a03-bacf-2c861fae9d00" />

Screenshot 2 How Codex Stretches them

<img width="1920" height="1040" alt="Image" src="https://github.com/user-attachments/assets/b70cc673-a9ab-44c6-9b32-6a7a3c781225" />

Last Verified issue exists 13/06/2026

Additional information

_No response_