The new ytdy crate mounts /youtube: login-free search terms exactly
like tidal's (creatable, renamable, deletable, results as queueable
downloadable tracks) and, when a cookies file is configured, the
user's playlists. All extraction runs through one bounded subprocess
seam (argv-only, per-call timeout, stdout cap, typed errors) so tests
drive the provider with a fake script. yt-dlp is declared in devenv;
a failed binary probe disables the provider, never the server.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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