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To reduce coupling and establish maintainable module boundaries, apply boundary-first design guidance to prevent feature leakage across layers, specify dependency direction, and enforce scope during design reviews and refactoring sessions.

Boundary-first design is an approach that clarifies and enforces module boundaries to improve testability and reduce coupling. Use it during architecture reviews, design sessions, and PR validations to ensure long-term maintainability.

You can request a boundary-first refactor plan for a specific module to receive recommended boundaries, risk checks, and a step-by-step rollout that enables safe incremental refactoring and improves code maintainability.

Yes, you can enforce architecture-safe changes during PR validations by checking dependency direction and module boundaries, collaborating with testing and git operations skills to ensure safe incremental refactors.

Yes, boundary-first design guidance specifically prevents feature leakage across layers by clarifying module scope, enforcing dependency direction, and establishing durable boundaries during architecture reviews and design sessions.

Modular design refactoring requires careful boundary specification and risk checks, as poorly defined boundaries or ignored dependency directions can introduce feature leakage and increase coupling instead of improving maintainability.