Honestly the TUI in most of these coding agents is so fancy I have trouble thinking of them as "terminal". I use Pi Coding Agent and the fact that it's terminal means it's easy to run inside something properly sandboxed in a YOLO mode using normal bash commands instead of relying on individually sandboxed tools.

Once I got the tmux settings for proper scrolling and whatnot it feels fine. Honestly the TUI of tmux is the one that really enrages me - so much complexity for just "I want to switch terminals on my remote".

Zellij is a pretty good tmux alternative, with a UI that feels a lot friendlier.