/**
 * Stable Verae user id derived from username/email.
 * Live /auth/login.user.id wins when present; this is the mock/offline id.
 */
import { createHash } from 'node:crypto';

export function normalizeVeraeUsername(username) {
  return String(username || '')
    .trim()
    .toLowerCase();
}

export function stableVeraeUserId(username) {
  const n = normalizeVeraeUsername(username);
  return `vu_${createHash('sha256').update(n).digest('hex').slice(0, 16)}`;
}