Android / KMP Dependency Injection (Koin)

Principles

• One Koin module per feature layer — create it only if there are dependencies to provide.
• Modules are assembled in :app, never in feature modules themselves.
• In Compose root composables, always inject ViewModels via koinViewModel().

Module Definitions

Prefer the constructor-reference overloads (singleOf, viewModelOf, factoryOf) — they are more concise and let Koin resolve parameters automatically. Only fall back to the lambda overloads (single { ... }, viewModel { ... }, factory { ... }) when constructor injection alone is not enough, e.g. when you need to call a factory method, pass a named/qualified dependency, or do post-construction setup.

Data layer module