Evaluate one state

use Cbox\Nexus\Contracts\NexusEngine;
use Cbox\Geo\ValueObjects\SubdivisionCode;

$e = app(NexusEngine::class)->evaluate(new SubdivisionCode('US-TX'));

if ($e->needsAction()) {
    // register in $e->state; $e->reason explains why, $e->threshold->describe() the trigger
}

$e->progress; // e.g. 0.92 — 92% toward the threshold

evaluate() never throws for an unknown state — it returns Below with a reason ("No economic-nexus threshold known…"), so a caller can rely on a status always coming back.