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

src/Scanner/__Tests/StellaOps.Scanner.Reachability.Tests/ReachabilityUnionWriterTests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -180,7 +180,6 @@ public class ReachabilityUnionWriterTests
         var writer = new ReachabilityUnionWriter();
         using var temp = new TempDir();
 
-using StellaOps.TestKit;
         var graph = new ReachabilityUnionGraph(
             Nodes: new[]
             {