How to show a Codex CLI side conversation in a pane beside the main chat

Codex CLI 0.168.0 (November 13) adds the features.tui_workspace feature. With it on, a side conversation opens in a pane next to the main chat, so you can ask a quick question with /side and still watch how the main chat is progressing.

1. Update to 0.168.0.

npm install -g @openai/codex@0.168.0

1. Enable the feature in config.toml.

[features]
tui_workspace = true

1. Open a side conversation with /side and it appears beside the main chat. Drag the divider to resize the panes, or press the leader key and then z to zoom the focused pane. The leader key defaults to Ctrl+X and can be changed in /keymap.

This feature is only in the changelog so far and isn't in the configuration docs yet.