Upload a session infographic to Google Drive

A webhook starts it. There are two entry points that do the same job: one takes a POST with the record ID in the body, the other takes the record ID in the query string and replies straight away.

The workflow reads the record from Airtable, downloads the first file in its Attachments field and uploads it to the Google Drive folder you choose under its original name. The Drive download link is written to the attachment_gdrive_link field on the record. The WordPress workflows read that link to offer the infographic as a download.