Underline-at-rest (WCAG AA) so the link affordance does not depend on
colour alone. focus-visible uses a 2px box-shadow ring on --c-ink with a
2px border-radius — the same focus-ring shape as the comment .mention
chip but rectangular instead of pill, since the anchor sits in flowing
text.
Lives next to the existing .mention rule because Svelte scoped styles
do not reach the HTML injected by {@html …} in TranscriptionReadView.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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