Wires the artist network sidebar's Labels section to a real
destination. Mirrors Tauri's LabelReleasesView.svelte core: a label
header (image + name + release count) over a wrapping album grid
with load-more pagination. (Sort / filter Hi-Res / group-by-artist
from the Tauri view are deferred — the core browse experience is in.)
Slint:
- ContentView gains `label`; NavEntry mirrors with
`Label { id, name }`.
- LabelState / LabelActions globals carry the header (id, name,
image-url + decoded image) and the AlbumCardItem grid + total.
- New `ui/label/LabelReleasesView.slint`: label header card,
then the same absolute-position album grid + load-more pattern
the artist/musician views use. Reuses the Discover AlbumCard
(artist-as-subtitle is correct here — a label's catalog is
various artists).
- AppShell routes ContentView.label and forwards open-album +
media-action.
Rust:
- `crate::label` controller — load_label (parallel-ish
get_label_page + get_label_albums), load_more_albums,
apply_label, append_albums, apply_image (label header), and
artwork_jobs. extract_label_image handles the flexible
/label/page image value (string or mega/extralarge/.../small
object), same precedence as the Svelte.
- artwork::ArtworkTarget gains LabelAlbum { index }.
- main.rs: navigate_label + apply_entry route + on_label_clicked
(sidebar) + LabelActions::on_load_more.
- No new qbz-core methods — get_label_page / get_label_albums
already existed.
cc