caller-options

The Caller Options protocol (COP). When a participating skill runs, detect optionality in Venue (inline / delegated sub-agent / fan-out) and Mode, evaluate it, and surface the choice to the caller instead of picking silently. Trigger via /caller-options, or automatically when a skill carrying the COP opt-in block runs. Not a session mode — use orchestrate-mode or multi-agent-mode for that; COP routes one skill…