Implement UI/UX enhancements with collapsible routes sidebar and glassmorphic route cards

Adds new components (CollapsibleRoutesSidebar, GlassmorphicRouteCard) and
internationalization support. Updates deliveries and routes pages with improved
navigation and visual presentation using Material Design 3 principles.

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

lib/providers/providers.dart

@@ -100,6 +100,32 @@ final deliveriesProvider = FutureProvider.family<List<Delivery>, int>((ref, rout
   return result.whenSuccess((deliveries) => deliveries) ?? [];
 });
 
+/// Provider to get all deliveries from all routes
+final allDeliveriesProvider = FutureProvider<List<Delivery>>((ref) async {
+  final routes = ref.watch(deliveryRoutesProvider).valueOrNull ?? [];
+
+  if (routes.isEmpty) {
+    return [];
+  }
+
+  // Fetch deliveries for all routes
+  final deliveriesFutures = routes.map((route) {
+    return ref.watch(deliveriesProvider(route.id)).when(
+      data: (deliveries) => deliveries,
+      loading: () => <Delivery>[],
+      error: (_, __) => <Delivery>[],
+    );
+  });
+
+  // Combine all deliveries
+  final allDeliveries = <Delivery>[];
+  for (final deliveries in deliveriesFutures) {
+    allDeliveries.addAll(deliveries);
+  }
+
+  return allDeliveries;
+});
+
 final languageProvider = StateProvider<String>((ref) {
   return 'fr';
 });