Ensure MainMenu buttons uniform width

Add EnsureButtonsWidth to MainMenu: collects SelectionButton_MainMenu children (cached), computes the maximum preferred width and applies it to all buttons (with null checks). Invoke EnsureButtonsWidth during MainMenu initialization and from UIManager after language initialization so menu buttons are sized consistently at startup.

Assets/Scripts/MDPro3/Managers/UIManager.cs

@@ -182,6 +182,7 @@ namespace MDPro3
             Program.instance.UnloadUnusedAssets();
 
             InitializeLanguage();
+            Program.instance.menu.EnsureButtonsWidth();
             Program.instance.cutin.LoadCutins();
             Program.instance.mate.LoadMates();
             Program.instance.solo.LoadBots();

Assets/Scripts/MDPro3/Servant/MainMenu.cs

@@ -53,6 +53,7 @@ namespace MDPro3.Servant
             servantUI.ResetUI();
             StartCoroutine(LoadMyCardNewsAsync());
 
+            EnsureButtonsWidth();
             Program.instance.ReadParams();
         }
 
@@ -147,5 +148,29 @@ namespace MDPro3.Servant
             GetUI<MainMenuUI>().News.LoadNews();
         }
 
+        private SelectionButton_MainMenu[] buttons;
+        private SelectionButton_MainMenu[] Buttons
+            => buttons ??= GetButtons();
+
+        private SelectionButton_MainMenu[] GetButtons()
+        {
+            if (servantUI == null)
+                return null;
+            return transform.GetComponentsInChildren<SelectionButton_MainMenu>(true);
+        }
+
+        public void EnsureButtonsWidth()
+        {
+            if (Buttons == null)
+                return;
+
+            var widths = new float[Buttons.Length];
+            for (int i = 0; i < Buttons.Length; i++)
+                widths[i] = buttons[i].GetPreferredWidth();
+            var maxWidth = Mathf.Max(widths);
+            foreach(var button in Buttons)
+                button.SetWidth(maxWidth);
+        }
+
     }
 }