Этап 2

Minint.Core/Models/MinintLayer.cs

@@ -0,0 +1,42 @@
+namespace Minint.Core.Models;
+
+/// <summary>
+/// A single raster layer. Pixels are indices into the parent document's palette.
+/// Array layout is row-major: Pixels[y * width + x].
+/// </summary>
+public sealed class MinintLayer
+{
+    public string Name { get; set; }
+    public bool IsVisible { get; set; }
+
+    /// <summary>
+    /// Per-layer opacity (0 = fully transparent, 255 = fully opaque).
+    /// Used during compositing: effective alpha = paletteColor.A * Opacity / 255.
+    /// </summary>
+    public byte Opacity { get; set; }
+
+    /// <summary>
+    /// Palette indices, length must equal container Width * Height.
+    /// Index 0 = transparent by convention.
+    /// </summary>
+    public int[] Pixels { get; }
+
+    public MinintLayer(string name, int pixelCount)
+    {
+        Name = name;
+        IsVisible = true;
+        Opacity = 255;
+        Pixels = new int[pixelCount];
+    }
+
+    /// <summary>
+    /// Constructor for deserialization — accepts a pre-filled pixel buffer.
+    /// </summary>
+    public MinintLayer(string name, bool isVisible, byte opacity, int[] pixels)
+    {
+        Name = name;
+        IsVisible = isVisible;
+        Opacity = opacity;
+        Pixels = pixels;
+    }
+}