Language-specific pattern detection adaptations. Adjusts pattern confidence based on language idioms and conventions. Supports Python (new, @decorator), JavaScript/TypeScript (module pattern, EventEmitter), Java/C# (interfaces, Abstract Factory), Kotlin (object declaration→Singleton, companion object→Factory, sealed class→Strategy, data class→Builder), Go (sync.Once), Rust (lazystatic, OnceCell, trait adapters), C++ (Meyer's Singleton), Ruby (Singleton module), PHP (private constructor). Static method adaptfor_language(pattern, language) returns adjusted PatternInstance.