Method completeTask

src/prompt/WorkflowManager.ts:411–422

* 完成任务

(id: string, actualTime?: number)

   * 完成任务
   */
  public completeTask(id: string, actualTime?: number): WorkflowTask {
    const updates: Partial<WorkflowTask> = {
      status: 'completed',
      completedAt: new Date(),
    };

    if (actualTime !== undefined) {
      updates.actualTime = actualTime;
    }

    return this.updateTask(id, updates);
  }

  /**
   * 阻塞任务