After centralizing favorites management in App.tsx, child components (BibleReader, BookSelector, ChapterSelector) were still trying to call setFavorites which no longer exists as local state. Fixed by: - Removing all setFavorites() calls in toggleFavorite functions - Components now only call onFavoriteChange() callback - Parent App.tsx handles all favorites state updates This resolves the TypeScript build error: "TS2552: Cannot find name 'setFavorites'" 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>