Part of the #180 library picker fixes (API side).
Broken artwork: GetLibraryBrowseItemsHandler.Artwork returned Blazor-convention
values (a bare cache filename, or a RELATIVE jellyfin/emby proxy path). Blazor's
GetPosterUrl prefixes those with "artwork/posters/" against <base href="/">, but
the React SPA renders item.artwork raw as <img src> from under /app/, so every
image 404'd. The handler now returns rooted, directly-usable URLs
(/artwork/posters/... or /artwork/thumbnails/... per ArtworkKind; jellyfin/emby
mapped to their proxy routes with fillHeight/maxHeight; absolute http(s) URLs
passed through; empty stays empty).
Seasons with no poster of their own now fall back to the parent show's poster
(SeasonArtwork + the extra ShowMetadata.Artwork include).
Season drill-in: GET /api/library/browse gains an optional `parentId` query
param that, with mediaType=TelevisionSeason, returns that show's seasons
(season-number order, bypassing Lucene) so the SPA can expand a show into its
seasons. OpenAPI spec regenerated.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
timothyandClaude Fable 5