fix(submit): 已批准的投稿不再占上传者的存储额度，只计入存储总量

docs/openapi.yaml

@@ -5764,7 +5764,9 @@ paths:
           description: >-
             The per-user submission allowance is spent — too many of the
             caller's submissions are awaiting review, or their stored-upload
-            budget is full (submission_quota_exceeded).
+            budget is full (submission_quota_exceeded). The budget counts
+            pending uploads and rejected ones until they are reaped, 7 days after
+            review; approved uploads leave it.
         '429':
           description: >-
             A submission was created within the per-user cooldown window
@@ -5890,7 +5892,8 @@ paths:
         '403':
           description: >-
             The upload would exceed the caller's per-user stored-context budget
-            (submission_quota_exceeded).
+            (submission_quota_exceeded), which counts their pending and rejected
+            uploads; approved ones leave it.
         '404':
           $ref: '#/components/responses/NotFound'
         '409':