Support for running multiple simultaneous profiles in the app

What variant of Codex are you using?

App

What feature would you like to see?

Support for running multiple simultaneous profiles.
E.g in config.toml we can configure different providers/profiles, but I currently have to restart the app to swap between them, ideally I'd like to be able to run x number at the same time across different projects etc.

So inside a project/session you could select which profile/provider to use/consume and the session just runs with that.

Additional information

Ideally would also like config editing inside the app to avoid toml editing entirely, but that's out of scope here.