One rule: an argv pattern, optional order-free tokens, and a reply.
Readonly
Optional
Tokens that must each match some argv token AFTER the positional prefix, in any order — for flags a model writes in any order (--repo o/r or -R o/r). Needs a trailing rest in argv (without it nothing follows the prefix).
--repo o/r
-R o/r
rest
argv
One rule: an argv pattern, optional order-free tokens, and a reply.