sujichandhirabose05/MERN-to-do-task-manager ? reverse-engineered prompt

Build me a simple to do task manager app that lets a user add, view, edit, complete, and delete tasks in a clean single page interface.

I want it to feel easy to use, with a nice layout and clear task status so it is obvious what still needs attention and what is done. Include a basic backend so the tasks can be saved and loaded properly instead of disappearing on refresh. If it helps, set it up so I can run it locally with a simple start command, and make sure the front end and server work together smoothly.

Keep the design modern but straightforward, and make it responsive so it still looks good on a phone. If you need current setup details or best practices for anything, look them up online first and then build it in a practical way.