app/ui/frontend/src/components/ScenarioSelector.tsx

export default function ScenarioSelector({
  onReset,
}: {
  onReset: () => void;
}) {
  return (
    <section className="panel">
      <h3>Scenario Selector</h3>
      <button onClick={onReset}>Reset Scenario</button>
    </section>
  );
}