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/trends_FIR/alma/Alma.cs

@@ -31,7 +31,7 @@ public sealed class Alma : AbstractBase
     [StructLayout(LayoutKind.Auto)]
     private record struct State(double LastValidValue, bool IsInitialized);
     private State _state;
-    private State _p_state;
+    private State _pState;
 
     public bool IsNew => _isNew;
     public override bool IsHot => _buffer.IsFull;
@@ -139,11 +139,11 @@ public sealed class Alma : AbstractBase
     {
         if (isNew)
         {
-            _p_state = _state;
+            _pState = _state;
         }
         else
         {
-            _state = _p_state;
+            _state = _pState;
         }
 
         if (double.IsFinite(input.Value))
@@ -213,7 +213,7 @@ public sealed class Alma : AbstractBase
         // Reset state
         _buffer.Clear();
         _state = default;
-        _p_state = default;
+        _pState = default;
 
         int warmupLength = Math.Min(source.Length, WarmupPeriod);
         int startIndex = source.Length - warmupLength;
@@ -254,7 +254,7 @@ public sealed class Alma : AbstractBase
             Update(new TValue(DateTime.MinValue, source[i]), isNew: true, publish: false);
         }
 
-        _p_state = _state;
+        _pState = _state;
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -449,7 +449,7 @@ public sealed class Alma : AbstractBase
     {
         _buffer.Clear();
         _state = new State(double.NaN, IsInitialized: false);
-        _p_state = _state;
+        _pState = _state;
         Last = default;
     }
-}
+}

lib/trends_FIR/nlma/Nlma.cs

@@ -90,8 +90,6 @@ public sealed class Nlma : AbstractBase
         _isNew = isNew;
         return UpdateCore(input, isNew, publish: true);
     }
-
-    /// <inheritdoc/>
     public override TSeries Update(TSeries source)
     {
         if (source.Count == 0)
@@ -326,8 +324,6 @@ public sealed class Nlma : AbstractBase
     }
 
     // ── Prime / Batch / Calculate ──────────────────────────────────────
-
-    /// <inheritdoc/>
     public override void Prime(ReadOnlySpan<double> source, TimeSpan? step = null)
     {
         foreach (var value in source)
@@ -489,8 +485,6 @@ public sealed class Nlma : AbstractBase
     }
 
     // ── Reset / Dispose ────────────────────────────────────────────────
-
-    /// <inheritdoc/>
     public override void Reset()
     {
         _buffer.Clear();
@@ -498,8 +492,6 @@ public sealed class Nlma : AbstractBase
         _p_lastValidValue = double.NaN;
         Last = default;
     }
-
-    /// <inheritdoc/>
     protected override void Dispose(bool disposing)
     {
         if (!_disposed)

lib/trends_FIR/wma/Wma.Coverage.Tests.cs

@@ -1,9 +1,10 @@
 using System.Reflection;
 using System.Runtime.Intrinsics.X86;
+using Xunit.Abstractions;
 
 namespace QuanTAlib.Tests;
 
-public class WmaCoverageTests
+public class WmaCoverageTests(ITestOutputHelper output)
 {
     [Fact]
     public void Cover_Scalar_Fallback_SmallData()
@@ -41,7 +42,7 @@ public class WmaCoverageTests
             source[i] = i;
         }
 
-        double[] output = new double[len];
+        double[] result = new double[len];
 
         // Use reflection to invoke private static CalculateSimdCore
         var method = typeof(Wma).GetMethod("CalculateSimdCore", BindingFlags.NonPublic | BindingFlags.Static);
@@ -73,12 +74,12 @@ public class WmaCoverageTests
             // Maybe I can use `MethodInfo.CreateDelegate`?
             // Delegates can take Spans if defined correctly.
 
-            InvokePrivateStaticMethod_WithSpans("CalculateSimdCore", source, output, period);
+            InvokePrivateStaticMethod_WithSpans("CalculateSimdCore", source, result, period);
         }
         catch (Exception ex)
         {
             // If reflection fails, we can't cover it.
-            Console.WriteLine($"Could not invoke AVX2 core: {ex.Message}");
+            output.WriteLine($"Could not invoke AVX2 core: {ex.Message}");
         }
     }