* docs: add mdBook and security documentation foundation
* docs: point book links at storytold/photocraft; scope the credits entry
The book's repository/edit URLs and source links pointed at the contributor's
fork. The credits entry now describes what this PR contributed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Brandon Thomas <echelon@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Gh0stly