shehryar96/Jazzcash-mobile-wallet-Integration — reverse-engineered prompt

Build me a simple Node.js example project that shows how to connect JazzCash mobile wallet recurring payments.

I want a small HTML page where I can enter a JazzCash test wallet number, submit it, go through the JazzCash sandbox flow, and get back a payment token. Then add a Node script that uses my merchant id, password, integrity salt, and that payment token to make a recurring wallet payment through the JazzCash API.

Keep it easy to understand, with clear placeholders for the JazzCash sandbox credentials and comments showing where to switch to production later. Include setup instructions in the README, mention the required Node version, how to install dependencies, how to run the wallet linking page, and how to run the recurring payment script.

Use the JazzCash sandbox URLs from their docs, and look up current docs online if you need to verify request fields or hashing.