Wished at https://github.com/adr/adr.github.io/pull/63 and https://github.com/adr/adr.github.io/issues/55#issuecomment-2500965895. Filed "upstream" at https://github.com/cotes2020/jekyll-theme-chirpy/issues/2067
Wished at #63 and #55 (comment).
Filed "upstream" at cotes2020/jekyll-theme-chirpy#2067