refactor(app_configuration): simplify maintenance config and update UI strings

- Replace MaintenanceConfigForm with a simple SwitchListTile for better maintainability
- Update Arabic and English localization strings for app update management and legal information
- Remove unused import of MaintenanceConfigForm
- Adjust expansion tile titles to use new localized strings

Author: fulleni

lib/app_configuration/view/tabs/app_configuration_tab.dart

@@ -1,7 +1,6 @@
 import 'package:core/core.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_news_app_web_dashboard_full_source_code/app_configuration/widgets/general_app_config_form.dart';
-import 'package:flutter_news_app_web_dashboard_full_source_code/app_configuration/widgets/maintenance_config_form.dart';
 import 'package:flutter_news_app_web_dashboard_full_source_code/app_configuration/widgets/update_config_form.dart';
 import 'package:flutter_news_app_web_dashboard_full_source_code/l10n/l10n.dart';
 import 'package:ui_kit/ui_kit.dart';
@@ -45,28 +44,26 @@ class _AppConfigurationTabState extends State<AppConfigurationTab> {
   @override
   Widget build(BuildContext context) {
     final l10n = AppLocalizationsX(context).l10n;
+    final appConfig = widget.remoteConfig.app;
+    final maintenanceConfig = appConfig.maintenance;
 
     return ListView(
       padding: const EdgeInsets.all(AppSpacing.lg),
       children: [
-        // Maintenance Config
-        ValueListenableBuilder<int?>(
-          valueListenable: _expandedTileIndex,
-          builder: (context, expandedIndex, child) {
-            const tileIndex = 0;
-            return ExpansionTile(
-              key: ValueKey('maintenanceConfigTile_$expandedIndex'),
-              title: Text(l10n.maintenanceConfigTitle),
-              onExpansionChanged: (isExpanded) {
-                _expandedTileIndex.value = isExpanded ? tileIndex : null;
-              },
-              initiallyExpanded: expandedIndex == tileIndex,
-              children: [
-                MaintenanceConfigForm(
-                  remoteConfig: widget.remoteConfig,
-                  onConfigChanged: widget.onConfigChanged,
+        // Maintenance Config as a direct SwitchListTile
+        SwitchListTile(
+          title: Text(l10n.isUnderMaintenanceLabel),
+          subtitle: Text(l10n.isUnderMaintenanceDescription),
+          value: maintenanceConfig.isUnderMaintenance,
+          onChanged: (value) {
+            widget.onConfigChanged(
+              widget.remoteConfig.copyWith(
+                app: appConfig.copyWith(
+                  maintenance: maintenanceConfig.copyWith(
+                    isUnderMaintenance: value,
+                  ),
                 ),
-              ],
+              ),
             );
           },
         ),
@@ -79,7 +76,7 @@ class _AppConfigurationTabState extends State<AppConfigurationTab> {
             const tileIndex = 1;
             return ExpansionTile(
               key: ValueKey('updateConfigTile_$expandedIndex'),
-              title: Text(l10n.updateConfigTitle),
+              title: Text(l10n.appUpdateManagementTitle),
               onExpansionChanged: (isExpanded) {
                 _expandedTileIndex.value = isExpanded ? tileIndex : null;
               },
@@ -102,7 +99,7 @@ class _AppConfigurationTabState extends State<AppConfigurationTab> {
             const tileIndex = 2;
             return ExpansionTile(
               key: ValueKey('generalAppConfigTile_$expandedIndex'),
-              title: Text(l10n.generalAppConfigTitle),
+              title: Text(l10n.appLegalInformationTitle),
               onExpansionChanged: (isExpanded) {
                 _expandedTileIndex.value = isExpanded ? tileIndex : null;
               },

lib/l10n/app_localizations.dart

@@ -2891,7 +2891,7 @@ abstract class AppLocalizations {
   /// Tab title for global App settings.
   ///
   /// In en, this message translates to:
-  /// **'App'**
+  /// **'General'**
   String get appTab;
 
   /// Tab title for Features settings (Ads, Notifications, etc.).
@@ -3061,6 +3061,18 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'Maximum number of headlines this user role can save.'**
   String get savedHeadlinesLimitDescription;
+
+  /// Title for the Application Update Management expansion tile.
+  ///
+  /// In en, this message translates to:
+  /// **'Application Update Management'**
+  String get appUpdateManagementTitle;
+
+  /// Title for the Legal & General Information expansion tile.
+  ///
+  /// In en, this message translates to:
+  /// **'Legal & General Information'**
+  String get appLegalInformationTitle;
 }
 
 class _AppLocalizationsDelegate

lib/l10n/app_localizations_ar.dart

@@ -1547,7 +1547,7 @@ class AppLocalizationsAr extends AppLocalizations {
   String get pushNotificationProviderOneSignal => 'OneSignal';
 
   @override
-  String get appTab => 'التطبيق';
+  String get appTab => 'الإعدادات العامة';
 
   @override
   String get featuresTab => 'الميزات';
@@ -1643,4 +1643,10 @@ class AppLocalizationsAr extends AppLocalizations {
   @override
   String get savedHeadlinesLimitDescription =>
       'الحد الأقصى لعدد العناوين التي يمكن لهذا الدور المستخدم حفظها.';
+
+  @override
+  String get appUpdateManagementTitle => 'إدارة تحديثات التطبيق';
+
+  @override
+  String get appLegalInformationTitle => 'المعلومات القانونية والعامة';
 }

lib/l10n/app_localizations_en.dart

@@ -1550,7 +1550,7 @@ class AppLocalizationsEn extends AppLocalizations {
   String get pushNotificationProviderOneSignal => 'OneSignal';
 
   @override
-  String get appTab => 'App';
+  String get appTab => 'General';
 
   @override
   String get featuresTab => 'Features';
@@ -1646,4 +1646,10 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get savedHeadlinesLimitDescription =>
       'Maximum number of headlines this user role can save.';
+
+  @override
+  String get appUpdateManagementTitle => 'Application Update Management';
+
+  @override
+  String get appLegalInformationTitle => 'Legal & General Information';
 }

lib/l10n/arb/app_ar.arb

@@ -1946,7 +1946,7 @@
   "@pushNotificationProviderOneSignal": {
     "description": "تسمية مزود الإشعارات الفورية OneSignal"
   },
-  "appTab": "التطبيق",
+  "appTab": "الإعدادات العامة",
   "@appTab": {
     "description": "عنوان تبويب إعدادات التطبيق العامة."
   },
@@ -2061,5 +2061,13 @@
   "savedHeadlinesLimitDescription": "الحد الأقصى لعدد العناوين التي يمكن لهذا الدور المستخدم حفظها.",
   "@savedHeadlinesLimitDescription": {
     "description": "وصف حد العناوين المحفوظة"
+  },
+  "appUpdateManagementTitle": "إدارة تحديثات التطبيق",
+  "@appUpdateManagementTitle": {
+    "description": "عنوان قسم إدارة تحديثات التطبيق القابل للتوسيع."
+  },
+  "appLegalInformationTitle": "المعلومات القانونية والعامة",
+  "@appLegalInformationTitle": {
+    "description": "عنوان قسم المعلومات القانونية والعامة القابل للتوسيع."
   }
 }

lib/l10n/arb/app_en.arb

@@ -1942,7 +1942,7 @@
   "@pushNotificationProviderOneSignal": {
     "description": "Label for the OneSignal push notification provider"
   },
-  "appTab": "App",
+  "appTab": "General",
   "@appTab": {
     "description": "Tab title for global App settings."
   },
@@ -2057,5 +2057,13 @@
   "savedHeadlinesLimitDescription": "Maximum number of headlines this user role can save.",
   "@savedHeadlinesLimitDescription": {
     "description": "Description for Saved Headlines Limit"
+  },
+  "appUpdateManagementTitle": "Application Update Management",
+  "@appUpdateManagementTitle": {
+    "description": "Title for the Application Update Management expansion tile."
+  },
+  "appLegalInformationTitle": "Legal & General Information",
+  "@appLegalInformationTitle": {
+    "description": "Title for the Legal & General Information expansion tile."
   }
 }