Generates a timed hackathon pitch (Marp slide deck and/or table-demo script) from a GitHub repo plus a short description, with 1-minute, 2-minute, 3-minute, or 5-minute versions and per-slide speaker notes. Use when the user asks for a pitch deck, demo-day slides, a hackathon presentation, a judging table script, or help pitching their project under a time limit.
