# Backend Design: ECR-037 ImageCardDeck

| ID | BD-2026-037 |
| Status | Approved |
| Coding | Loop authorized |
| Level | L2 |
| Migration | YES 000038 |

## Backend Change Boundary

```text
Domain: ImageCardDeck (read)
App: AdminHandler → admin.Service → AdminRepo
API: GET /admin/explore/image-card-decks; GET /admin/explore/image-card-decks/{id}
Permission: admin.explore.read
Migration: 000038
```

## Out of boundary

牌组写发布 · UGC · 真支付

Rollback: down migration + remove routes/UI