adithyan-css/brownie-bliss ? reverse-engineered prompt

Build me a simple full stack online brownie shop for Brownie Bliss with a clean homepage, products page, birthday packages page, and contact page. The main thing I want is a smooth ordering flow where a customer adds items to cart, enters their name and WhatsApp number, goes through an OTP step, adds their delivery address, then places the order and opens WhatsApp with the full order details ready to send.

I also need an admin panel where I can log in, see all orders, filter them by status, confirm payments, update order status, and generate a printable receipt for each order. Make it work with a Node and Express backend, MongoDB for storing orders, and basic JWT login for the admin area. Use the existing pages and keep the design polished, mobile friendly, and easy to edit. If anything needs a current library or API setup, look it up online and wire it in cleanly.