UnoCSS's .i-pajamas:gitea rule is unlayered CSS; our override lived in
@layer starlight.core, and unlayered rules always beat layered ones
regardless of specificity or source order. The Gitea icon has silently
stayed at UnoCSS's 1em default since it was first added -- confirmed via
computed style in the browser, not just reading the stylesheet source.
!important restores the override across the layer boundary.
Also drops the GitHub icon from 2x to 1.5x per visual feedback.
pandoc wasn't available when this branch's earlier commit ran
build-manual.py --concat; regenerate docs/fish-config.1 from the
current docs/fish-config.md now that it is.
Adds a GitHub social icon to the docs site header alongside the existing
Gitea one, and documents in the README's Contributing section that
git.rootiest.dev is the base repo while the GitHub copy is a one-way
mirror, so forks/issues/PRs should go through Gitea.
Adds Testing, Contributing, Attribution, and License sections to the
manual/man page/site, sourced directly from README.md via a new
`<!-- README: Heading -->` placeholder mechanism in build-manual.py, so
the README stays the single source of truth for those sections instead
of a hand-maintained copy drifting out of sync.
Also converts docs/manual/00-table-of-contents.md from a hand-typed list
to a generated one (mt.walk()-driven), fixing a numbering drift where
Components Reference was omitted and every section after it was off by
one relative to its own manTitle.