ctrl+d in /side should exit the side chat, not exit codex

What variant of Codex are you using?

cli

What feature would you like to see?

I was in a side chat and hit ctrl+d expecting it to exit out of the layer into the root layer of chat, but codex exited. Side chats are similar to a subshell in a shell, so ctrl+d should be an unwind / exit layer rather than a quit command here (or at least prompt). The Impact of not doing this is loss of CoT on the main chat because it's not reloaded when running resume.

Additional information

_No response_