- extract dominant colors from header images during optimization
- calculate WCAG contrast ratios against theme text color
- show warning in theme editor when text may be hard to read
- prevent hiding shop name when no logo is uploaded
- auto-enable shop name when logo is deleted
- fix image cache invalidation on delete
- add missing .hidden utility class
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
New external_link component in core_components handles target="_blank",
rel="noopener noreferrer", external-link icon, and sr-only "(opens in
new tab)" text. Migrated admin providers form, settings (Stripe),
order tracking, onboarding setup links to use it. Fixed rel="noopener"
to "noopener noreferrer" on remaining links (email settings, product
show, core_components card radio). Added sr-only text to shop social
link cards and aria-label to page renderer tracking link.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>