Add "Ehlers" prefix to 5 Ehlers indicators: SAM, PMA, ILRS, CTI, RVGI

Standardize naming convention so all Ehlers-originated indicators
have "Ehlers" in their display name across all documentation and
code surfaces:

- SAM: Smoothed Adaptive Momentum → Ehlers Smoothed Adaptive Momentum
- PMA: Predictive Moving Average → Ehlers Predictive Moving Average
- ILRS: Integral of LinReg Slope → Ehlers Integral of LinReg Slope
- CTI: Correlation Trend Indicator → Ehlers Correlation Trend Indicator
- RVGI: Relative Vigor Index → Ehlers Relative Vigor Index

Updated across: .md H1 titles, XML doc summaries, Quantower Name
properties, Quantower test assertions, _sidebar.md, lib/_index.md,
category _index.md files, docs/indicators.md, docs/validation.md.

Build: 0 warnings, 0 errors. All tests pass.

lib/oscillators/cti/Cti.Quantower.cs

@@ -29,7 +29,7 @@ public sealed class CtiIndicator : Indicator, IWatchlistIndicator
     {
         OnBackGround = true;
         SeparateWindow = true;
-        Name = "CTI - Correlation Trend Indicator";
+        Name = "CTI - Ehlers Correlation Trend Indicator";
         Description = "Pearson correlation between price and a perfect linear time index";
 
         _series = new LineSeries("CTI", Color.Yellow, 2, LineStyle.Solid);

lib/oscillators/cti/Cti.cs

@@ -4,7 +4,7 @@ using System.Runtime.InteropServices;
 namespace QuanTAlib;
 
 /// <summary>
-/// CTI: Correlation Trend Indicator (Ehlers, TASC 2020)
+/// CTI: Ehlers Correlation Trend Indicator
 /// </summary>
 /// <remarks>
 /// Measures the Pearson correlation coefficient between the price series and a

lib/oscillators/cti/Cti.md

@@ -1,4 +1,4 @@
-# CTI: Correlation Trend Indicator
+# CTI: Ehlers Correlation Trend Indicator
 
 > *Correlation trend indicator measures the linear correlation between price and a perfect trend line — how orderly is the move.*
 

lib/oscillators/cti/tests/Cti.Quantower.Tests.cs

@@ -13,7 +13,7 @@ public sealed class CtiIndicatorTests
         Assert.Equal(20, indicator.Period);
         Assert.Equal(SourceType.Close, indicator.Source);
         Assert.True(indicator.ShowColdValues);
-        Assert.Equal("CTI - Correlation Trend Indicator", indicator.Name);
+        Assert.Equal("CTI - Ehlers Correlation Trend Indicator", indicator.Name);
         Assert.True(indicator.SeparateWindow);
         Assert.True(indicator.OnBackGround);
     }