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/oscillators/_index.md

@@ -22,5 +22,6 @@ Oscillators fluctuate above and below a centerline or within bounded ranges. Use
 | [STOCHF](stochf/Stochf.md) | Stochastic Fast | Unsmoothed Stochastic. Faster but noisier. |
 | [STOCHRSI](stochrsi/Stochrsi.md) | Stochastic RSI | Stochastic applied to RSI. More sensitive than either alone. |
 | [TRIX](trix/Trix.md) | Triple Exponential Average | ROC of triple EMA. Filters noise through three smoothings. |
+| [TTM_WAVE](ttm_wave/TtmWave.md) | TTM Wave | Fibonacci-period MACD composite (Waves A/B/C). John Carter. |
 | [ULTOSC](ultosc/Ultosc.md) | Ultimate Oscillator | Multi-timeframe oscillator. Combines 7, 14, 28 period buying pressure. |
 | [WILLR](willr/Willr.md) | Williams %R | Inverse Stochastic. -100 to 0 range. Overbought/oversold. |

lib/oscillators/ttm_wave/TtmWave.md

@@ -0,0 +1,70 @@
+# TTM_WAVE: TTM Wave
+
+> **Pending Implementation** - Placeholder for John Carter's TTM Wave indicator
+
+## Historical Context
+
+John Carter developed TTM Wave as a multi-period MACD composite indicator using Fibonacci-based periods. The indicator displays three "waves" (A, B, C) that help traders identify the alignment of multiple timeframes and the strength of momentum across different cycle lengths.
+
+## Algorithm
+
+### Wave A (Short-term momentum)
+```
+Wave_A1 = EMA(close, 8) - EMA(close, 34)
+Wave_A2 = EMA(Wave_A1, 34)
+```
+
+### Wave B (Medium-term momentum)
+```
+Wave_B1 = EMA(close, 8) - EMA(close, 55)
+Wave_B2 = EMA(Wave_B1, 55)
+```
+
+### Wave C (Long-term momentum using Fibonacci periods)
+```
+e1 = EMA(close, 34)
+e2 = EMA(close, 55)
+e3 = EMA(close, 89)
+e4 = EMA(close, 144)
+e5 = EMA(close, 233)
+e6 = EMA(close, 377)
+
+Wave_C = e1 + e2 + e3 + e4 + e5 + e6 - 6 * EMA(close, some_avg_period)
+```
+
+## Fibonacci Periods
+
+| Period | Fibonacci |
+|:-------|:----------|
+| 8 | F(6) |
+| 34 | F(9) |
+| 55 | F(10) |
+| 89 | F(11) |
+| 144 | F(12) |
+| 233 | F(13) |
+| 377 | F(14) |
+
+## Outputs
+
+| Output | Type | Description |
+|:-------|:-----|:------------|
+| WaveA | double | Fast momentum oscillator (red/magenta histogram) |
+| WaveB | double | Medium momentum oscillator (dark red/magenta histogram) |
+| WaveC | double | Slow momentum composite (blue histogram) |
+
+## Trading Interpretation
+
+1. **All waves aligned:** Strong trend - ride the move
+2. **Wave A diverges from C:** Early warning of potential reversal
+3. **Waves crossing zero:** Momentum shift in progress
+4. **Wave C color change:** Major cycle direction changing
+
+## Category
+
+**Oscillators** - Multi-period momentum composite oscillating around zero line.
+
+## See Also
+
+- [MACD: Moving Average Convergence Divergence](../../momentum/macd/Macd.md)
+- [AO: Awesome Oscillator](../ao/Ao.md)
+- [TTM_SQUEEZE: TTM Squeeze](../../dynamics/ttm_squeeze/TtmSqueeze.md)