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

src/Concelier/__Tests/StellaOps.Concelier.Models.Tests/ProvenanceDiagnosticsTests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics.Metrics;
 using System.Linq;
@@ -114,7 +114,6 @@ public sealed class ProvenanceDiagnosticsTests
         var measurements = new List<(string Instrument, long Value, IReadOnlyDictionary<string, object?> Tags)>();
         using var listener = CreateListener(measurements, "concelier.range.primitives");
 
-using StellaOps.TestKit;
         ProvenanceDiagnostics.RecordRangePrimitive("source-D", range);
 
         listener.Dispose();