[madeofpendletonwool]

• New videos are detected from the channel's RSS feed (conditional GET + body hash, ignoring view counts); yt-dlp runs only for new IDs, in one batched process
• Falls back to yt-dlp --flat-playlist --playlist-end 15 when the feed fails; feed errors go through feed health
• Channels are grouped across users: one fetch per channel, and nothing older than the longest subscriber cutoff is fetched
• yt-dlp limited to 3 concurrent processes during refresh
• New videos are returned and streamed over the refresh websocket
• Old-video cleanup keeps videos in a user's history, queue, saved list, downloads, playlists or collections (it also no longer deletes podcast queue rows whose episode ID equals an old video's ID)
• Per-channel video filters (migration 076): shortest/longest length in minutes and "title contains"; new endpoints GET /api/data/youtube_video_filter, POST /api/data/update_youtube_video_filter; web settings UI + translations
• A YouTube cutoff of 0 now means no limit, as the web UI already said (it used to remove every video)
• Integration tests with a videos.xml fixture and a yt-dlp stub; 225/225 on Postgres and MariaDB

Release notes:

• YouTube channels now refresh much faster and lighter: Pinepods checks each channel's RSS feed and only runs yt-dlp for new videos.
• A YouTube channel several users follow is checked once for all of them.
• New YouTube videos now appear live during a manual refresh.
• Old YouTube videos are no longer removed while they're in your history, queue, saved list, downloads, playlists or collections.
• New: YouTube video filters. In a channel's settings, add only videos longer or shorter than a number of minutes (keep a channel's podcast episodes without its short clips, or leave out multi-hour streams), or only videos whose title contains some text.
• Fixed: a YouTube download limit of 0 days now keeps all videos instead of removing them.