VERCEL SETUP
1. In Vercel Project Settings > Environment Variables, add OPENAI_API_KEY with your own OpenAI secret key.
2. Copy the included api folder into your Vercel project.
3. Deploy.
4. Your endpoint will be:
   https://YOUR-DOMAIN.com/api/rmp-lead-magnet-ai
5. Paste that URL into the Rebrand My PLR Embed Builder and click Test AI Connection.

Do not put the API key into HTML, JavaScript, or the iframe.
