Make body area responsive and extendable

What version of the Codex App are you using (From “About Codex” dialog)?

26.429.30905

What subscription do you have?

Team

What platform is your computer?

Windows

What issue are you seeing?

The main response area does not extend even if you have a lot of space on either side. It feels irritating that you have a lot of space but still can't see the full response. Its bad UX.

<img width="2078" height="1384" alt="Image" src="https://github.com/user-attachments/assets/9a6eb9aa-417e-4b0a-9aff-6f1a0558faa6" />

What steps can reproduce the bug?

Uploaded thread: 019df6e8-90cf-7e61-a8c3-2f4bcac95b06

See anything on a bigger screen (1920px wide at least) which outputs a table with lot of values. A horizontal bar in the table would appear.

What is the expected behavior?

The body area should take the free space. At least a button to extend body area can be added. So that default behaviour would remain the same.

Additional information

_No response_