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>

proto/openapi.yaml

@@ -891,6 +891,34 @@ paths:
         '404':
           description: Not found
 
+  /api/v1/admin/explore/scales:
+    get:
+      tags: [admin]
+      summary: List ScaleDefinition read projection
+      description: Requires admin.explore.read · reuses scales table
+      responses:
+        '200':
+          description: OK
+        '401':
+          description: Unauthorized
+        '403':
+          description: Forbidden
+
+  /api/v1/admin/explore/scales/{id}:
+    get:
+      tags: [admin]
+      summary: Get ScaleDefinition
+      parameters:
+        - in: path
+          name: id
+          required: true
+          schema: { type: string, format: uuid }
+      responses:
+        '200':
+          description: OK
+        '404':
+          description: Not found
+
   /api/v1/admin/explore/star-configs:
     get:
       tags: [admin]