/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 0x7ffeab114dd0 0x400 0x291 0x0 0x8 0x7ffeab114050 0x7f4578ff2ec8