feat: complete MVP administration tools

mobile/lib/features/profile/presentation/profile_page.dart

@@ -3,6 +3,8 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:aioa_mobile/features/profile/application/device_controller.dart';
 import 'package:intl/intl.dart';
+import 'package:aioa_mobile/features/admin/application/admin_controller.dart';
+import 'package:go_router/go_router.dart';
 
 class ProfilePage extends ConsumerWidget {
   const ProfilePage({super.key});
@@ -10,6 +12,8 @@ class ProfilePage extends ConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final devices = ref.watch(deviceListProvider);
+    final permissions =
+        ref.watch(currentPermissionsProvider).value ?? const <String>{};
     return ListView(
       padding: const EdgeInsets.all(18),
       children: [
@@ -21,6 +25,14 @@ class ProfilePage extends ConsumerWidget {
           ),
         ),
         const SizedBox(height: 12),
+        if (permissions.contains('ORGANIZATION_MANAGE_TENANT')) ...[
+          FilledButton.icon(
+            onPressed: () => context.push('/admin'),
+            icon: const Icon(Icons.admin_panel_settings),
+            label: const Text('OA 管理中心'),
+          ),
+          const SizedBox(height: 12),
+        ],
         Text('登录设备', style: Theme.of(context).textTheme.titleMedium),
         const SizedBox(height: 8),
         ...devices.when(