PndaMan/cortex ? reverse-engineered prompt

Build me a local first desktop study app that feels like a private NotebookLM for students.

I want to drop in PDFs, slides, docs, web pages, YouTube links, audio, and even photos of handwritten notes, then have everything organized into Subjects, Topics, and Sources. After that, the app should generate useful study material from my own sources, like cheatsheets, flashcards with spaced repetition, quizzes, timed exam practice, audio summaries, mind maps, and simple visual summaries. It should also let me ask questions and get answers with citations back to the original source.

Make it work fully on my machine with a local database, offline friendly where possible, and with bring your own AI keys for generation. Add a clean study dashboard with deadlines, notes, progress, and search across everything. If something needs a current library or API detail, look up the latest docs online first. Keep the UI polished, fast, and desktop native.