Cancel Skill

Intelligent cancellation that detects and cancels the active OMC mode.

The cancel skill is the standard way to complete and exit any OMC mode. When the stop hook detects completion, it instructs the LLM to invoke this skill for state cleanup. Retry a failed operation in the same scope and report what remains; --force changes shutdown urgency, never scope, lock handling, or ownership checks. --all is the only cross-session authorization.