Give the row-details text blob a minimum height

A one-line payload (short hex dump, tiny source-link document) rendered
as a squeezed strip barely taller than the row itself, which does not
read as an expandable details area. Floor the editor at 100px so the
details region stays visually recognisable regardless of payload size.

Assisted-by: Claude:claude-fable-5:Claude Code

ILSpy.Tests/Metadata/MetadataRowDetailsTests.cs

@@ -186,6 +186,7 @@ public class MetadataRowDetailsTests
 		editor.IsReadOnly.Should().BeTrue();
 		editor.WordWrap.Should().BeTrue();
 		editor.MaxHeight.Should().Be(400, "the host row must stay bounded; the editor scrolls internally");
+		editor.MinHeight.Should().Be(100, "a short payload must still get a recognisable details area, not a squeezed strip");
 		editor.SyntaxHighlighting.Should().NotBeNull();
 		editor.SyntaxHighlighting!.Name.Should().Be("C#");
 

ILSpy/Metadata/MetadataRowDetails.cs

@@ -121,8 +121,10 @@ namespace ICSharpCode.ILSpy.Metadata
 		/// in the decompiler-view-styled AvaloniaEdit editor: text payloads are mostly code,
 		/// so they get syntax colours (selected by <paramref name="highlightExtension"/>,
 		/// e.g. ".cs" or ".json"; <see langword="null"/> stays plain) and line virtualization
-		/// keeps large embedded-source documents cheap. Height is bounded so the host row
+		/// keeps large embedded-source documents cheap. Height is bounded in both directions:
-		/// cannot grow unbounded; the editor scrolls internally.
+		/// capped so the host row cannot grow unbounded (the editor scrolls internally), and
+		/// floored so a short payload still reads as a details area rather than a squeezed
+		/// one-line strip.
 		/// </summary>
 		public static Control BuildTextBlob(string text, string? highlightExtension = null)
 		{
@@ -131,6 +133,7 @@ namespace ICSharpCode.ILSpy.Metadata
 				Text = text,
 				IsReadOnly = true,
 				WordWrap = true,
+				MinHeight = 100,
 				MaxHeight = 400,
 			};
 			if (highlightExtension != null)