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/explore/domain/entities/network_item.dart

@@ -0,0 +1,41 @@
+import 'package:equatable/equatable.dart';
+
+/// Entité représentant un membre ou une organisation dans la recherche réseau.
+class NetworkItem extends Equatable {
+  final String id;
+  final String name;
+  final String? subtitle;
+  final String? avatarUrl;
+  final String type; // 'Member', 'Organization'
+  final bool isConnected;
+
+  const NetworkItem({
+    required this.id,
+    required this.name,
+    this.subtitle,
+    this.avatarUrl,
+    required this.type,
+    this.isConnected = false,
+  });
+
+  NetworkItem copyWith({
+    String? id,
+    String? name,
+    String? subtitle,
+    String? avatarUrl,
+    String? type,
+    bool? isConnected,
+  }) {
+    return NetworkItem(
+      id: id ?? this.id,
+      name: name ?? this.name,
+      subtitle: subtitle ?? this.subtitle,
+      avatarUrl: avatarUrl ?? this.avatarUrl,
+      type: type ?? this.type,
+      isConnected: isConnected ?? this.isConnected,
+    );
+  }
+
+  @override
+  List<Object?> get props => [id, name, subtitle, avatarUrl, type, isConnected];
+}