improve-codebase-architecture

Shallow modules in a codebase lack locality and interface leverage, creating architecture friction. You identify them by assessing dependency categories and evaluating where deepening opportunities surface testable interfaces behind small seams.

Seams are minimal adapter or port interfaces that isolate module dependencies. They improve testability by enabling targeted refactoring behind small interfaces, reducing cross-module coupling, and increasing AI-navigability while preserving behavior.

Refactor a codebase by defining candidate modules, assessing dependency categories, and outlining changes behind seams using minimal adapters or ports. This increases AI-navigability and testability by consolidating tests and aligning refactor plans with domain language.

You need deepening opportunities when shallow modules cause architecture friction and limit interface leverage. This refactoring approach targets modules with poor locality, creating seams that unlock testability and improve AI-navigability across various domains.

The best way to reduce cross-module coupling while preserving behavior is proposing minimal adapters or ports to create seams. This deepens shallow modules, consolidates tests, and aligns the architecture with domain language without breaking functionality.

Refactoring with seams works across various domains. It applies to refactoring shallow modules by aligning plans with the specific domain language, which improves maintainability, comprehension, and interface leverage while preserving behavior.