test: setup common stability and robustness properties tracking

lib/volatility/cvi/Cvi.Quantower.Tests.cs

@@ -281,4 +281,4 @@ public class CviIndicatorTests
         // With constant but different ranges, the absolute values may differ
         // but both should be close to 0 (no rate of change)
     }
-}
+}

lib/volatility/cvi/Cvi.Tests.cs

@@ -497,4 +497,4 @@ public class CviTests
         Assert.Throws<ArgumentException>(() => Cvi.Batch(source, outputCorrect, 0, 2));
         Assert.Throws<ArgumentException>(() => Cvi.Batch(source, outputCorrect, 2, 0));
     }
-}
+}

lib/volatility/cvi/Cvi.Validation.Tests.cs

@@ -621,4 +621,4 @@ public class CviValidationTests
         double mean = values.Average();
         return values.Average(v => Math.Pow(v - mean, 2));
     }
-}
+}