feat: album list, artist list, and artist detail views

- Fav albums: now shows a sortable list (title/artist/year/tracks);
  double-click opens the album
- Fav artists: now shows a sortable list; double-click opens the artist
- Artist detail page: name, biography summary, and their album list
- Rust ArtistDto gains albums field; get_artist fixed to extra=albums only
- Volume popup minimum width set so "100%" label is never clipped

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/CMakeLists.txt

@@ -22,6 +22,9 @@ target_sources(qobuz-qt PRIVATE
     view/context/view.cpp
     view/queuepanel.hpp
     view/queuepanel.cpp
+    view/albumlistview.hpp
+    view/artistlistview.hpp
+    view/artistview.hpp
     view/sidepanel/view.hpp
     view/sidepanel/view.cpp
 

src/mainwindow.cpp

@@ -63,10 +63,11 @@ MainWindow::MainWindow(QobuzBackend *backend, QWidget *parent)
     // ---- Backend signals ----
     connect(m_backend, &QobuzBackend::loginSuccess,   this, &MainWindow::onLoginSuccess);
     connect(m_backend, &QobuzBackend::loginError,     this, &MainWindow::onLoginError);
-    connect(m_backend, &QobuzBackend::favTracksLoaded, this, &MainWindow::onFavTracksLoaded);
-    connect(m_backend, &QobuzBackend::favAlbumsLoaded, this, &MainWindow::onFavAlbumsLoaded);
-    connect(m_backend, &QobuzBackend::albumLoaded,    this, &MainWindow::onAlbumLoaded);
-    connect(m_backend, &QobuzBackend::artistLoaded,   this, &MainWindow::onArtistLoaded);
+    connect(m_backend, &QobuzBackend::favTracksLoaded,  this, &MainWindow::onFavTracksLoaded);
+    connect(m_backend, &QobuzBackend::favAlbumsLoaded,  this, &MainWindow::onFavAlbumsLoaded);
+    connect(m_backend, &QobuzBackend::favArtistsLoaded, this, &MainWindow::onFavArtistsLoaded);
+    connect(m_backend, &QobuzBackend::albumLoaded,      this, &MainWindow::onAlbumLoaded);
+    connect(m_backend, &QobuzBackend::artistLoaded,     this, &MainWindow::onArtistLoaded);
     connect(m_backend, &QobuzBackend::playlistLoaded, this, &MainWindow::onPlaylistLoaded);
     connect(m_backend, &QobuzBackend::trackChanged,   this, &MainWindow::onTrackChanged);
     connect(m_backend, &QobuzBackend::error, this, [this](const QString &msg) {
@@ -104,6 +105,12 @@ MainWindow::MainWindow(QobuzBackend *backend, QWidget *parent)
     connect(m_sidePanel, &SidePanel::View::trackPlayRequested,
             this, &MainWindow::onPlayTrackRequested);
 
+    // ---- Album / artist navigation from content views ----
+    connect(m_content, &MainContent::albumRequested,
+            this, &MainWindow::onSearchAlbumSelected);
+    connect(m_content, &MainContent::artistRequested,
+            this, &MainWindow::onSearchArtistSelected);
+
     // ---- Toolbar toggles ----
     connect(m_toolBar, &MainToolBar::searchToggled, this, &MainWindow::onSearchToggled);
     connect(m_toolBar, &MainToolBar::queueToggled,
@@ -224,9 +231,16 @@ void MainWindow::onFavTracksLoaded(const QJsonObject &result)
 
 void MainWindow::onFavAlbumsLoaded(const QJsonObject &result)
 {
-    const int total = result["total"].toInt();
-    statusBar()->showMessage(tr("%1 favorite albums").arg(total), 4000);
-    // TODO: album grid view
+    m_content->showFavAlbums(result);
+    statusBar()->showMessage(
+        tr("%1 favorite albums").arg(result["total"].toInt()), 4000);
+}
+
+void MainWindow::onFavArtistsLoaded(const QJsonObject &result)
+{
+    m_content->showFavArtists(result);
+    statusBar()->showMessage(
+        tr("%1 favorite artists").arg(result["total"].toInt()), 4000);
 }
 
 void MainWindow::onAlbumLoaded(const QJsonObject &album)
@@ -238,9 +252,9 @@ void MainWindow::onAlbumLoaded(const QJsonObject &album)
 
 void MainWindow::onArtistLoaded(const QJsonObject &artist)
 {
+    m_content->showArtist(artist);
     statusBar()->showMessage(
         tr("Artist: %1").arg(artist["name"].toString()), 4000);
-    // TODO: artist view
 }
 
 void MainWindow::onPlaylistLoaded(const QJsonObject &playlist)

src/mainwindow.hpp

@@ -27,6 +27,7 @@ private slots:
 
     void onFavTracksLoaded(const QJsonObject &result);
     void onFavAlbumsLoaded(const QJsonObject &result);
+    void onFavArtistsLoaded(const QJsonObject &result);
     void onAlbumLoaded(const QJsonObject &album);
     void onArtistLoaded(const QJsonObject &artist);
     void onPlaylistLoaded(const QJsonObject &playlist);

src/view/albumlistview.hpp

@@ -0,0 +1,61 @@
+#pragma once
+
+#include <QTreeWidget>
+#include <QTreeWidgetItem>
+#include <QHeaderView>
+#include <QJsonObject>
+#include <QJsonArray>
+
+/// A simple list of albums (used for fav albums and artist detail pages).
+/// Double-clicking an item emits albumSelected(albumId).
+class AlbumListView : public QTreeWidget
+{
+    Q_OBJECT
+
+public:
+    explicit AlbumListView(QWidget *parent = nullptr) : QTreeWidget(parent)
+    {
+        setColumnCount(4);
+        setHeaderLabels({tr("Title"), tr("Artist"), tr("Year"), tr("Tracks")});
+        setRootIsDecorated(false);
+        setAlternatingRowColors(true);
+        setSelectionBehavior(QAbstractItemView::SelectRows);
+        setSortingEnabled(true);
+
+        header()->setStretchLastSection(false);
+        header()->setSectionResizeMode(0, QHeaderView::Stretch);
+        header()->setSectionResizeMode(1, QHeaderView::Stretch);
+        header()->setSectionResizeMode(2, QHeaderView::ResizeToContents);
+        header()->setSectionResizeMode(3, QHeaderView::ResizeToContents);
+
+        connect(this, &QTreeWidget::itemDoubleClicked,
+                this, [this](QTreeWidgetItem *item, int) {
+            const QString id = item->data(0, Qt::UserRole).toString();
+            if (!id.isEmpty()) emit albumSelected(id);
+        });
+    }
+
+    void setAlbums(const QJsonArray &albums)
+    {
+        clear();
+        for (const auto &v : albums) {
+            const QJsonObject a  = v.toObject();
+            const QString id     = a["id"].toString();
+            const QString title  = a["title"].toString();
+            const QString artist = a["artist"].toObject()["name"].toString();
+            const QString date   = a["release_date_original"].toString();
+            const QString year   = date.left(4);
+            const int tracks     = a["tracks_count"].toInt();
+
+            auto *item = new QTreeWidgetItem(this);
+            item->setText(0, title);
+            item->setText(1, artist);
+            item->setText(2, year);
+            item->setText(3, tracks > 0 ? QString::number(tracks) : QString());
+            item->setData(0, Qt::UserRole, id);
+        }
+    }
+
+signals:
+    void albumSelected(const QString &albumId);
+};

src/view/artistlistview.hpp

@@ -0,0 +1,53 @@
+#pragma once
+
+#include <QTreeWidget>
+#include <QTreeWidgetItem>
+#include <QHeaderView>
+#include <QJsonObject>
+#include <QJsonArray>
+
+/// A simple list of artists.
+/// Double-clicking an item emits artistSelected(artistId).
+class ArtistListView : public QTreeWidget
+{
+    Q_OBJECT
+
+public:
+    explicit ArtistListView(QWidget *parent = nullptr) : QTreeWidget(parent)
+    {
+        setColumnCount(2);
+        setHeaderLabels({tr("Artist"), tr("Albums")});
+        setRootIsDecorated(false);
+        setAlternatingRowColors(true);
+        setSelectionBehavior(QAbstractItemView::SelectRows);
+
+        header()->setStretchLastSection(false);
+        header()->setSectionResizeMode(0, QHeaderView::Stretch);
+        header()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
+
+        connect(this, &QTreeWidget::itemDoubleClicked,
+                this, [this](QTreeWidgetItem *item, int) {
+            const qint64 id = item->data(0, Qt::UserRole).toLongLong();
+            if (id > 0) emit artistSelected(id);
+        });
+    }
+
+    void setArtists(const QJsonArray &artists)
+    {
+        clear();
+        for (const auto &v : artists) {
+            const QJsonObject a = v.toObject();
+            const qint64 id     = static_cast<qint64>(a["id"].toDouble());
+            const QString name  = a["name"].toString();
+            const int albums    = a["albums_count"].toInt();
+
+            auto *item = new QTreeWidgetItem(this);
+            item->setText(0, name);
+            item->setText(1, albums > 0 ? QString::number(albums) : QString());
+            item->setData(0, Qt::UserRole, id);
+        }
+    }
+
+signals:
+    void artistSelected(qint64 artistId);
+};

src/view/artistview.hpp

@@ -0,0 +1,64 @@
+#pragma once
+
+#include "albumlistview.hpp"
+
+#include <QWidget>
+#include <QVBoxLayout>
+#include <QLabel>
+#include <QFont>
+#include <QJsonObject>
+#include <QJsonArray>
+
+/// Artist detail page: name, biography summary, and their album list.
+class ArtistView : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit ArtistView(QWidget *parent = nullptr) : QWidget(parent)
+    {
+        auto *layout = new QVBoxLayout(this);
+        layout->setContentsMargins(8, 8, 8, 8);
+        layout->setSpacing(6);
+
+        m_nameLabel = new QLabel(this);
+        QFont f = m_nameLabel->font();
+        f.setPointSize(f.pointSize() + 4);
+        f.setBold(true);
+        m_nameLabel->setFont(f);
+
+        m_bioLabel = new QLabel(this);
+        m_bioLabel->setWordWrap(true);
+        m_bioLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
+        m_bioLabel->setMaximumHeight(80);
+
+        m_albums = new AlbumListView(this);
+
+        layout->addWidget(m_nameLabel);
+        layout->addWidget(m_bioLabel);
+        layout->addWidget(m_albums, 1);
+
+        connect(m_albums, &AlbumListView::albumSelected,
+                this, &ArtistView::albumSelected);
+    }
+
+    void setArtist(const QJsonObject &artist)
+    {
+        m_nameLabel->setText(artist["name"].toString());
+
+        const QString summary = artist["biography"].toObject()["summary"].toString();
+        m_bioLabel->setText(summary);
+        m_bioLabel->setVisible(!summary.isEmpty());
+
+        const QJsonArray albums = artist["albums"].toObject()["items"].toArray();
+        m_albums->setAlbums(albums);
+    }
+
+signals:
+    void albumSelected(const QString &albumId);
+
+private:
+    QLabel        *m_nameLabel = nullptr;
+    QLabel        *m_bioLabel  = nullptr;
+    AlbumListView *m_albums    = nullptr;
+};

src/view/maincontent.cpp

@@ -19,12 +19,22 @@ MainContent::MainContent(QobuzBackend *backend, PlayQueue *queue, QWidget *paren
         this);
     m_welcome->setAlignment(Qt::AlignCenter);
 
-    m_tracks = new List::Tracks(m_backend, queue, this);
+    m_tracks     = new List::Tracks(m_backend, queue, this);
+    m_albumList  = new AlbumListView(this);
+    m_artistList = new ArtistListView(this);
+    m_artistView = new ArtistView(this);
 
-    m_stack->addWidget(m_welcome);   // 0
-    m_stack->addWidget(m_tracks);    // 1
+    m_stack->addWidget(m_welcome);    // 0
+    m_stack->addWidget(m_tracks);     // 1
+    m_stack->addWidget(m_albumList);  // 2
+    m_stack->addWidget(m_artistList); // 3
+    m_stack->addWidget(m_artistView); // 4
 
     m_stack->setCurrentIndex(0);
+
+    connect(m_albumList,  &AlbumListView::albumSelected,   this, &MainContent::albumRequested);
+    connect(m_artistList, &ArtistListView::artistSelected, this, &MainContent::artistRequested);
+    connect(m_artistView, &ArtistView::albumSelected,      this, &MainContent::albumRequested);
 }
 
 void MainContent::showWelcome()       { m_stack->setCurrentIndex(0); }
@@ -52,3 +62,21 @@ void MainContent::showSearchTracks(const QJsonArray &tracks)
     m_tracks->loadSearchTracks(tracks);
     m_stack->setCurrentIndex(1);
 }
+
+void MainContent::showFavAlbums(const QJsonObject &result)
+{
+    m_albumList->setAlbums(result["items"].toArray());
+    m_stack->setCurrentIndex(2);
+}
+
+void MainContent::showFavArtists(const QJsonObject &result)
+{
+    m_artistList->setArtists(result["items"].toArray());
+    m_stack->setCurrentIndex(3);
+}
+
+void MainContent::showArtist(const QJsonObject &artist)
+{
+    m_artistView->setArtist(artist);
+    m_stack->setCurrentIndex(4);
+}

src/view/maincontent.hpp

@@ -3,6 +3,9 @@
 #include "../list/tracks.hpp"
 #include "../backend/qobuzbackend.hpp"
 #include "../playqueue.hpp"
+#include "albumlistview.hpp"
+#include "artistlistview.hpp"
+#include "artistview.hpp"
 
 #include <QWidget>
 #include <QLabel>
@@ -24,10 +27,20 @@ public:
     void showPlaylist(const QJsonObject &playlist);
     void showFavTracks(const QJsonObject &result);
     void showSearchTracks(const QJsonArray &tracks);
+    void showFavAlbums(const QJsonObject &result);
+    void showFavArtists(const QJsonObject &result);
+    void showArtist(const QJsonObject &artist);
+
+signals:
+    void albumRequested(const QString &albumId);
+    void artistRequested(qint64 artistId);
 
 private:
-    QobuzBackend   *m_backend = nullptr;
-    QStackedWidget *m_stack   = nullptr;
-    QLabel         *m_welcome = nullptr;
-    List::Tracks   *m_tracks  = nullptr;
+    QobuzBackend   *m_backend    = nullptr;
+    QStackedWidget *m_stack      = nullptr;
+    QLabel         *m_welcome    = nullptr;
+    List::Tracks   *m_tracks     = nullptr;
+    AlbumListView  *m_albumList  = nullptr;
+    ArtistListView *m_artistList = nullptr;
+    ArtistView     *m_artistView = nullptr;
 };

src/widget/volumebutton.hpp

@@ -22,6 +22,7 @@ public:
 
         auto *menu   = new QMenu(this);
         auto *widget = new QWidget(menu);
+        widget->setMinimumWidth(72);
         auto *layout = new QVBoxLayout(widget);
         layout->setContentsMargins(6, 6, 6, 6);