/proc/self
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 /.
4 (node) S 2 2 0 0 -1 4194560 11540 0 748 0 47 11 0 0 20 0 11 0 720 1646870528 23686 18446744073709551615 94844282490880 94844326250421 140735621203328 0 0 0 0 16781312 17922 0 0 0 17 1 0 0 2 0 0 94844382850976 94844383736688 94844796112896 140735621211533 140735621211771 140735621211771 140735621214181 0