feat: WebSocket temps réel + Finance Workflow + corrections

- Task #6: WebSocket /ws/dashboard + Kafka events (5 topics)
  * Backend: KafkaEventProducer, KafkaEventConsumer
  * Mobile: WebSocketService (reconnection, heartbeat, typed events)
  * DashboardBloc: Auto-refresh depuis WebSocket events

- Finance Workflow: approbations + budgets (backend + mobile)
  * Backend: entities, services, resources, migrations Flyway V6
  * Mobile: features finance_workflow complète avec BLoC

- Corrections DI: interfaces IRepository partout
  * IProfileRepository, IOrganizationRepository, IMembreRepository
  * GetIt configuré avec @injectable

- Spec-Kit: constitution + templates mis à jour
  * .specify/memory/constitution.md enrichie
  * Templates agent, plan, spec, tasks, checklist

- Nettoyage: fichiers temporaires supprimés

Signed-off-by: lions dev Team

unionflow/unionflow-mobile-apps/lib/app/app.dart

@@ -11,6 +11,7 @@ import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import '../shared/design_system/theme/app_theme_sophisticated.dart';
 import '../features/authentication/presentation/bloc/auth_bloc.dart';
 import '../core/l10n/locale_provider.dart';
+import '../core/di/injection.dart';
 import 'router/app_router.dart';
 
 /// Application principale avec système d'authentification Keycloak
@@ -25,7 +26,7 @@ class UnionFlowApp extends StatelessWidget {
       providers: [
         ChangeNotifierProvider.value(value: localeProvider),
         BlocProvider(
-          create: (context) => AuthBloc()..add(const AuthStatusChecked()),
+          create: (context) => getIt<AuthBloc>()..add(const AuthStatusChecked()),
         ),
       ],
       child: Consumer<LocaleProvider>(
@@ -36,8 +37,8 @@ class UnionFlowApp extends StatelessWidget {
 
             // Configuration du thème
             theme: AppThemeSophisticated.lightTheme,
-            // darkTheme: AppThemeSophisticated.darkTheme,
-            // themeMode: ThemeMode.system,
+            darkTheme: AppThemeSophisticated.darkTheme,
+            themeMode: ThemeMode.system,
 
             // Configuration de la localisation
             locale: localeProvider.locale,