swaroop546/MERN_DEVASTRA_TEACHING_REPO ? reverse-engineered prompt

Build me a simple full stack MERN app that I can use as a teaching project. I want a clean frontend and a separate backend that work together, with a basic workflow a beginner can understand, like creating, viewing, updating, and deleting a few records.

Keep the app easy to run locally, with clear setup and sensible folder structure for both sides. Make the UI simple but polished, and make sure the backend connects properly and handles errors in a straightforward way. If it helps, use current best practices and look up current docs online if you need to.

I mainly want something that feels like a real app, not just a demo, so please wire up the full flow from the form on the frontend to the API on the backend and show the data on screen. Keep the code readable since this is meant for learning and teaching.