export function formatRunIdAmbiguity(
  kind: string,
  prefix: string,
  candidates: readonly string[],
): string {
  const preview = candidates.slice(0, 5);
  return `Ambiguous ${kind} run id prefix '${prefix}' matched: ${preview.join(", ")}. ${candidates.length} matches (showing ${preview.length}). Provide a longer prefix or full run id.`;
}