Enhance code quality and stability across various modules

- Updated .coderabbit.yaml to exclude additional file types from reviews, improving the focus on relevant code changes.
- Modified scanner.sh to handle test failures more gracefully, ensuring that analysis stops on test failures and improving logging.
- Improved sonarscanner.sh to ensure build and test failures are properly reported, enhancing CI reliability.
- Refined SimdExtensions.cs documentation for clarity on variance calculation methods.
- Cleaned up TSeries.Tests.cs by simplifying the test structure and ensuring proper namespace usage.
- Fixed potential issues in tseries.cs by ensuring correct handling of DateTime values.
- Enhanced CsvFeed.cs to improve error handling during CSV parsing, ensuring robustness against malformed data.
- Updated GBM.cs to correctly calculate volume in the current bar, ensuring accurate simulation.
- Adjusted index.html to use globalThis for better compatibility across environments.
- Refined quantalib.csproj to exclude unnecessary files from compilation, streamlining the build process.
- Added comprehensive tests for the Mama class to ensure correct behavior during updates and state management.
- Improved error handling in various trend classes (Kama, Dema, Ema, T3, Tema, Wma) to ensure NaN values are managed correctly.
- Removed redundant Mama.Repro.Tests.cs file and consolidated tests into Mama.Tests.cs for better organization.
- Enhanced T3 and Tema classes to maintain state integrity during updates, particularly with NaN values.

lib/trends/kama/Kama.cs

@@ -75,6 +75,7 @@ public sealed class Kama : ITValuePublisher
 
         Name = $"Kama({period}, {fastPeriod}, {slowPeriod})";
         _kama = double.NaN;
+        _lastValidValue = double.NaN;
     }
 
     public Kama(ITValuePublisher source, int period = 10, int fastPeriod = 2, int slowPeriod = 30)
@@ -98,6 +99,12 @@ public sealed class Kama : ITValuePublisher
     public TValue Update(TValue input, bool isNew = true)
     {
         double val = GetValidValue(input.Value);
+        if (double.IsNaN(val))
+        {
+            Last = new TValue(input.Time, double.NaN);
+            Pub?.Invoke(Last);
+            return Last;
+        }
 
         if (isNew)
         {
@@ -190,11 +197,11 @@ public sealed class Kama : ITValuePublisher
             v.Add(outputSpan[i]);
         }
 
-        // Restore state by replaying last few bars
-        // This is expensive but necessary to sync the object state
+        // Restore state by replaying the entire series
+        // This is expensive but necessary to sync the object state correctly
+        // because KAMA is recursive (IIR) and depends on the full history.
         Reset();
-        int startIndex = Math.Max(0, len - _period - 1);
-        for (int i = startIndex; i < len; i++)
+        for (int i = 0; i < len; i++)
         {
             Update(source[i]);
         }
@@ -220,7 +227,7 @@ public sealed class Kama : ITValuePublisher
         double volatilitySum = 0;
         double kama = 0;
         bool kamaInitialized = false;
-        double lastValid = 0;
+        double lastValid = double.NaN;
 
         for (int i = 0; i < source.Length; i++)
         {
@@ -230,6 +237,12 @@ public sealed class Kama : ITValuePublisher
             else
                 val = lastValid;
 
+            if (double.IsNaN(val))
+            {
+                output[i] = double.NaN;
+                continue;
+            }
+
             // Add to buffer
             double removed = buffer[bufferIdx];
             buffer[bufferIdx] = val;
@@ -298,7 +311,7 @@ public sealed class Kama : ITValuePublisher
         _volatilitySum = 0;
         _p_volatilitySum = 0;
         _lastDiffOut = 0;
-        _lastValidValue = 0;
+        _lastValidValue = double.NaN;
         Last = default;
     }
 }