forward-only-layers

name	forward-only-layers
description	Enforce six-layer forward-only imports: types -> config -> repositories -> services -> runtime -> ui

Forward-Only Layers

Rules

1. Layer order is types -> config -> repositories -> services -> runtime -> ui.
2. Outer layers can import inner layers. Inner layers cannot import outer layers.
3. UI/runtime must not skip services to import repositories or ORM clients.
4. Services must not import runtime, UI, route handlers, or framework response types.
5. Cross-cutting concerns go through providers.
6. Cycles are forbidden.

Checklist

• Import direction follows the layer order
• No direct UI/runtime to repository or ORM access
• No service to runtime/UI dependency
• Cycles are checked with madge or equivalent
• dependency-cruiser rule comments point to ADRs where needed