Add install-minui.md with tested devices, installation steps, and
update instructions. Add MinUI to mkdocs nav and cfw-links. Set
FORCE_JAVASCRIPT_ACTIONS_TO_NODE24 on both workflows ahead of the
June 2026 deprecation of Node.js 20 runners.
Add docs/_includes/cfw-links.md as shared link definitions included
via pymdownx.snippets in all doc pages. README uses markdown
reference-style links defined at the bottom. Update Allium URL to
goweiwen/Allium, Onion to onionui.github.io, TrimUI to github.com/trimui.
pawndev
Brandon T. Kowalski