fix(queue): expose queue producers through a global module

apps/server/src/integrations/queue/queue-producers.module.ts

@@ -0,0 +1,11 @@
+import { Global, Module } from '@nestjs/common';
+import { BullModule } from '@nestjs/bullmq';
+import { createQueueRegistrations } from './queue.registrations';
+
+// Global so @InjectQueue tokens resolve anywhere, in the app and in worker contexts.
+@Global()
+@Module({
+  imports: [...createQueueRegistrations()],
+  exports: [BullModule],
+})
+export class QueueProducersModule {}