Phase 5: 系统托盘与开机自启

- 系统托盘: NotifyIcon 常驻, 程序化生成 32x32 图标, 左键切换显示/隐藏, 右键菜单(显示主界面/设置/彻底退出)

- 窗口关闭拦截: OnClosing 取消关闭改为 Hide(), 退出菜单执行真实 Shutdown()

- 开机自启: AutoStartHelper 写入/删除 HKCU\...\Run 注册表项, UI 开关按钮显示 ✔/⊗ 状态

- 静默启动: -autostart 参数下 mainWindow.Hide() 直接最小化到托盘

- 类型冲突解决: ImplicitUsings=disable + GlobalUsings.cs 统一全局 using, 消除 WPF/WinForms 共享类型冲突

- 测试: 75 tests total (含 AutoStartHelper 2 tests)

PersonalToolBox/ViewModels/MainViewModel.cs

@@ -63,6 +63,9 @@ public partial class MainViewModel : ObservableObject
     [ObservableProperty]
     private string _currentTheme = "Dark";
 
+    [ObservableProperty]
+    private bool _isAutoStart;
+
     // ───────────────────────────── 命令 ─────────────────────────────
 
     [RelayCommand]
@@ -78,6 +81,27 @@ public partial class MainViewModel : ObservableObject
         _logService.Info($"已切换到{(CurrentTheme == "Dark" ? "暗黑" : "明亮")}主题");
     }
 
+    /// <summary>
+    /// 切换开机自启动
+    /// </summary>
+    [RelayCommand]
+    private void ToggleAutoStart()
+    {
+        IsAutoStart = !IsAutoStart;
+        AutoStartHelper.SetAutoStart(IsAutoStart);
+        _dataService.Config.AutoStart = IsAutoStart;
+        _dataService.Save();
+        _logService.Info(IsAutoStart ? "已启用开机自启动" : "已关闭开机自启动");
+    }
+
+    /// <summary>
+    /// 供 MainWindow 外部调用，用于输出提示信息
+    /// </summary>
+    public void LogServiceMessage(string message)
+    {
+        _logService.Info(message);
+    }
+
     /// <summary>
     /// 打开添加工具弹窗
     /// </summary>
@@ -225,6 +249,7 @@ public partial class MainViewModel : ObservableObject
 
         SelectedCategory = AllCategory;
         CurrentTheme = _dataService.Config.Theme;
+        IsAutoStart = _dataService.Config.AutoStart;
         ThemeHelper.ApplyTheme(CurrentTheme);
     }