What if your study notes could actually talk back to you? For Hacktoberfest 2026, I decided to build something that solves a real problem for a friend: Study Buddy — a simple AI-powered study assistant that lets you upload your study PDFs and ask questions about them. Instead of searching through hundreds of pages manually, you can upload your notes and simply ask: "What is deadlock and what are its necessary conditions?" or: "Who is Morrie and why did Mitch visit him every Tuesday?" S...