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/presentation/bloc/dashboard_event.dart

@@ -75,3 +75,23 @@ class LoadUpcomingEvents extends DashboardEvent {
   @override
   List<Object> get props => [organizationId, userId, limit];
 }
+
+/// Event déclenché par WebSocket pour rafraîchir le dashboard
+class RefreshDashboardFromWebSocket extends DashboardEvent {
+  final Map<String, dynamic> data;
+
+  const RefreshDashboardFromWebSocket(this.data);
+
+  @override
+  List<Object> get props => [data];
+}
+
+/// Event pour gérer les changements de statut WebSocket
+class WebSocketConnectionChanged extends DashboardEvent {
+  final bool isConnected;
+
+  const WebSocketConnectionChanged(this.isConnected);
+
+  @override
+  List<Object> get props => [isConnected];
+}