Add Vortex Indicator implementation and documentation

- Implemented Vortex Indicator in Vortex.cs, including calculation logic and event handling.
- Added detailed documentation for Vortex Indicator in Vortex.md, covering historical context, algorithm, outputs, and trading interpretation.
- Updated oscillators index to include TTM Wave indicator.
- Added TTM Wave documentation with algorithm and trading interpretation.
- Updated reversals index to include TTM Scalper Alert indicator.
- Added TTM Scalper Alert documentation with algorithm and trading strategy.
- Updated NDepend badges to reflect increased code metrics (classes, methods, lines of code, public types, comments, and complexity).

lib/reversals/_index.md

@@ -15,3 +15,4 @@ Reversal indicators identify potential turning points where price may change dir
 | [PIVOTWOOD](pivotwood/Pivotwood.md) | Woodie's Pivot Points | Weighted close pivots (2× close weight) for intraday trading. |
 | [PSAR](psar/Psar.md) | Parabolic Stop And Reverse | Trailing stop that accelerates with trend; SAR dots mark entry/exit signals. |
 | [SWINGS](swings/Swings.md) | Swing High/Low Detection | Identifies significant price reversals and swing points using configurable lookback. |
+| [TTM_SCALPER](ttm_scalper/TtmScalper.md) | TTM Scalper Alert | 3-bar pivot high/low detection for scalping entries. John Carter. |

lib/reversals/ttm_scalper/TtmScalper.md

@@ -0,0 +1,65 @@
+# TTM_SCALPER: TTM Scalper Alert
+
+> **Pending Implementation** - Placeholder for John Carter's TTM Scalper Alert indicator
+
+## Historical Context
+
+John Carter designed TTM Scalper Alert for quick identification of potential reversal points using a simple three-bar pattern recognition. The indicator marks pivot highs and lows that can serve as entry triggers for scalping strategies, particularly when combined with other TTM suite indicators.
+
+## Algorithm
+
+### Pivot High Detection
+```
+pivotHigh = high[1] > high[2] AND high[1] > high[0]
+// Three consecutive bars where middle bar has highest high
+```
+
+### Pivot Low Detection
+```
+pivotLow = low[1] < low[2] AND low[1] < low[0]
+// Three consecutive bars where middle bar has lowest low
+```
+
+### Alternative: Close-Based Version
+```
+pivotHigh = close[1] > close[2] AND close[1] > close[0]
+pivotLow = close[1] < close[2] AND close[1] < close[0]
+```
+
+## Default Parameters
+
+| Parameter | Value | Description |
+|:----------|:------|:------------|
+| UseCloses | false | Use close prices instead of high/low |
+| ShowPaintBars | true | Color bars at pivot points |
+
+## Outputs
+
+| Output | Type | Description |
+|:-------|:-----|:------------|
+| PivotHigh | bool | True on confirmed pivot high (painted on bar-1) |
+| PivotLow | bool | True on confirmed pivot low (painted on bar-1) |
+| PivotHighPrice | double | Price level of pivot high |
+| PivotLowPrice | double | Price level of pivot low |
+
+## Visual Markers
+
+- **▼ (Down Triangle):** Pivot high - potential short entry
+- **▲ (Up Triangle):** Pivot low - potential long entry
+- Markers appear one bar after confirmation (on the middle bar of the 3-bar pattern)
+
+## Trading Strategy
+
+1. **Long Entry:** Pivot low signal + TTM Squeeze firing bullish + TTM Trend bullish
+2. **Short Entry:** Pivot high signal + TTM Squeeze firing bearish + TTM Trend bearish
+3. **Stop Placement:** Beyond the pivot point high/low
+
+## Category
+
+**Reversals** - Detects potential trend reversal points using simple 3-bar pivot pattern.
+
+## See Also
+
+- [SWINGS: Swing High/Low Detection](../swings/Swings.md)
+- [FRACTALS: Williams Fractals](../fractals/Fractals.md)
+- [TTM_SQUEEZE: TTM Squeeze](../../dynamics/ttm_squeeze/TtmSqueeze.md)