manoj-m001/scheduleer ? reverse-engineered prompt

Build me a full stack meeting scheduling app like Calendly where people can create booking pages, pick an available time, and confirm a meeting in just a few clicks. I want a clean React front end with a smooth scheduling flow, and a Node and Express backend that saves everything in MongoDB.

It should let someone set up their availability, choose a time slot, and send booking details by email using Resend. Please make sure the app can run locally with separate frontend and backend setup, and use environment variables for the database and email settings. If you need to check current docs for anything, go ahead and look them up online.

Keep the UI simple and modern, make the booking experience feel polished, and include the basic pages and forms needed for a working scheduling product.