Interface EscalationResolution

Resolution provenance delivered to the waiting workflow alongside the resolver payload, under the reserved $resolution key. Present exactly when the resolving caller supplied resolvedBy — without it the signal payload passes through byte-identical, so existing waiters are unaffected. The $-prefixed key namespace is reserved for control data riding the signal (like $escalation_id on the legacy routing path); consumer payload fields never collide with it. The stored resolver_payload row column stays clean — provenance rides the signal only.

A waiting workflow declares the key in its condition() payload generic:

const decision = await Durable.workflow.condition<{
  approved: boolean;
  $resolution?: EscalationResolution;
}>(signalId, config);
decision.$resolution?.resolvedBy; // who resolved it
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