fix: compact queue item height based on font metrics

Height is now 2 line-heights + 10px padding instead of a fixed 52px,
keeping the two-line layout without wasting vertical space.

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

src/view/queuepanel.cpp

@@ -21,9 +21,10 @@ class QueueDelegate : public QStyledItemDelegate
 public:
     explicit QueueDelegate(QObject *parent = nullptr) : QStyledItemDelegate(parent) {}
 
-    QSize sizeHint(const QStyleOptionViewItem &, const QModelIndex &) const override
+    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &) const override
     {
-        return QSize(0, 52);
+        const int lineH = QFontMetrics(option.font).height();
+        return QSize(0, lineH * 2 + 10);
     }
 
     void paint(QPainter *p, const QStyleOptionViewItem &option,