I already have a JavaScript code-base that needs to go from local files to a fully running piece of web-application functionality. Your job is to upload the script to my server, adjust configuration files, and make sure it actually runs in production. What the script does: it powers part of my web app’s front-end logic and fetches data that the UI needs in real time. For that to work I need three things wired in: • A database connection (PostgreSQL is in place; credentials will be provided). • Calls to a couple of third-party REST APIs that return JSON. • A basic authentication layer so only logged-in users trigger the endpoints—JWT is preferred, but I’m open if you have a solid alternative. Once everything is connected I want to see the script running on my staging sub-domain, passing all tests, and then promoted to production. Hand off should include a short README or similar notes so I can redeploy in the future without guesswork.