Middle-button pan, persistent tool settings, Auto Select's foreground rule, the new icon (12.6b)

src/Document/EditorSession.cpp

@@ -318,6 +318,7 @@ void EditorSession::zoom(double value, std::optional<QPointF> anchor)
 void EditorSession::setShowsPixelGrid(bool shows)
 {
     m_showsPixelGrid = shows;
+    ToolDefaults::set(shows, QStringLiteral("pixelGrid"));
     notify();
 }