feat(features): refontes adhesions/admin/auth/backup/contributions/dashboard/epargne/events

- adhesions : bloc complet avec events/states/model, dialogs paiement/rejet
- admin : users bloc, user management list/detail pages
- authentication : bloc + keycloak auth service + webview
- backup : bloc complet, repository, models
- contributions : bloc + widgets + export
- dashboard : widgets connectés (activities, events, notifications, search)
  + charts + monitoring + shortcuts
- epargne : repository, transactions, dialogs
- events : bloc complet, pages (detail, connected, wrapper), models

lib/features/dashboard/presentation/widgets/dashboard_widgets.dart

@@ -28,14 +28,14 @@ class DashboardStat extends StatelessWidget {
             children: [
               Icon(
                 icon,
-                color: color ?? AppColors.primaryGreen,
+                color: color ?? AppColors.primary,
                 size: 20,
               ),
               const Spacer(),
               Text(
                 value,
                 style: AppTypography.headerSmall.copyWith(
-                  color: color ?? AppColors.primaryGreen,
+                  color: color ?? AppColors.primary,
                   fontSize: 18,
                 ),
               ),
@@ -130,12 +130,12 @@ class DashboardQuickAction extends StatelessWidget {
           Container(
             padding: const EdgeInsets.all(10),
             decoration: BoxDecoration(
-              color: (color ?? AppColors.primaryGreen).withOpacity(0.1),
+              color: (color ?? AppColors.primary).withOpacity(0.1),
               shape: BoxShape.circle,
             ),
             child: Icon(
               icon,
-              color: color ?? AppColors.primaryGreen,
+              color: color ?? AppColors.primary,
               size: 24,
             ),
           ),
@@ -211,12 +211,12 @@ class DashboardActivity extends StatelessWidget {
           Container(
             padding: const EdgeInsets.all(6),
             decoration: BoxDecoration(
-              color: (color ?? AppColors.primaryGreen).withOpacity(0.1),
+              color: (color ?? AppColors.primary).withOpacity(0.1),
               borderRadius: BorderRadius.circular(4),
             ),
             child: Icon(
               icon,
-              color: color ?? AppColors.primaryGreen,
+              color: color ?? AppColors.primary,
               size: 14,
             ),
           ),
@@ -245,7 +245,7 @@ class DashboardActivity extends StatelessWidget {
               return Text(
                 time,
                 style: AppTypography.subtitleSmall.copyWith(
-                  color: isDark ? AppColors.textSecondaryDark : AppColors.textSecondaryLight,
+                  color: isDark ? AppColors.textSecondaryDark : AppColors.textSecondary,
                   fontSize: 9,
                 ),
               );