# Feature Spec: OpsCMS · Banner（Ops · ECR-024）

> Status: `Active`（Loop continuous · **ECR-024 Closed**）  
> Parent: WAVE0-FROZEN · Predecessor: ECR-023 Closed  
> Capability: `OpsCMS` · BC: `Ops_CMS_NoUGC`  
> 授权：`docs/WAVE0/LOOP_AUTHORIZATION.md`

## Non-goals

Banner 写发布 · FeedSlot · ScheduledPublication · UGC · 真支付

## L2 Domain

| 概念 | 语义 |
|------|------|
| `Banner` | code 唯一；placement ∈ {home,explore,ask}；active/system；本切片只读 |

## L3 API

| Method | Path | 权限 | 语义 |
|--------|------|------|------|
| GET | `/admin/cms/banners` | `admin.cms.read` | 只读 |
| GET | `/admin/cms/banners/{id}` | `admin.cms.read` | 只读 |

## Migration

`000025`：表 + 种子（若有） + 授予 admin.cms.read

## L4 AC

| ID | Then |
|----|------|
| AC-F-01 | list 含种子或空列表合法 |
| AC-F-02 | 已知 id get 200 |
| AC-F-03 | 未知 id → 404 |
| AC-S-01 | 无 Admin → 401 |
| AC-S-02 | 无权限 → 403 |
| AC-P-01 | list < 500ms |
| AC-O-01 | N/A 只读 |

contract_diff: `docs/CONTRACT_DIFF/ECR-024.yaml`