feat(ui): TaskRowViewModel gains planning hierarchy flags

Adds ParentTaskId, IsExpanded, IsChild, IsPlanningParent, IsDraft, and
PlanningBadge to TaskRowViewModel with property-changed notifications.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/ClaudeDo.Ui/ViewModels/Islands/TaskRowViewModel.cs

@@ -23,6 +23,8 @@ public sealed partial class TaskRowViewModel : ViewModelBase
     [ObservableProperty] private int _diffDeletions;
     [ObservableProperty] private bool _dropHintAbove;
     [ObservableProperty] private bool _dropHintBelow;
+    [ObservableProperty] private string? _parentTaskId;
+    [ObservableProperty] private bool _isExpanded = true;
 
     public DateTime CreatedAt { get; init; }
     public string CreatedAtFormatted => CreatedAt == default ? "—" : $"Created {CreatedAt:MMM d}";
@@ -31,6 +33,17 @@ public sealed partial class TaskRowViewModel : ViewModelBase
     public int StepsCount { get; init; }
     public int StepsCompleted { get; init; }
 
+    public bool IsChild          => !string.IsNullOrEmpty(ParentTaskId);
+    public bool IsPlanningParent => Status == TaskStatus.Planning || Status == TaskStatus.Planned;
+    public bool IsDraft          => Status == TaskStatus.Draft;
+
+    public string? PlanningBadge => Status switch
+    {
+        TaskStatus.Planning => "PLANNING",
+        TaskStatus.Planned  => "PLANNED",
+        _                   => null,
+    };
+
     public bool HasBranch   => !string.IsNullOrWhiteSpace(Branch);
     public bool HasDiff     => DiffAdditions > 0 || DiffDeletions > 0;
     public bool HasTags     => Tags.Count > 0;
@@ -60,8 +73,13 @@ public sealed partial class TaskRowViewModel : ViewModelBase
         OnPropertyChanged(nameof(IsRunning));
         OnPropertyChanged(nameof(IsQueued));
         OnPropertyChanged(nameof(HasLiveTail));
+        OnPropertyChanged(nameof(IsPlanningParent));
+        OnPropertyChanged(nameof(PlanningBadge));
+        OnPropertyChanged(nameof(IsDraft));
     }
 
+    partial void OnParentTaskIdChanged(string? value) => OnPropertyChanged(nameof(IsChild));
+
     partial void OnBranchChanged(string? value)    => OnPropertyChanged(nameof(HasBranch));
     partial void OnLiveTailChanged(string? value)  => OnPropertyChanged(nameof(HasLiveTail));
     partial void OnDoneChanged(bool value)         => OnPropertyChanged(nameof(IsOverdue));
@@ -91,6 +109,7 @@ public sealed partial class TaskRowViewModel : ViewModelBase
             DiffAdditions = add,
             DiffDeletions = del,
             CreatedAt     = t.CreatedAt,
+            ParentTaskId  = t.ParentTaskId,
         };
     }
 

tests/ClaudeDo.Worker.Tests/UiVm/TaskRowViewModelPlanningTests.cs

@@ -0,0 +1,45 @@
+using ClaudeDo.Data.Models;
+using ClaudeDo.Ui.ViewModels.Islands;
+using Xunit;
+using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
+
+namespace ClaudeDo.Worker.Tests.UiVm;
+
+public class TaskRowViewModelPlanningTests
+{
+    private static TaskRowViewModel MakeRow(TaskStatus status, string? parentTaskId = null)
+        => new TaskRowViewModel { Id = "t", Status = status, ParentTaskId = parentTaskId };
+
+    [Fact]
+    public void Draft_Status_SetsIsChildFlag_WhenParentIdIsNotNull()
+    {
+        var vm = MakeRow(TaskStatus.Draft, "parent-id");
+        Assert.True(vm.IsChild);
+        Assert.False(vm.IsPlanningParent);
+    }
+
+    [Fact]
+    public void Planning_Status_SetsIsPlanningParent()
+    {
+        var vm = MakeRow(TaskStatus.Planning);
+        Assert.True(vm.IsPlanningParent);
+        Assert.False(vm.IsChild);
+        Assert.Equal("PLANNING", vm.PlanningBadge);
+    }
+
+    [Fact]
+    public void Planned_Status_ShowsPlannedBadge()
+    {
+        var vm = MakeRow(TaskStatus.Planned);
+        Assert.True(vm.IsPlanningParent);
+        Assert.Equal("PLANNED", vm.PlanningBadge);
+    }
+
+    [Fact]
+    public void NonPlanningStatus_NoBadge()
+    {
+        var vm = MakeRow(TaskStatus.Manual);
+        Assert.False(vm.IsPlanningParent);
+        Assert.Null(vm.PlanningBadge);
+    }
+}