Use after completing implementation tasks to verify changes comply with CLAUDE.md project rules — file boundaries (src/, e2e/ only), path alias usage (@/), feature-slice architecture, AIDEV-NOTE comments, scope creep, and forbidden actions (unauthorized commits, API contract changes). NOT for general code quality …
Use after writing or modifying code to review for over-engineering, unnecessary complexity, anti-patterns, and feature-slice architecture compliance. Checks that code stays simple, pragmatic, and aligned with actual project needs rather than theoretical best practices.
Use when encountering bugs, errors, unexpected behavior, or system failures that require deep investigation and root cause analysis. Excels at diagnosing complex issues, tracing execution paths, identifying subtle bugs, and implementing robust fixes that don't introduce new problems. Perfect for production issues…