{
  "kind": "synthetic_teaching",
  "cutover_point": "T",
  "preconditions": [
    "隔离测试环境",
    "旧系统新写入已冻结",
    "旧发送队列停止确认",
    "新系统不自动执行导入记录"
  ],
  "tasks": [
    {
      "task_id": "T01",
      "version": 1,
      "at_T": "ready_without_approval",
      "export": [
        "输入",
        "版本1",
        "无批准标记"
      ],
      "import_effect": "不产生授权",
      "next": "业务负责人审批",
      "stop_if": "找不到有权批准的人"
    },
    {
      "task_id": "T02",
      "version": 5,
      "at_T": "approved_not_executed",
      "action_id": "A02",
      "approval": {
        "id": "APP02",
        "task_version": 5,
        "approver": "教学业务负责人",
        "scope": "指定任务与执行对象"
      },
      "export": [
        "版本5内容",
        "批准对象与范围",
        "动作号A02",
        "旧队列停止确认"
      ],
      "next": "负责人核对批准仍适用于新环境后接续",
      "teaching_decision": "核对通过，允许接续；不是已实际执行的证据",
      "stop_if": "任务、权限、对象变化或旧队列未停止；重新审批"
    },
    {
      "task_id": "T03",
      "version": 2,
      "at_T": "sent_receipt_unknown",
      "action_id": "A03",
      "export": [
        "动作号",
        "外部服务标识",
        "最后发送记录"
      ],
      "lookup": {
        "key": "A03",
        "teaching_result": "executed",
        "external_receipt": "E03"
      },
      "next": "关联E03并记完成；不得再次执行",
      "if_not_confirmed": "待核并升级，不按新动作重发"
    }
  ],
  "overall_cutover": "blocked_by_component_L_and_new_runtime",
  "success_scope": "仅证明本题三项记录的解释和下一动作；没有宣布真实迁移完成"
}