Auth Provider Wiring

There is no GetIt — every auth dependency is a Riverpod Provider declared next to its notifier. authApiServiceProvider and authStorageServiceProvider are the two leaf providers; the notifiers compose them in their build() methods.

1. authApiServiceProvider exposes a singleton AuthApiService (wraps Dio).
2. authStorageServiceProvider exposes AuthStorageService (wraps SharedPreferences).
3. loginNotifierProvider, registerNotifierProvider, forgotPasswordProvider, changePasswordProvider — each ref.read the two leaf providers in build().
4. authStateProvider (StateNotifierProvider, legacy API) exposes the global AuthState consumed app-wide.
5. userRoleProvider (defined in user_role.dart) is the third global the auth feature mutates — switchRole / setRole / saveUserRole.

• authStateProvider uses the legacy StateNotifierProvider (flutter_riverpod/legacy.dart) while all per-feature notifiers use the modern NotifierProvider — both coexist on Riverpod 3.x.
• build() is called once per notifier lifecycle; ref.read inside build is safe but ref.watch would create a rebuild loop.
• Apple/Google SDKs are constructed lazily inside the notifier methods (not in DI) so dotenv must be loaded first — main.dart guarantees ordering.

• lib/src/features/shared/auth/login/presentation/providers/auth/login_provider.dart:411 // authApiServiceProvider
• lib/src/features/shared/auth/login/presentation/providers/auth/login_provider.dart:415 // authStorageServiceProvider
• lib/src/features/shared/auth/login/presentation/providers/auth/login_provider.dart:419 // loginNotifierProvider
• lib/src/core/services/auth_storage.dart:257 // authStateProvider
• lib/src/core/services/user_role.dart

The two leaf providers are duplicated as plain class instantiations elsewhere (e.g. NotificationService also constructs AuthStorageService directly) — Riverpod is the canonical wiring but not strictly enforced.