Authoring the Wyn book

This directory (site/book/) is the single source of truth for the Wyn book, published live at wynlang.com/book (VitePress builds it from here). Edit chapters here directly.

Chapters: NN-*.md + appendix-*.md. Landing page: index.md (hand-maintained).

History: the book was previously authored in a separate wynlang/book repo and copied here via scripts/sync-book.sh. That repo was retired 2026-07-28 and the sync script removed — there is now one copy. For Amazon/print export, assemble the NN-*.md chapters in order (they are self-contained markdown).