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const pad = (n: number): string => String(n).padStart(2, "0");
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export const formatDate = (input: string | Date): string => {
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  const d = typeof input === "string" ? new Date(input) : input;
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  if (Number.isNaN(d.getTime())) return "—";
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  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())}`;
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};
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export const formatDateTime = (input: string | Date): string => {
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  const d = typeof input === "string" ? new Date(input) : input;
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  if (Number.isNaN(d.getTime())) return "—";
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  return `${formatDate(d)} ${pad(d.getHours())}:${pad(d.getMinutes())}`;
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};