Try to fix memory leaks

Layouting/BorderElement.cs

@@ -49,7 +49,7 @@ private void DrawLine(DrawContext drawContext, SKPoint startPoint,
     {
         if (width == 0) return;
 
-        var paint = new SKPaint
+        using var paint = new SKPaint
         {
             Color = SKColors.Black,
             StrokeWidth = width,

Layouting/Element.cs

@@ -13,7 +13,7 @@ SKPoint StartPoint
 /// <summary>
 /// Abstract base Element. Elements are designed to be used only one time!
 /// </summary>
-public abstract class Element
+public abstract class Element : IDisposable
 {
     /// <summary>
     /// Caching calculated size
@@ -45,4 +45,7 @@ public SKSize GetSize(DrawContext drawContext)
     /// </summary>
     /// <param name="drawContext">Context</param>
     public abstract void Draw(DrawContext drawContext);
+
+    public virtual void Dispose()
+    { }
 }

Layouting/ElementCollection.cs

@@ -49,4 +49,13 @@ protected record struct ChildrenSizes
             };
         }
     }
+
+    public override void Dispose()
+    {
+        base.Dispose();
+        foreach (var child in Children)
+        {
+            child.Dispose();
+        }
+    }
 }

Layouting/TextElement.cs

@@ -22,4 +22,10 @@ protected override SKSize CalculateSize(DrawContext drawContext)
         var width = paint.MeasureText(content);
         return new SKSize(width, paint.TextSize);
     }
+
+    public override void Dispose()
+    {
+        base.Dispose();
+        paint.Dispose();
+    }
 }

Program.cs

@@ -28,8 +28,8 @@
 
 app.MapGet("/preview/{providerId}", async (string providerId, ScreenRepository repo) =>
 {
-    var image = await repo.GetImageAsync(providerId);
-    var data = image.Encode(SkiaSharp.SKEncodedImageFormat.Png, 100);
+    using var image = await repo.GetImageAsync(providerId);
+    using var data = image.Encode(SkiaSharp.SKEncodedImageFormat.Png, 100);
     return Results.File(data.ToArray(), "image/png");
 
 })

Template/ScribanScreenProvider.cs

@@ -16,7 +16,7 @@ public async Task<SKBitmap> GetImageAsync()
     {
         var fileContent = await File.ReadAllTextAsync(path);
         using var xml = await renderer.RenderToStreamAsync(fileContent);
-        var element = layoutDeserializer.DeserializeXml(xml);
+        using var element = layoutDeserializer.DeserializeXml(xml);
 
         return DrawManager.Draw(
             Constants.EPaperDisplaySize,