Fix remaining HiDPI issues: font size and delegate sizeHint

- plugindetailswidget: replace hardcoded 'font-size: 14px' CSS with
  relative font sizing using QFont.setPointSizeF (1.2x base size)
- match_quality_column: derive sizeHint from icon dimensions instead
  of hardcoded QSize(57, 16)

Author: zas

picard/ui/itemviews/match_quality_column.py

@@ -386,5 +386,7 @@ def sizeHint(
         QtCore.QSize
             A size that accommodates both icon and text.
         """
-        # Return a size that accommodates both icon and text
-        return QtCore.QSize(57, 16)
+        # Return a size that accommodates the icon with margin
+        icon_size = 16
+        icon_margin = 2
+        return QtCore.QSize(icon_size + 2 * icon_margin, icon_size)

picard/ui/widgets/plugindetailswidget.py

@@ -61,7 +61,10 @@ def setup_ui(self):
 
         # Plugin name
         self.name_label = QtWidgets.QLabel()
-        self.name_label.setStyleSheet("font-weight: bold; font-size: 14px;")
+        font = self.name_label.font()
+        font.setBold(True)
+        font.setPointSizeF(font.pointSizeF() * 1.2)
+        self.name_label.setFont(font)
         self.name_label.setTextInteractionFlags(QtCore.Qt.TextInteractionFlag.TextSelectableByMouse)
         layout.addWidget(self.name_label)