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

index.html

@@ -99,7 +99,7 @@
       padding-bottom: 0.3em;
     }
 
-    .markdown-section h2, 
+    .markdown-section h2,
     .markdown-section h3,
     .markdown-section h4,
     .markdown-section h5,
@@ -113,6 +113,10 @@
       padding-bottom: 0.3em;
     }
 
+    .markdown-section h3 {
+      font-size: 1.3em;
+    }
+
     .markdown-section p,
     .markdown-section ul,
     .markdown-section ol,
@@ -196,8 +200,10 @@
     }
 
     /* Pine Script syntax highlighting — GitHub dark palette */
+    .token.comment,
+    .token.block-comment,
     .token.doctype,
-    .token.annotation { color: #8b949e; font-style: italic; }
+    .token.annotation { color: green; }
     .token.type-definition { color: #79c0ff; }
     .token.class-name { color: #d2a8ff; }
     .token.constant { color: #ffa657; }