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* fix(jellyfin): honor Recursive=false for library parents /Items ignored the Recursive parameter entirely — it appeared only in tests, never in production code. Finamp's download sync sends exactly one Recursive=false request per library (ParentId=<library>&IncludeItemTypes=Audio) to pick up tracks outside any album, supplementing its recursive per-album fetch. We answered with every song in the library: 208MB and 21s per sync measured on a real library, against 20KB for the album queries. Finamp then required every track twice, once via its album and once under the library node. In Jellyfin 10.10 Recursive never reaches SQL. It selects between an in-memory walk of a folder's direct Children (false) and a DB ancestor query (true), with IncludeItemTypes applied as a post-filter over that direct-child list (ItemsController.cs:308, Folder.cs:949-994). The default is false, and neither IncludeItemTypes nor SearchTerm forces recursion, so Recursive=false with IncludeItemTypes=Audio on a music library returns an empty list — which is what Finamp expects and codes for. Filter the requested types to those nested directly under a library when the parent is a library and Recursive is not true; the hierarchy this API exposes is library -> album -> track, so no track is ever a library's direct child. Album and playlist parents are untouched, as their tracks are real direct children in Jellyfin (MusicAlbum.cs:86-89, Playlist.cs:140-167) and Jellify opens playlists with Recursive=false. A library parent is the only case handled: /Items with no ParentId still returns every song where Jellyfin returns the root's children, but no observed client sends that, and honoring it would surprise any client that simply omits Recursive. * refactor(jellyfin): narrow the Recursive=false filter to Audio Replace the libraryChildTypes allowlist with a direct Audio check. The two are behaviorally identical — parseTypes only ever yields Audio, MusicArtist, MusicAlbum, MusicGenre or Playlist, and the allowlist held the latter four, so it excluded exactly Audio and nothing else. The allowlist claimed those four are a library's direct children. That isn't true of MusicGenre or Playlist: listGenres is deliberately unscoped because genres are global tags, and listPlaylists ignores scopeIDs entirely, so neither is nested under a library at all. They were on the list only to leave their behavior untouched. The one verified invariant is that no track is a library's direct child, so state just that — it is also more conservative, as a type added later keeps its current behavior instead of being filtered by a stale list. Add a test pinning the omitted-Recursive default: ItemsController binds `bool? recursive` and reads it as `recursive ?? false`, so omitting the param is a non-recursive request and filters Audio for a library parent.