refactor: change singleton registrations to lazySingleton for improved performance

apps/mobile/packages/core/lib/src/core_module.dart

@@ -13,35 +13,35 @@ class CoreModule extends Module {
   @override
   void exportedBinds(Injector i) {
     // 1. Register the base HTTP client
-    i.addSingleton<Dio>(() => DioClient());
+    i.addLazySingleton<Dio>(() => DioClient());
 
     // 2. Register the base API service
-    i.addSingleton<BaseApiService>(() => ApiService(i.get<Dio>()));
+    i.addLazySingleton<BaseApiService>(() => ApiService(i.get<Dio>()));
 
     // 3. Register Core API Services (Orchestrators)
-    i.addSingleton<FileUploadService>(
+    i.addLazySingleton<FileUploadService>(
       () => FileUploadService(i.get<BaseApiService>()),
     );
-    i.addSingleton<SignedUrlService>(
+    i.addLazySingleton<SignedUrlService>(
       () => SignedUrlService(i.get<BaseApiService>()),
     );
-    i.addSingleton<VerificationService>(
+    i.addLazySingleton<VerificationService>(
       () => VerificationService(i.get<BaseApiService>()),
     );
-    i.addSingleton<LlmService>(() => LlmService(i.get<BaseApiService>()));
-    i.addSingleton<RapidOrderService>(
+    i.addLazySingleton<LlmService>(() => LlmService(i.get<BaseApiService>()));
+    i.addLazySingleton<RapidOrderService>(
       () => RapidOrderService(i.get<BaseApiService>()),
     );
 
     // 4. Register Device dependency
-    i.addSingleton<ImagePicker>(() => ImagePicker());
+    i.addLazySingleton<ImagePicker>(() => ImagePicker());
 
     // 5. Register Device Services
-    i.addSingleton<CameraService>(() => CameraService(i.get<ImagePicker>()));
-    i.addSingleton<GalleryService>(() => GalleryService(i.get<ImagePicker>()));
-    i.addSingleton<FilePickerService>(FilePickerService.new);
-    i.addSingleton<AudioRecorderService>(AudioRecorderService.new);
-    i.addSingleton<DeviceFileUploadService>(
+    i.addLazySingleton<CameraService>(() => CameraService(i.get<ImagePicker>()));
+    i.addLazySingleton<GalleryService>(() => GalleryService(i.get<ImagePicker>()));
+    i.addLazySingleton<FilePickerService>(FilePickerService.new);
+    i.addLazySingleton<AudioRecorderService>(AudioRecorderService.new);
+    i.addLazySingleton<DeviceFileUploadService>(
       () => DeviceFileUploadService(
         cameraService: i.get<CameraService>(),
         galleryService: i.get<GalleryService>(),

apps/mobile/packages/features/client/billing/lib/src/billing_module.dart

@@ -24,20 +24,20 @@ class BillingModule extends Module {
   @override
   void binds(Injector i) {
     // Repositories
-    i.addSingleton<BillingRepository>(BillingRepositoryImpl.new);
+    i.addLazySingleton<BillingRepository>(BillingRepositoryImpl.new);
 
     // Use Cases
-    i.addSingleton(GetBankAccountsUseCase.new);
-    i.addSingleton(GetCurrentBillAmountUseCase.new);
-    i.addSingleton(GetSavingsAmountUseCase.new);
-    i.addSingleton(GetPendingInvoicesUseCase.new);
-    i.addSingleton(GetInvoiceHistoryUseCase.new);
-    i.addSingleton(GetSpendingBreakdownUseCase.new);
-    i.addSingleton(ApproveInvoiceUseCase.new);
-    i.addSingleton(DisputeInvoiceUseCase.new);
+    i.addLazySingleton(GetBankAccountsUseCase.new);
+    i.addLazySingleton(GetCurrentBillAmountUseCase.new);
+    i.addLazySingleton(GetSavingsAmountUseCase.new);
+    i.addLazySingleton(GetPendingInvoicesUseCase.new);
+    i.addLazySingleton(GetInvoiceHistoryUseCase.new);
+    i.addLazySingleton(GetSpendingBreakdownUseCase.new);
+    i.addLazySingleton(ApproveInvoiceUseCase.new);
+    i.addLazySingleton(DisputeInvoiceUseCase.new);
 
     // BLoCs
-    i.addSingleton<BillingBloc>(
+    i.addLazySingleton<BillingBloc>(
       () => BillingBloc(
         getBankAccounts: i.get<GetBankAccountsUseCase>(),
         getCurrentBillAmount: i.get<GetCurrentBillAmountUseCase>(),

apps/mobile/packages/features/client/client_coverage/lib/src/coverage_module.dart

@@ -16,14 +16,14 @@ class CoverageModule extends Module {
   @override
   void binds(Injector i) {
     // Repositories
-    i.addSingleton<CoverageRepository>(CoverageRepositoryImpl.new);
+    i.addLazySingleton<CoverageRepository>(CoverageRepositoryImpl.new);
 
     // Use Cases
-    i.addSingleton(GetShiftsForDateUseCase.new);
-    i.addSingleton(GetCoverageStatsUseCase.new);
+    i.addLazySingleton(GetShiftsForDateUseCase.new);
+    i.addLazySingleton(GetCoverageStatsUseCase.new);
 
     // BLoCs
-    i.addSingleton<CoverageBloc>(CoverageBloc.new);
+    i.addLazySingleton<CoverageBloc>(CoverageBloc.new);
   }
 
   @override

apps/mobile/packages/features/client/client_main/lib/src/client_main_module.dart

@@ -13,7 +13,7 @@ import 'presentation/pages/client_main_page.dart';
 class ClientMainModule extends Module {
   @override
   void binds(Injector i) {
-    i.addSingleton(ClientMainCubit.new);
+    i.addLazySingleton(ClientMainCubit.new);
   }
 
   @override

apps/mobile/packages/features/client/orders/view_orders/lib/src/view_orders_module.dart

@@ -27,7 +27,7 @@ class ViewOrdersModule extends Module {
     i.add(GetAcceptedApplicationsForDayUseCase.new);
 
     // BLoCs
-    i.addSingleton(ViewOrdersCubit.new);
+    i.addLazySingleton(ViewOrdersCubit.new);
   }
 
   @override

apps/mobile/packages/features/staff/home/lib/src/staff_home_module.dart

@@ -33,7 +33,7 @@ class StaffHomeModule extends Module {
     );
 
     // Presentation layer - Cubits
-    i.addSingleton(
+    i.addLazySingleton(
       () => HomeCubit(
         repository: i.get<HomeRepository>(),
         getProfileCompletion: i.get<GetProfileCompletionUseCase>(),

apps/mobile/packages/features/staff/profile/lib/src/staff_profile_module.dart

@@ -68,7 +68,7 @@ class StaffProfileModule extends Module {
 
     // Presentation layer - Cubit as singleton to avoid recreation
     // BlocProvider will use this same instance, preventing state emission after close
-    i.addSingleton<ProfileCubit>(
+    i.addLazySingleton<ProfileCubit>(
       () => ProfileCubit(
         i.get<GetStaffProfileUseCase>(),
         i.get<SignOutStaffUseCase>(),

apps/mobile/packages/features/staff/profile_sections/support/faqs/lib/src/staff_faqs_module.dart

@@ -17,17 +17,17 @@ class FaqsModule extends Module {
   @override
   void binds(Injector i) {
     // Repository
-    i.addSingleton<FaqsRepositoryInterface>(
+    i.addLazySingleton<FaqsRepositoryInterface>(
       () => FaqsRepositoryImpl(),
     );
 
     // Use Cases
-    i.addSingleton(
+    i.addLazySingleton(
       () => GetFaqsUseCase(
         i<FaqsRepositoryInterface>(),
       ),
     );
-    i.addSingleton(
+    i.addLazySingleton(
       () => SearchFaqsUseCase(
         i<FaqsRepositoryInterface>(),
       ),

apps/mobile/packages/features/staff/profile_sections/support/privacy_security/lib/src/staff_privacy_security_module.dart

@@ -25,29 +25,29 @@ class PrivacySecurityModule extends Module {
   @override
   void binds(Injector i) {
     // Repository
-    i.addSingleton<PrivacySettingsRepositoryInterface>(
+    i.addLazySingleton<PrivacySettingsRepositoryInterface>(
       () => PrivacySettingsRepositoryImpl(
         Modular.get<DataConnectService>(),
       ),
     );
 
     // Use Cases
-    i.addSingleton(
+    i.addLazySingleton(
       () => GetProfileVisibilityUseCase(
         i<PrivacySettingsRepositoryInterface>(),
       ),
     );
-    i.addSingleton(
+    i.addLazySingleton(
       () => UpdateProfileVisibilityUseCase(
         i<PrivacySettingsRepositoryInterface>(),
       ),
     );
-    i.addSingleton(
+    i.addLazySingleton(
       () => GetTermsUseCase(
         i<PrivacySettingsRepositoryInterface>(),
       ),
     );
-    i.addSingleton(
+    i.addLazySingleton(
       () => GetPrivacyPolicyUseCase(
         i<PrivacySettingsRepositoryInterface>(),
       ),

apps/mobile/packages/features/staff/staff_main/lib/src/staff_main_module.dart

@@ -26,12 +26,12 @@ class StaffMainModule extends Module {
   @override
   void binds(Injector i) {
     // Register the StaffConnectorRepository from data_connect
-    i.addSingleton<StaffConnectorRepository>(
+    i.addLazySingleton<StaffConnectorRepository>(
       StaffConnectorRepositoryImpl.new,
     );
     
     // Register the use case from data_connect
-    i.addSingleton(
+    i.addLazySingleton(
       () => GetProfileCompletionUseCase(
         repository: i.get<StaffConnectorRepository>(),
       ),