Flat channel listing doesn't always surface the avatar, so it could be stored
null → the orb fell back to plain initials (looked like a missing poster). Two
fixes:
- Orb falls back to the channel's newest video thumbnail when the avatar is
absent, so it's never blank.
- Opening the channel page (which resolves the real avatar) now backfills it
onto every wished row via set_wishlist_channel_poster — so the actual channel
avatar appears on the wishlist orb thereafter. 6 tests green.
Flat channel listing can't return descriptions, so selecting a video showed 'No
description'. Now we do a non-flat single-video extract on demand — the way the
TV nebula lazy-loads guest stars:
- core: video_detail(id) / shape_video() — description, views, likes, duration,
tags, channel, webpage_url (full extract, yt-dlp injectable for tests).
- API: GET /youtube/video/<id> — returns it AND backfills the description onto
the wishlist row (set_wishlist_video_overview), so re-opening is instant.
- Wishlist info bar (youtube): on select, lazy-fetch → real description +
eyebrow (date · duration · views) + a 'Watch on YouTube' link; cached on the
episode object. 'Loading details…' while in flight.
Mirrors the episode lazy-load + art-backfill patterns. 73 youtube+api tests
green; brace/CSS balanced; music untouched.
- Resolver: capture banner_url + separate avatar (by thumbnail id), keeping
per-video duration/views for the detail hero.
- query_youtube_wishlist reshaped to the EXACT TV-nebula shape: channel = show,
upload YEAR = season (newest first), video = episode (newest=ep1 within a
year), carrying source='youtube' + youtube_id + per-video source_id. Surrogate
int returned as tmdb_id so the nebula's int keying just works.
- New API: GET /youtube/channel/<id> (full channel detail — meta + deeper
uploads + following + per-video wished flags) and POST /youtube/wishlist/add
(per-video wish). DB: youtube_video_wish_state, remove_one_video_from_wishlist.
- Tests updated for the nebula shape + banner + detail endpoints. 82 DB + 69
api/youtube tests green.
api/video/youtube.py wired into the blueprint:
- GET /youtube/resolve — preview a pasted channel (meta + recent uploads) +
a 'following' hydration flag; no writes.
- POST /youtube/follow — {url} or pre-resolved {channel} → follow + wish its
recent uploads (capped 30). Returns channel + counts.
- POST /youtube/unfollow — {youtube_id} → un-follow (keeps wished videos).
- GET /youtube/channels — followed channels for the watchlist page.
- GET /youtube/wishlist — wished videos grouped by channel.
- POST /youtube/wishlist/remove — scope channel|video.
yt-dlp call lives behind resolve (injectable/mockable). 38 API tests green.
