Add quick toggles to the grab bar

Beside the gear: full keyboard, hold keys, and the numeric keypad,
navigation and function key sections, each behind a drawn icon and lit
while on. Section toggles hide when the layout lacks the section. The
grab pill narrows when a small window leaves it less room.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

qml/Main.qml

@@ -65,16 +65,25 @@ Window {
         DragHandle {
             id: handle
             anchors { left: parent.left; right: parent.right; bottom: parent.bottom }
+            pillWidth: Math.min(120, width - 2 * (quickToggles.x + quickToggles.width + 12))
             onDragStarted: root.startSystemMove()
         }
 
         SettingsButton {
+            id: settingsButton
             anchors { left: parent.left; leftMargin: 8; bottom: parent.bottom }
             checked: root.settingsOpen
             alert: root.diagnostics.problems.length > 0
             onClicked: root.settingsOpen = !root.settingsOpen
         }
 
+        QuickToggles {
+            id: quickToggles
+            anchors { left: settingsButton.right; bottom: parent.bottom }
+            settings: root.settings
+            layoutModel: root.layoutModel
+        }
+
         ResizeHandle {
             anchors { right: parent.right; bottom: parent.bottom }
             onDragStarted: root.startSystemResize(Qt.RightEdge | Qt.BottomEdge)