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/channels/aberr/aberr.md

@@ -1,5 +1,7 @@
 # ABERR: Aberration Bands
 
+> *Aberration measures the distance between price and its smoothed self — when the gap grows extreme, reversion whispers.*
+
 | Property         | Value                            |
 | ---------------- | -------------------------------- |
 | **Category**     | Channel                        |
@@ -73,23 +75,6 @@ $$\text{MAD} = \sigma \sqrt{\frac{2}{\pi}} \approx 0.7979\,\sigma$$
 
 Therefore ABERR with $k = 2.0$ captures approximately the same range as Bollinger Bands with $k \approx 1.596$.
 
-### Pseudo-code
-
-```
-function ABERR(source, ma_line, period, multiplier):
-    // Deviation from center line
-    deviation = |source - ma_line|
-
-    // Average absolute deviation (SMA of deviations)
-    avg_dev = SMA(deviation, period)
-
-    // Band construction
-    upper = ma_line + multiplier * avg_dev
-    lower = ma_line - multiplier * avg_dev
-
-    return [upper, lower, avg_dev]
-```
-
 ### Output Interpretation
 
 | Output | Description |