# Backend Design: ECR-031 CrisisEvent

| ID | BD-2026-031 |
| Status | Approved |
| Coding | Loop authorized |
| Level | L2 |
| Migration | YES 000032 |

## Backend Change Boundary

```text
Domain: CrisisEvent (read)
App: AdminHandler → admin.Service → AdminRepo
API: GET /admin/crisis/events; GET /admin/crisis/events/{id}
Permission: admin.crisis.read
Migration: 000032
```

## Out of boundary

事件写入工单流 · 医疗诊断 · UGC · 真支付

Rollback: down migration + remove routes/UI