profile: remove platform-specific link generators
those are dumb when you have a generic one
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
font: use system, dim colors
let's respect users' choice, and emulate the original light touch by
color. this removes the major source of current loaded assets size.
those don't have proper cjk font probably cannot read chinese anyway.
posts: choosing-distro: adjust package format section
posts: add choosing distro
masthead: lower nav font size
sass: adjust avatar position on top bar