Optimize automatic updates

lib/presentation/pages/settings/settings_page.dart

@@ -5,6 +5,7 @@ import 'package:url_launcher/url_launcher.dart';
 import 'package:package_info_plus/package_info_plus.dart';
 import '../../../data/models/user_model.dart';
 import '../../../data/models/user_setting_model.dart';
+import '../../../services/update_service.dart';
 import '../../../services/user_setting_service.dart';
 import '../../providers/auth_provider.dart';
 import '../../providers/user_setting_provider.dart';
@@ -154,11 +155,7 @@ class _SettingsPageState extends State<SettingsPage> {
                   title: const Text('应用名称'),
                   subtitle: const Text('公云存储'),
                 ),
-                ListTile(
-                  leading: const Icon(Icons.tag),
-                  title: const Text('版本号'),
-                  subtitle: Text(_appVersion.isEmpty ? '加载中...' : _appVersion),
-                ),
+                _buildVersionTile(),
                 ListTile(
                   leading: const Icon(Icons.copyright),
                   title: const Text('License'),
@@ -404,6 +401,22 @@ class _SettingsPageState extends State<SettingsPage> {
     );
   }
 
+  Widget _buildVersionTile() {
+    return AnimatedBuilder(
+      animation: UpdateService.instance,
+      builder: (context, _) {
+        return ListTile(
+          leading: const Icon(Icons.tag),
+          title: const Text('版本号'),
+          subtitle: Text(_appVersion.isEmpty ? '加载中...' : _appVersion),
+          trailing: UpdateService.instance.hasUpdate
+              ? const _BlinkingUpdateDot()
+              : null,
+        );
+      },
+    );
+  }
+
   Widget _buildLogoutButton(BuildContext context, AuthProvider auth) {
     return Padding(
       padding: const EdgeInsets.symmetric(horizontal: 16),
@@ -628,6 +641,53 @@ class _SettingsPageState extends State<SettingsPage> {
   }
 }
 
+class _BlinkingUpdateDot extends StatefulWidget {
+  const _BlinkingUpdateDot();
+
+  @override
+  State<_BlinkingUpdateDot> createState() => _BlinkingUpdateDotState();
+}
+
+class _BlinkingUpdateDotState extends State<_BlinkingUpdateDot>
+    with SingleTickerProviderStateMixin {
+  late final AnimationController _controller;
+  late final Animation<double> _opacity;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 900),
+    )..repeat(reverse: true);
+    _opacity = Tween<double>(
+      begin: 0.3,
+      end: 1,
+    ).animate(CurvedAnimation(parent: _controller, curve: Curves.easeInOut));
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return FadeTransition(
+      opacity: _opacity,
+      child: Container(
+        width: 10,
+        height: 10,
+        decoration: const BoxDecoration(
+          color: Colors.red,
+          shape: BoxShape.circle,
+        ),
+      ),
+    );
+  }
+}
+
 class _NetworkTestConsentText extends StatefulWidget {
   final VoidCallback onOpenPrivacy;
   final VoidCallback onOpenTerms;