Services Layer

Ground service guidance in apps/whispering/src/lib/services, its consumers, and the #platform/* mappings in apps/whispering/package.json. Historical examples and neighboring skills are leads, not current architecture.

Product Sentence

The service layer owns UI-free capabilities; callers inject app policy through explicit inputs, fallible operations return Results, and platform selection has one build-time owner.

Boundary

Services may perform IO and may own service-local runtime state. They are not required to be pure functions. They must remain free of UI and app-owned policy: