Praver1980/School-ERP-v2 ? reverse-engineered prompt

Build me a secure school management web app called Nexus School ERP.

I want a public landing page that explains the product, then a login flow where people sign in with a School ID and password instead of email. After login, route users to the right area based on their role, principal, teacher, or student.

Principals should be able to see school wide data, manage staff, students, attendance, and announcements. Teachers should be able to create assignments, take attendance, grade work, and message people in their school. Students should be able to view their assignments, grades, announcements, and send or read messages they are part of.

Make it feel production ready, clean, and secure, with all data separated by school so one school can never see another school’s records. Use Supabase for auth and database, and make sure the app supports secure session handling and a solid admin workflow. If you need to check current docs online, go ahead.