feat: IACE SIL/PL calculator + Cobot patterns + library extensions

SIL/PL Calculator: Deterministic S×E×P → PL (a-e) → SIL (1-3) mapping
Cobot Patterns (HP059-HP065): Human-robot collision, afterrun, misprogramming
Press Patterns split into separate file (500-line guardrail)
5 new components (C136-C140), 5 new tags, 18 keyword entries

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ai-compliance-sdk/internal/iace/pattern_engine.go

@@ -52,11 +52,13 @@ type PatternEngine struct {
 	patterns []HazardPattern
 }
 
-// NewPatternEngine creates a PatternEngine with built-in + extended patterns and resolver.
+// NewPatternEngine creates a PatternEngine with all pattern sources and resolver.
 func NewPatternEngine() *PatternEngine {
-	// Combine built-in (HP001-HP044) and extended (HP045+) patterns
-	patterns := GetBuiltinHazardPatterns()
-	patterns = append(patterns, GetExtendedHazardPatterns()...)
+	// Combine all pattern sources
+	patterns := GetBuiltinHazardPatterns()          // HP001-HP044
+	patterns = append(patterns, GetExtendedHazardPatterns()...) // HP045+ from rule library
+	patterns = append(patterns, GetPressHazardPatterns()...)    // HP045-HP058 press-specific
+	patterns = append(patterns, GetCobotHazardPatterns()...)    // HP059-HP065 cobot-specific
 	return &PatternEngine{
 		resolver: NewTagResolver(),
 		patterns: patterns,