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/presentation/widgets/shared/mini_metric_widget.dart

@@ -0,0 +1,47 @@
+import 'package:flutter/material.dart';
+import '../../../shared/design_system/tokens/app_colors.dart';
+import '../../../shared/design_system/tokens/app_typography.dart';
+
+/// UnionFlow Mobile - Composant DRY : MiniMetricWidget
+/// Affiche une métrique sous forme "Label (10px) / Valeur (13px)".
+/// Utilisé dans le Dashboard financier compressé.
+class MiniMetricWidget extends StatelessWidget {
+  final String label;
+  final String value;
+  final Color? valueColor;
+  final CrossAxisAlignment alignment;
+
+  const MiniMetricWidget({
+    Key? key,
+    required this.label,
+    required this.value,
+    this.valueColor,
+    this.alignment = CrossAxisAlignment.start,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: alignment,
+      children: [
+        Text(
+          label.toUpperCase(),
+          style: AppTypography.badgeText.copyWith(
+            color: Theme.of(context).brightness == Brightness.dark 
+                ? AppColors.textSecondaryDark 
+                : AppColors.textSecondaryLight,
+          ),
+        ),
+        const SizedBox(height: 2),
+        Text(
+          value,
+          style: AppTypography.actionText.copyWith(
+            color: valueColor ?? (Theme.of(context).brightness == Brightness.dark 
+                ? AppColors.textPrimaryDark 
+                : AppColors.textPrimaryLight),
+          ),
+        ),
+      ],
+    );
+  }
+}