pub(crate) fn pick_winner<'a>(
reports: &'a [Report],
reference: Option<&str>,
) -> Option<&'a Report>Expand description
The best candidate: highest accuracy among models whose top token was an offered label in every case, ties broken by median latency. Fidelity is a gate first — a model cerno cannot read is not a candidate at any accuracy — and the reference is excluded, since it is the yardstick rather than an option.