Module and model book cards now point at generated index.html/index.pdf
instead of directory URLs that 404. WeasyPrint file:// annotations are
mapped to https://zapier.georgelambert.org/ paths that exist. Developer
module, architecture, and research snapshot links target published files.
PDFs rewrite in-document .md/.html links to sibling PDFs. Catalog
start page is GETTING-STARTED (install, first-up, monitor). Billing
and user platform is zappier-edge (original ~/zappier tree).
