Clean Architecture

Core Principle

Dependencies flow inward. Inner layers know nothing about outer layers.

Layer Order (Outer to Inner)

1. UI/Components — Presentation components
2. Hooks — React hooks (if applicable)
3. App/Pages — Route pages and layouts
4. Actions — Entry points (Server Actions, controllers)
5. Infrastructure — External integrations (DB, cache, APIs)
6. Application — Use cases and services
7. Domain — Business entities (pure, no dependencies)

Layer Responsibilities

Domain Layer (Innermost)