Wires qbz-library into the Slint app (new library_db module) so the
local, Tauri-shared organization data is read/written from the same
per-user library.db (<data_dir>/qbz/users/<id>/library.db). The DB is
opened per-operation on a blocking thread (rusqlite Connection is
!Send).
- Header collage: the playlist cover is now a 4-up collage of the
first tracks' covers (Tauri parity); falls back to the server
image, then the first track, then a placeholder.
- Custom artwork: owner-only buttons on the cover set/clear a custom
image. Set copies the picked file into <cache_dir>/qbz/artwork and
stores the path in playlist_settings.custom_artwork_path (shared
with Tauri); it's loaded directly from disk and overrides the
collage.
- Edit description: the edit modal gains a description field
(prefilled), saved through update_playlist alongside the name.
cc
Completes playlist CRUD. The detail header shows an edit button only
for the user's own playlists (is-owner = the open id is in the sidebar
list); it opens an EditPlaylistModal:
- Save -> update_playlist (rename); refreshes the detail header name
and the sidebar list.
- Delete -> delete_playlist; closes the modal, navigates back, and
refreshes the sidebar.
Adds the pen-line icon (Lucide) used by the edit button.
cc
vicrodh