I've been using codex app server. Works great.

https://learn.chatgpt.com/docs/app-server

Hmm, thanks. Didn't know about this. But looks like a bunch of hassle to set it up?

Finding the right docs/flags took longer than anything else. 15 mins from zero to productive on my phone.

One thing I noticed you can't use codex installed via npm, but it will tell you that. Ymmv I'm a pretty simple user and do things in small manageable chunks. I try keep context < 10% before I fire off a task so I don't use many skills etc.

if you don't want to hassle with it, use desktop app, you either can make it remote controllable or you can control other devboxes.