Phase 6: 一键多开 (工具组合) 功能

- 数据模型: ToolItem 新增 IsGroup(bool) + SubToolIds(List<string>) 字段

- 执行逻辑: ProcessExecutionService 改为 ExecuteAsync, 组合卡片遍历子工具逐一启动(500ms延迟), 孤儿ID跳过并打印警告

- 组合编辑: GroupEditViewModel + GroupEditWindow, 复选框列表勾选非组合工具

- 主界面: 标题栏新增 '+添加组合' 按钮(蓝色), 组合卡片右下角显示 📦 角标

- 右键菜单: 区分 '编辑工具' (普通) 和 '编辑组合' (IsGroup=true)

- 快捷键: HotKeyManager 适配 ExecuteAsync 异步调用

- 测试: 82 tests total (ProcessExecution 4->6, GroupEdit 5 new)

PersonalToolBox/Services/ProcessExecutionService.cs

@@ -5,17 +5,20 @@ namespace PersonalToolBox.Services;
 
 /// <summary>
 /// 进程执行服务，负责启动外部工具进程并处理异常
+/// 支持一键多开：当 IsGroup 为 true 时批量启动子工具
 /// </summary>
 public class ProcessExecutionService : IProcessExecutionService
 {
     private readonly ILogService _logService;
+    private readonly IDataService _dataService;
 
-    public ProcessExecutionService(ILogService logService)
+    public ProcessExecutionService(ILogService logService, IDataService dataService)
     {
         _logService = logService;
+        _dataService = dataService;
     }
 
-    public void Execute(ToolItem tool)
+    public async Task ExecuteAsync(ToolItem tool)
     {
         if (tool == null)
         {
@@ -23,12 +26,63 @@ public class ProcessExecutionService : IProcessExecutionService
             return;
         }
 
+        // 组合卡片：遍历子工具列表逐一启动
+        if (tool.IsGroup)
+        {
+            await ExecuteGroupAsync(tool);
+            return;
+        }
+
+        // 普通工具：直接启动
         if (!tool.IsValid)
         {
             _logService.Warning($"无法运行工具 \"{tool.Name}\"，路径失效: {tool.ExecutablePath}");
             return;
         }
 
+        LaunchSingleTool(tool);
+    }
+
+    /// <summary>
+    /// 批量启动组合中的所有子工具，每次间隔 500ms 防止系统卡顿
+    /// </summary>
+    private async Task ExecuteGroupAsync(ToolItem group)
+    {
+        var subTools = new List<ToolItem>();
+
+        foreach (var subId in group.SubToolIds)
+        {
+            var subTool = _dataService.Config.Tools.FirstOrDefault(t => t.Id == subId);
+            if (subTool == null)
+            {
+                _logService.Warning($"组合启动跳过：找不到 ID 为 {subId} 的工具");
+                continue;
+            }
+            subTools.Add(subTool);
+        }
+
+        _logService.Info($"开始启动组合 \"{group.Name}\"，共 {subTools.Count} 个工具");
+
+        foreach (var subTool in subTools)
+        {
+            if (!subTool.IsValid)
+            {
+                _logService.Warning($"组合启动跳过 \"{subTool.Name}\"，路径失效: {subTool.ExecutablePath}");
+                continue;
+            }
+
+            LaunchSingleTool(subTool);
+            await Task.Delay(500);
+        }
+
+        _logService.Info($"组合 \"{group.Name}\" 启动完成");
+    }
+
+    /// <summary>
+    /// 启动单个工具进程
+    /// </summary>
+    private void LaunchSingleTool(ToolItem tool)
+    {
         try
         {
             var startInfo = new ProcessStartInfo