mubix-dev/cognito-notes-ai ? reverse-engineered prompt

Build me an AI study notes app where a student can sign in with Google, type any topic, and get exam ready notes back in about 30 seconds.

I want the notes to include clear headings, definitions, examples, exam tips, a quick revision sheet, practice questions, and a simple importance ranking for the key subtopics. It should also generate a Mermaid style diagram, a few useful charts, and a quiz mode with 10 multiple choice questions plus instant feedback and a final score. The user should be able to save notes, come back to their history, delete old ones, and download the full note as a PDF that looks good on mobile too.

Please add a credit system, give new users some free credits, and let them buy more with Stripe. Also send a welcome email the first time someone signs up, and make sure the app feels polished and modern. If you need to look up current docs or best practices online, go ahead.