diegoperea20/evolutionapi-whatsapp-rag-gemini-n8n — reverse-engineered prompt

Build me a WhatsApp AI assistant for an online store. Customers should be able to send a normal WhatsApp message asking about products, prices, delivery, returns, or store policies, and the bot should look up the right information from Supabase, then answer clearly using Google Gemini through OpenRouter.

Use n8n as the workflow brain and Evolution API to connect WhatsApp. I want the full setup ready to run, including the n8n workflow, the Supabase table or vector search setup it needs, the webhook connection, and clear environment variables for the API keys and URLs. Include a simple example knowledge base for a store so I can test it right away.

Please also add easy setup instructions for deploying the WhatsApp connection on an Ubuntu server with Easypanel, including the ports I need to open and how to connect the WhatsApp instance. Keep it simple enough that I can follow it step by step. Look up current docs online if you need to.