[bugfix]: Handle top-level songs for Jellyfin (#553)

* [bugfix]: Handle top-level songs for Jellyfin

If a song is at the top level of a music folder, Jellyfin will not
group that into an album (See https://jellyfin.org/docs/general/server/media/music/).

This PR introduces a few changes:
- Gives tracks with no album ID a special route (`/dummy/${id}`)
- Gives a new route for dummy albums, warning about the error. This is designed to look _like_ the album detail page

* `are are` > `are`

* revert name changes

src/renderer/api/jellyfin/jellyfin-api.ts

@@ -185,6 +185,15 @@ export const contract = c.router({
             400: jfType._response.error,
         },
     },
+    getSongData: {
+        method: 'GET',
+        path: 'users/:userId/items/:id',
+        query: jfType._parameters.songDetail,
+        responses: {
+            200: jfType._response.song,
+            400: jfType._response.error,
+        },
+    },
     getSongDetail: {
         method: 'GET',
         path: 'users/:userId/items/:id',

src/renderer/api/jellyfin/jellyfin-normalize.ts

@@ -134,7 +134,7 @@ const normalizeSong = (
             imageUrl: null,
             name: entry.Name,
         })),
-        albumId: item.AlbumId,
+        albumId: item.AlbumId || `dummy/${item.Id}`,
         artistName: item?.ArtistItems?.[0]?.Name,
         artists: item?.ArtistItems?.map((entry) => ({
             id: entry.Id,

src/renderer/api/jellyfin/jellyfin-types.ts

@@ -387,11 +387,13 @@ const genericItem = z.object({
     Name: z.string(),
 });
 
+const songDetailParameters = baseParameters;
+
 const song = z.object({
     Album: z.string(),
     AlbumArtist: z.string(),
     AlbumArtists: z.array(genericItem),
-    AlbumId: z.string(),
+    AlbumId: z.string().optional(),
     AlbumPrimaryImageTag: z.string(),
     ArtistItems: z.array(genericItem),
     Artists: z.array(z.string()),
@@ -709,6 +711,7 @@ export const jfType = {
         search: searchParameters,
         similarArtistList: similarArtistListParameters,
         similarSongs: similarSongsParameters,
+        songDetail: songDetailParameters,
         songList: songListParameters,
         updatePlaylist: updatePlaylistParameters,
     },