subham23-cyber/MERNSTACK-TASK-3 ? reverse-engineered prompt

Build me a simple full stack task manager in this repo, with a backend and a frontend.

I want a basic app where I can add tasks, see my task list, edit a task, mark it as done, and delete it. The frontend should be clean and easy to use, and it should talk to the backend to save and load the data. Make sure the app works smoothly from start to finish, with clear messages if something goes wrong.

Set it up so I can run the backend and frontend separately, and include whatever basic project wiring is needed to get it working. If you need to check current best practices or docs online, go ahead and do that.