- **Removed header breadcrumbs** that caused horizontal scrolling on mobile
- **Added content-aware breadcrumbs** to each page for better UX:
- BookSelector: 'Books' (clickable back to version home)
- ChapterSelector: 'Books > [Book Name]' (Books clickable, book name current)
- **Chapter favorites version-segregated** - fixed cross-version contamination
- **Homepage text updated** 'Both translations' → 'All translations'
- **Improved navigation flow** with clean breadcrumb system
- **Better mobile experience** no more scrolling required for nav
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