I already have a running web application; the core features are in place but three key integrations are still missing. 1. Stripe 2. OpenAI 3. Affiliate links All secrets should sit in environment variables, the code must remain readable and match my current style, and the finished work has to run cleanly in both local and production environments. Unit tests or clear test scripts are essential so I can verify everything before we go live. If you have solid experience with Stripe’s SDK, OpenAI’s REST API, and common affiliate-tracking libraries or custom tracking logic, let’s talk.