docs: remove C# Implementation Considerations sections, clean up temp scripts, reorganize test files

- Remove 'C# Implementation Considerations' sections from 34 indicator .md files
- Delete 29 temp PowerShell scripts (_fix_mojibake.ps1, _hex_scan.ps1, etc.)
- Move test files into tests/ subdirectories for consistent project structure
- Add trader-focused bullet points to indicator documentation

lib/dynamics/dmx/tests/Dmx.Quantower.Tests.cs

@@ -0,0 +1,139 @@
+using TradingPlatform.BusinessLayer;
+using QuanTAlib;
+
+namespace QuanTAlib.Tests;
+
+public class DmxIndicatorTests
+{
+    [Fact]
+    public void DmxIndicator_Constructor_SetsDefaults()
+    {
+        var indicator = new DmxIndicator();
+
+        Assert.Equal(14, indicator.Period);
+        Assert.True(indicator.ShowColdValues);
+        Assert.Equal("DMX - Jurik Directional Movement Index", indicator.Name);
+        Assert.True(indicator.SeparateWindow);
+        Assert.True(indicator.OnBackGround);
+    }
+
+    [Fact]
+    public void DmxIndicator_MinHistoryDepths_EqualsPeriod()
+    {
+        var indicator = new DmxIndicator { Period = 20 };
+
+        Assert.Equal(0, DmxIndicator.MinHistoryDepths);
+        IWatchlistIndicator watchlistIndicator = indicator;
+        Assert.Equal(0, watchlistIndicator.MinHistoryDepths);
+    }
+
+    [Fact]
+    public void DmxIndicator_ShortName_IncludesPeriod()
+    {
+        var indicator = new DmxIndicator { Period = 20 };
+        // Initialize to update SourceName (though DMX doesn't use SourceName)
+        indicator.Initialize();
+
+        Assert.Contains("DMX", indicator.ShortName, StringComparison.Ordinal);
+        Assert.Contains("20", indicator.ShortName, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void DmxIndicator_SourceCodeLink_IsValid()
+    {
+        var indicator = new DmxIndicator();
+
+        Assert.Contains("github.com", indicator.SourceCodeLink, StringComparison.Ordinal);
+        Assert.Contains("Dmx.Quantower.cs", indicator.SourceCodeLink, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public void DmxIndicator_Initialize_CreatesInternalDmx()
+    {
+        var indicator = new DmxIndicator { Period = 14 };
+
+        // Initialize should not throw
+        indicator.Initialize();
+
+        // After init, line series should exist
+        Assert.Single(indicator.LinesSeries);
+    }
+
+    [Fact]
+    public void DmxIndicator_ProcessUpdate_HistoricalBar_ComputesValue()
+    {
+        var indicator = new DmxIndicator { Period = 5 };
+        indicator.Initialize();
+
+        // Add historical data
+        var now = DateTime.UtcNow;
+        // Need enough bars for Period
+        for (int i = 0; i < 10; i++)
+        {
+            indicator.HistoricalData.AddBar(now.AddMinutes(i), 100 + i, 110 + i, 90 + i, 105 + i);
+        }
+
+        // Process update
+        var args = new UpdateArgs(UpdateReason.HistoricalBar);
+        indicator.ProcessUpdate(args);
+
+        // Line series should have a value
+        Assert.Equal(1, indicator.LinesSeries[0].Count);
+        Assert.True(double.IsFinite(indicator.LinesSeries[0].GetValue(0)));
+    }
+
+    [Fact]
+    public void DmxIndicator_ProcessUpdate_NewBar_ComputesValue()
+    {
+        var indicator = new DmxIndicator { Period = 5 };
+        indicator.Initialize();
+
+        var now = DateTime.UtcNow;
+        for (int i = 0; i < 10; i++)
+        {
+            indicator.HistoricalData.AddBar(now.AddMinutes(i), 100 + i, 110 + i, 90 + i, 105 + i);
+        }
+
+        indicator.ProcessUpdate(new UpdateArgs(UpdateReason.HistoricalBar));
+
+        // Add new bar
+        indicator.HistoricalData.AddBar(now.AddMinutes(10), 110, 120, 100, 115);
+        indicator.ProcessUpdate(new UpdateArgs(UpdateReason.NewBar));
+
+        Assert.Equal(2, indicator.LinesSeries[0].Count);
+    }
+
+    [Fact]
+    public void DmxIndicator_ProcessUpdate_NewTick_ProcessesWithoutError()
+    {
+        var indicator = new DmxIndicator { Period = 5 };
+        indicator.Initialize();
+
+        var now = DateTime.UtcNow;
+        for (int i = 0; i < 10; i++)
+        {
+            indicator.HistoricalData.AddBar(now.AddMinutes(i), 100 + i, 110 + i, 90 + i, 105 + i);
+        }
+
+        indicator.ProcessUpdate(new UpdateArgs(UpdateReason.HistoricalBar));
+        double firstValue = indicator.LinesSeries[0].GetValue(0);
+
+        indicator.ProcessUpdate(new UpdateArgs(UpdateReason.NewTick));
+        double secondValue = indicator.LinesSeries[0].GetValue(0);
+
+        Assert.True(double.IsFinite(firstValue));
+        Assert.True(double.IsFinite(secondValue));
+    }
+
+    [Fact]
+    public void DmxIndicator_Parameters_CanBeChanged()
+    {
+        var indicator = new DmxIndicator { Period = 14 };
+        Assert.Equal(14, indicator.Period);
+
+        indicator.Period = 20;
+
+        Assert.Equal(20, indicator.Period);
+        Assert.Equal(0, DmxIndicator.MinHistoryDepths);
+    }
+}

lib/dynamics/dmx/tests/Dmx.Tests.cs

@@ -0,0 +1,241 @@
+
+namespace QuanTAlib;
+
+public class DmxTests
+{
+    [Fact]
+    public void Constructor_InvalidParameters_ThrowsException()
+    {
+        // Dmx delegates to Jma which throws ArgumentOutOfRangeException (subclass of ArgumentException)
+        var ex1 = Assert.ThrowsAny<ArgumentException>(() => new Dmx(0));
+        Assert.Contains("period", ex1.Message, StringComparison.OrdinalIgnoreCase);
+
+        var ex2 = Assert.ThrowsAny<ArgumentException>(() => new Dmx(-1));
+        Assert.Contains("period", ex2.Message, StringComparison.OrdinalIgnoreCase);
+    }
+
+    [Fact]
+    public void BasicCalculation_DoesNotCrash()
+    {
+        var dmx = new Dmx(14);
+        var gbm = new GBM();
+        var bars = gbm.Fetch(1000, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        for (int i = 0; i < bars.Count; i++)
+        {
+            dmx.Update(bars[i]);
+        }
+
+        Assert.True(double.IsFinite(dmx.Last.Value));
+    }
+
+    [Fact]
+    public void IsNew_Consistency()
+    {
+        var dmx = new Dmx(14);
+        var gbm = new GBM();
+        var bars = gbm.Fetch(100, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        // Feed first 99
+        for (int i = 0; i < 99; i++)
+        {
+            dmx.Update(bars[i]);
+        }
+
+        // Update with 100th point (isNew=true)
+        dmx.Update(bars[99], true);
+
+        // Update with modified 100th point (isNew=false)
+        var modifiedBar = new TBar(bars[99].Time, bars[99].Open, bars[99].High + 1.0, bars[99].Low - 1.0, bars[99].Close, bars[99].Volume);
+        var val2 = dmx.Update(modifiedBar, false);
+
+        // Create new instance and feed up to modified
+        var dmx2 = new Dmx(14);
+        for (int i = 0; i < 99; i++)
+        {
+            dmx2.Update(bars[i]);
+        }
+        var val3 = dmx2.Update(modifiedBar, true);
+
+        Assert.Equal(val3.Value, val2.Value, 1e-9);
+    }
+
+    [Fact]
+    public void IterativeCorrections_RestoreToOriginalState()
+    {
+        var dmx = new Dmx(14);
+        var gbm = new GBM();
+        var bars = gbm.Fetch(100, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        for (int i = 0; i < 50; i++)
+        {
+            dmx.Update(bars[i]);
+        }
+
+        var originalValue = dmx.Last;
+
+        for (int m = 0; m < 5; m++)
+        {
+            var modified = new TBar(bars[49].Time, bars[49].Open, bars[49].High + m, bars[49].Low - m, bars[49].Close, bars[49].Volume);
+            dmx.Update(modified, isNew: false);
+        }
+
+        var restored = dmx.Update(bars[49], isNew: false);
+        Assert.Equal(originalValue.Value, restored.Value, 9);
+    }
+
+    [Fact]
+    public void Reset_Works()
+    {
+        var dmx = new Dmx(14);
+        var gbm = new GBM();
+        var bars = gbm.Fetch(100, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        for (int i = 0; i < bars.Count; i++)
+        {
+            dmx.Update(bars[i]);
+        }
+
+        dmx.Reset();
+        Assert.Equal(0, dmx.Last.Value);
+
+        // Feed again
+        for (int i = 0; i < bars.Count; i++)
+        {
+            dmx.Update(bars[i]);
+        }
+
+        Assert.True(double.IsFinite(dmx.Last.Value));
+    }
+
+    [Fact]
+    public void NaN_Input_UsesLastValidValue()
+    {
+        var dmx = new Dmx(14);
+        var gbm = new GBM();
+        var bars = gbm.Fetch(50, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        for (int i = 0; i < 30; i++)
+        {
+            dmx.Update(bars[i]);
+        }
+
+        var nanBar = new TBar(DateTime.UtcNow, double.NaN, double.NaN, double.NaN, double.NaN, 100);
+        var result = dmx.Update(nanBar);
+
+        Assert.True(double.IsFinite(result.Value));
+    }
+
+    [Fact]
+    public void Infinity_Input_UsesLastValidValue()
+    {
+        var dmx = new Dmx(14);
+        var gbm = new GBM();
+        var bars = gbm.Fetch(50, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        for (int i = 0; i < 30; i++)
+        {
+            dmx.Update(bars[i]);
+        }
+
+        var infBar = new TBar(DateTime.UtcNow, double.PositiveInfinity, double.PositiveInfinity, 0, 100, 100);
+        var result = dmx.Update(infBar);
+
+        Assert.True(double.IsFinite(result.Value));
+    }
+
+    [Fact]
+    public void AllModes_ProduceSameResult()
+    {
+        var gbm = new GBM(seed: 123);
+        var bars = gbm.Fetch(200, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        // 1. Batch Mode
+        var batchResult = Dmx.Batch(bars, 14);
+        double expected = batchResult.Last.Value;
+
+        // 2. Streaming Mode
+        var streamDmx = new Dmx(14);
+        for (int i = 0; i < bars.Count; i++)
+        {
+            streamDmx.Update(bars[i]);
+        }
+
+        double streamResult = streamDmx.Last.Value;
+
+        Assert.Equal(expected, streamResult, 9);
+    }
+
+    [Fact]
+    public void TBarSeries_Update_Matches_Streaming()
+    {
+        var dmx = new Dmx(14);
+        var gbm = new GBM();
+        var bars = gbm.Fetch(200, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        var streamingResults = new List<double>();
+        for (int i = 0; i < bars.Count; i++)
+        {
+            streamingResults.Add(dmx.Update(bars[i]).Value);
+        }
+
+        var dmx2 = new Dmx(14);
+        var seriesResults = dmx2.Update(bars);
+
+        Assert.Equal(streamingResults.Count, seriesResults.Count);
+        for (int i = 0; i < seriesResults.Count; i++)
+        {
+            Assert.Equal(streamingResults[i], seriesResults.Values[i], 1e-9);
+        }
+    }
+
+    [Fact]
+    public void FirstBar_Handling()
+    {
+        var dmx = new Dmx(14);
+        var bar = new TBar(DateTime.UtcNow, 100, 110, 90, 105, 1000);
+
+        // First bar should produce 0 DMX because DM+ and DM- are 0
+        var result = dmx.Update(bar);
+
+        Assert.Equal(0, result.Value);
+    }
+
+    [Fact]
+    public void StaticBatch_Matches_Streaming()
+    {
+        var gbm = new GBM();
+        var bars = gbm.Fetch(200, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        var dmx = new Dmx(14);
+        var streamingResults = new List<double>();
+        for (int i = 0; i < bars.Count; i++)
+        {
+            streamingResults.Add(dmx.Update(bars[i]).Value);
+        }
+
+        var staticResults = Dmx.Batch(bars, 14);
+
+        Assert.Equal(streamingResults.Count, staticResults.Count);
+        for (int i = 0; i < streamingResults.Count; i++)
+        {
+            Assert.Equal(streamingResults[i], staticResults.Values[i], 1e-9);
+        }
+    }
+
+    [Fact]
+    public void Chainability_Works()
+    {
+        var dmx = new Dmx(14);
+        var sma = new Sma(dmx, 10);
+        var gbm = new GBM();
+        var bars = gbm.Fetch(100, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        for (int i = 0; i < bars.Count; i++)
+        {
+            dmx.Update(bars[i]);
+        }
+
+        Assert.True(Math.Abs(sma.Last.Value) > 1e-14);
+    }
+}

lib/dynamics/dmx/tests/Dmx.Validation.Tests.cs

@@ -0,0 +1,98 @@
+using Xunit.Abstractions;
+
+namespace QuanTAlib.Tests;
+
+public class DmxValidationTests
+{
+    private readonly ITestOutputHelper _output;
+
+    public DmxValidationTests(ITestOutputHelper output)
+    {
+        _output = output;
+    }
+
+    [Fact]
+    public void Validate_Consistency_UpdateVsSeries()
+    {
+        var gbm = new GBM();
+        var bars = gbm.Fetch(1000, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        var dmx = new Dmx(14);
+        var streamResult = new TSeries();
+        for (int i = 0; i < bars.Count; i++)
+        {
+            streamResult.Add(dmx.Update(bars[i]));
+        }
+
+        var dmx2 = new Dmx(14);
+        var seriesResult = dmx2.Update(bars);
+
+        Assert.Equal(streamResult.Count, seriesResult.Count);
+        for (int i = 0; i < bars.Count; i++)
+        {
+            Assert.Equal(streamResult[i].Value, seriesResult[i].Value, ValidationHelper.DefaultTolerance);
+        }
+        _output.WriteLine("DMX Update vs Series validated successfully");
+    }
+
+    [Fact]
+    public void Validate_Range()
+    {
+        var gbm = new GBM();
+        var bars = gbm.Fetch(1000, DateTime.UtcNow.Ticks, TimeSpan.FromMinutes(1));
+
+        var dmx = new Dmx(14);
+        for (int i = 0; i < bars.Count; i++)
+        {
+            var val = dmx.Update(bars[i]).Value;
+            Assert.True(val >= -100.0 && val <= 100.0, $"DMX value {val} out of range [-100, 100]");
+        }
+        _output.WriteLine("DMX range validated successfully");
+    }
+
+    [Fact]
+    public void Validate_Trend_Direction()
+    {
+        // Create a synthetic uptrend
+        var bars = new TBarSeries();
+        var time = DateTime.UtcNow;
+        double price = 100;
+        for (int i = 0; i < 100; i++)
+        {
+            bars.Add(time, price, price + 2, price - 1, price + 1, 1000);
+            time = time.AddMinutes(1);
+            price += 1.0; // Steady uptrend
+        }
+
+        var dmx = new Dmx(14);
+        var result = dmx.Update(bars);
+
+        // Check the last few values, they should be positive
+        for (int i = 80; i < 100; i++)
+        {
+            Assert.True(result[i].Value > 0, $"DMX should be positive in uptrend at index {i}, got {result[i].Value}");
+        }
+
+        // Create a synthetic downtrend
+        bars = new TBarSeries();
+        time = DateTime.UtcNow;
+        price = 200;
+        for (int i = 0; i < 100; i++)
+        {
+            bars.Add(time, price, price + 1, price - 2, price - 1, 1000);
+            time = time.AddMinutes(1);
+            price -= 1.0; // Steady downtrend
+        }
+
+        dmx = new Dmx(14);
+        result = dmx.Update(bars);
+
+        // Check the last few values, they should be negative
+        for (int i = 80; i < 100; i++)
+        {
+            Assert.True(result[i].Value < 0, $"DMX should be negative in downtrend at index {i}, got {result[i].Value}");
+        }
+
+        _output.WriteLine("DMX trend direction validated successfully");
+    }
+}