Function below_minimum 

pub fn below_minimum(raw: &str) -> bool

Is raw below MIN_GATEWAY? Suffix- and short-form tolerant; unparseable → true — refuse safely rather than guess (CORE-08).

Note: the comparison target is the plain three-component semver 8.3.1 — semver::Version::parse is strict, so a four-component literal like "8.3.1.0" would NOT parse (the research sketch’s .0-appended constant would have made EVERY comparison fail).