Write a high-retention 30-second YouTube intro from a FINISHED video transcript. Analyzes the real transcript first (extracts the actual payoff, the hardest number, the contrarian reframe, the best re-hook moment, and the video type), then writes a 5-beat intro (Hook/Payoff/Proof/Reframe/Re-hook) under an 80-word budget. Trigger on '/yt-intro', 'write the intro for this video', 'I filmed the video, now write the intro', 'rewrite my intro', 'fix my opening', or any request to script a YouTube long-form intro from a transcript the user has already recorded.
