Optional text wrapping

In the current, codex automatically wrap thinking and output text block :

<img width="2932" height="1022" alt="Image" src="https://github.com/user-attachments/assets/27c3edb6-cae2-4d0f-bbef-92ebbdef1601" />

It takes two cons:

1. It is difficult to copy and paste the output and preserve the format.
2. The screen width isn't fully used.

Optional automatically wrapping would be better.