vedantrajeshirke/twinchat ? reverse-engineered prompt

Build me a full stack social chat app where people can sign up, pick at least a few interests, and then find other people or groups who like the same things. I want a home screen, login and signup, profile editing, a discover page with search and interest filtering, connection requests, friends list, and group pages. Friends should be able to chat one on one in real time, see typing and online status, reply to messages, and send small file attachments like images, videos, or documents. Group members should all be able to chat together, while only the group owner can edit or delete the group.

Make it feel polished with a clean modern UI, empty states, loading states, and a theme switch that saves for each user. If you need current library details or best practices, look them up online first. Use a simple demo mode too, so I can open it and see real sample users and conversations right away.