shashank91514/Saathi-Roommate-Connect ? reverse-engineered prompt

Build me a web app called Saathi that helps students find compatible roommates.

I want people to be able to sign up, log in, create a profile with their lifestyle, habits, preferences, and roommate requirements, then browse and search other users to find a good match. Add a simple compatibility based matching flow so it can suggest roommates who fit well together. Make the app feel clean, modern, and easy to use on both desktop and mobile.

Please include secure authentication, profile pages, search and filtering, and the basic backend API needed to support everything. Use a normal responsive design and keep the whole experience smooth and friendly. If you need to look up current docs online for anything, go ahead and do that.