/** Shared helpers for drive-resident /bin scripts (prepended before each command). */
function bareStdin(ctx) {
  return typeof ctx.shellStdin === 'string' ? ctx.shellStdin : ''
}

async function run(ctx, argv) {
  const rest = argv.slice(1)
  let createNew = false
  if (rest[0] === '--new') {
    createNew = true
    rest.shift()
  }
  const passphrase = rest.join(' ')
  if (!passphrase) {
    ctx.console.error('usage: login [--new] <passphrase>')
    return
  }
  const reg = ctx.applyRegister
  const unlock = ctx.applyUnlock
  if (typeof reg !== 'function' || typeof unlock !== 'function') {
    ctx.console.error('login: not supported in this environment')
    return
  }
  try {
    if (createNew) await reg.call(ctx, passphrase)
    else await unlock.call(ctx, passphrase)
  } catch (err) {
    ctx.console.error(err?.message ?? String(err))
  }
}