/proc/self/task/4
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
281 0xd 0x7ffd6cbe6000 0x400 0x305 0x0 0x8 0x7ffd6cbe5270 0x7f9efa592ec8