/**
 * Parse optional seeder Hyperswarm options from host env.
 * @param {Record<string, string | undefined> | null | undefined} env
 * @returns {Record<string, unknown>}
 */
export function bareOsSeederHyperswarmOptsFromEnv(env) {
  /** @type {Record<string, unknown>} */
  const o = {}
  const maxPeersRaw = String(env?.BARE_OS_SEED_MAX_PEERS ?? '').trim()
  if (maxPeersRaw) {
    const n = Number(maxPeersRaw)
    if (Number.isFinite(n) && n >= 1) o.maxPeers = Math.min(4096, Math.floor(n))
  }
  return o
}