Looks up fixes by identifier. Returns an empty array if none found.
OptionalbyOptionally looks up the single fix sharing the identifier that lies nearest
a reference position, disambiguating same-identifier collisions by proximity
to the previously resolved route waypoint. When omitted, the resolver falls
back to the first byIdent match.
OptionaltoleranceNm: number
Minimal fix lookup interface consumed by the flightplan resolver. Structurally compatible with the
FixResolvershape in@squawk/fixes.