DhritiVaz/Sealit ? reverse-engineered prompt

Build me a web app called Sealit that helps developers discover real unsolved problems worth building for. It should pull posts from Reddit and Hacker News, use Gemini to turn messy posts into clear problem cards, and give each user a personalized feed based on their stack and interests. I want a polished landing page, auth with email plus Google and GitHub, and an onboarding flow where people can paste their GitHub, LinkedIn, or portfolio links so AI can figure out their skills automatically, with a manual option too.

Each problem should have a detail page with the source, context, difficulty, time estimate, whether a real solution already exists, and 3 practical project ideas tailored to the user. Users should be able to save problems and move them through idea, MVP, and shipped in a simple tracker. If they connect GitHub, show repo analysis like completeness, competitors, and gaps. Please make the scraper work on demand and on a schedule, use Supabase for auth and data, and let the app fall back to seed data if setup is missing. Feel free to check current docs online if needed.