Download private notebook #105
Description
The notebooks download command doesn't support private notebooks. I tried modifying https://github.com/observablehq/notebook-kit/blob/main/bin/download.ts to include an API key that I use for downloading notebook JS (e.g. https://api.observablehq.com/NOTEBOOK_URI.js?v=3&api_key=123456) and it looks like the https://api.observablehq.com/document/ API doesn't support API keys. Is there an existing solution that I'm missing or can you add API key support to the document endpoint?