Use for mobile UI/UX standards, accessibility compliance, mobile architecture/design patterns, and offline-first data persistence. Triggers on Apple HIG, Material Design 3 / M3 Expressive, touch-target sizing, dark mode, design tokens, WCAG 2.2 AA and the EU Accessibility Act (EAA/BFSG), Clean Architecture / MVVM / MVI, Repository pattern, offline-first sync & conflict resolution (LWW/CRDT), feature flags / remote config, push architecture (APNs/FCM/Azure Notification Hubs), and persistence libraries MMKV, WatermelonDB, Realm (EOL), and SQLCipher / op-sqlite / expo-sqlite.
