feat: add superadmin user library detail

backend/docs/swagger.yaml

@@ -1,5 +1,15 @@
 basePath: /
 definitions:
+  consts.ContentAccessStatus:
+    enum:
+    - active
+    - revoked
+    - expired
+    type: string
+    x-enum-varnames:
+    - ContentAccessStatusActive
+    - ContentAccessStatusRevoked
+    - ContentAccessStatusExpired
   consts.ContentStatus:
     enum:
     - draft
@@ -1778,6 +1788,54 @@ definitions:
         description: Value 券面值/折扣值。
         type: integer
     type: object
+  dto.SuperUserLibraryItem:
+    properties:
+      access_id:
+        description: AccessID 访问记录ID。
+        type: integer
+      access_status:
+        allOf:
+        - $ref: '#/definitions/consts.ContentAccessStatus'
+        description: AccessStatus 访问状态。
+      access_status_description:
+        description: AccessStatusDescription 访问状态描述（用于展示）。
+        type: string
+      accessed_at:
+        description: AccessedAt 获取访问权限时间（RFC3339）。
+        type: string
+      amount_paid:
+        description: AmountPaid 该内容实付金额（分）。
+        type: integer
+      content:
+        allOf:
+        - $ref: '#/definitions/dto.AdminContentItem'
+        description: Content 内容详情（含租户/作者/价格）。
+      content_id:
+        description: ContentID 内容ID。
+        type: integer
+      order_id:
+        description: OrderID 订单ID。
+        type: integer
+      order_status:
+        allOf:
+        - $ref: '#/definitions/consts.OrderStatus'
+        description: OrderStatus 订单状态。
+      order_status_description:
+        description: OrderStatusDescription 订单状态描述（用于展示）。
+        type: string
+      order_type:
+        allOf:
+        - $ref: '#/definitions/consts.OrderType'
+        description: OrderType 订单类型。
+      paid_at:
+        description: PaidAt 支付时间（RFC3339）。
+        type: string
+      snapshot:
+        description: Snapshot 下单快照（内容标题/金额等）。
+      tenant_id:
+        description: TenantID 内容所属租户ID。
+        type: integer
+    type: object
   dto.SuperUserLite:
     properties:
       created_at:
@@ -4015,6 +4073,43 @@ paths:
       summary: List user following tenants
       tags:
       - User
+  /super/v1/users/{id}/library:
+    get:
+      consumes:
+      - application/json
+      description: List purchased contents of a user
+      parameters:
+      - description: User ID
+        format: int64
+        in: path
+        name: id
+        required: true
+        type: integer
+      - description: Page number
+        in: query
+        name: page
+        type: integer
+      - description: Page size
+        in: query
+        name: limit
+        type: integer
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: OK
+          schema:
+            allOf:
+            - $ref: '#/definitions/requests.Pager'
+            - properties:
+                items:
+                  items:
+                    $ref: '#/definitions/dto.SuperUserLibraryItem'
+                  type: array
+              type: object
+      summary: List user library
+      tags:
+      - User
   /super/v1/users/{id}/likes:
     get:
       consumes: