fix：登录退出页

lib/features/settings/settings_page.dart

@@ -13,6 +13,7 @@ import '../../theme/yanting_tokens.dart';
 import '../../widgets/app_card.dart';
 import '../../widgets/page_header.dart';
 import '../../widgets/sheets.dart';
+import '../../widgets/states.dart';
 
 class SettingsPage extends ConsumerWidget {
   const SettingsPage({super.key});
@@ -21,6 +22,7 @@ class SettingsPage extends ConsumerWidget {
   Widget build(BuildContext context, WidgetRef ref) {
     final themeMode = ref.watch(themeModeProvider);
     final scheme = ShadTheme.of(context).colorScheme;
+    final auth = ref.watch(authControllerProvider);
 
     return Scaffold(
       appBar: AppBar(
@@ -138,6 +140,21 @@ class SettingsPage extends ConsumerWidget {
               ],
             ),
           ),
+          if (auth.loggedIn) ...[
+            const SizedBox(height: YantingSpacing.x3),
+            Text('账户', style: YantingText.sectionTitle),
+            const SizedBox(height: 12),
+            AppCard(
+              padding: EdgeInsets.zero,
+              child: _ActionTile(
+                icon: Icons.logout,
+                title: '退出登录',
+                subtitle: '退出后本地登录态会清空',
+                destructive: true,
+                onTap: () => _confirmLogout(context, ref),
+              ),
+            ),
+          ],
         ],
       ),
     );
@@ -157,6 +174,33 @@ class SettingsPage extends ConsumerWidget {
           .recordOutbound(OutboundEvent(scene: scene)),
     );
   }
+
+  Future<void> _confirmLogout(BuildContext context, WidgetRef ref) async {
+    final ok = await showShadDialog<bool>(
+      context: context,
+      variant: ShadDialogVariant.alert,
+      builder: (dialogContext) => ShadDialog.alert(
+        title: const Text('退出登录'),
+        description: const Text('退出后，本设备的登录态会清空，再次登录可继续使用。'),
+        actions: [
+          ShadButton.outline(
+            child: const Text('取消'),
+            onPressed: () => Navigator.of(dialogContext).pop(false),
+          ),
+          ShadButton(
+            child: const Text('确定退出'),
+            onPressed: () => Navigator.of(dialogContext).pop(true),
+          ),
+        ],
+      ),
+    );
+    if (ok != true) return;
+    await ref.read(authControllerProvider.notifier).logout();
+    await ref.read(profileControllerProvider.notifier).refresh();
+    if (!context.mounted) return;
+    showAppToast(context, '已退出登录');
+    context.go(AppRoutes.profile);
+  }
 }
 
 class _ThemeModeTile extends StatelessWidget {
@@ -267,3 +311,60 @@ class _LinkTile extends StatelessWidget {
     );
   }
 }
+
+class _ActionTile extends StatelessWidget {
+  const _ActionTile({
+    required this.icon,
+    required this.title,
+    required this.subtitle,
+    required this.onTap,
+    this.destructive = false,
+  });
+
+  final IconData icon;
+  final String title;
+  final String subtitle;
+  final VoidCallback onTap;
+  final bool destructive;
+
+  @override
+  Widget build(BuildContext context) {
+    final colors = ShadTheme.of(context).colorScheme;
+    final titleColor = destructive ? colors.destructive : colors.foreground;
+    return InkWell(
+      onTap: onTap,
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 15),
+        child: Row(
+          children: [
+            Icon(icon, size: 20, color: titleColor),
+            const SizedBox(width: 13),
+            Expanded(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text(
+                    title,
+                    style: YantingText.body.copyWith(
+                      color: titleColor,
+                      fontWeight: FontWeight.w600,
+                    ),
+                  ),
+                  const SizedBox(height: 4),
+                  Text(
+                    subtitle,
+                    style: YantingText.meta.copyWith(
+                      color: colors.mutedForeground,
+                      fontSize: 12.5,
+                    ),
+                  ),
+                ],
+              ),
+            ),
+            const Icon(AppIcons.arrowRight, size: 18),
+          ],
+        ),
+      ),
+    );
+  }
+}