Remove ToolMenuButton and dispose captured viewport images

Tools no longer have main menu launchers; the game menu quits through
ApplicationExit.

src/Menu/GameMenu.cs

@@ -140,7 +140,7 @@ namespace Cthangover.Mods.Interface.Menu
 
         private void OnExitClick()
         {
-            GetTree().Quit();
+            Cthangover.Core.Bootstrap.ApplicationExit.Quit(GetTree());
         }
     }
 }

src/Tool/ToolMenuButton.cs

@@ -1,33 +0,0 @@
-using Godot;
-using Cthangover.Core.UI.Tool;
-
-namespace Cthangover.Mods.Interface.Tool
-{
-    /// <summary>
-    /// Shared factory for the launcher buttons that tools contribute to the main
-    /// menu's tool block. Keeps the standard presentation (localized caption),
-    /// the translation-key metadata used for live language switching, and the
-    /// window-opening action in one place, so <see cref="IToolProvider.AddMenuButton"/>
-    /// implementations stay focused while remaining free to append extra controls.
-    /// </summary>
-    public static class ToolMenuButton
-    {
-        /// <summary>
-        /// Creates a button labelled with the tool's <see cref="IToolProvider.LocaleKey"/>,
-        /// wires it to open a fresh window via <see cref="ToolWindow.ShowWindow"/>, and adds
-        /// it to <paramref name="container"/>. Returns the created button so a tool can
-        /// decorate it further (icon, tooltip, extra handlers).
-        /// </summary>
-        public static Button Attach(Container container, IToolProvider tool)
-        {
-            var button = new Button
-            {
-                Text = TranslationServer.Translate(tool.LocaleKey),
-            };
-            button.SetMeta(Menu.MenuBuilder.LocaleMetaKey, tool.LocaleKey);
-            button.Pressed += () => ToolWindow.ShowWindow(tool.CreateWindow());
-            container.AddChild(button);
-            return button;
-        }
-    }
-}

src/View/ViewportCapture.cs

@@ -23,6 +23,7 @@ namespace Cthangover.Mods.Interface.View
             if (image == null || !viewport.UseHdr2D)
                 return image;
 
+            using var source = image;
             image.Convert(Image.Format.Rgbaf);
             var floats = MemoryMarshal.Cast<byte, float>(image.GetData());
             var bytes = new byte[floats.Length];
@@ -39,7 +40,7 @@ namespace Cthangover.Mods.Interface.View
         /// <summary>Saves the current frame of <paramref name="viewport"/> as a PNG; false without a frame.</summary>
         public static bool SavePng(Viewport viewport, string path)
         {
-            var image = Take(viewport);
+            using var image = Take(viewport);
             return image != null && image.SavePng(path) == Error.Ok;
         }
     }