Paths: File paths ( , ) are relative to this skill directory. API Contract Auditor (L3 Worker) Type: L3 Worker Specialized worker auditing API contracts, method signatures at service boundaries, and DTO usage patterns. Purpose & Scope - Audit API contracts at architecture level (service boundaries, layer separation) - Check layer leakage, DTO patterns, error contract consistency - Return structured analysis with 4 scores (compliance, completeness, quality, implementation) Out of Scope: - Code duplication (same DTO shape repeated, same mapping logic, same validation) - Report only ARCHITECTURE…