more unit testing

ecosystem.config.cjs

@@ -6,6 +6,8 @@
 module.exports = {
   apps: [{
     name: 'flyer-crawler-api', // The name of our application in PM2
+    // Explicitly set the working directory. This is crucial for reliability.
+    cwd: '/var/www/flyer-crawler.projectium.com',
     script: 'npm',             // The script to run (we want to run an npm command)
     args: 'run start',         // The arguments to pass to the script (i.e., 'npm run start')
     env_production: {