tarun1sisodia/Smartcampus ? reverse-engineered prompt

Build me a SmartCampus app for schools and colleges that helps teachers take attendance quickly and lets admins manage everything from one place.

I want a clean Flutter app that works on web and mobile, with role based login for admin, teacher, and student. Admin should be able to manage classes, subjects, semesters, sections, student profiles, photos, and attendance data, plus see basic analytics and export or import records. Teacher should be able to create attendance sessions, mark present or absent or other statuses, and move through students in a simple image based carousel. Students should be able to view their profile and attendance history.

Use Supabase for auth, database, and storage, and make the UI modern, responsive, and easy to use. If anything is unclear, check the current docs or existing project files and fill in sensible defaults. Also make sure it runs nicely on desktop and browser too.