improve-codebase-architecture

You identify shallow modules causing architectural friction, then consolidate tightly-coupled code to concentrate complexity and increase module depth. This process enhances locality and leverage while making behavior testable through defined interfaces.

Seams for ports and adapters are interface boundaries separating dependency categories during refactoring. You need them when making behavior testable through interfaces, allowing you to isolate external dependencies and define clear adapter implementations for your architecture.

You explore a codebase to find refactoring opportunities by scanning for shallow modules and architectural friction that reduces locality. The exploration produces prioritized deepening candidates with module-level evidence, detailing files involved and friction caused today.

The best way to make tightly-coupled code testable is defining seams for ports and adapters, then using an iterative grilling loop to refine the deepened module shape. This preserves the interface-as-test-surface and deletion-test principles while clarifying dependencies and test strategy.

Yes, this architecture refactoring approach applies across dependency categories by defining seams for ports and adapters tailored to each type. It supports consolidating tightly-coupled code regardless of the specific external dependency boundaries in your codebase.

Deleting or consolidating shallow modules improves testability and AI-navigability by concentrating complexity into deeper modules with higher leverage. This reduces architectural friction, increases locality of behavior, and establishes clear interfaces as test surfaces for confident changes.