/**
 * Shared shape check for `/etc/bare-os/pear.multisig.json` (seeder hint + guest kernel.ext gate).
 * No cryptography — validates `{ signers: string[], quorum: number }` only.
 * @param {unknown} parsed
 * @returns {boolean}
 */
export function pearMultisigShapeOk(parsed) {
  if (!parsed || typeof parsed !== 'object' || Array.isArray(parsed)) return false
  const o = /** @type {{ signers?: unknown; quorum?: unknown }} */ (parsed)
  const signers = o.signers
  const quorum = o.quorum
  if (!Array.isArray(signers) || typeof quorum !== 'number') return false
  if (quorum < 1 || quorum > signers.length) return false
  return true
}