feat(ui): surface review actions and WaitingForReview status in task rows

Adds Approve/Reject/Park/Cancel buttons with a feedback flyout, a review
status chip, and a friendly status label for WaitingForReview tasks.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

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

@@ -602,6 +602,42 @@ public sealed partial class TasksIslandViewModel : ViewModelBase
         catch { /* worker offline; the broadcast will reconcile when it returns */ }
     }
 
+    // ── Review actions (visible when a task is WaitingForReview) ─────────────
+    // Each delegates to the worker hub, which performs the transition and
+    // broadcasts TaskUpdated; the row refreshes from that broadcast.
+
+    [RelayCommand]
+    private async Task ApproveReviewAsync(TaskRowViewModel? row)
+    {
+        if (row is null || !row.IsWaitingForReview || _worker is null) return;
+        try { await _worker.ApproveReviewAsync(row.Id); }
+        catch { /* offline; broadcast reconciles on return */ }
+    }
+
+    public async Task RejectReviewToQueueAsync(TaskRowViewModel row, string feedback)
+    {
+        if (!row.IsWaitingForReview || _worker is null) return;
+        if (string.IsNullOrWhiteSpace(feedback)) return;
+        try { await _worker.RejectReviewToQueueAsync(row.Id, feedback); }
+        catch { /* offline; broadcast reconciles on return */ }
+    }
+
+    [RelayCommand]
+    private async Task RejectReviewToIdleAsync(TaskRowViewModel? row)
+    {
+        if (row is null || !row.IsWaitingForReview || _worker is null) return;
+        try { await _worker.RejectReviewToIdleAsync(row.Id); }
+        catch { /* offline; broadcast reconciles on return */ }
+    }
+
+    [RelayCommand]
+    private async Task CancelReviewAsync(TaskRowViewModel? row)
+    {
+        if (row is null || !row.IsWaitingForReview || _worker is null) return;
+        try { await _worker.CancelReviewAsync(row.Id); }
+        catch { /* offline; broadcast reconciles on return */ }
+    }
+
     public async Task SetScheduledForAsync(TaskRowViewModel row, DateTime? when)
     {
         if (row is null) return;