feat(ql3): establish 3.0 incubation baseline

back/runtime/application/boundWorkerRemoteRunCompletionClient.ts

@@ -0,0 +1,23 @@
+import type { WorkerRemoteRunCompletionClient } from '../ports/workerRemoteRunCompletionClient';
+import type { PrimaryRunCompletionResult } from './primaryRunCompletionService';
+import {
+  RemoteRunCompletionService,
+  type RemoteRunCompletionCommand,
+} from './remoteRunCompletionService';
+import type { AuthenticatedWorkerPrincipal } from './workerControlService';
+
+/** The transport authenticates once; Worker request bodies cannot select a principal. */
+export class BoundWorkerRemoteRunCompletionClient
+  implements WorkerRemoteRunCompletionClient
+{
+  constructor(
+    private readonly service: RemoteRunCompletionService,
+    private readonly principal: AuthenticatedWorkerPrincipal,
+  ) {}
+
+  complete(
+    command: RemoteRunCompletionCommand,
+  ): Promise<PrimaryRunCompletionResult> {
+    return this.service.complete(this.principal, command);
+  }
+}