feat(backup): 玩过的世界每天在停服后自动打一个定时恢复点，按服按 owner 保留 7 个、90 天过期

docs/openapi.yaml

@@ -592,7 +592,7 @@ components:
         size_bytes: { type: integer, format: int64 }
         reason:
           type: string
-          description: inactive_15d (idle reclaim), manual (on demand) or pre_restore (the safety snapshot in front of a restore).
+          description: inactive_15d (idle reclaim), manual (on demand), pre_restore (the safety snapshot in front of a restore) or scheduled (the daily restore point felis-api takes of a world played since its last one, once the server stops).
         status: { type: string }
         created_at: { type: string, format: date-time }
         expires_at: { type: string, format: date-time }
@@ -3695,6 +3695,11 @@ paths:
                         restore_backup_id:
                           type: string
                           description: The backup the chained restore extracts.
+                        scheduled:
+                          type: boolean
+                          description: >-
+                            A backup felis-api took on its own: the daily restore
+                            point of a played world. Omitted when false.
         '401':
           $ref: '#/components/responses/Unauthorized'
         '403':