# Backend Design: ECR-033 HandoffCase

| ID | BD-2026-033 |
| Status | Approved |
| Coding | Loop authorized |
| Level | L2 |
| Migration | YES 000034 |

## Backend Change Boundary

```text
Domain: HandoffCase (read)
App: AdminHandler → admin.Service → AdminRepo
API: GET /admin/ask/handoffs; GET /admin/ask/handoffs/{id}
Permission: admin.ask.read
Migration: 000034
```

## Out of boundary

转人工写流 · 顾问执业 · UGC · 真支付

Rollback: down migration + remove routes/UI