Fix build and code structure improvements. New but essential UI functionality. CI improvements. Documentation improvements. AI module improvements.

src/Scanner/__Tests/StellaOps.Scanner.Diff.Tests/ComponentDifferTests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Collections.Immutable;
 using System.Linq;
@@ -339,7 +339,6 @@ public sealed class ComponentDifferTests
 
         var json = DiffJsonSerializer.Serialize(document);
         using var parsed = JsonDocument.Parse(json);
-using StellaOps.TestKit;
         var changeJson = parsed.RootElement
             .GetProperty("layers")[0]
             .GetProperty("changes")[0];