- Add GalleryPreview component that shows simplified gallery layouts
- Update ThemeEditorModal with split view: theme customizer on left, preview on right
- Add grid style selector above preview to switch between layouts
- Update BrandingPage to show live preview alongside theme customizer
- Add preview to CreateEventPageEnhanced when customizing themes
- Support all 6 gallery layouts: grid, masonry, carousel, timeline, hero, mosaic
- Add translation keys for preview layout and live preview
The preview accurately reflects different grid layouts and theme settings,
helping users visualize how their galleries will look before saving.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>