Channels: one loader tries, in order, the Videos/Live/Shorts tabs (normal
channels), the uploads playlist (Topic channels), the Releases/Playlists tabs
expanded into their tracks (artist/music channels whose only content is albums,
e.g. Cathedral of Praise Worship), then the home page; bare names are resolved
to an id first. Nothing public → ok with a message, never a raw yt-dlp error.
Saves: SaveSlots caps concurrent offline saves (Settings → Offline cache →
Videos saved at once, 1–8, default 4); queued saves show "Waiting for a free
slot", and resumed saves now run up to the limit instead of one at a time.