feat: 添加自动同步和新订单通知功能

- 每30分钟自动增量同步订单
- 新订单到达时播放提示音、任务栏闪烁
- 窗口不在前台时弹出Toast通知（5秒后自动关闭）
- 界面右上角显示自动同步开关和倒计时（每秒更新）

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

PackagingMallShipper/ViewModels/OrderListViewModel.cs

@@ -1,8 +1,10 @@
 using System;
 using System.Collections.ObjectModel;
 using System.Linq;
+using System.Threading;
 using System.Threading.Tasks;
 using System.Windows;
+using System.Windows.Threading;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using Microsoft.Win32;
@@ -19,6 +21,9 @@ namespace PackagingMallShipper.ViewModels
         private readonly IShipService _shipService;
         private readonly IExcelService _excelService;
 
+        private DispatcherTimer _autoSyncTimer;
+        private const int AutoSyncIntervalMinutes = 30;
+
         [ObservableProperty]
         private ObservableCollection<Order> _orders = new ObservableCollection<Order>();
 
@@ -40,6 +45,15 @@ namespace PackagingMallShipper.ViewModels
         [ObservableProperty]
         private string _syncProgress = "";
 
+        [ObservableProperty]
+        private bool _autoSyncEnabled = true;
+
+        [ObservableProperty]
+        private string _nextSyncTime = "";
+
+        [ObservableProperty]
+        private DateTime? _lastSyncTime;
+
         public OrderListViewModel(
             IOrderService orderService,
             ISyncService syncService,
@@ -65,12 +79,257 @@ namespace PackagingMallShipper.ViewModels
             {
                 StatusMessage = $"发货中 {current}/{total}";
             };
+
+            // 初始化自动同步定时器
+            InitializeAutoSyncTimer();
+        }
+
+        private void InitializeAutoSyncTimer()
+        {
+            _autoSyncTimer = new DispatcherTimer
+            {
+                Interval = TimeSpan.FromMinutes(AutoSyncIntervalMinutes)
+            };
+            _autoSyncTimer.Tick += async (s, e) => await AutoSyncAsync();
+
+            // 更新下次同步时间显示的定时器（每秒更新）
+            var updateTimer = new DispatcherTimer
+            {
+                Interval = TimeSpan.FromSeconds(1)
+            };
+            updateTimer.Tick += (s, e) => UpdateNextSyncTimeDisplay();
+            updateTimer.Start();
         }
 
         public async Task InitializeAsync()
         {
             await RefreshOrdersAsync();
             await UpdateCountsAsync();
+
+            // 启动自动同步
+            StartAutoSync();
+        }
+
+        public void StartAutoSync()
+        {
+            if (_autoSyncTimer != null && AutoSyncEnabled)
+            {
+                _autoSyncTimer.Start();
+                LastSyncTime = DateTime.Now;
+                UpdateNextSyncTimeDisplay();
+                StatusMessage = $"自动同步已启动，每 {AutoSyncIntervalMinutes} 分钟同步一次";
+            }
+        }
+
+        public void StopAutoSync()
+        {
+            _autoSyncTimer?.Stop();
+            NextSyncTime = "已停止";
+        }
+
+        private void UpdateNextSyncTimeDisplay()
+        {
+            if (!AutoSyncEnabled || LastSyncTime == null)
+            {
+                NextSyncTime = "已停止";
+                return;
+            }
+
+            var nextSync = LastSyncTime.Value.AddMinutes(AutoSyncIntervalMinutes);
+            var remaining = nextSync - DateTime.Now;
+
+            if (remaining.TotalSeconds > 0)
+            {
+                NextSyncTime = $"{(int)remaining.TotalMinutes}分{remaining.Seconds}秒后同步";
+            }
+            else
+            {
+                NextSyncTime = "同步中...";
+            }
+        }
+
+        private async Task AutoSyncAsync()
+        {
+            if (IsBusy || !AutoSyncEnabled) return;
+
+            try
+            {
+                var previousPendingCount = PendingCount;
+
+                IsBusy = true;
+                StatusMessage = "自动同步中...";
+
+                var result = await _syncService.SyncOrdersAsync(SyncMode.Incremental);
+                LastSyncTime = DateTime.Now;
+
+                await RefreshOrdersAsync();
+                await UpdateCountsAsync();
+
+                // 检查是否有新订单
+                if (result.NewCount > 0)
+                {
+                    // 发送系统通知
+                    ShowNewOrderNotification(result.NewCount);
+                }
+
+                StatusMessage = $"自动同步完成 - 新增 {result.NewCount}，更新 {result.UpdatedCount} ({DateTime.Now:HH:mm:ss})";
+            }
+            catch (UnauthorizedAccessException)
+            {
+                StatusMessage = "自动同步失败: 登录已过期";
+                StopAutoSync();
+            }
+            catch (Exception ex)
+            {
+                StatusMessage = $"自动同步失败: {ex.Message}";
+            }
+            finally
+            {
+                IsBusy = false;
+                SyncProgress = "";
+                UpdateNextSyncTimeDisplay();
+            }
+        }
+
+        private void ShowNewOrderNotification(int newOrderCount)
+        {
+            // 使用 Windows 系统托盘通知
+            Application.Current.Dispatcher.Invoke(() =>
+            {
+                var mainWindow = Application.Current.MainWindow;
+
+                // 如果窗口最小化或不在前台，显示通知
+                if (mainWindow != null)
+                {
+                    // 闪烁任务栏
+                    FlashWindow(mainWindow);
+
+                    // 播放系统提示音
+                    System.Media.SystemSounds.Exclamation.Play();
+
+                    // 如果窗口不在前台，弹出消息提示
+                    if (!mainWindow.IsActive)
+                    {
+                        // 使用 Toast 样式的通知
+                        var notification = new Window
+                        {
+                            Title = "新订单通知",
+                            Width = 300,
+                            Height = 120,
+                            WindowStyle = WindowStyle.ToolWindow,
+                            Topmost = true,
+                            ShowInTaskbar = false,
+                            WindowStartupLocation = WindowStartupLocation.Manual,
+                            ResizeMode = ResizeMode.NoResize
+                        };
+
+                        // 定位到屏幕右下角
+                        var workArea = SystemParameters.WorkArea;
+                        notification.Left = workArea.Right - notification.Width - 10;
+                        notification.Top = workArea.Bottom - notification.Height - 10;
+
+                        var content = new System.Windows.Controls.StackPanel
+                        {
+                            Margin = new Thickness(15),
+                            VerticalAlignment = VerticalAlignment.Center
+                        };
+
+                        content.Children.Add(new System.Windows.Controls.TextBlock
+                        {
+                            Text = $"📦 收到 {newOrderCount} 个新订单！",
+                            FontSize = 16,
+                            FontWeight = FontWeights.Bold,
+                            Margin = new Thickness(0, 0, 0, 10)
+                        });
+
+                        content.Children.Add(new System.Windows.Controls.TextBlock
+                        {
+                            Text = $"待发货订单：{PendingCount} 个",
+                            FontSize = 13,
+                            Foreground = System.Windows.Media.Brushes.Gray
+                        });
+
+                        notification.Content = content;
+
+                        // 5秒后自动关闭
+                        var closeTimer = new DispatcherTimer
+                        {
+                            Interval = TimeSpan.FromSeconds(5)
+                        };
+                        closeTimer.Tick += (s, e) =>
+                        {
+                            closeTimer.Stop();
+                            notification.Close();
+                        };
+
+                        notification.MouseLeftButtonDown += (s, e) =>
+                        {
+                            notification.Close();
+                            mainWindow.Activate();
+                            if (mainWindow.WindowState == WindowState.Minimized)
+                                mainWindow.WindowState = WindowState.Normal;
+                        };
+
+                        notification.Show();
+                        closeTimer.Start();
+                    }
+                    else
+                    {
+                        // 窗口在前台时，只显示状态栏消息
+                        StatusMessage = $"📦 收到 {newOrderCount} 个新订单！待发货 {PendingCount} 个";
+                    }
+                }
+            });
+        }
+
+        private void FlashWindow(Window window)
+        {
+            // 简单的窗口闪烁效果
+            try
+            {
+                var hwnd = new System.Windows.Interop.WindowInteropHelper(window).Handle;
+                if (hwnd != IntPtr.Zero)
+                {
+                    var info = new FLASHWINFO
+                    {
+                        cbSize = Convert.ToUInt32(System.Runtime.InteropServices.Marshal.SizeOf(typeof(FLASHWINFO))),
+                        hwnd = hwnd,
+                        dwFlags = 3, // FLASHW_ALL
+                        uCount = 3,
+                        dwTimeout = 0
+                    };
+                    FlashWindowEx(ref info);
+                }
+            }
+            catch
+            {
+                // 忽略闪烁失败
+            }
+        }
+
+        [System.Runtime.InteropServices.DllImport("user32.dll")]
+        private static extern bool FlashWindowEx(ref FLASHWINFO pwfi);
+
+        [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)]
+        private struct FLASHWINFO
+        {
+            public uint cbSize;
+            public IntPtr hwnd;
+            public uint dwFlags;
+            public uint uCount;
+            public uint dwTimeout;
+        }
+
+        partial void OnAutoSyncEnabledChanged(bool value)
+        {
+            if (value)
+            {
+                StartAutoSync();
+            }
+            else
+            {
+                StopAutoSync();
+            }
         }
 
         [RelayCommand]
@@ -119,9 +378,19 @@ namespace PackagingMallShipper.ViewModels
             try
             {
                 var result = await _syncService.SyncOrdersAsync(SyncMode.Incremental);
+                LastSyncTime = DateTime.Now;
                 await RefreshOrdersAsync();
                 await UpdateCountsAsync();
-                StatusMessage = $"同步完成！新增 {result.NewCount}，更新 {result.UpdatedCount}";
+
+                if (result.NewCount > 0)
+                {
+                    StatusMessage = $"同步完成！新增 {result.NewCount}，更新 {result.UpdatedCount}";
+                    ShowNewOrderNotification(result.NewCount);
+                }
+                else
+                {
+                    StatusMessage = $"同步完成！新增 {result.NewCount}，更新 {result.UpdatedCount}";
+                }
             }
             catch (UnauthorizedAccessException)
             {
@@ -137,6 +406,7 @@ namespace PackagingMallShipper.ViewModels
             {
                 IsBusy = false;
                 SyncProgress = "";
+                UpdateNextSyncTimeDisplay();
             }
         }
 
@@ -154,6 +424,7 @@ namespace PackagingMallShipper.ViewModels
             try
             {
                 var syncResult = await _syncService.SyncOrdersAsync(SyncMode.Full);
+                LastSyncTime = DateTime.Now;
                 await RefreshOrdersAsync();
                 await UpdateCountsAsync();
                 StatusMessage = $"全量同步完成！共 {syncResult.TotalCount} 条";
@@ -165,6 +436,7 @@ namespace PackagingMallShipper.ViewModels
             finally
             {
                 IsBusy = false;
+                UpdateNextSyncTimeDisplay();
             }
         }
 
@@ -284,5 +556,10 @@ namespace PackagingMallShipper.ViewModels
         {
             // Debounce search - simple implementation
         }
+
+        public void Cleanup()
+        {
+            _autoSyncTimer?.Stop();
+        }
     }
 }

PackagingMallShipper/Views/OrderListView.xaml

@@ -15,16 +15,39 @@
         
         <!-- 统计信息 -->
         <Border Grid.Row="0" Background="#F5F7FA" CornerRadius="4" Padding="15" Margin="0,0,0,15">
-            <StackPanel Orientation="Horizontal">
+            <Grid>
-                <StackPanel Margin="0,0,40,0">
+                <StackPanel Orientation="Horizontal" HorizontalAlignment="Left">
-                    <TextBlock Text="待发货订单" FontSize="12" Foreground="#666"/>
+                    <StackPanel Margin="0,0,40,0">
-                    <TextBlock Text="{Binding PendingCount}" FontSize="24" FontWeight="Bold" Foreground="#1890FF"/>
+                        <TextBlock Text="待发货订单" FontSize="12" Foreground="#666"/>
+                        <TextBlock Text="{Binding PendingCount}" FontSize="24" FontWeight="Bold" Foreground="#1890FF"/>
+                    </StackPanel>
+                    <StackPanel>
+                        <TextBlock Text="当前列表" FontSize="12" Foreground="#666"/>
+                        <TextBlock Text="{Binding TotalCount}" FontSize="24" FontWeight="Bold" Foreground="#52C41A"/>
+                    </StackPanel>
                 </StackPanel>
-                <StackPanel>
+
-                    <TextBlock Text="当前列表" FontSize="12" Foreground="#666"/>
+                <!-- 自动同步状态 -->
-                    <TextBlock Text="{Binding TotalCount}" FontSize="24" FontWeight="Bold" Foreground="#52C41A"/>
+                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Center">
+                    <TextBlock Text="自动同步" FontSize="12" Foreground="#666" VerticalAlignment="Center" Margin="0,0,8,0"/>
+                    <CheckBox IsChecked="{Binding AutoSyncEnabled}" VerticalAlignment="Center" Margin="0,0,15,0"/>
+                    <StackPanel Orientation="Vertical" VerticalAlignment="Center">
+                        <TextBlock Text="{Binding NextSyncTime}" FontSize="11" Foreground="#999"/>
+                        <TextBlock FontSize="10" Foreground="#BBB">
+                            <TextBlock.Style>
+                                <Style TargetType="TextBlock">
+                                    <Setter Property="Text" Value="每30分钟自动同步"/>
+                                    <Style.Triggers>
+                                        <DataTrigger Binding="{Binding AutoSyncEnabled}" Value="False">
+                                            <Setter Property="Text" Value=""/>
+                                        </DataTrigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </TextBlock.Style>
+                        </TextBlock>
+                    </StackPanel>
                 </StackPanel>
-            </StackPanel>
+            </Grid>
         </Border>
         
         <!-- 工具栏 -->