```json
{
"summary

```json
{
"summary": "小区团购业务全流程逻辑",
"widget": {
"type": "mermaid",
"config": {
"theme": "default",
"look": "classic",
"layout": "elk"
},
"code": "graph TD\n A[商家发布团购] --> B(设置团购信息)\n B --> C{截止日期/满额判断}\n C -->|未截止| D[消费者可见]\n C -->|已截止| E[自动关闭]\n D --> F[距离≤3km可见]\n F --> G[微信小程序下单]\n G --> H{满足50元门槛}\n H -->|是| I[选择配送方式]\n I --> J[上门自提]\n I --> K[送货上门]\n K --> L{满100元?}\n L -->|是| M[免运费]\n L -->|否| N[计算运费]\n G --> O[优惠券抵扣]\n O --> P{单笔订单限用1张}\n P --> Q[支付成功]\n Q --> R[弹出分享窗口]\n Q --> S[生成订单]\n S --> T[订单管理]\n T --> U[未支付订单]\n T --> V[已完成订单]\n T --> W[待核销订单]\n U --> X[支付/删除]\n V --> Y[评价功能]\n W --> Z[展示核销二维码]\n Z --> AA[商家扫码核销]\n AA --> AB[公众号推送]\n C --> AC{数量判断}\n AC -->|达到总数| AD[显示已满]\n AC -->|≥最小数量| AE[拼团成功]\n AE --> AF[继续接单至截止]"
},
"next": [
"优化异常流程",
"补充状态机",
"细化距离计算",
"增加库存管理",
"完善退款逻辑"
]
}
```