Refactor: Update test files to improve mock structure and organization

src/services/queueService.server.ts

@@ -12,9 +12,6 @@ import * as db from './db/index.db';
 import { FlyerProcessingService, type FlyerJobData, type IFileSystem } from './flyerProcessingService.server';
 import { FlyerDataTransformer } from './flyerDataTransformer';
 
-// --- Start: Interfaces for Dependency Injection ---
-// --- End: Interfaces for Dependency Injection ---
-
 export const connection = new IORedis(process.env.REDIS_URL!, {
   maxRetriesPerRequest: null, // Important for BullMQ
   password: process.env.REDIS_PASSWORD, // Add the password from environment variables