Function invoke_bootstrap_output 

pub fn invoke_bootstrap_output(
    _node: &NodeProto,
    inputs: &[(&str, &dyn SlotValue)],
    _ctx: &mut RuntimeResourceRef<'_>,
) -> Result<DispatchResult, OpError>

BootstrapOutput(cmd) → Trigger. Awaits the matching BootstrapDispatch’s CommandId. Reads the upstream cmd input (a CommandIdValue) and returns DispatchResult::Async(cmd_id) - the engine parks the op in pending_async[cmd_id] until the host completes the command via the ingress queue.