revert: 去掉资源历史查询逻辑, 保留纯IP+is_primary分配

- 网盘分享按新资源奖励机制, 不需追资源转存历史
- getAndValidateCredential 去掉 shareUrl 参数
- 保留 save_records.config_id 字段(仅用于日志排查)

packages/backend/src/cloud/cloud.service.ts

@@ -141,7 +141,7 @@ async function doSaveFromShare(shareUrl: string, cloudType: string, sourceTitle?
   }
 
   // ── Unified credential validation ──
-  const credential = await getAndValidateCredential(cloudType, ipAddress, shareUrl);
+  const credential = await getAndValidateCredential(cloudType, ipAddress);
   if (!credential.valid || !credential.config) {
     return { success: false, message: credential.message };
   }