fix(ai-sdk): warewashing-scoped supersession of generic thermal duplicates

The generic hot-surface patterns HP016 (high_temperature) and HP018 (actuator
burn) fire for dishwashers via broad tags and duplicate the precise warewashing
pattern HP2201 (Boiler/Tank/Spuelkammer). Suppress HP016/HP018 only when
dom_warewashing is present, so the specific pattern wins and the duplicate is
dropped. Scoped to the domain tag -> Kistenhub/Bremse and every non-warewashing
machine keep the generic patterns unchanged.

Warewashing recall stays 100% (25/25), precision 90% -> 92.6% (2 dupes removed).
Bremse 26 pins and Kistenhub benchmark unaffected.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

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

@@ -416,6 +416,11 @@ func patternMatches(p HazardPattern, tagSet map[string]bool, input MatchInput) b
 		return false
 	}
 
+	// Domain-specific supersession (generic duplicate replaced by a precise one).
+	if supersededByDomainSpecific(p, tagSet) {
+		return false
+	}
+
 	return true
 }