Considering the harness needs to be running how else would this work?
Pretty easy these days with old school tools like tmux but more modern tooling like herdr [0] is really the path you'd want to take.
> Considering the harness needs to be running how else would this work?
you can just make new sessions for each new task?
codex itself has a remote control mode that runs continuously. I wrote a systemd service to start it boot and interact with it via my phone.