refactor: enhance navigation robustness by introducing popSafe and safePushNamedAndRemoveUntil methods and updating their usage.

apps/mobile/packages/features/client/billing/lib/src/presentation/pages/pending_invoices_page.dart

@@ -3,6 +3,7 @@ import 'package:design_system/design_system.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_modular/flutter_modular.dart';
+import 'package:krow_core/core.dart';
 
 import '../blocs/billing_bloc.dart';
 import '../blocs/billing_state.dart';
@@ -20,6 +21,7 @@ class PendingInvoicesPage extends StatelessWidget {
           appBar: UiAppBar(
             title: t.client_billing.awaiting_approval,
             showBackButton: true,
+            onLeadingPressed: () => Modular.to.toClientBilling(),
           ),
           body: _buildBody(context, state),
         );

apps/mobile/packages/features/client/client_main/lib/src/presentation/blocs/client_main_cubit.dart

@@ -46,19 +46,19 @@ class ClientMainCubit extends Cubit<ClientMainState> implements Disposable {
 
     switch (index) {
       case 0:
-        Modular.to.navigate(ClientPaths.coverage);
+        Modular.to.toClientCoverage();
         break;
       case 1:
-        Modular.to.navigate(ClientPaths.billing);
+        Modular.to.toClientBilling();
         break;
       case 2:
-        Modular.to.navigate(ClientPaths.home);
+        Modular.to.toClientHome();
         break;
       case 3:
-        Modular.to.navigate(ClientPaths.orders);
+        Modular.to.toClientOrders();
         break;
       case 4:
-        Modular.to.navigate(ClientPaths.reports);
+        Modular.to.toClientReports();
         break;
     }
     // State update will happen via _onRouteChanged

apps/mobile/packages/features/client/orders/create_order/lib/src/presentation/widgets/rapid_order/rapid_order_view.dart

@@ -80,7 +80,7 @@ class _RapidOrderFormState extends State<_RapidOrderForm> {
               subtitle: labels.subtitle,
               date: dateStr,
               time: timeStr,
-              onBack: () => Modular.to.navigate(ClientPaths.createOrder),
+              onBack: () => Modular.to.toCreateOrder(),
             ),
 
             // Content

apps/mobile/packages/features/client/reports/lib/src/presentation/widgets/reports_page/report_card.dart

@@ -2,13 +2,13 @@ import 'package:core_localization/core_localization.dart';
 import 'package:design_system/design_system.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_modular/flutter_modular.dart';
+import 'package:krow_core/core.dart';
 
 /// A quick report card widget for navigating to specific reports.
 ///
 /// Displays an icon, name, and a quick navigation to a report page.
 /// Used in the quick reports grid of the reports page.
 class ReportCard extends StatelessWidget {
-
   const ReportCard({
     super.key,
     required this.icon,
@@ -17,6 +17,7 @@ class ReportCard extends StatelessWidget {
     required this.iconColor,
     required this.route,
   });
+
   /// The icon to display for this report.
   final IconData icon;
 
@@ -35,7 +36,7 @@ class ReportCard extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return GestureDetector(
-      onTap: () => Modular.to.pushNamed(route),
+      onTap: () => Modular.to.safePush(route),
       child: Container(
         padding: const EdgeInsets.all(16),
         decoration: BoxDecoration(
@@ -86,8 +87,7 @@ class ReportCard extends StatelessWidget {
                     ),
                     const SizedBox(width: 4),
                     Text(
-                      context.t.client_reports.quick_reports
-                          .two_click_export,
+                      context.t.client_reports.quick_reports.two_click_export,
                       style: const TextStyle(
                         fontSize: 12,
                         color: UiColors.textSecondary,