feat(worker): register planning services and add Merge-all hub methods

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

src/ClaudeDo.Worker/Program.cs

@@ -36,6 +36,8 @@ builder.Services.AddSingleton<TaskRunner>();
 builder.Services.AddSingleton<WorktreeMaintenanceService>();
 builder.Services.AddSingleton<TaskResetService>();
 builder.Services.AddSingleton<TaskMergeService>();
+builder.Services.AddSingleton<PlanningAggregator>();
+builder.Services.AddSingleton<PlanningMergeOrchestrator>();
 
 // Agent file management.
 var agentsDir = Path.Combine(ClaudeDo.Data.Paths.AppDataRoot(), "agents");