feat(ql3): establish 3.0 incubation baseline

back/runtime/ports/workerRunLeaseTracker.ts

@@ -0,0 +1,8 @@
+import type { RunDispatchLeaseRecord } from '../domain/runDispatchLease';
+
+/** In-process lease renewal view used by the offer receiver. */
+export interface WorkerRunLeaseTracker {
+  track(lease: RunDispatchLeaseRecord): void;
+  untrack(attemptId: string): RunDispatchLeaseRecord | undefined;
+  leases(): RunDispatchLeaseRecord[];
+}