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/usecases/get_compte_adherent.dart

@@ -0,0 +1,18 @@
+import 'package:dartz/dartz.dart';
+import 'package:injectable/injectable.dart';
+import '../../../../core/error/failures.dart';
+import '../../../../core/usecases/usecase.dart';
+import '../entities/compte_adherent_entity.dart';
+import '../repositories/dashboard_repository.dart';
+
+@injectable
+class GetCompteAdherent implements UseCase<CompteAdherentEntity, NoParams> {
+  final DashboardRepository repository;
+
+  GetCompteAdherent(this.repository);
+
+  @override
+  Future<Either<Failure, CompteAdherentEntity>> call(NoParams params) async {
+    return await repository.getCompteAdherent();
+  }
+}

unionflow/unionflow-mobile-apps/lib/features/dashboard/domain/usecases/get_dashboard_data.dart

@@ -1,3 +1,4 @@
+import 'package:injectable/injectable.dart';
 import 'package:dartz/dartz.dart';
 import 'package:equatable/equatable.dart';
 import '../entities/dashboard_entity.dart';
@@ -5,6 +6,7 @@ import '../repositories/dashboard_repository.dart';
 import '../../../../core/error/failures.dart';
 import '../../../../core/usecases/usecase.dart';
 
+@injectable
 class GetDashboardData implements UseCase<DashboardEntity, GetDashboardDataParams> {
   final DashboardRepository repository;
 
@@ -32,6 +34,7 @@ class GetDashboardDataParams extends Equatable {
   List<Object> get props => [organizationId, userId];
 }
 
+@injectable
 class GetDashboardStats implements UseCase<DashboardStatsEntity, GetDashboardStatsParams> {
   final DashboardRepository repository;
 
@@ -59,6 +62,7 @@ class GetDashboardStatsParams extends Equatable {
   List<Object> get props => [organizationId, userId];
 }
 
+@injectable
 class GetRecentActivities implements UseCase<List<RecentActivityEntity>, GetRecentActivitiesParams> {
   final DashboardRepository repository;
 
@@ -89,6 +93,7 @@ class GetRecentActivitiesParams extends Equatable {
   List<Object> get props => [organizationId, userId, limit];
 }
 
+@injectable
 class GetUpcomingEvents implements UseCase<List<UpcomingEventEntity>, GetUpcomingEventsParams> {
   final DashboardRepository repository;