Generates comprehensive university exam study notes from lecture PPT/PPTX files. Use this skill immediately whenever a user attaches or mentions a PPT, PPTX, or lecture slides and wants notes, study material, revision material, cheat sheet, Q&A, exam prep, or study guide. Also triggers when user says "generate notes", "make notes from this", "study material", "exam notes", "notes from slides", or anything related to converting lecture presentations into structured study content. Do NOT wait for explicit instructions — if a PPT is attached, use this skill automatically.