diff --git a/src/ClaudeDo.Ui/ViewModels/Islands/TaskRowViewModel.cs b/src/ClaudeDo.Ui/ViewModels/Islands/TaskRowViewModel.cs
index 87fa0100..1341439e 100644
--- a/src/ClaudeDo.Ui/ViewModels/Islands/TaskRowViewModel.cs
+++ b/src/ClaudeDo.Ui/ViewModels/Islands/TaskRowViewModel.cs
@@ -8,67 +8,206 @@ namespace ClaudeDo.Ui.ViewModels.Islands;
 public sealed partial class TaskRowViewModel : ViewModelBase
 {
     public required string Id { get; init; }
-    [ObservableProperty] private int _number;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowNumberBadge))]
+    private int _number;
     [ObservableProperty] private string _title = "";
     [ObservableProperty] private string _listName = "";
-    [ObservableProperty] private bool _done;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsOverdue))]
+    [NotifyPropertyChangedFor(nameof(CanAddToMyDay))]
+    private bool _done;
     [ObservableProperty] private bool _isStarred;
-    [ObservableProperty] private bool _isMyDay;
-    [ObservableProperty] private bool _isSelected;
-    [ObservableProperty] private TaskStatus _status;
-    [ObservableProperty] private PlanningPhase _planningPhase;
-    [ObservableProperty] private string? _branch;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(CanAddToMyDay))]
+    private bool _isMyDay;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowRowActions))]
+    private bool _isSelected;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(StatusChipClass))]
+    [NotifyPropertyChangedFor(nameof(StatusLabel))]
+    [NotifyPropertyChangedFor(nameof(ShowStatusChip))]
+    [NotifyPropertyChangedFor(nameof(IsRunning))]
+    [NotifyPropertyChangedFor(nameof(IsWaitingForReview))]
+    [NotifyPropertyChangedFor(nameof(IsParked))]
+    [NotifyPropertyChangedFor(nameof(IsQueued))]
+    [NotifyPropertyChangedFor(nameof(IsWaiting))]
+    [NotifyPropertyChangedFor(nameof(HasFailureReason))]
+    [NotifyPropertyChangedFor(nameof(FailureReasonTooltip))]
+    [NotifyPropertyChangedFor(nameof(StatusChipTooltip))]
+    [NotifyPropertyChangedFor(nameof(IsDraft))]
+    [NotifyPropertyChangedFor(nameof(IsPlanned))]
+    [NotifyPropertyChangedFor(nameof(CanOpenPlanningSession))]
+    [NotifyPropertyChangedFor(nameof(CanRemoveFromQueue))]
+    [NotifyPropertyChangedFor(nameof(CanSendToQueue))]
+    [NotifyPropertyChangedFor(nameof(CanRefine))]
+    [NotifyPropertyChangedFor(nameof(SendToQueueDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(CancelDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(RefineDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(PlanningDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(MarkAsDisabledReason))]
+    private TaskStatus _status;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsPlanningParent))]
+    [NotifyPropertyChangedFor(nameof(PlanningBadge))]
+    [NotifyPropertyChangedFor(nameof(ShowStatusChip))]
+    [NotifyPropertyChangedFor(nameof(IsPlanActive))]
+    [NotifyPropertyChangedFor(nameof(IsPlanFinalized))]
+    [NotifyPropertyChangedFor(nameof(CanOpenPlanningSession))]
+    [NotifyPropertyChangedFor(nameof(CanResumeOrDiscardPlanning))]
+    [NotifyPropertyChangedFor(nameof(CanQueuePlan))]
+    [NotifyPropertyChangedFor(nameof(CanSendToQueue))]
+    [NotifyPropertyChangedFor(nameof(CanFinalizePlanning))]
+    [NotifyPropertyChangedFor(nameof(CanRefine))]
+    [NotifyPropertyChangedFor(nameof(SendToQueueDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(RefineDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(PlanningDisabledReason))]
+    private PlanningPhase _planningPhase;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(HasBranch))]
+    private string? _branch;
     [ObservableProperty] private string? _diffStat;
-    [ObservableProperty] private ClaudeDo.Data.Models.WorktreeState? _worktreeState;
-    [ObservableProperty] private string? _worktreePath;
-    [ObservableProperty] private DateTime? _scheduledFor;
-    [ObservableProperty] private int _diffAdditions;
-    [ObservableProperty] private int _diffDeletions;
-    [ObservableProperty] private bool _dropHintAbove;
-    [ObservableProperty] private bool _dropHintBelow;
-    [ObservableProperty] private string? _parentTaskId;
-    [ObservableProperty] private string? _createdBy;
-    [ObservableProperty] private string? _blockedByTaskId;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsParked))]
+    [NotifyPropertyChangedFor(nameof(StatusLabel))]
+    private ClaudeDo.Data.Models.WorktreeState? _worktreeState;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(CanOpenWorktree))]
+    [NotifyPropertyChangedFor(nameof(OpenWorktreeDisabledReason))]
+    private string? _worktreePath;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsOverdue))]
+    [NotifyPropertyChangedFor(nameof(HasSchedule))]
+    private DateTime? _scheduledFor;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(HasDiff))]
+    [NotifyPropertyChangedFor(nameof(DiffAdditionsText))]
+    private int _diffAdditions;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(HasDiff))]
+    [NotifyPropertyChangedFor(nameof(DiffDeletionsText))]
+    private int _diffDeletions;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsDropTarget))]
+    private bool _dropHintAbove;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsDropTarget))]
+    private bool _dropHintBelow;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsChild))]
+    [NotifyPropertyChangedFor(nameof(IsAgentSuggested))]
+    [NotifyPropertyChangedFor(nameof(ShowAsChild))]
+    [NotifyPropertyChangedFor(nameof(IsDraft))]
+    [NotifyPropertyChangedFor(nameof(IsPlanned))]
+    [NotifyPropertyChangedFor(nameof(CanSendToQueue))]
+    [NotifyPropertyChangedFor(nameof(CanOpenPlanningSession))]
+    [NotifyPropertyChangedFor(nameof(SendToQueueDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(PlanningDisabledReason))]
+    private string? _parentTaskId;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsAgentSuggested))]
+    private string? _createdBy;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsQueued))]
+    [NotifyPropertyChangedFor(nameof(IsWaiting))]
+    [NotifyPropertyChangedFor(nameof(StatusChipClass))]
+    private string? _blockedByTaskId;
     [ObservableProperty] private string? _dependsOnTaskId;
     [ObservableProperty] private bool _isExpanded = true;
-    [ObservableProperty] private bool _hasPlanningChildren;
-    [ObservableProperty] private bool _hasQueuedSubtasks;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsPlanningParent))]
+    [NotifyPropertyChangedFor(nameof(CanQueuePlan))]
+    private bool _hasPlanningChildren;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(CanRemoveFromQueue))]
+    [NotifyPropertyChangedFor(nameof(CanSendToQueue))]
+    [NotifyPropertyChangedFor(nameof(CanQueuePlan))]
+    [NotifyPropertyChangedFor(nameof(SendToQueueDisabledReason))]
+    private bool _hasQueuedSubtasks;
     [ObservableProperty] private bool _showListChip = true;
-    [ObservableProperty] private bool _parentFinalized;
-    [ObservableProperty] private bool _parentInView = true;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsDraft))]
+    [NotifyPropertyChangedFor(nameof(IsPlanned))]
+    [NotifyPropertyChangedFor(nameof(CanSendToQueue))]
+    [NotifyPropertyChangedFor(nameof(SendToQueueDisabledReason))]
+    private bool _parentFinalized;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowAsChild))]
+    [NotifyPropertyChangedFor(nameof(IsDraft))]
+    [NotifyPropertyChangedFor(nameof(IsPlanned))]
+    private bool _parentInView = true;
     // The three below are extrinsic — computed and assigned by TasksIslandViewModel.Regroup
     // (it alone has the cross-row graph needed to walk DependsOnTaskId chains), mirroring how
     // ParentInView is assigned by the same pass rather than derived locally.
     [ObservableProperty] private bool _showAsChainMember;
     [ObservableProperty] private int? _chainStep;
     [ObservableProperty] private string? _chainAfterLabel;
-    [ObservableProperty] private int _roadblockCount;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(HasRoadblock))]
+    [NotifyPropertyChangedFor(nameof(RoadblockTooltip))]
+    private int _roadblockCount;
     // Only meaningful when Status=Failed; stamped by TaskRunner.MarkFailed. "unknown" for a
     // Failed task that predates this field. Null on every other status.
-    [ObservableProperty] private string? _failureReason;
-    [ObservableProperty] private int? _failureTurnsUsed;
-    [ObservableProperty] private int? _failureMaxTurns;
-    [ObservableProperty] private bool _isRefining;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(HasFailureReason))]
+    [NotifyPropertyChangedFor(nameof(FailureReasonLabel))]
+    [NotifyPropertyChangedFor(nameof(FailureReasonTooltip))]
+    [NotifyPropertyChangedFor(nameof(StatusChipTooltip))]
+    private string? _failureReason;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(FailureReasonTooltip))]
+    private int? _failureTurnsUsed;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(FailureReasonTooltip))]
+    private int? _failureMaxTurns;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(CanRefine))]
+    [NotifyPropertyChangedFor(nameof(RefineDisabledReason))]
+    private bool _isRefining;
     // Manual = a reminder only the user can do. Every "hand this to Claude" affordance is hidden
     // and automation skips it; opening a hand-driven ConPTY session stays allowed.
-    [ObservableProperty] private bool _isManual;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ManualBadge))]
+    [NotifyPropertyChangedFor(nameof(CanRefine))]
+    [NotifyPropertyChangedFor(nameof(CanSendToQueue))]
+    [NotifyPropertyChangedFor(nameof(CanOpenPlanningSession))]
+    [NotifyPropertyChangedFor(nameof(SendToQueueDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(RefineDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(PlanningDisabledReason))]
+    private bool _isManual;
     // Set by the shell from Mission Control's open ConPTY panes: this task has a live hand-driven
     // session, which outranks the persisted status on the lifecycle chip (an interactive task is
     // typically Idle+Active-worktree, i.e. would otherwise read "Parked").
-    [ObservableProperty] private bool _hasInteractiveSession;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsParked))]
+    [NotifyPropertyChangedFor(nameof(StatusChipClass))]
+    [NotifyPropertyChangedFor(nameof(StatusLabel))]
+    [NotifyPropertyChangedFor(nameof(ShowStatusChip))]
+    [NotifyPropertyChangedFor(nameof(StatusChipTooltip))]
+    [NotifyPropertyChangedFor(nameof(CanSendToQueue))]
+    [NotifyPropertyChangedFor(nameof(SendToQueueDisabledReason))]
+    [NotifyPropertyChangedFor(nameof(CanDeleteTask))]
+    [NotifyPropertyChangedFor(nameof(DeleteDisabledReason))]
+    private bool _hasInteractiveSession;
     // Set by the custom drag while this row is being dragged — drives the "grabbed" row style.
     [ObservableProperty] private bool _isDragging;
 
     // Set from PointerEntered/PointerExited in TaskRowView.axaml.cs. Drives ShowRowActions
     // together with IsSelected, so hover-only affordances (refine button, unset star, dequeue-X)
     // stay reachable via keyboard/selection, not just mouse hover.
-    [ObservableProperty] private bool _isHovered;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowRowActions))]
+    private bool _isHovered;
 
     // Transient: set from HubBroadcaster's OperationProgress while the worker is still creating
     // this task's worktree (the silent gap between Queued and the first agent output). Cleared
     // by the next entity refresh — UpdateFromEntity always reflects a settled state, so there's
     // nothing left to show past that point.
-    [ObservableProperty] private string? _creationPhase;
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(HasCreationPhase))]
+    [NotifyPropertyChangedFor(nameof(CreationPhaseLabel))]
+    private string? _creationPhase;
 
     // True while a drag is hovering this row (i.e. it would show a drop-hint gap). Used to
     // suppress the ordinary hover highlight/transitions so they don't fight the hint.
@@ -309,179 +448,6 @@ public sealed partial class TaskRowViewModel : ViewModelBase
         _                                => "idle",
     };
 
-    partial void OnStatusChanged(TaskStatus value)
-    {
-        OnPropertyChanged(nameof(StatusChipClass));
-        OnPropertyChanged(nameof(StatusLabel));
-        OnPropertyChanged(nameof(ShowStatusChip));
-        OnPropertyChanged(nameof(IsRunning));
-        OnPropertyChanged(nameof(IsWaitingForReview));
-        OnPropertyChanged(nameof(IsParked));
-        OnPropertyChanged(nameof(IsQueued));
-        OnPropertyChanged(nameof(IsWaiting));
-        OnPropertyChanged(nameof(HasFailureReason));
-        OnPropertyChanged(nameof(FailureReasonTooltip));
-        OnPropertyChanged(nameof(StatusChipTooltip));
-        OnPropertyChanged(nameof(IsDraft));
-        OnPropertyChanged(nameof(IsPlanned));
-        OnPropertyChanged(nameof(CanOpenPlanningSession));
-        OnPropertyChanged(nameof(CanRemoveFromQueue));
-        OnPropertyChanged(nameof(CanSendToQueue));
-        OnPropertyChanged(nameof(CanRefine));
-        OnPropertyChanged(nameof(SendToQueueDisabledReason));
-        OnPropertyChanged(nameof(CancelDisabledReason));
-        OnPropertyChanged(nameof(RefineDisabledReason));
-        OnPropertyChanged(nameof(PlanningDisabledReason));
-        OnPropertyChanged(nameof(MarkAsDisabledReason));
-    }
-
-    partial void OnParentTaskIdChanged(string? value)
-    {
-        OnPropertyChanged(nameof(IsChild));
-        OnPropertyChanged(nameof(IsAgentSuggested));
-        OnPropertyChanged(nameof(ShowAsChild));
-        OnPropertyChanged(nameof(IsDraft));
-        OnPropertyChanged(nameof(IsPlanned));
-        OnPropertyChanged(nameof(CanSendToQueue));
-        OnPropertyChanged(nameof(CanOpenPlanningSession));
-        OnPropertyChanged(nameof(SendToQueueDisabledReason));
-        OnPropertyChanged(nameof(PlanningDisabledReason));
-    }
-
-    partial void OnParentInViewChanged(bool value)
-    {
-        OnPropertyChanged(nameof(ShowAsChild));
-        OnPropertyChanged(nameof(IsDraft));
-        OnPropertyChanged(nameof(IsPlanned));
-    }
-
-    partial void OnCreatedByChanged(string? value) => OnPropertyChanged(nameof(IsAgentSuggested));
-
-    partial void OnParentFinalizedChanged(bool value)
-    {
-        OnPropertyChanged(nameof(IsDraft));
-        OnPropertyChanged(nameof(IsPlanned));
-        OnPropertyChanged(nameof(CanSendToQueue));
-        OnPropertyChanged(nameof(SendToQueueDisabledReason));
-    }
-
-    partial void OnPlanningPhaseChanged(PlanningPhase value)
-    {
-        OnPropertyChanged(nameof(IsPlanningParent));
-        OnPropertyChanged(nameof(PlanningBadge));
-        OnPropertyChanged(nameof(ShowStatusChip));
-        OnPropertyChanged(nameof(IsPlanActive));
-        OnPropertyChanged(nameof(IsPlanFinalized));
-        OnPropertyChanged(nameof(CanOpenPlanningSession));
-        OnPropertyChanged(nameof(CanResumeOrDiscardPlanning));
-        OnPropertyChanged(nameof(CanQueuePlan));
-        OnPropertyChanged(nameof(CanSendToQueue));
-        OnPropertyChanged(nameof(CanFinalizePlanning));
-        OnPropertyChanged(nameof(CanRefine));
-        OnPropertyChanged(nameof(SendToQueueDisabledReason));
-        OnPropertyChanged(nameof(RefineDisabledReason));
-        OnPropertyChanged(nameof(PlanningDisabledReason));
-    }
-
-    partial void OnIsRefiningChanged(bool value)
-    {
-        OnPropertyChanged(nameof(CanRefine));
-        OnPropertyChanged(nameof(RefineDisabledReason));
-    }
-
-    partial void OnIsManualChanged(bool value)
-    {
-        OnPropertyChanged(nameof(ManualBadge));
-        OnPropertyChanged(nameof(CanRefine));
-        OnPropertyChanged(nameof(CanSendToQueue));
-        OnPropertyChanged(nameof(CanOpenPlanningSession));
-        OnPropertyChanged(nameof(SendToQueueDisabledReason));
-        OnPropertyChanged(nameof(RefineDisabledReason));
-        OnPropertyChanged(nameof(PlanningDisabledReason));
-    }
-
-    partial void OnHasInteractiveSessionChanged(bool value)
-    {
-        OnPropertyChanged(nameof(IsParked));
-        OnPropertyChanged(nameof(StatusChipClass));
-        OnPropertyChanged(nameof(StatusLabel));
-        OnPropertyChanged(nameof(ShowStatusChip));
-        OnPropertyChanged(nameof(StatusChipTooltip));
-        OnPropertyChanged(nameof(CanSendToQueue));
-        OnPropertyChanged(nameof(SendToQueueDisabledReason));
-        OnPropertyChanged(nameof(CanDeleteTask));
-        OnPropertyChanged(nameof(DeleteDisabledReason));
-    }
-
-    partial void OnFailureReasonChanged(string? value)
-    {
-        OnPropertyChanged(nameof(HasFailureReason));
-        OnPropertyChanged(nameof(FailureReasonLabel));
-        OnPropertyChanged(nameof(FailureReasonTooltip));
-        OnPropertyChanged(nameof(StatusChipTooltip));
-    }
-
-    partial void OnFailureTurnsUsedChanged(int? value) => OnPropertyChanged(nameof(FailureReasonTooltip));
-    partial void OnFailureMaxTurnsChanged(int? value) => OnPropertyChanged(nameof(FailureReasonTooltip));
-
-    partial void OnHasQueuedSubtasksChanged(bool value)
-    {
-        OnPropertyChanged(nameof(CanRemoveFromQueue));
-        OnPropertyChanged(nameof(CanSendToQueue));
-        OnPropertyChanged(nameof(CanQueuePlan));
-        OnPropertyChanged(nameof(SendToQueueDisabledReason));
-    }
-
-    partial void OnIsHoveredChanged(bool value) => OnPropertyChanged(nameof(ShowRowActions));
-    partial void OnIsSelectedChanged(bool value) => OnPropertyChanged(nameof(ShowRowActions));
-
-    partial void OnBlockedByTaskIdChanged(string? value)
-    {
-        OnPropertyChanged(nameof(IsQueued));
-        OnPropertyChanged(nameof(IsWaiting));
-        OnPropertyChanged(nameof(StatusChipClass));
-    }
-
-    partial void OnHasPlanningChildrenChanged(bool value)
-    {
-        OnPropertyChanged(nameof(IsPlanningParent));
-        OnPropertyChanged(nameof(CanQueuePlan));
-    }
-
-    partial void OnNumberChanged(int value)        => OnPropertyChanged(nameof(ShowNumberBadge));
-    partial void OnBranchChanged(string? value)    => OnPropertyChanged(nameof(HasBranch));
-    partial void OnWorktreePathChanged(string? value)
-    {
-        OnPropertyChanged(nameof(CanOpenWorktree));
-        OnPropertyChanged(nameof(OpenWorktreeDisabledReason));
-    }
-    partial void OnWorktreeStateChanged(ClaudeDo.Data.Models.WorktreeState? value)
-    {
-        OnPropertyChanged(nameof(IsParked));
-        OnPropertyChanged(nameof(StatusLabel));
-    }
-    partial void OnDoneChanged(bool value)
-    {
-        OnPropertyChanged(nameof(IsOverdue));
-        OnPropertyChanged(nameof(CanAddToMyDay));
-    }
-    partial void OnIsMyDayChanged(bool value)      => OnPropertyChanged(nameof(CanAddToMyDay));
-    partial void OnScheduledForChanged(DateTime? value)
-    {
-        OnPropertyChanged(nameof(IsOverdue));
-        OnPropertyChanged(nameof(HasSchedule));
-    }
-    partial void OnDiffAdditionsChanged(int value) { OnPropertyChanged(nameof(HasDiff)); OnPropertyChanged(nameof(DiffAdditionsText)); }
-    partial void OnDiffDeletionsChanged(int value) { OnPropertyChanged(nameof(HasDiff)); OnPropertyChanged(nameof(DiffDeletionsText)); }
-    partial void OnRoadblockCountChanged(int value) { OnPropertyChanged(nameof(HasRoadblock)); OnPropertyChanged(nameof(RoadblockTooltip)); }
-    partial void OnDropHintAboveChanged(bool value) => OnPropertyChanged(nameof(IsDropTarget));
-    partial void OnDropHintBelowChanged(bool value) => OnPropertyChanged(nameof(IsDropTarget));
-    partial void OnCreationPhaseChanged(string? value)
-    {
-        OnPropertyChanged(nameof(HasCreationPhase));
-        OnPropertyChanged(nameof(CreationPhaseLabel));
-    }
-
     public void RefreshLocalized()
     {
         OnPropertyChanged(nameof(StatusLabel));
diff --git a/tests/ClaudeDo.Worker.Tests/UiVm/TaskRowViewModelNotificationsTests.cs b/tests/ClaudeDo.Worker.Tests/UiVm/TaskRowViewModelNotificationsTests.cs
new file mode 100644
index 00000000..d8fe1112
--- /dev/null
+++ b/tests/ClaudeDo.Worker.Tests/UiVm/TaskRowViewModelNotificationsTests.cs
@@ -0,0 +1,463 @@
+using System.Collections.Generic;
+using ClaudeDo.Data.Models;
+using ClaudeDo.Ui.ViewModels.Islands;
+using Xunit;
+using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
+
+namespace ClaudeDo.Worker.Tests.UiVm;
+
+// Characterization test for TaskRowViewModel's PropertyChanged fan-out. For every source
+// property that today drives dependent notifications (via a handwritten partial OnXChanged),
+// this pins down the exact SET of names raised when that property changes. Order is
+// deliberately not asserted: a NotifyPropertyChangedFor-based rewrite raises the source
+// property's own notification before its dependents instead of after, which is an unobservable
+// reordering, not a behavior change. This test must stay green across that rewrite.
+public class TaskRowViewModelNotificationsTests
+{
+    private static HashSet<string?> Raised(TaskRowViewModel vm, System.Action mutate)
+    {
+        var raised = new HashSet<string?>();
+        vm.PropertyChanged += (_, e) => raised.Add(e.PropertyName);
+        mutate();
+        return raised;
+    }
+
+    [Fact]
+    public void StatusChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.Status = TaskStatus.Running);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.Status),
+            nameof(TaskRowViewModel.StatusChipClass),
+            nameof(TaskRowViewModel.StatusLabel),
+            nameof(TaskRowViewModel.ShowStatusChip),
+            nameof(TaskRowViewModel.IsRunning),
+            nameof(TaskRowViewModel.IsWaitingForReview),
+            nameof(TaskRowViewModel.IsParked),
+            nameof(TaskRowViewModel.IsQueued),
+            nameof(TaskRowViewModel.IsWaiting),
+            nameof(TaskRowViewModel.HasFailureReason),
+            nameof(TaskRowViewModel.FailureReasonTooltip),
+            nameof(TaskRowViewModel.StatusChipTooltip),
+            nameof(TaskRowViewModel.IsDraft),
+            nameof(TaskRowViewModel.IsPlanned),
+            nameof(TaskRowViewModel.CanOpenPlanningSession),
+            nameof(TaskRowViewModel.CanRemoveFromQueue),
+            nameof(TaskRowViewModel.CanSendToQueue),
+            nameof(TaskRowViewModel.CanRefine),
+            nameof(TaskRowViewModel.SendToQueueDisabledReason),
+            nameof(TaskRowViewModel.CancelDisabledReason),
+            nameof(TaskRowViewModel.RefineDisabledReason),
+            nameof(TaskRowViewModel.PlanningDisabledReason),
+            nameof(TaskRowViewModel.MarkAsDisabledReason),
+        }, raised);
+    }
+
+    [Fact]
+    public void ParentTaskIdChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.ParentTaskId = "parent");
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.ParentTaskId),
+            nameof(TaskRowViewModel.IsChild),
+            nameof(TaskRowViewModel.IsAgentSuggested),
+            nameof(TaskRowViewModel.ShowAsChild),
+            nameof(TaskRowViewModel.IsDraft),
+            nameof(TaskRowViewModel.IsPlanned),
+            nameof(TaskRowViewModel.CanSendToQueue),
+            nameof(TaskRowViewModel.CanOpenPlanningSession),
+            nameof(TaskRowViewModel.SendToQueueDisabledReason),
+            nameof(TaskRowViewModel.PlanningDisabledReason),
+        }, raised);
+    }
+
+    [Fact]
+    public void ParentInViewChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.ParentInView = false);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.ParentInView),
+            nameof(TaskRowViewModel.ShowAsChild),
+            nameof(TaskRowViewModel.IsDraft),
+            nameof(TaskRowViewModel.IsPlanned),
+        }, raised);
+    }
+
+    [Fact]
+    public void CreatedByChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.CreatedBy = "someone");
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.CreatedBy),
+            nameof(TaskRowViewModel.IsAgentSuggested),
+        }, raised);
+    }
+
+    [Fact]
+    public void ParentFinalizedChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.ParentFinalized = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.ParentFinalized),
+            nameof(TaskRowViewModel.IsDraft),
+            nameof(TaskRowViewModel.IsPlanned),
+            nameof(TaskRowViewModel.CanSendToQueue),
+            nameof(TaskRowViewModel.SendToQueueDisabledReason),
+        }, raised);
+    }
+
+    [Fact]
+    public void PlanningPhaseChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.PlanningPhase = PlanningPhase.Active);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.PlanningPhase),
+            nameof(TaskRowViewModel.IsPlanningParent),
+            nameof(TaskRowViewModel.PlanningBadge),
+            nameof(TaskRowViewModel.ShowStatusChip),
+            nameof(TaskRowViewModel.IsPlanActive),
+            nameof(TaskRowViewModel.IsPlanFinalized),
+            nameof(TaskRowViewModel.CanOpenPlanningSession),
+            nameof(TaskRowViewModel.CanResumeOrDiscardPlanning),
+            nameof(TaskRowViewModel.CanQueuePlan),
+            nameof(TaskRowViewModel.CanSendToQueue),
+            nameof(TaskRowViewModel.CanFinalizePlanning),
+            nameof(TaskRowViewModel.CanRefine),
+            nameof(TaskRowViewModel.SendToQueueDisabledReason),
+            nameof(TaskRowViewModel.RefineDisabledReason),
+            nameof(TaskRowViewModel.PlanningDisabledReason),
+        }, raised);
+    }
+
+    [Fact]
+    public void IsRefiningChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.IsRefining = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.IsRefining),
+            nameof(TaskRowViewModel.CanRefine),
+            nameof(TaskRowViewModel.RefineDisabledReason),
+        }, raised);
+    }
+
+    [Fact]
+    public void IsManualChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.IsManual = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.IsManual),
+            nameof(TaskRowViewModel.ManualBadge),
+            nameof(TaskRowViewModel.CanRefine),
+            nameof(TaskRowViewModel.CanSendToQueue),
+            nameof(TaskRowViewModel.CanOpenPlanningSession),
+            nameof(TaskRowViewModel.SendToQueueDisabledReason),
+            nameof(TaskRowViewModel.RefineDisabledReason),
+            nameof(TaskRowViewModel.PlanningDisabledReason),
+        }, raised);
+    }
+
+    [Fact]
+    public void HasInteractiveSessionChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.HasInteractiveSession = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.HasInteractiveSession),
+            nameof(TaskRowViewModel.IsParked),
+            nameof(TaskRowViewModel.StatusChipClass),
+            nameof(TaskRowViewModel.StatusLabel),
+            nameof(TaskRowViewModel.ShowStatusChip),
+            nameof(TaskRowViewModel.StatusChipTooltip),
+            nameof(TaskRowViewModel.CanSendToQueue),
+            nameof(TaskRowViewModel.SendToQueueDisabledReason),
+            nameof(TaskRowViewModel.CanDeleteTask),
+            nameof(TaskRowViewModel.DeleteDisabledReason),
+        }, raised);
+    }
+
+    [Fact]
+    public void FailureReasonChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.FailureReason = "error");
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.FailureReason),
+            nameof(TaskRowViewModel.HasFailureReason),
+            nameof(TaskRowViewModel.FailureReasonLabel),
+            nameof(TaskRowViewModel.FailureReasonTooltip),
+            nameof(TaskRowViewModel.StatusChipTooltip),
+        }, raised);
+    }
+
+    [Fact]
+    public void FailureTurnsUsedChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.FailureTurnsUsed = 5);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.FailureTurnsUsed),
+            nameof(TaskRowViewModel.FailureReasonTooltip),
+        }, raised);
+    }
+
+    [Fact]
+    public void FailureMaxTurnsChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.FailureMaxTurns = 10);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.FailureMaxTurns),
+            nameof(TaskRowViewModel.FailureReasonTooltip),
+        }, raised);
+    }
+
+    [Fact]
+    public void HasQueuedSubtasksChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.HasQueuedSubtasks = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.HasQueuedSubtasks),
+            nameof(TaskRowViewModel.CanRemoveFromQueue),
+            nameof(TaskRowViewModel.CanSendToQueue),
+            nameof(TaskRowViewModel.CanQueuePlan),
+            nameof(TaskRowViewModel.SendToQueueDisabledReason),
+        }, raised);
+    }
+
+    [Fact]
+    public void IsHoveredChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.IsHovered = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.IsHovered),
+            nameof(TaskRowViewModel.ShowRowActions),
+        }, raised);
+    }
+
+    [Fact]
+    public void IsSelectedChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.IsSelected = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.IsSelected),
+            nameof(TaskRowViewModel.ShowRowActions),
+        }, raised);
+    }
+
+    [Fact]
+    public void BlockedByTaskIdChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.BlockedByTaskId = "blocker");
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.BlockedByTaskId),
+            nameof(TaskRowViewModel.IsQueued),
+            nameof(TaskRowViewModel.IsWaiting),
+            nameof(TaskRowViewModel.StatusChipClass),
+        }, raised);
+    }
+
+    [Fact]
+    public void HasPlanningChildrenChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.HasPlanningChildren = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.HasPlanningChildren),
+            nameof(TaskRowViewModel.IsPlanningParent),
+            nameof(TaskRowViewModel.CanQueuePlan),
+        }, raised);
+    }
+
+    [Fact]
+    public void NumberChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.Number = 5);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.Number),
+            nameof(TaskRowViewModel.ShowNumberBadge),
+        }, raised);
+    }
+
+    [Fact]
+    public void BranchChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.Branch = "main");
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.Branch),
+            nameof(TaskRowViewModel.HasBranch),
+        }, raised);
+    }
+
+    [Fact]
+    public void WorktreePathChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.WorktreePath = @"C:\repo\worktrees\t");
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.WorktreePath),
+            nameof(TaskRowViewModel.CanOpenWorktree),
+            nameof(TaskRowViewModel.OpenWorktreeDisabledReason),
+        }, raised);
+    }
+
+    [Fact]
+    public void WorktreeStateChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.WorktreeState = ClaudeDo.Data.Models.WorktreeState.Active);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.WorktreeState),
+            nameof(TaskRowViewModel.IsParked),
+            nameof(TaskRowViewModel.StatusLabel),
+        }, raised);
+    }
+
+    [Fact]
+    public void DoneChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.Done = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.Done),
+            nameof(TaskRowViewModel.IsOverdue),
+            nameof(TaskRowViewModel.CanAddToMyDay),
+        }, raised);
+    }
+
+    [Fact]
+    public void IsMyDayChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.IsMyDay = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.IsMyDay),
+            nameof(TaskRowViewModel.CanAddToMyDay),
+        }, raised);
+    }
+
+    [Fact]
+    public void ScheduledForChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.ScheduledFor = DateTime.UtcNow);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.ScheduledFor),
+            nameof(TaskRowViewModel.IsOverdue),
+            nameof(TaskRowViewModel.HasSchedule),
+        }, raised);
+    }
+
+    [Fact]
+    public void DiffAdditionsChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.DiffAdditions = 5);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.DiffAdditions),
+            nameof(TaskRowViewModel.HasDiff),
+            nameof(TaskRowViewModel.DiffAdditionsText),
+        }, raised);
+    }
+
+    [Fact]
+    public void DiffDeletionsChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.DiffDeletions = 5);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.DiffDeletions),
+            nameof(TaskRowViewModel.HasDiff),
+            nameof(TaskRowViewModel.DiffDeletionsText),
+        }, raised);
+    }
+
+    [Fact]
+    public void RoadblockCountChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.RoadblockCount = 3);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.RoadblockCount),
+            nameof(TaskRowViewModel.HasRoadblock),
+            nameof(TaskRowViewModel.RoadblockTooltip),
+        }, raised);
+    }
+
+    [Fact]
+    public void DropHintAboveChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.DropHintAbove = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.DropHintAbove),
+            nameof(TaskRowViewModel.IsDropTarget),
+        }, raised);
+    }
+
+    [Fact]
+    public void DropHintBelowChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.DropHintBelow = true);
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.DropHintBelow),
+            nameof(TaskRowViewModel.IsDropTarget),
+        }, raised);
+    }
+
+    [Fact]
+    public void CreationPhaseChanged_Notifies_Dependents()
+    {
+        var vm = new TaskRowViewModel { Id = "t" };
+        var raised = Raised(vm, () => vm.CreationPhase = "creating_worktree");
+        Assert.Equal(new HashSet<string?>
+        {
+            nameof(TaskRowViewModel.CreationPhase),
+            nameof(TaskRowViewModel.HasCreationPhase),
+            nameof(TaskRowViewModel.CreationPhaseLabel),
+        }, raised);
+    }
+}