fix(审计): 移除共享库审计与预览噪声

backend/app/services/onlyoffice_collaboration_service.py

@@ -396,11 +396,6 @@ async def process_callback(
                 # 强制保存不结束当前共同编辑会话；同步基线可保证 Document
                 # Server 缓存重建时仍从最近一次持久化内容恢复。
                 session.base_revision_id = revision.id
-            if created and actor:
-                await collaboration_service._audit(
-                    db, item, "COLLABORATION_REVISION_SAVED", actor,
-                    {"revision_no": revision.revision_no, "source": source},
-                )
     elif payload.status == 4:
         session.status = "CLOSED"
         session.closed_at = datetime.now(timezone.utc)