notification clickthrougable, update notes centered in the middle of the screen unmovable

LightlessSync/UI/LightlessNotificationUI.cs

@@ -45,6 +45,9 @@ public class LightlessNotificationUi : WindowMediatorSubscriberBase
                 ImGuiWindowFlags.NoNav |
                 ImGuiWindowFlags.NoBackground |
                 ImGuiWindowFlags.NoCollapse |
+                ImGuiWindowFlags.NoInputs |
+                ImGuiWindowFlags.NoTitleBar |
+                ImGuiWindowFlags.NoScrollbar |
                 ImGuiWindowFlags.AlwaysAutoResize;  
                 
         PositionCondition = ImGuiCond.Always;

LightlessSync/UI/UpdateNotesUi.cs

@@ -76,13 +76,15 @@ public class UpdateNotesUi : WindowMediatorSubscriberBase
         ShowCloseButton = true;
 
         Flags = ImGuiWindowFlags.NoSavedSettings | ImGuiWindowFlags.NoResize | ImGuiWindowFlags.NoCollapse |
-                ImGuiWindowFlags.NoTitleBar;
+                ImGuiWindowFlags.NoTitleBar | ImGuiWindowFlags.NoMove;
 
         SizeConstraints = new WindowSizeConstraints()
         {
             MinimumSize = new Vector2(800, 700), MaximumSize = new Vector2(800, 700),
         };
 
+        PositionCondition = ImGuiCond.Always;
+
         LoadEmbeddedResources();
         logger.LogInformation("UpdateNotesUi constructor completed successfully");
     }
@@ -93,11 +95,20 @@ public class UpdateNotesUi : WindowMediatorSubscriberBase
         _hasInitializedCollapsingHeaders = false;
     }
 
+    private void CenterWindow()
+    {
+        var viewport = ImGui.GetMainViewport();
+        var center = viewport.GetCenter();
+        var windowSize = new Vector2(800f * ImGuiHelpers.GlobalScale, 700f * ImGuiHelpers.GlobalScale);
+        Position = center - windowSize / 2f;
+    }
+
     protected override void DrawInternal()
     {
         if (_uiShared.IsInGpose)
             return;
 
+        CenterWindow();
         DrawHeader();
         ImGuiHelpers.ScaledDummy(6);
         DrawTabs();