Store /side chats in session logs

What variant of Codex are you using?

cli

What feature would you like to see?

/side is ephemeral by design, but the chats that you might have there are sometimes end up producing useful context for future work. Would be nice to be able to easily store these without having to tell the chat export some sort of handoff markdown. Instead I'd like to be able to resume / point codex at a session file for context.

The ask here is to manually opt in to transitioning from ephemeral to a non-ephemeral thread somehow. It's possible that this is available through some path already, but I didn't see it. (Asking codex to find a way to do this didn't turn up anything obvious - I resorted to letting it write out a markdown handoff doc instead).

Additional information

_No response_