Enhance Customer model to include role attribute and update related components

- Added a new `role` attribute to the `Customer` model in `customer.dart` and updated the corresponding generated files.
- Modified the `AuthViewModel` to set the user role based on the logged-in user's role.
- Updated UI components in `TenderDetailActions` and `DesktopTendersPage` to conditionally render elements based on the user's role.
- Refactored tests to validate the new role attribute in the `Customer` model.

lib/views/tenders/pages/d_tenders_page.dart

@@ -17,6 +17,7 @@ import 'package:tm_app/views/tenders/widgets/tenders_sort_dialog.dart';
 
 import '../../../core/constants/common_strings.dart';
 import '../../../core/utils/app_toast.dart';
+import '../../../view_models/auth_view_model.dart';
 
 class DesktopTendersPage extends StatefulWidget {
   const DesktopTendersPage({super.key});
@@ -49,6 +50,7 @@ class _DesktopTendersPageState extends State<DesktopTendersPage> {
 
   @override
   Widget build(BuildContext context) {
+    final userRole = context.read<AuthViewModel>().userRole;
     return Scaffold(
       backgroundColor: AppColors.backgroundColor,
       body: SafeArea(
@@ -56,8 +58,8 @@ class _DesktopTendersPageState extends State<DesktopTendersPage> {
           children: [
             const DesktopNavigationWidget(currentIndex: 1),
             SizedBox(height: 48.0.h()),
-            const _SearchBox(),
-            const _ActionButtons(),
+            if (userRole == Role.analyst) const _SearchBox(),
+            if (userRole == Role.analyst) const _ActionButtons(),
             Expanded(
               child: Consumer<TendersViewModel>(
                 builder: (context, vm, child) {