v1.4.2 - PATCH - Fix playlist caching of empty results

v1.4.2 (2026-06-14)

Fixes

• Empty playlists no longer get cached forever. If a library had no playlists on the first fetch, the empty result was cached and playlists would never appear even after creating new ones. The backend now skips caching when the result is empty, so playlists always show up when they exist (@HabiRabbu)