Resolve a surface's reservation wiring, refusing a key the host cannot
honour.
undefined is admitted alongside 'none' for the same reason
readExecutionFence admits it — a wiring that arrives through an object the
host may not have populated — and means the same thing: no store. What it
does NOT mean is "ignore the key", which is why this throws rather than
returning undefined. A start carrying an idempotency key onto an unwired
deployment is a request this host cannot answer truthfully.
Resolve a surface's reservation wiring, refusing a key the host cannot honour.
undefinedis admitted alongside'none'for the same reasonreadExecutionFenceadmits it — a wiring that arrives through an object the host may not have populated — and means the same thing: no store. What it does NOT mean is "ignore the key", which is why this throws rather than returning undefined. A start carrying an idempotency key onto an unwired deployment is a request this host cannot answer truthfully.