# Backend Design: ECR-036 RhythmConfig

| ID | BD-2026-036 |
| Status | Approved |
| Coding | Loop authorized |
| Level | L2 |
| Migration | YES 000037 |

## Backend Change Boundary

```text
Domain: RhythmConfig (read)
App: AdminHandler → admin.Service → AdminRepo
API: GET /admin/explore/rhythm-configs; GET /admin/explore/rhythm-configs/{id}
Permission: admin.explore.read
Migration: 000037
```

## Out of boundary

配置写发布 · UGC · 真支付

Rollback: down migration + remove routes/UI