/reverse-engineer: learn an editing style, ship skill iteration 1

This is how fireship-style-edit was born (2026-09-29: Fireship's "Meta is pivoting again" was measured shot by shot, then turned into an engine + style bible). This skill makes that repeatable.

Output: a study folder (numbers + sheets) and a new skill folder .claude/skills/<style>-edit/ that renders a demo in that style. Learn the grammar; never copy the reference's footage, music, logo or show name.

Step 1. Measure (scripts/study.py)

python3 "${CLAUDE_SKILL_DIR}/scripts/study.py" --url "<reference url>" --slug <style> \
    [--start 0 --dur 300] [--prompt "names, products"] [--out studies/<style>]

Downloads with yt-dlp (runs yt-dlp -U on a YouTube 403), trims to the span you want (default whole video, max 10 min; 2 to 5 min is plenty for a long-form style, the whole thing for a short), then measures: