footer: copyright: underline links
sass: follow bg selector: fix color
sass: follow bg selector: fix typo
sass: fix follow bg selector
sass: dim background on popups, unify impl
mobile: follow: bring back click-outside-to-close
sass: social share: do not hide text on narrow

it does fit
sass: page__related: remove a override
archive-single: remove one layer of unneeded div
remove rel="permalink"

weird custom rel usage without any obvious effect
git: ignore vendor assets
print: don't draw light/dark toggle
fa: self-host
profile: remove platform-specific link generators

those are dumb when you have a generic one
links: simplify sa usage
fa: fav4-ify
page__meta: fa: always fixed width

ruby: depends on matrix, for classifier-reborn, for ruby 3.1
un-vendor lunr, use npm to copy
js: cleanup, un-webpackify, trim unused