- Moved unifiedFontStore creation from Page.svelte to Layout.svelte
- Layout now creates store instance and provides it via setContext()
- Page.svelte now receives store via getContext() instead of creating it
- Fixes context accessibility issue where FiltersSidebar and FontSearch
(siblings of Page) could not access the store
- All child components now share the same store instance at Layout level
This resolves the architectural issue where context only flows downward,
not sideways. All components (FiltersSidebar, FontSearch, Page) are now
children of Layout and can access the unifiedFontStore context.
