yt-dlp's EJS (External JavaScript Solver) needs two things:
1. The solver scripts — only bundled with yt-dlp[default], not bare yt-dlp
2. An explicit --js-runtimes flag — Node.js is not the default (Deno is)
Both are now set: pip installs the [default] extras, and /etc/yt-dlp.conf
sets --js-runtimes node globally so every yt-dlp call uses it.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>