Ruling 1: model records keep a bounded previous list (64 ids, oldest dropped)
of ids that left by rotation, grace expiry or re-issue; a fire removes the
record. A tokens.keys leaf matches and counts every id in the lineage that
holds it. Lineage ids are unique host-wide. An orphaned leaf limits nothing,
logs one value-free line when it becomes orphaned, and the Console usage
view lists it.
Ruling 2: an agent with no model key under a key quota refuses
key-quota-no-model-key, passed through the broker, launcher and stop reason.
Ruling 3: covered by the lineage; no mayLaunch change.
Ruling 4: the usage module receives a frozen { readUsageQueue } only.
Ruling 5: every telemetry fixture wait races a 5 s real-timer deadline.
jason.woltje
3692fca522