flat-playlist mode returns timestamp=null for most playlist entries so
published_at is missing after the initial index. Now kicks off
_enrich_missing_task (scoped to the playlist size) as a daemon thread
immediately after indexing commits, filling in dates and view counts
in the background via individual video fetches.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
When yt-dlp returns no thumbnail for a playlist entry, fetch the
playlist's first video (max_videos=1) and derive a stable thumbnail
URL from its video ID. Applied during both the initial fetch and
on index (already done on index in previous commit).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
_stable_thumbnail expects a video ID but was being passed a playlist ID
(PLxxx), producing a broken URL. Now picks the best thumbnail from
yt-dlp's thumbnails array, falling back to the singular thumbnail field.
Also backfills playlist.thumbnail_url from the first video when indexing
a playlist that still has no thumbnail.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- New playlists router: fetch channel playlists from YouTube, index
playlist videos, browse by playlist with pagination
- Playlist model gets video_ids column to store ordered video list
- Register playlists router in main.py with DB migration
- Add Playlists tab to Channel page: grid of playlist cards, click to
browse videos, index/re-index per playlist
- Fix explore older videos skipping all entries without published_at;
flat-playlist entries for older videos rarely include timestamp data
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
