v2.19.0

自托管节点(rnu-node)支持 / Self-hosted node support

• /upload 请求携带 appId,服务端据此路由绑定了自托管节点的账户

• 支持 {method:'PUT'} 上传指令:s3 预签名直传,文件字节直达你自己的对象存储,不经过任何服务器中转

• 绑定节点的账户要求本版本及以上(服务端强制,保证数据托管承诺)

• /upload now carries appId so the server can route uploads for node-bound accounts

• Presigned PUT upload instructions: bytes go straight to your own S3-compatible bucket

• Node-bound accounts require this version or newer (enforced server-side)