Sidebar: double the standard 3rem section gap above the icon row
(6rem), horizontally centered instead of left-aligned.
About-me page: new .social-links--large variant via a
social_links_variant template var - icons at 5rem (was 1.25rem),
centered, 3rem gap from the preceding text (standard section gap,
distinct from the normal 1rem paragraph gap), wider inter-icon gap
to match the larger size.
Small monochrome icon row (GitHub, LinkedIn, ORCID, Mastodon, Bluesky,
Matrix) rendered from a SOCIAL config tuple via a shared Jinja
partial (templates/includes/social_links.html), included unconditionally
in the sidebar below the tag cloud and again on the About-me page only.
Icons are inline SVGs (templates/icons/*.svg) using fill=currentColor,
so they track the existing accent-color/dark-mode toggle for free via
--main-link-color, no JS needed.
haemka