{
  "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
  "type": "AdaptiveCard",
  "version": "1.4",
  "body": [
    { "type": "TextBlock", "text": "__TITLE__", "weight": "Bolder", "size": "Medium", "wrap": true },
    { "type": "TextBlock", "text": "__SUMMARY__", "wrap": true },
    { "type": "TextBlock", "text": "__REQUEST_AND_TIMES__", "wrap": true, "spacing": "Medium" },
    {
      "type": "Input.ChoiceSet",
      "id": "assigneeKey",
      "label": "指派负责人（仅“指派任务”使用；批准使用默认负责人）",
      "style": "compact",
      "value": "self",
      "choices": [
        { "title": "默认负责人（实验中为自己）", "value": "self" },
        { "title": "备用负责人（实验白名单成员）", "value": "backup" }
      ]
    },
    {
      "type": "Input.Text",
      "id": "reviewComment",
      "label": "审核意见（打回时必须填写）",
      "isMultiline": true,
      "maxLength": 500,
      "placeholder": "填写意见；打回原因由流程再次校验"
    }
  ],
  "actions": [
    { "type": "Action.Submit", "title": "批准", "data": { "decision": "approve", "requestId": "__REQUEST_ID__" } },
    { "type": "Action.Submit", "title": "打回", "data": { "decision": "reject", "requestId": "__REQUEST_ID__" } },
    { "type": "Action.Submit", "title": "指派任务", "data": { "decision": "assign", "requestId": "__REQUEST_ID__" } }
  ]
}