¿Cómo añadir una pista de Apple Music a tu biblioteca con AppleScript?

Aquí está mi solución actual un poco chapucera (JXA) que utiliza la API de Apple Music para obtener el número de la pista:

const delayAmount = 0.1

// para una versión síncrona algo así debería funcionar (no probada):
/*
const app = Application.currentApplication()
app.includeStandardAdditions = true
const token = '...'
const appleMusicRequest = path => JSON.parse(app.doShellScript(`/usr/bin/curl -f -H authorization:'Bearer ${token}' -H origin:https://amp-api.music.apple.com https://amp-api.music.apple.com/v1/${path}`))
*/
const appleMusicRequest = (() => {
  ObjC.import('Cocoa')

  const token = 'eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCIsImtpZCI6IldlYlBsYXlLaWQifQ.eyJpc3MiOiJBTVBXZWJQbGF5IiwiaWF0IjoxNzAyNTAyMjM0LCJleHAiOjE3MDk3NTk4MzQsInJvb3RfaHR0cHNfb3JpZ2luIjpbImFwcGxlLmNvbSJdfQ.zzeMLmez71PLinP9GozYSQnF7NYyCiXHB9tKL3-cyu3LzyeRnYz0ejLj4CrNJs0dlNkFg9_mwKmMLueUAR-KRg'
  const sessionConfig = $.NSURLSessionConfiguration.defaultSessionConfiguration
  sessionConfig.HTTPAdditionalHeaders = $({authorization: `Bearer ${token}`, origin: 'https://amp-api.music.apple.com'})
  const session = $.NSURLSession.sessionWithConfiguration(sessionConfig)
  const baseURL = $.NSURL.URLWithString($('https://amp-api.music.apple.com/v1/'))
  // o si eres parte del Programa de Desarrolladores de Apple puedes usar tu propio token:
  /*
  const token = 'tu token de desarrollador'
  const sessionConfig = $.NSURLSessionConfiguration.defaultSessionConfiguration
  sessionConfig.HTTPAdditionalHeaders = $({authorization: `Bearer ${token}`})
  const session = $.NSURLSession.sessionWithConfiguration(sessionConfig)
  const baseURL = $.NSURL.URLWithString($('https://api.music.apple.com/v1/'))
  */

  return async path => new Promise((resolve, reject) =>
    session.dataTaskWithURLCompletionHandler(
      $.NSURL.URLWithStringRelativeToURL($(path), baseURL),
      (data, response, error) => {
        if (!error.isNil()) {
          reject(error)
          return
        }
        const string = $.NSString.alloc.initWithDataEncoding(data, $.NSUTF8StringEncoding).js
        response.statusCode === '200'
          ? resolve(JSON.parse(string))
          : reject(new Error(`Código de estado ${response.statusCode}: ${string}`))
      }
    ).resume
  )
})()
const appleMusicTrack = async (trackID, storefront = 'au') => (await appleMusicRequest(`catalog/${storefront}/songs/${trackID}`)).data[0]

const Music = Application('Music')
Music.includeStandardAdditions = true

const SystemEvents = Application('System Events')
const musicProcess = SystemEvents.processes.Music

const addTrack = async (albumID, trackID) => {
  Music.openLocation(`itmss://geo.music.apple.com/album/${albumID}?ls=1&app=music`)
  const mainUIElement = musicProcess.windows[0].splitterGroups[0].scrollAreas[1].lists[0]
  while (mainUIElement.lists().length !== 2 || !mainUIElement.lists[1].groups().length) delay(delayAmount)

  const trackContainer = mainUIElement.lists[1]

  const trackNumber = (await appleMusicTrack(trackID)).attributes.trackNumber
  const trackGroup = trackContainer.groups[trackNumber - 1].groups[0]

  trackGroup.buttons.whose({description: 'Más'})[0].click()
  while (!trackGroup.menus().length) delay(delayAmount)

  trackGroup.menus[0].menuItems['Agregar a la biblioteca'].click()
}

Con suerte hay una mejor forma de hacer esto.