{
  "kind": "synthetic_teaching",
  "window_semantics": "开始卸货；不是卸完",
  "cost_scope": "每辆出车一次的教学固定成本，未计回程或司机工时；不是真实报价",
  "plans": [
    {
      "id": "P1",
      "assignment": "V2送O1",
      "decision": "reject",
      "reasons": [
        "120>100公斤",
        "需要2人但V2只有1人"
      ]
    },
    {
      "id": "P2",
      "assignment": "V1先O1后O2",
      "decision": "reject",
      "timeline": [
        "13:30两单均备好后离仓",
        "14:10开始卸O1",
        "14:30离开O1",
        "14:55到O2"
      ],
      "reasons": [
        "O2最晚14:05开始卸货"
      ]
    },
    {
      "id": "P3",
      "assignment": "V1先O2后O1",
      "decision": "choose_initial",
      "timeline": [
        "13:30离仓，两单已备好，总重200",
        "13:50到O2",
        "14:00离开O2",
        "14:25到O1"
      ],
      "cost": 80,
      "O1_slack_minutes": 5
    },
    {
      "id": "P4",
      "assignment": "V1送O1；V2送O2",
      "decision": "feasible_alternative",
      "timeline": [
        "V1 13:20离仓，14:00到O1",
        "V2 13:30离仓，13:50到O2"
      ],
      "cost": 130
    },
    {
      "id": "P5",
      "assignment": "延迟后仍V1合单",
      "decision": "reject_after_delay",
      "timeline": [
        "V1最早13:50离仓",
        "14:10到O2"
      ],
      "reasons": [
        "超过O2的14:05窗口"
      ]
    },
    {
      "id": "P6",
      "assignment": "延迟后分车",
      "decision": "choose_after_delay",
      "preconditions": [
        "13:35确认V1只能13:50出发",
        "两单尚未装车",
        "仓库已从V1清单解除O2再交给V2"
      ],
      "timeline": [
        "V2 13:40离仓，14:00到O2",
        "V1 13:50离仓，14:30到O1"
      ],
      "cost": 130,
      "O1_slack_minutes": 0,
      "next_action": "持续关注O1；如再晚先与客户重约，不自行改承诺"
    }
  ]
}