任务列表初始化

BetterGenshinImpact/ViewModel/Pages/Component/GearTaskDefinitionViewModel.cs

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+using System;
+using System.Linq;
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace BetterGenshinImpact.ViewModel.Pages.Component;
+
+/// <summary>
+/// 任务定义模型，用于左侧列表显示
+/// </summary>
+public partial class GearTaskDefinitionViewModel : ObservableObject
+{
+    [ObservableProperty]
+    private string _name = string.Empty;
+
+    [ObservableProperty]
+    private string _description = string.Empty;
+
+    [ObservableProperty]
+    private bool _isSelected = false;
+
+    [ObservableProperty]
+    private DateTime _createdTime = DateTime.Now;
+
+    [ObservableProperty]
+    private DateTime _modifiedTime = DateTime.Now;
+
+    /// <summary>
+    /// 任务根节点
+    /// </summary>
+    [ObservableProperty]
+    private GearTaskViewModel? _rootTask;
+
+    public GearTaskDefinitionViewModel()
+    {
+    }
+
+    public GearTaskDefinitionViewModel(string name, string description = "")
+    {
+        Name = name;
+        Description = description;
+        RootTask = new GearTaskViewModel(name, true);
+    }
+
+    /// <summary>
+    /// 获取任务总数（包括所有子任务）
+    /// </summary>
+    /// <returns></returns>
+    public int GetTotalTaskCount()
+    {
+        if (RootTask == null) return 0;
+        return 1 + Enumerable.Count<GearTaskViewModel>(RootTask.GetAllChildren());
+    }
+
+    /// <summary>
+    /// 获取启用的任务数量
+    /// </summary>
+    /// <returns></returns>
+    public int GetEnabledTaskCount()
+    {
+        if (RootTask == null) return 0;
+        var count = RootTask.IsEnabled ? 1 : 0;
+        count += Enumerable.Count<GearTaskViewModel>(RootTask.GetAllChildren(), t => t.IsEnabled);
+        return count;
+    }
+}