feat(discover): Most Played Albums carousel in Home + For You

Wires the rail (top-20 by play count) into both tabs, mirroring the favoriteAlbums pattern: HomeState/ForYouState.most-played-albums DiscoverSection; foryou::most_played_album_cards maps the ranked rows onto AlbumCard; home.rs builds it inline (local, no fetch) and For You rides the favorites branch; HomeMostPlayedAlbum/ForYouMostPlayedAlbum artwork targets + apply arms; render arms in HomeView/ForYouView (self-hide while empty); title in 8 locales. slintcheck green. View-all page (search + play count) is the next increment.

cc

crates/qbz-ui/translations/de/LC_MESSAGES/qbz-ui.po

@@ -4519,3 +4519,7 @@ msgstr "Gibt zwischengespeicherte Daten frei. Deine heruntergeladenen Alben blei
 msgid "Couldn't clear the cache"
 msgstr "Cache konnte nicht geleert werden"
 
+
+# Most Played Albums rail title
+msgid "Most Played Albums"
+msgstr "Meistgespielte Alben"

crates/qbz-ui/translations/en/LC_MESSAGES/qbz-ui.po

@@ -291,3 +291,7 @@ msgstr "Cache cleared"
 msgid "Couldn't clear the cache"
 msgstr "Couldn't clear the cache"
 
+
+# Most Played Albums rail title
+msgid "Most Played Albums"
+msgstr "Most Played Albums"

crates/qbz-ui/translations/es/LC_MESSAGES/qbz-ui.po

@@ -4549,3 +4549,7 @@ msgstr "Libera datos en caché. Tus álbumes descargados se conservan — elimí
 msgid "Couldn't clear the cache"
 msgstr "No se pudo limpiar el caché"
 
+
+# Most Played Albums rail title
+msgid "Most Played Albums"
+msgstr "Álbumes más escuchados"

crates/qbz-ui/translations/fr/LC_MESSAGES/qbz-ui.po

@@ -4519,3 +4519,7 @@ msgstr "Libère les données en cache. Vos albums téléchargés sont conservés
 msgid "Couldn't clear the cache"
 msgstr "Impossible de vider le cache"
 
+
+# Most Played Albums rail title
+msgid "Most Played Albums"
+msgstr "Albums les plus écoutés"

crates/qbz-ui/translations/ja/LC_MESSAGES/qbz-ui.po

@@ -4508,3 +4508,7 @@ msgstr "キャッシュデータを解放します。ダウンロード済みの
 msgid "Couldn't clear the cache"
 msgstr "キャッシュを削除できませんでした"
 
+
+# Most Played Albums rail title
+msgid "Most Played Albums"
+msgstr "最も再生したアルバム"

crates/qbz-ui/translations/nl/LC_MESSAGES/qbz-ui.po

@@ -4531,3 +4531,7 @@ msgstr "Maakt cachegegevens vrij. Je gedownloade albums blijven behouden — ver
 msgid "Couldn't clear the cache"
 msgstr "Kan de cache niet wissen"
 
+
+# Most Played Albums rail title
+msgid "Most Played Albums"
+msgstr "Meest afgespeelde albums"

crates/qbz-ui/translations/pt/LC_MESSAGES/qbz-ui.po

@@ -4519,3 +4519,7 @@ msgstr "Libera dados em cache. Seus álbuns baixados são mantidos — remova-os
 msgid "Couldn't clear the cache"
 msgstr "Não foi possível limpar o cache"
 
+
+# Most Played Albums rail title
+msgid "Most Played Albums"
+msgstr "Álbuns mais tocados"

crates/qbz-ui/translations/ru/LC_MESSAGES/qbz-ui.po

@@ -4532,3 +4532,7 @@ msgstr "Освобождает кэшированные данные. Загру
 msgid "Couldn't clear the cache"
 msgstr "Не удалось очистить кэш"
 
+
+# Most Played Albums rail title
+msgid "Most Played Albums"
+msgstr "Самые прослушиваемые альбомы"

crates/qbz-ui/ui/discover/ForYouView.slint

@@ -129,6 +129,17 @@ export component ForYouView inherits VerticalLayout {
             }
         }
 
+        // mostPlayedAlbums — album carousel ranked by local play count.
+        if desc.id == "mostPlayedAlbums" && ForYouState.most-played-albums.albums.length > 0: Carousel {
+            section: ForYouState.most-played-albums;
+            album-clicked(id) => {
+                root.open-album(id);
+            }
+            media-action(kind, id, action) => {
+                root.media-action(kind, id, action);
+            }
+        }
+
         // similarAlbums — "More From Your Library" album carousel.
         if desc.id == "similarAlbums" && ForYouState.more-from-library.albums.length > 0: Carousel {
             section: ForYouState.more-from-library;

crates/qbz-ui/ui/discover/HomeView.slint

@@ -482,6 +482,19 @@ export component HomeView inherits Rectangle {
                         }
                     }
 
+                    // Most Played Albums — album carousel ranked by local play
+                    // count. Self-hides while empty (default-off section).
+                    if desc.id == "mostPlayedAlbums"
+                        && HomeState.most-played-albums.albums.length > 0: Carousel {
+                        section: HomeState.most-played-albums;
+                        album-clicked(id) => {
+                            root.album-clicked(id);
+                        }
+                        media-action(kind, id, action) => {
+                            root.media-action(kind, id, action);
+                        }
+                    }
+
                     // Qobuz Mixes (#566) — static navigation tiles, ALWAYS
                     // rendered when enabled (no data gate; 1:1 with the For
                     // You arm and Tauri Home).

crates/qbz-ui/ui/state.slint

@@ -180,6 +180,9 @@ export global HomeState {
     // reorders HomeState.favorite-albums in place when this changes.
     in-out property <int> library-albums-sort: 0;
     in property <DiscoverSection> release-watch;
+    // Most Played Albums rail — top albums by local play count (title set by
+    // Rust from `album_play_history::top_albums`). Self-hides while empty.
+    in property <DiscoverSection> most-played-albums;
     in property <[SlimItem]> top-artists: [];
     // Qobuz Playlists row (Home + Editor's Picks). Single-cover cards; the
     // active tab's set is swapped in by crate::home::select_tab.
@@ -344,6 +347,9 @@ export global ForYouState {
     in property <DiscoverSection> recent-albums;
     // Favorite Albums — the user's favorited albums (For You #6).
     in property <DiscoverSection> favorite-albums;
+    // Most Played Albums — top albums by local play count (same data as
+    // HomeState.most-played-albums; local, not tab-specific).
+    in property <DiscoverSection> most-played-albums;
     in property <[SlimItem]> recent-tracks: [];
     in property <[SlimItem]> top-artists: [];
     in property <[SlimItem]> artists-to-follow: [];

crates/qbz/src/artwork.rs

@@ -74,6 +74,9 @@ pub enum ArtworkTarget {
     /// "Library Albums" rail (#566). Separate from `ForYouFavoriteAlbum`:
     /// the two rails share the data pipeline but not the model lifecycle.
     HomeFavoriteAlbum { idx: usize },
+    /// A card in `HomeState.most-played-albums.albums[idx]` — the Home tab's
+    /// "Most Played Albums" rail (local play-count ranking).
+    HomeMostPlayedAlbum { idx: usize },
     /// A card in `HomeState.release-watch.albums[idx]` — the Home tab's
     /// "Release Watch" rail (#566; ForYouReleaseWatch's Home twin).
     HomeReleaseWatchAlbum { idx: usize },
@@ -218,6 +221,8 @@ pub enum ArtworkTarget {
     ExtRecoWeeklyJams { index: usize },
     /// A card in ForYouState.favorite-albums.albums[index].
     ForYouFavoriteAlbum { index: usize },
+    /// A card in ForYouState.most-played-albums.albums[index].
+    ForYouMostPlayedAlbum { index: usize },
     /// The Spotlight artist portrait.
     ForYouSpotlightArtist,
     /// A card in ForYouState.spotlight-albums[index].
@@ -949,6 +954,14 @@ fn apply_artwork(
             item.artwork = image;
             section.albums.set_row_data(idx, item);
         }
+        ArtworkTarget::HomeMostPlayedAlbum { idx } => {
+            let section = home.get_most_played_albums();
+            let Some(mut item) = section.albums.row_data(idx) else {
+                return;
+            };
+            item.artwork = image;
+            section.albums.set_row_data(idx, item);
+        }
         ArtworkTarget::HomeReleaseWatchAlbum { idx } => {
             let section = home.get_release_watch();
             let Some(mut item) = section.albums.row_data(idx) else {
@@ -1544,6 +1557,13 @@ fn apply_artwork(
                 model.set_row_data(index, item);
             }
         }
+        ArtworkTarget::ForYouMostPlayedAlbum { index } => {
+            let model = window.global::<crate::ForYouState>().get_most_played_albums().albums;
+            if let Some(mut item) = model.row_data(index) {
+                item.artwork = image;
+                model.set_row_data(index, item);
+            }
+        }
         ArtworkTarget::ForYouSpotlightArtist => {
             window
                 .global::<crate::ForYouState>()

crates/qbz/src/discover_prefs.rs

@@ -151,9 +151,8 @@ pub fn render_kind(id: DiscoverySectionId) -> &'static str {
         RadioStations => "radio",
         TopArtists | ArtistsToFollow => "artistCarousel",
         ArtistSpotlight => "spotlight",
-        ReleaseWatch | FavoriteAlbums | SimilarAlbums | RediscoverLibrary | EssentialsByGenre => {
-            "albumCarousel"
-        }
+        ReleaseWatch | FavoriteAlbums | MostPlayedAlbums | SimilarAlbums | RediscoverLibrary
+        | EssentialsByGenre => "albumCarousel",
     }
 }
 
@@ -189,6 +188,7 @@ pub fn label_for(id: DiscoverySectionId) -> &'static str {
         EssentialsByGenre => qbz_i18n::mark("Essentials by Genre"), // discovery.essentialsByGenre
         ArtistsToFollow => qbz_i18n::mark("Artists to Follow"), // discovery.artistsToFollow
         ArtistSpotlight => qbz_i18n::mark("Artist Spotlight"), // discovery.artistSpotlight
+        MostPlayedAlbums => qbz_i18n::mark("Most Played Albums"), // local: most-played rail
     }
 }
 

crates/qbz/src/foryou.rs

@@ -492,6 +492,25 @@ where
     build_favorite_albums(&fav_albums)
 }
 
+/// Cards for the "Most Played Albums" rail — top 20 albums by local play
+/// count (`album_play_history`). Local (no network); the SAME set feeds Home
+/// and For You. Ranked rows map 1:1 onto `AlbumCard`.
+pub(crate) fn most_played_album_cards() -> Vec<AlbumCard> {
+    qbz_app::settings::album_play_history::top_albums(20)
+        .into_iter()
+        .map(|r| AlbumCard {
+            id: r.album_id,
+            title: r.title,
+            artist: r.artist,
+            artist_id: r.artist_id,
+            year: r.year,
+            quality_tier: r.quality_tier,
+            quality_label: r.quality_label,
+            artwork_url: r.artwork_url,
+        })
+        .collect()
+}
+
 /// Radio Stations — album-seeded tiles from recent + favorite albums,
 /// deduped, capped at 12.
 fn build_radio(
@@ -756,6 +775,16 @@ fn apply_favorite_albums(weak: &slint::Weak<AppWindow>, cache: &ImageCache, card
     crate::artwork::spawn_loads(jobs, weak.clone(), cache.clone());
 }
 
+fn apply_most_played_albums(weak: &slint::Weak<AppWindow>, cache: &ImageCache, cards: Vec<AlbumCard>) {
+    let jobs = album_jobs(&cards, |i| ArtworkTarget::ForYouMostPlayedAlbum { index: i });
+    let w = weak.clone();
+    let _ = w.upgrade_in_event_loop(move |w| {
+        w.global::<ForYouState>()
+            .set_most_played_albums(section(&qbz_i18n::t("Most Played Albums"), &cards));
+    });
+    crate::artwork::spawn_loads(jobs, weak.clone(), cache.clone());
+}
+
 fn apply_more_from_library(
     weak: &slint::Weak<AppWindow>,
     cache: &ImageCache,
@@ -933,6 +962,9 @@ pub fn spawn_for_you<A>(
                 let scored_fav = crate::reco::scored_favorite_album_ids(80);
                 let fav_albums = order_by_score(fav_albums, scored_fav.as_deref());
                 apply_favorite_albums(&weak, &cache, build_favorite_albums(&fav_albums));
+                // Most Played Albums — local play-count rail (no fetch); rides
+                // this branch since it shares the cache + weak already cloned.
+                apply_most_played_albums(&weak, &cache, most_played_album_cards());
                 // reco: backfill genres for the resolved favorite albums so the
                 // engine's top-genres has data (plays alone carry no genre).
                 let genre_entries: Vec<(String, u64, String)> = fav_albums

crates/qbz/src/home.rs

@@ -52,6 +52,10 @@ pub struct HomeData {
     /// fourth ported Tauri-Home section, is static navigation tiles — no
     /// data field needed.)
     pub top_artists: Vec<crate::foryou::ArtistSlim>,
+    /// "Most Played Albums" rail — top albums by local play count
+    /// (`album_play_history`). Local, so built inline (no fetch). Feeds
+    /// `HomeState.most-played-albums`; self-hides while empty.
+    pub most_played_albums: Vec<crate::foryou::AlbumCard>,
 }
 
 thread_local! {
@@ -319,6 +323,7 @@ where
         favorite_albums,
         release_watch,
         top_artists,
+        most_played_albums: crate::foryou::most_played_album_cards(),
     })
 }
 
@@ -778,6 +783,7 @@ const HOME_RENDERABLE: &[DiscoverySectionId] = &[
     DiscoverySectionId::QobuzMixes,
     DiscoverySectionId::ReleaseWatch,
     DiscoverySectionId::TopArtists,
+    DiscoverySectionId::MostPlayedAlbums,
 ];
 
 /// Build one tab's ordered ENABLED descriptor list from `prefs` + the cached
@@ -1097,6 +1103,10 @@ pub fn apply_home(window: &AppWindow, data: HomeData) {
         &qbz_i18n::t("Release Watch"),
         &data.release_watch,
     ));
+    state.set_most_played_albums(crate::foryou::section(
+        &qbz_i18n::t("Most Played Albums"),
+        &data.most_played_albums,
+    ));
     state.set_top_artists(ModelRc::new(VecModel::from(crate::foryou::artist_items(
         &data.top_artists,
     ))));

crates/qbz/src/main.rs

@@ -753,6 +753,12 @@ async fn reload_home(
                     url: card.artwork_url.clone(),
                 })
             }));
+            jobs.extend(data.most_played_albums.iter().enumerate().filter_map(|(idx, card)| {
+                (!card.artwork_url.is_empty()).then(|| artwork::ArtworkJob {
+                    target: artwork::ArtworkTarget::HomeMostPlayedAlbum { idx },
+                    url: card.artwork_url.clone(),
+                })
+            }));
             jobs.extend(data.release_watch.iter().enumerate().filter_map(|(idx, card)| {
                 (!card.artwork_url.is_empty()).then(|| artwork::ArtworkJob {
                     target: artwork::ArtworkTarget::HomeReleaseWatchAlbum { idx },