File overwritting while multiple-processing codecs.

While using Nimble, CADOrchestrator. Handling multiple request on parallel is not currently possible, as the files are fixed named under /tmp in linux for example. "temp_stl.stl", "temp_dxf.dxf". Multiple processing would try to write/read the same files, creating bottlenecks and other unwanted overwriting conditions.

检查 CLI 对 Nimble 和 CADOrchestrator 编解码器处理的临时文件处理，然后在 Linux 上复现两个并行运行的请求。当并发处理使用请求专用的临时路径，并且不再覆盖或读取其他请求的文件时，即表示完成。

由索引模型根据 Issue 内容生成。