improve-codebase-architecture

To fix architectural friction in a monorepo, you can analyze modules for leverage and consolidate scattered logic into deep modules with clearer seams. This improves ownership and reduces duplicated wrapper complexity by proposing targeted deepening refactors.

A shallow module is an architectural unit whose interface is nearly as complex as its implementation. It hurts testability and locality by exposing unnecessary complexity, making the codebase harder to test reliably across scattered components.

Refactor shallow modules into deep ones by analyzing their dependency categories and consolidating scattered logic behind a smaller seam. Introduce adapters only when a real seam exists, making the interface the primary test surface for more reliable tests.

Yes, reading the project glossary and Architectural Decision Records (ADRs) is required. They provide necessary domain context and historical design constraints for accurately analyzing module leverage, dependency categories, and interface-level testability.

Introduce adapters only when a real seam exists between distinct system boundaries. If logic is simply scattered, consolidate it into a deeper module with a smaller interface to improve leverage and locality instead of adding unnecessary adapter layers.

The best way to identify the first refactor is to run an architecture review that finds shallow modules and candidate deepening opportunities. Analyze the leverage and dependency categories of each module to pinpoint the highest impact refactoring target.