KMP Repository Pattern

Implement the repository pattern with shared interfaces in commonMain and platform-specific implementations.

Architecture Overview

Presentation   ViewModels · Composables · SwiftUI
     ↓
Domain         use cases
     ↓
Data           Repository interface        (commonMain)
               Repository implementation   (commonMain: coordinates sources,
                                            caching strategy, error mapping)
               Data sources                Remote (network) · Local (database)
                                           · Memory (cache)

Repository Interface