Presentation & Filecheck.mount

const intake = fc.elements.create('intake', {
  workflowId: 'wf_…',
  presentation: 'dialog'
});
intake.mount('#fc-slot');

function whenReady(cb, timeout = 10000) {
  const start = Date.now();
  (function tick() {
    if (window.Filecheck && window.Filecheck.mount) return cb();
    if (Date.now() - start > timeout) return;
    setTimeout(tick, 50);
  })();
}

whenReady(() => {
  const el = window.Filecheck.mount({
    publishableKey: 'pk_live_…',
    workflowId:     'wf_…',
    presentation:   'inline',       // or 'dialog'
    mountSelector:  '#fc-slot',     // fallback if #fc-inline is absent
    connectorId:    'cntr_…',       // optional, fetched server-side
    cartButtonSelector: '.my-btn',  // optional extra cart selector
  });

  if (el) {
    el.on('status', (e) => {
      document.getElementById('fc_job_id').value = e.jobId || '';
    });
  }
});