chore: repo cleanup and code quality improvements

- Remove global.json (SDK pinning unnecessary)

- Remove nuget.config, move MyGet source to .csproj RestoreAdditionalProjectSources

- Gitignore ndepend/ entirely, move badges to docs/img/

- Update README.md and docs/ndepend.md badge paths

- Add NDepend project property to QuanTAlib.slnx

- Expand .editorconfig ReSharper/diagnostic suppressions

- Use ArgumentOutOfRangeException instead of ArgumentException

- Use discard _ for unused event sender parameters

- Remove quantalib.code-workspace and sonar-suppressions.json

- Add filter signature SVGs

lib/cycles/ccyc/Ccyc.Tests.cs

@@ -287,13 +287,6 @@ public class CcycTests
 
         Assert.Equal(source.Count, batchResults.Count);
 
-        // Compare last 50 values
-        for (int i = source.Count - 50; i < source.Count; i++)
-        {
-            // Streaming processes all bars and streaming result is the last one
-            // But for exact comparison, batch results should match streaming approach
-        }
-
         // The batch method creates a fresh indicator and calls Update(TSeries),
         // which processes sequentially — should match streaming exactly
         var ccyc2 = new Ccyc();