Command radiation
The scanner prints bind-only. The uplink is whether that CLTU may still be radiated. Redeem must present UTC now. Skew beyond 15s, a missing now, a stale ticket, or the wrong write → radiation_abort. Silence does not reset the timer.
vehicle = job_id CLTU = bind ticket + spend fingerprint radiate = redeem, then forward bind-only now = UTC
DSN aborts command radiation if monitors fail. There is no second copy of the bits. Spec: command-radiation.json.
command_now_required — redeem omitted now.
command_now_invalid — presented now is outside the skew. A command that is not in the shared now is not a command.
ticket_expired — Command Loss Timer. Silence is DEAD.