Function compute_cap_compatible 

fn compute_cap_compatible(rule_cap: &str, device_cap: &str) -> bool

Whether rule_cap can run on a device reporting device_cap.

PTX compiled for sm_X runs on any device with compute capability >= sm_X. We accept strings of the form "sm_90" / "sm_86" and do a numeric compare; anything else is treated as an exact-match requirement.