Initial BizOne portal setup

backend/src/webhooks/webhook-worker.service.ts

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+import { Injectable, OnModuleDestroy, OnModuleInit } from '@nestjs/common';
+import type { Job as BullJob, Worker } from 'bullmq';
+import { JobsService } from '../jobs/jobs.service';
+import { RedisQueueService } from '../jobs/redis-queue.service';
+import { WebhooksService } from './webhooks.service';
+
+@Injectable()
+export class WebhookWorkerService implements OnModuleInit, OnModuleDestroy {
+  private worker: Worker | null = null;
+
+  constructor(
+    private readonly jobsService: JobsService,
+    private readonly redisQueueService: RedisQueueService,
+    private readonly webhooksService: WebhooksService,
+  ) {}
+
+  onModuleInit() {
+    this.worker = this.redisQueueService.createWorker(
+      'webhooks',
+      async (job: BullJob<{ dbJobId?: string }>) => {
+        const dbJobId = job.data?.dbJobId;
+        if (!dbJobId) {
+          throw new Error('Redis webhook job missing dbJobId');
+        }
+
+        const claimed = await this.jobsService.markProcessing(dbJobId);
+        if (!claimed) {
+          return;
+        }
+
+        await this.webhooksService.processJob(dbJobId);
+      },
+    );
+  }
+
+  async onModuleDestroy() {
+    if (this.worker) {
+      await this.worker.close();
+      this.worker = null;
+    }
+  }
+}