The update script targets videos dated 2020 onwards in _videos/. It inserts the ticket CTA into descriptions and publishes a new top-level CTA comment.
Run node scripts/update-youtube-comments-2026.mjs --dry-run first. Set up YouTube Data API v3 OAuth credentials outside the repository, save the token outside the repository, then run npm run youtube:update-2026.
The ticket URL and copy can be overridden with YOUTUBE_2026_TICKET_URL, YOUTUBE_2026_COMMENT, and YOUTUBE_2026_DESCRIPTION.