feat(notifications): introduce notification foreground layers settings override

port 1.5

(cherry picked from commit 3c688cfbd3)

quickshell/Modules/Notifications/Center/HistoryNotificationCard.qml

@@ -49,7 +49,7 @@ Rectangle {
     color: {
         if (isSelected && keyboardNavigationActive)
             return Theme.primaryPressed;
-        return Theme.floatingSurfaceHigh;
+        return Theme.notificationFloatingSurfaceHigh;
     }
     border.color: {
         if (isSelected && keyboardNavigationActive)

quickshell/Modules/Notifications/Center/NotificationCard.qml

@@ -153,7 +153,7 @@ Rectangle {
         if (keyboardNavigationActive && expanded && selectedNotificationIndex >= 0) {
             return Theme.primaryHoverLight;
         }
-        return Theme.floatingSurfaceHigh;
+        return Theme.notificationFloatingSurfaceHigh;
     }
     border.color: {
         if (isGroupSelected && keyboardNavigationActive) {
@@ -583,7 +583,7 @@ Rectangle {
                             return expandedBaseHeight;
                         }
                         radius: Theme.cornerRadius
-                        color: isSelected ? Theme.primaryPressed : Theme.nestedSurface
+                        color: isSelected ? Theme.primaryPressed : Theme.notificationNestedSurface
                         border.color: isSelected ? Theme.withAlpha(Theme.primary, 0.4) : Theme.outlineMedium
                         border.width: 1
 

quickshell/Modules/Notifications/Popup/NotificationPopup.qml

@@ -676,7 +676,7 @@ PanelWindow {
             sourceWidth: Math.max(0, content.width - (content.cardInset * 2))
             sourceHeight: Math.max(0, content.height - (content.cardInset * 2))
             targetRadius: win.connectedFrameMode ? Theme.connectedSurfaceRadius : Theme.cornerRadius
-            targetColor: win.connectedFrameMode ? Theme.floatingSurface : Theme.readableSurface
+            targetColor: win.connectedFrameMode ? Theme.notificationFloatingSurface : Theme.readableSurface
             borderColor: win.notificationData && win.notificationData.urgency === NotificationUrgency.Critical ? Theme.withAlpha(Theme.primary, 0.3) : Theme.withAlpha(Theme.outline, 0.08)
             borderWidth: win.notificationData && win.notificationData.urgency === NotificationUrgency.Critical ? 2 : 0
         }

quickshell/Modules/Settings/NotificationsTab.qml

@@ -300,6 +300,15 @@ Item {
                     onToggled: checked => SettingsData.set("notificationCompactMode", checked)
                 }
 
+                SettingsToggleRow {
+                    settingKey: "notificationForegroundLayers"
+                    tags: ["notification", "foreground", "layers", "surface", "blur", "glass", "contrast", "cards"]
+                    text: I18n.tr("Foreground Layers")
+                    description: I18n.tr("Show foreground surfaces on notification cards")
+                    checked: SettingsData.notificationForegroundLayers ?? true
+                    onToggled: checked => SettingsData.set("notificationForegroundLayers", checked)
+                }
+
                 SettingsToggleRow {
                     settingKey: "notificationShowTimeoutBar"
                     tags: ["notification", "timeout", "progress", "bar", "timer", "countdown"]