# Backend Design: ECR-029 BlockPolicy

| ID | BD-2026-029 |
| Status | Approved |
| Coding | Loop authorized |
| Level | L2 |
| Migration | YES 000030 |

## Backend Change Boundary

```text
Domain: BlockPolicy (read)
App: AdminHandler → admin.Service → AdminRepo
API: GET /admin/content-safety/block-policies; GET /admin/content-safety/block-policies/{id}
Permission: admin.content_safety.read
Migration: 000030
```

## Out of boundary

策略写发布 · 用户侧硬拦截上线 · UGC · 真支付

Rollback: down migration + remove routes/UI