Aman018-gif/coding_platform_jklu ? reverse-engineered prompt

Build me a web app for an educational coding platform and LMS for a college.

It should let students sign up and log in, open a clean dashboard, write code in the browser, run and submit it, and join coding contests and lab assignments. I want a live leaderboard, basic stats like solved problems and streaks, and a profile page that shows past submissions, points, and ranking. It should also send reminders and updates by email, and if possible SMS too.

For teachers and TAs, I need a separate dashboard where they can create and manage contests, add coding problems with test cases and constraints, see final rankings, and export results in CSV or PDF. Please make it feel polished and modern, with responsive UI and smooth navigation. Use current docs online if you need to, and build both the frontend and backend so it works end to end.