move AI flyer processing to background BullMQ jobs using redis for storage

server.ts

@@ -1,5 +1,9 @@
 // server.ts
 import express, { Request, Response, NextFunction } from 'express';
+// Load environment variables from .env file at the very beginning.
+import dotenv from 'dotenv';
+dotenv.config();
+
 import timeout from 'connect-timeout';
 import cookieParser from 'cookie-parser';
 import listEndpoints from 'express-list-endpoints';