Fixed error notifications appearing when closing the app while service mode is active.

Corrupt settings files are now automatically backed up before being reset to defaults.

Data files are now saved using atomic operations to prevent corruption during writes.

Update checks now retry automatically after network failures.

Fixed connection list occasionally becoming empty or unresponsive during refresh.

Subscription delay tests that fail no longer interfere with other operations.

Copying subscription links now shows a confirmation message.

Notification display timing has been refined for better visibility.

The app now responds more quickly when loading.

修复了在服务模式运行时关闭应用弹出错误提示的问题。

损坏的设置文件现在会在重置为默认值之前自动备份。

数据文件现在使用原子操作保存，防止写入过程中损坏。

更新检查在网络失败后会自动重试。

修复了连接列表在刷新时偶尔变空或无响应的问题。

订阅延迟测试失败不再影响其他操作。

复制订阅链接时现在会显示确认消息。

优化了通知显示时长，提升可见性。

应用加载时响应更快。