feat(features): refontes onboarding/organizations/profile/reports/settings/solidarity

- onboarding : datasource souscription, models formule/status, bloc complet
- organizations : bloc orgs + switcher + types bloc, models, pages edit/create
- profile : bloc complet avec change password, delete account, preferences
- reports : bloc avec DashboardReports + ScheduleReports + GenerateReport
- settings : language, privacy, feedback pages
- solidarity : bloc complet demandes d'aide (CRUD, approuver, rejeter)

lib/features/settings/presentation/bloc/system_settings_event.dart

@@ -10,25 +10,63 @@ abstract class SystemSettingsEvent extends Equatable {
   List<Object?> get props => [];
 }
 
+// ── Chargement ─────────────────────────────────────────────────────────────
 class LoadSystemConfig extends SystemSettingsEvent {}
+class LoadCacheStats extends SystemSettingsEvent {}
+class LoadSystemMetrics extends SystemSettingsEvent {}
 
+// ── Configuration ──────────────────────────────────────────────────────────
 class UpdateSystemConfig extends SystemSettingsEvent {
   final Map<String, dynamic> config;
-
   const UpdateSystemConfig(this.config);
-
   @override
   List<Object?> get props => [config];
 }
 
-class LoadCacheStats extends SystemSettingsEvent {}
-
-class LoadSystemMetrics extends SystemSettingsEvent {}
-
-class ClearCache extends SystemSettingsEvent {}
+class ResetSystemConfig extends SystemSettingsEvent {}
 
+// ── Tests ───────────────────────────────────────────────────────────────────
 class TestDatabaseConnection extends SystemSettingsEvent {}
-
 class TestEmailConfiguration extends SystemSettingsEvent {}
 
-class ResetSystemConfig extends SystemSettingsEvent {}
+// ── Cache ────────────────────────────────────────────────────────────────────
+class ClearCache extends SystemSettingsEvent {}
+
+// ── Base de données ──────────────────────────────────────────────────────────
+class OptimizeDatabase extends SystemSettingsEvent {}
+
+// ── Sécurité ─────────────────────────────────────────────────────────────────
+class ForceGlobalLogout extends SystemSettingsEvent {}
+class CleanupSessions extends SystemSettingsEvent {}
+class ExportGDPRData extends SystemSettingsEvent {}
+
+// ── Logs ─────────────────────────────────────────────────────────────────────
+class CleanOldLogs extends SystemSettingsEvent {}
+class ExportLogs extends SystemSettingsEvent {}
+
+// ── Données ──────────────────────────────────────────────────────────────────
+class PurgeExpiredData extends SystemSettingsEvent {}
+
+// ── Performance ──────────────────────────────────────────────────────────────
+class AnalyzePerformance extends SystemSettingsEvent {}
+
+// ── Sauvegarde ────────────────────────────────────────────────────────────────
+class CreateBackup extends SystemSettingsEvent {}
+
+// ── Maintenance ───────────────────────────────────────────────────────────────
+class ScheduleMaintenance extends SystemSettingsEvent {
+  final String? scheduledAt;
+  final String? reason;
+  const ScheduleMaintenance({this.scheduledAt, this.reason});
+  @override
+  List<Object?> get props => [scheduledAt, reason];
+}
+
+class EmergencyMaintenance extends SystemSettingsEvent {}
+
+// ── Mises à jour ──────────────────────────────────────────────────────────────
+class CheckUpdates extends SystemSettingsEvent {}
+
+// ── Rapports ──────────────────────────────────────────────────────────────────
+class GenerateAuditReport extends SystemSettingsEvent {}
+class GenerateUsageReport extends SystemSettingsEvent {}