initial scaffold

src/types/library.ts

@@ -0,0 +1,42 @@
+// Library row types — a mobile subset of desktop `DbTrack` (libraryStore.ts).
+// SQLite-backed scanning lands at M1; this shape lets the store/UI be typed now.
+
+export type TrackSourceType = 'local' | 'subsonic' | 'jellyfin';
+
+export interface DbTrack {
+  id: number;
+  path: string;
+  title: string;
+  artist: string;
+  album: string;
+  album_artist: string | null;
+  duration: number;
+  track_number: number | null;
+  disc_number: number | null;
+  year: number | null;
+  genre: string | null;
+  artwork_hash: string | null;
+  format: string;
+  sample_rate: number | null;
+  bit_depth: number | null;
+  bitrate: number | null;
+  channels: number | null;
+  codec: string | null;
+  source_type: TrackSourceType;
+  added_at: number;
+}
+
+export interface Album {
+  identity_key: string;
+  album: string;
+  artist: string;
+  year: number | null;
+  artwork_hash: string | null;
+  track_count: number;
+}
+
+export interface Artist {
+  artist: string;
+  track_count: number;
+  artwork_hash: string | null;
+}