feat(ql3): establish 3.0 incubation baseline

back/runtime/ports/workerRemoteRunCompletionClient.ts

@@ -0,0 +1,8 @@
+import type { RemoteRunCompletionCommand } from '../application/remoteRunCompletionService';
+import type { PrimaryRunCompletionResult } from '../application/primaryRunCompletionService';
+
+export interface WorkerRemoteRunCompletionClient {
+  complete(
+    command: RemoteRunCompletionCommand,
+  ): Promise<PrimaryRunCompletionResult>;
+}