test: setup common stability and robustness properties tracking

lib/volatility/vr/Vr.Quantower.Tests.cs

@@ -381,4 +381,4 @@ public class VrIndicatorTests
         // In steady state with consistent volatility, VR should hover around 1
         Assert.True(avgVr >= 0.5 && avgVr <= 2.0, $"Average VR should be around 1, got {avgVr}");
     }
-}
+}

lib/volatility/vr/Vr.Tests.cs

@@ -625,4 +625,4 @@ public class VrTests
     }
 
     #endregion
-}
+}

lib/volatility/vr/Vr.Validation.Tests.cs

@@ -421,4 +421,4 @@ public class VrValidationTests
     }
 
     #endregion
-}
+}