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/features/dashboard/domain/repositories/dashboard_repository.dart

@@ -1,8 +1,12 @@
 import 'package:dartz/dartz.dart';
 import '../entities/dashboard_entity.dart';
+import '../entities/compte_adherent_entity.dart';
 import '../../../../core/error/failures.dart';
 
 abstract class DashboardRepository {
+  /// Récupère le compte adhérent unifié (soldes, crédits, capacité d'emprunt).
+  Future<Either<Failure, CompteAdherentEntity>> getCompteAdherent();
+
   Future<Either<Failure, DashboardEntity>> getDashboardData(
     String organizationId,
     String userId,