Sandi Metz Rules

Improves Ruby code quality and maintainability by implementing Sandi Metz's renowned four rules for object-oriented design. This skill provides a structured framework for code reviews and refactoring, helping developers identify and resolve architectural debt through precise metrics—such as limiting methods to five lines and classes to 100 lines. By integrating these heuristics directly into the development workflow, it encourages the Single Responsibility Principle, reduces complexity, and ensures that controllers remain focused on orchestration rather than business logic.

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