feat(ECR-040): ExploreConfig ScaleDefinition 只读投影并 Closed

复用 scales 表只读投影；admin-h5 /catalogs 聚合 026–040 目录；Loop 队列 STOP。

Co-authored-by: Cursor <cursoragent@cursor.com>

.ai/product/feature-spec/README.md

@@ -49,6 +49,7 @@
 | [ops-image-card-deck.md](ops-image-card-deck.md) | ExploreConfig ImageCardDeck | §7 | `GET /admin/explore/image-card-decks*` | Ops-D · **ECR-037 Closed** |
 | [ops-report-template.md](ops-report-template.md) | GrowthInsights ReportTemplate | §7 | `GET /admin/growth/report-templates*` | Ops-D · **ECR-038 Closed** |
 | [ops-funnel-definition.md](ops-funnel-definition.md) | GrowthInsights FunnelDefinition | §7 | `GET /admin/analytics/funnel-definitions*` | Ops-D · **ECR-039 Closed** |
+| [ops-scale-definition.md](ops-scale-definition.md) | ExploreConfig ScaleDefinition | §7 | `GET /admin/explore/scales*` | Ops-D · **ECR-040 Closed** |
 
 新功能：复制 `_TEMPLATE.md` → 填满 → 在本表登记 → 再编码。
 

.ai/product/feature-spec/ops-scale-definition.md

@@ -0,0 +1,41 @@
+# Feature Spec: ExploreConfig · ScaleDefinition（Ops · ECR-040）
+
+> Status: `Active`（Loop continuous · **ECR-040 Closed**）  
+> Parent: WAVE0-FROZEN · Predecessor: ECR-039 Closed  
+> Capability: `ExploreConfig` · BC: `Explore_Reports`  
+> 授权：`docs/WAVE0/LOOP_AUTHORIZATION.md`
+
+## Non-goals
+
+PATCH status（已有 content.write）· 题干编辑 · UGC · 真支付
+
+## L2 Domain
+
+| 概念 | 语义 |
+|------|------|
+| `ScaleDefinition` | 本切片只读目录；code 唯一（若适用） |
+
+## L3 API
+
+| Method | Path | 权限 | 语义 |
+|--------|------|------|------|
+| GET | `/admin/explore/scales` | `admin.explore.read` | 只读 |
+| GET | `/admin/explore/scales/{id}` | `admin.explore.read` | 只读 |
+
+## Migration
+
+Migration NO：复用 `scales` 表只读投影
+
+## 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-040.yaml`