moonmatch demo CLI. Market profiles are passed as command-line
arguments and every answer is printed to stdout, so the
file-free/stdin-free core promise holds on every backend
(this toolchain has no file API and no exit-code API either -
the certificate: line is the machine-readable verdict).
Profile syntax: rows separated by |, integers by ,, e.g.
1,0,2|0,1,2|0,1,2 is three agents ranking receivers 0..2.