ONE channel's prepared spare and the SWAP LATCH over it — the entity map's /safety/spares,
addressed per channel because the gesture and every refusal it can carry are per channel
(2026-07-30-southbound-actuator-contract.md §10).
A channel with no declared spare has NO INSTANCE here: absence is the fact, and it is what
answers "no spare prepared" without a second flag to keep in step with the declaration.
ONE channel's prepared spare and the SWAP LATCH over it — the entity map's
/safety/spares, addressed per channel because the gesture and every refusal it can carry are per channel (2026-07-30-southbound-actuator-contract.md§10).A channel with no declared spare has NO INSTANCE here: absence is the fact, and it is what answers "no spare prepared" without a second flag to keep in step with the declaration.