MatugenService: add check for Settings.isLoaded

Services/MatugenService.qml

@@ -47,6 +47,11 @@ Singleton {
 
   // Generate colors using current wallpaper and settings
   function generateFromWallpaper() {
+    if (!Settings.isLoaded) {
+      Logger.log("Matugen", "Settings not loaded yet, skipping wallpaper color generation")
+      return
+    }
+
     Logger.log("Matugen", "Generating from wallpaper on screen:", Screen.name)
     var wp = WallpaperService.getWallpaper(Screen.name).replace(/'/g, "'\\''")
     if (wp === "") {