shantanudwivedi1/SprintFlow ? reverse-engineered prompt

Build me a simple project management app where people can sign up, log in, and keep track of their projects and tasks in one place.

I want users to be able to create projects, add tasks to each project, update them, mark them done, and delete things when needed. Please make the app feel clean and easy to use, with a smooth experience for basic planning and tracking. The backend should be secure so only signed in users can access their own data, and the app should use a proper API for all the project and task actions.

Please set up both the client and server so the whole thing works end to end, and make sure the app is usable right away without me needing to wire everything together. If you need to check current docs or best practices for anything, go ahead and look them up online.