Catalog expansion
Added the complete topic shelf, full-text filtering, a revision log, and an RSS feed.
Revision log
Updates
Material changes to the catalog, recorded without turning maintenance into news.
Three notes revised
Clarified examples in Tools that age well, Small routines that hold, and Three copies, two forms.
Accessibility pass
Improved keyboard focus, mobile navigation, heading order, and reading contrast.
Reference shelf opened
Published the first field note and established a stable address for the collection.