fix: sorting never changes the queue

Removed the sortApplied→syncQueueToModel connection. Sorting the track
list only reorders the view; the queue is only set when a track is
actually played (double-click or Play Now), at which point the current
sorted order and clicked row are used.

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

src/list/tracks.cpp

@@ -35,10 +35,6 @@ Tracks::Tracks(QobuzBackend *backend, PlayQueue *queue, QWidget *parent)
     connect(this, &QTreeView::customContextMenuRequested,
             this, &Tracks::onContextMenu);
 
-    // Re-sync queue order whenever the model is re-sorted (user clicked header
-    // or setTracks re-applied an existing sort).
-    connect(m_model, &TrackListModel::sortApplied,
-            this, &Tracks::syncQueueToModel);
 }
 
 void Tracks::loadTracks(const QJsonArray &tracks)
@@ -65,14 +61,9 @@ void Tracks::loadSearchTracks(const QJsonArray &tracks)
 
 void Tracks::setPlayingTrackId(qint64 id)
 {
-    m_playingId = id;
     m_model->setPlayingId(id);
 }
 
-void Tracks::syncQueueToModel()
-{
-    m_queue->reorderContext(m_model->currentTracksJson(), m_playingId);
-}
 
 void Tracks::onDoubleClicked(const QModelIndex &index)
 {

src/list/tracks.hpp

@@ -32,10 +32,8 @@ namespace List
         TrackListModel *m_model   = nullptr;
         QobuzBackend   *m_backend = nullptr;
         PlayQueue      *m_queue   = nullptr;
-        qint64          m_playingId = 0;
 
         void onDoubleClicked(const QModelIndex &index);
         void onContextMenu(const QPoint &pos);
-        void syncQueueToModel();
     };
 }