feat(data): TaskRepository.SetPlanningStartedAsync

src/ClaudeDo.Data/Repositories/TaskRepository.cs

@@ -267,6 +267,21 @@ public sealed class TaskRepository
         return child;
     }
 
+    public async Task<TaskEntity?> SetPlanningStartedAsync(
+        string taskId,
+        string sessionToken,
+        CancellationToken ct = default)
+    {
+        var affected = await _context.Tasks
+            .Where(t => t.Id == taskId && t.Status == TaskStatus.Manual)
+            .ExecuteUpdateAsync(s => s
+                .SetProperty(t => t.Status, TaskStatus.Planning)
+                .SetProperty(t => t.PlanningSessionToken, sessionToken), ct);
+
+        if (affected == 0) return null;
+        return await _context.Tasks.AsNoTracking().FirstOrDefaultAsync(t => t.Id == taskId, ct);
+    }
+
     #endregion
 
     #region Queue selection