feat(mobile): Contribution Totale + KPI dashboard membre

- MembreDashboardSyntheseModel: totalCotisationsPayeesToutTemps
- DashboardStatsEntity: contributionsAmountOnly (cotisations seules)
- Mapping: Mon Solde Total = cotisations tout temps + épargne, Contribution Totale = cotisations seules
- Engagement: fallback tauxCotisationsPerso si tauxParticipation absent
- Carte Contribution Totale utilise contributionsAmountOnly

Made-with: Cursor

unionflow/unionflow-mobile-apps/lib/features/dashboard/domain/entities/dashboard_entity.dart

@@ -8,11 +8,15 @@ class DashboardStatsEntity extends Equatable {
   final int upcomingEvents;
   final int totalContributions;
   final double totalContributionAmount;
+  /// Montant des cotisations seules (sans épargne), pour la carte « Contribution Totale » membre.
+  final double? contributionsAmountOnly;
   final int pendingRequests;
   final int completedProjects;
   final double monthlyGrowth;
   final double engagementRate;
   final DateTime lastUpdated;
+  final int? totalOrganizations;
+  final Map<String, int>? organizationTypeDistribution;
 
   const DashboardStatsEntity({
     required this.totalMembers,
@@ -21,11 +25,14 @@ class DashboardStatsEntity extends Equatable {
     required this.upcomingEvents,
     required this.totalContributions,
     required this.totalContributionAmount,
+    this.contributionsAmountOnly,
     required this.pendingRequests,
     required this.completedProjects,
     required this.monthlyGrowth,
     required this.engagementRate,
     required this.lastUpdated,
+    this.totalOrganizations,
+    this.organizationTypeDistribution,
   });
 
   // Méthodes utilitaires
@@ -50,11 +57,14 @@ class DashboardStatsEntity extends Equatable {
         upcomingEvents,
         totalContributions,
         totalContributionAmount,
+        contributionsAmountOnly,
         pendingRequests,
         completedProjects,
         monthlyGrowth,
         engagementRate,
         lastUpdated,
+        totalOrganizations,
+        organizationTypeDistribution,
       ];
 }
 
@@ -148,10 +158,16 @@ class UpcomingEventEntity extends Equatable {
   bool get isFull => currentParticipants >= maxParticipants;
   double get fillPercentage => maxParticipants > 0 ? currentParticipants / maxParticipants : 0.0;
   
+  int get daysUntilEventInt {
+    final now = DateTime.now();
+    final difference = startDate.difference(now);
+    return difference.inDays;
+  }
+
   String get daysUntilEvent {
     final now = DateTime.now();
     final difference = startDate.difference(now);
-    
+
     if (difference.inDays > 0) {
       return '${difference.inDays} jour${difference.inDays > 1 ? 's' : ''}';
     } else if (difference.inHours > 0) {
@@ -163,6 +179,14 @@ class UpcomingEventEntity extends Equatable {
     }
   }
 
+  String get formattedDate {
+    final months = ['Jan', 'Fév', 'Mar', 'Avr', 'Mai', 'Jun',
+                    'Jul', 'Aoû', 'Sep', 'Oct', 'Nov', 'Déc'];
+    return '${startDate.day} ${months[startDate.month - 1]} ${startDate.year}';
+  }
+
+  bool get hasParticipantInfo => maxParticipants > 0;
+
   bool get isToday {
     final now = DateTime.now();
     return startDate.year == now.year &&