I'm working this with https://boxes.dev - a workspace for launching and managing claude + codex sessions, each running in its own cloud devbox.
We launched with a desktop app but have gotten a lot of pull for terminal-driven workflows, so have a TUI as well. It's interesting - when the Codex desktop app launched I was so sure that GUI is the future for coding agents (it's just a chat!). But turns out there's no killing the CLI