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/cycles/ht_dcphase/HtDcphase.md

@@ -1,5 +1,7 @@
 # HT_DCPHASE: Ehlers Hilbert Transform Dominant Cycle Phase
 
+> *Dominant cycle phase tracks where price sits within its current cycle — the angular position of the market's heartbeat.*
+
 | Property         | Value                            |
 | ---------------- | -------------------------------- |
 | **Category**     | Cycle                        |
@@ -64,38 +66,6 @@ $O(P)$ per bar where $P$ is the smoothed period (typically 6-50), due to the DFT
 
 All internal constants are fixed by the TA-Lib specification.
 
-### Pseudo-code
-
-```
-function HT_DCPHASE(source):
-    // Same Hilbert cascade as HT_DCPERIOD
-    // ... (WMA smooth, Hilbert FIR, phasor, homodyne)
-    // Produces: smoothPeriod, smoothPriceBuf
-
-    for each bar (after warmup):
-        P ← round(smoothPeriod)
-
-        // DFT accumulation over dominant period
-        realPart ← 0; imagPart ← 0
-        for i = 0 to P-1:
-            realPart += sin(2π·i / P) · smoothPriceBuf[t - i]
-            imagPart += cos(2π·i / P) · smoothPriceBuf[t - i]
-
-        // Phase extraction
-        if |imagPart| > 0:
-            dcPhase ← atan(realPart / imagPart) · (180/π)
-        else:
-            dcPhase ← 90 · sign(realPart)
-
-        if imagPart > 0: dcPhase -= 180
-        dcPhase += 90
-
-        // Wrap to [-45, 315]
-        if dcPhase < -45: dcPhase += 360
-
-        emit dcPhase
-```
-
 ### Phase Quadrant Interpretation
 
 | Phase Range | Cycle Position |