- Move Rmd archetype from _default/ to rmarkdown/ so hugo-new.sh's
--kind rmarkdown resolves to the correct archetype instead of
working by accident via file extension fallback
- Replace broad content/*/* glob in .build_sentinel with explicit
find for content (.md, .html, images), layouts, and hugo.yaml
- Fix typo in Makefile comment ("my" -> "by")
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
7280c9a623