o kill: kills the active session.
Prompt REPL now supports slash commands:
/stop, /compact, /kill, /clear, /model X, /backend X, /cwd X, /help
Slash commands are handled locally without sending to the agent.
o tui: launches a 4-pane tmux layout with:
- chat stream (left, large)
- statewait monitor (top-right, reactive)
- spare shell with session/agent exported (bottom-right)
- prompt REPL (bottom, full width)
o stop: shorthand for 'o ctl stop' to interrupt a running agent.