added start worker delay

libs/queue/src/queue-manager.ts

@@ -129,7 +129,7 @@ export class QueueManager {
     const queueConfig: QueueWorkerConfig = {
       workers: mergedOptions.workers,
       concurrency: mergedOptions.concurrency,
-      startWorker: !!mergedOptions.workers && mergedOptions.workers > 0,
+      startWorker: !!mergedOptions.workers && mergedOptions.workers > 0 && !this.config.delayWorkerStart,
     };
 
     const queue = new Queue(
@@ -437,6 +437,33 @@ export class QueueManager {
     }
   }
 
+  /**
+   * Start workers for all queues (used when delayWorkerStart is enabled)
+   */
+  startAllWorkers(): void {
+    if (!this.config.delayWorkerStart) {
+      logger.warn('startAllWorkers() called but delayWorkerStart is not enabled');
+      return;
+    }
+
+    let workersStarted = 0;
+    for (const queue of this.queues.values()) {
+      const workerCount = this.config.defaultQueueOptions?.workers || 1;
+      const concurrency = this.config.defaultQueueOptions?.concurrency || 1;
+      
+      if (workerCount > 0) {
+        queue.startWorkersManually(workerCount, concurrency);
+        workersStarted++;
+      }
+    }
+
+    logger.info('All workers started', { 
+      totalQueues: this.queues.size,
+      queuesWithWorkers: workersStarted,
+      delayWorkerStart: this.config.delayWorkerStart 
+    });
+  }
+
   /**
    * Wait for all queues to be ready
    */