Developer documentation (js-utilities format) #27

REQUIREMENTS §19. Docusaurus-format markdown in /docs, matching @javaabu/js-utilities.

• metadata.json
• intro.md, requirements.md, installation-and-setup.md, questions-and-security.md, changelog.md, about-us.md, contributing-to-docs.md with front matter
• Guides: design & density, icons (incl. FontAwesome Pro), fonts, theming, dark mode, RTL, Dhivehi & locales, Thaana input, accessibility, style overrides, forms & Laravel validation, Inertia / Next.js
• One folder per build-list group with _category_.json
• One page per component: description, import, usage, props, variants, slots, RTL/Thaana notes, keyboard table, examples
• CI check that every exported component has a docs page