Clickable external links now lead with the destination site's own mark
instead of the globe when the host belongs to a known site: GitHub,
GitLab, npm, PyPI, Stack Overflow, MDN, Wikipedia, Hacker News, YouTube,
X, Bilibili, Zhihu, Juejin, and CSDN. LinkIcon takes an optional href and
resolves the mark through a private SiteGlyph module; markdown anchors,
reference links, URL-promoted inline code, and web-card source and fetch
links pass their sanitized destination. Unmapped hosts, non-http schemes,
and the file categories keep today's glyph.
The marks are the single-path form of Simple Icons (CC0-1.0) on its
24x24 viewBox, filled with currentColor like every other link glyph, so
they follow the link alias in both themes and on hover.
Coverage: the LinkIcon spec pins one host per mapped site plus the alias
and fallback branches, the markdown and web-card specs pin their consumer
wiring, and the clickable-links gallery e2e pins the assembled mark
against the globe in a real browser.
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