carthworks/SkillProofAI ? reverse-engineered prompt

Build me a verified skill proof platform for engineering students where they can log in, solve coding problems, and get their work graded automatically with a clear score breakdown. I want separate experiences for Student, Reviewer, Employer, and Admin, with each role only seeing the right pages and actions.

Students should be able to browse problems, open a code editor, submit solutions, see live grading results, take a short assessment, view their submissions and leaderboard rank, and share a public profile that can export nicely for recruiters. Reviewers need a queue where they can inspect code and approve or reject submissions. Employers should be able to discover candidates, open detailed profiles, shortlist people, and request interviews. Admin should have a simple way to monitor the platform.

Please include a polished landing page, good navigation, real time updates, and the ability to run the app locally with a backend, frontend, worker, database, cache, and file storage. If you need current docs for anything, look them up online.