feat(gateway): wire adapter factories + DI tokens alongside existing providers

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/gateway/src/queue/queue.module.ts

@@ -1,9 +1,22 @@
 import { Global, Module } from '@nestjs/common';
+import { createQueueAdapter, type QueueAdapter } from '@mosaic/queue';
 import { QueueService } from './queue.service.js';
 
+export const QUEUE_ADAPTER = 'QUEUE_ADAPTER';
+
 @Global()
 @Module({
-  providers: [QueueService],
-  exports: [QueueService],
+  providers: [
+    QueueService,
+    {
+      provide: QUEUE_ADAPTER,
+      useFactory: (): QueueAdapter =>
+        createQueueAdapter({
+          type: 'bullmq',
+          url: process.env['VALKEY_URL'],
+        }),
+    },
+  ],
+  exports: [QueueService, QUEUE_ADAPTER],
 })
 export class QueueModule {}