part #2

src/__Libraries/StellaOps.Evidence.Bundle/BinarySectionDiff.cs

@@ -0,0 +1,37 @@
+namespace StellaOps.Evidence.Bundle;
+
+/// <summary>
+/// Section-level diff entry.
+/// </summary>
+public sealed class BinarySectionDiff
+{
+    /// <summary>
+    /// Diff operation type.
+    /// </summary>
+    public required BinaryDiffOperation Operation { get; init; }
+
+    /// <summary>
+    /// Section name.
+    /// </summary>
+    public required string SectionName { get; init; }
+
+    /// <summary>
+    /// Previous section size.
+    /// </summary>
+    public long? PreviousSize { get; init; }
+
+    /// <summary>
+    /// Current section size.
+    /// </summary>
+    public long? CurrentSize { get; init; }
+
+    /// <summary>
+    /// Size delta.
+    /// </summary>
+    public long? SizeDelta { get; init; }
+
+    /// <summary>
+    /// Section permissions/flags.
+    /// </summary>
+    public string? Permissions { get; init; }
+}