ln-642-layer-boundary-auditor

> **Paths:** File paths (`shared/`, `references/`, `../ln-*`) are relative to skills repo root. If not found at CWD, locate this SKILL.md directory and go up one level for repo root. If `shared/` is missing, fetch files via WebFetch from `https://raw.githubusercontent.com/levnikolaevich/claude-code-skills/master/skills/{path}`. # Layer Boundary Auditor **Type:** L3 Worker L3 Worker that audits architectural layer boundaries and detects violations. ## Purpose & Scope - Read architecture.md to discover project's layer structure - Detect layer violations (I/O code outside infrastructure layer) - **Detect cross-layer consistency issues:** - Transaction boundaries (commit/rollback ownership) - Session ownership (DI vs local) - Check pattern coverage (all HTTP calls use client abstraction) - Detect error handling duplication - Return violations list to coordinator **Out of Scope** (owned by ln-628-concurrency-auditor): - Blocking I/O in async functions (sync open/read in async def) - Fire-and-forget tasks (create_task without error handler) ## Input (from ln-640) ``` - architecture_path: string # Path to docs/architecture.md - codebase_root: string # Root directory to scan - skip_violations: string[] # Files to skip (legacy) - output_dir: string # e.g., ".hex-skills/runtime-artifacts/runs/{run_id}/audit-report" # Domain-aware (optional, from coordinator) - domain_mode: "global" | "domain-aware" # Default: "global" - current_domain: string ...