jamey 476da8121a add header background contrast warning and improve branding UX ...

- 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>

2026-03-08 22:40:08 +00:00

1019 B

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