feat(dynamics): add PlusDI, MinusDI, PlusDM, MinusDM indicators

Complete thin Dx-composition wrapper indicators with full test coverage:

- PlusDi/MinusDi: Directional Indicator wrappers (DiPlus/DiMinus from Dx)
- PlusDm/MinusDm: Directional Movement wrappers (DmPlus/DmMinus from Dx)
- Individual validation tests per indicator directory (TALib, Skender, bounds)
- Combined unit tests (DiDm.Tests.cs) and validation tests (DiDm.Validation.Tests.cs)
- Quantower wrappers + tests for all 4 indicators
- PineScript v6 implementations with compensated RMA
- Normalized .md documentation for all indicators and categories
- 182 tests passing, 0 failures

lib/reversals/pivotext/Pivotext.md

@@ -1,5 +1,7 @@
 # PIVOTEXT: Extended Traditional Pivot Points
 
+> *Classic pivots tell you where the crowd expects the market to pause. Extended pivots tell you where the crowd starts to panic.*
+
 | Property         | Value                            |
 | ---------------- | -------------------------------- |
 | **Category**     | Reversal                        |
@@ -16,8 +18,6 @@
 - Requires `2` bars of warmup before first valid output (IsHot = true).
 - Validated against TA-Lib, Skender, and Tulip reference implementations where available.
 
-> "Classic pivots tell you where the crowd expects the market to pause. Extended pivots tell you where the crowd starts to panic."
-
 Extended Traditional Pivot Points calculate eleven horizontal support and resistance levels from the previous bar's high, low, and close. The core levels (PP, R1-R3, S1-S3) are identical to classic floor trader pivots. The extension adds R4/R5 and S4/S5 levels that project further beyond the prior bar's range, covering extreme move scenarios such as gap opens, news-driven spikes, and trend continuation through multiple prior-range increments. The formula is pure arithmetic with zero parameters.
 
 ## Historical Context