Function fetch_google_doc_as_archive 

pub async fn fetch_google_doc_as_archive(
    url: &str,
    api_token: Option<&str>,
) -> Result<GDocsArchiveResult>

Fetch a Google Docs document as a ZIP archive.

Fetches the document as HTML, extracts embedded base64 images, converts to Markdown, and returns all components ready for archiving.

The archive contains:

• document.md — Markdown version
• document.html — HTML version with local image paths
• images/ — extracted images

Arguments

• url - Google Docs URL
• api_token - Optional API token for private documents

Errors

Returns an error if the fetch or conversion fails.