github/orcid/mastodon/bluesky/matrix: official Simple Icons paths
(CC0), fetched from simple-icons/simple-icons. linkedin: Simple Icons
no longer includes it (removed from the project entirely, likely a
brand/legal request), so sourced from Tabler Icons' brand-linkedin
(filled variant, MIT license) instead for a closer visual match to
the other filled-style icons than their outline variant.
Previous icons were reconstructed from memory as an approximation,
not verified against any actual licensed source.
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