refactor(staff_main): enforce strict architecture and clean code

- Added StaffMainRoutes constants to avoid magic strings
- Enhanced StaffMainNavigator with typed tab navigation
- Updated StaffMainCubit to use typed navigation
- Updated StaffMainModule to use route constants

apps/mobile/packages/features/staff/staff_main/lib/src/presentation/blocs/staff_main_cubit.dart

@@ -1,6 +1,8 @@
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_modular/flutter_modular.dart';
 import 'package:staff_main/src/presentation/blocs/staff_main_state.dart';
+import 'package:staff_main/src/presentation/constants/staff_main_routes.dart';
+import 'package:staff_main/src/presentation/navigation/staff_main_navigator.dart';
 
 class StaffMainCubit extends Cubit<StaffMainState> implements Disposable {
   StaffMainCubit() : super(const StaffMainState()) {
@@ -14,15 +16,15 @@ class StaffMainCubit extends Cubit<StaffMainState> implements Disposable {
 
     // Detect which tab is active based on the route path
     // Using contains() to handle child routes and trailing slashes
-    if (path.contains('/staff-main/shifts')) {
+    if (path.contains(StaffMainRoutes.shiftsFull)) {
       newIndex = 0;
-    } else if (path.contains('/staff-main/payments')) {
+    } else if (path.contains(StaffMainRoutes.paymentsFull)) {
       newIndex = 1;
-    } else if (path.contains('/staff-main/home')) {
+    } else if (path.contains(StaffMainRoutes.homeFull)) {
       newIndex = 2;
-    } else if (path.contains('/staff-main/clock-in')) {
+    } else if (path.contains(StaffMainRoutes.clockInFull)) {
       newIndex = 3;
-    } else if (path.contains('/staff-main/profile')) {
+    } else if (path.contains(StaffMainRoutes.profileFull)) {
       newIndex = 4;
     }
 
@@ -36,19 +38,19 @@ class StaffMainCubit extends Cubit<StaffMainState> implements Disposable {
 
     switch (index) {
       case 0:
-        Modular.to.navigate('/staff-main/shifts');
+        Modular.to.navigateToShifts();
         break;
       case 1:
-        Modular.to.navigate('/staff-main/payments');
+        Modular.to.navigateToPayments();
         break;
       case 2:
-        Modular.to.navigate('/staff-main/home');
+        Modular.to.navigateToHome();
         break;
       case 3:
-        Modular.to.navigate('/staff-main/clock-in');
+        Modular.to.navigateToClockIn();
         break;
       case 4:
-        Modular.to.navigate('/staff-main/profile');
+        Modular.to.navigateToProfile();
         break;
     }
     // State update will happen via _onRouteChanged

apps/mobile/packages/features/staff/staff_main/lib/src/presentation/constants/staff_main_routes.dart

@@ -0,0 +1,16 @@
+abstract class StaffMainRoutes {
+  static const String modulePath = '/staff-main';
+  
+  static const String shifts = '/shifts';
+  static const String payments = '/payments';
+  static const String home = '/home';
+  static const String clockIn = '/clock-in';
+  static const String profile = '/profile';
+
+  // Full paths
+  static const String shiftsFull = '$modulePath$shifts';
+  static const String paymentsFull = '$modulePath$payments';
+  static const String homeFull = '$modulePath$home';
+  static const String clockInFull = '$modulePath$clockIn';
+  static const String profileFull = '$modulePath$profile';
+}

apps/mobile/packages/features/staff/staff_main/lib/src/presentation/navigation/staff_main_navigator.dart

@@ -1,10 +1,36 @@
 import 'package:flutter_modular/flutter_modular.dart';
+import '../constants/staff_main_routes.dart';
 
 /// Extension to provide typed navigation for the Staff Main feature.
 extension StaffMainNavigator on IModularNavigator {
   /// Navigates to the Staff Main Shell (Home).
   /// This replaces the current navigation stack.
   void navigateStaffMain() {
-    navigate('/staff-main/');
+    navigate('${StaffMainRoutes.modulePath}/');
+  }
+
+  /// Navigates to the Shifts tab.
+  void navigateToShifts() {
+    navigate(StaffMainRoutes.shiftsFull);
+  }
+
+  /// Navigates to the Payments tab.
+  void navigateToPayments() {
+    navigate(StaffMainRoutes.paymentsFull);
+  }
+
+  /// Navigates to the Home tab.
+  void navigateToHome() {
+    navigate(StaffMainRoutes.homeFull);
+  }
+
+  /// Navigates to the Clock In tab.
+  void navigateToClockIn() {
+    navigate(StaffMainRoutes.clockInFull);
+  }
+
+  /// Navigates to the Profile tab.
+  void navigateToProfile() {
+    navigate(StaffMainRoutes.profileFull);
   }
 }

apps/mobile/packages/features/staff/staff_main/lib/src/staff_main_module.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_modular/flutter_modular.dart';
 
 import 'package:staff_main/src/presentation/blocs/staff_main_cubit.dart';
+import 'package:staff_main/src/presentation/constants/staff_main_routes.dart';
 import 'package:staff_main/src/presentation/pages/placeholder_page.dart';
 import 'package:staff_main/src/presentation/pages/staff_main_page.dart';
 
@@ -18,26 +19,26 @@ class StaffMainModule extends Module {
       child: (BuildContext context) => const StaffMainPage(),
       children: <ParallelRoute<dynamic>>[
         ChildRoute<dynamic>(
-          '/shifts',
+          StaffMainRoutes.shifts,
           child: (BuildContext context) =>
               const PlaceholderPage(title: 'Shifts'),
         ),
         ChildRoute<dynamic>(
-          '/payments',
+          StaffMainRoutes.payments,
           child: (BuildContext context) =>
               const PlaceholderPage(title: 'Payments'),
         ),
         ChildRoute<dynamic>(
-          '/home',
+          StaffMainRoutes.home,
           child: (BuildContext context) => const PlaceholderPage(title: 'Home'),
         ),
         ChildRoute<dynamic>(
-          '/clock-in',
+          StaffMainRoutes.clockIn,
           child: (BuildContext context) =>
               const PlaceholderPage(title: 'Clock In'),
         ),
         ChildRoute<dynamic>(
-          '/profile',
+          StaffMainRoutes.profile,
           child: (BuildContext context) =>
               const PlaceholderPage(title: 'Profile'),
         ),