docs: add comprehensive features backlog for Bible reader

Created detailed backlog document tracking all planned features: **Phase 1 (Completed):** - Typography controls - Multi-color highlighting - Mobile gestures - WCAG AAA accessibility **Phase 2 (Planned - High Priority):** - Text-to-speech with voice control - Parallel Bible view (2-3 versions side-by-side) - Cross-references panel - Export functionality (PDF, DOCX, Markdown) - Reading plans with progress tracking - Rich text study notes - Tags & categories system - Speed reading mode (RSVP) - Focus mode enhancements - Custom fonts & dyslexia support **Phase 3 (Future):** - AI-powered smart suggestions - Reading analytics dashboard - Social & collaboration features - Enhanced offline experience - Advanced search & discovery Includes: - Priority matrix with estimated timelines - Technical implementation notes - Database schema requirements - API endpoints to create - Third-party service integrations - Performance optimization checklist - Resource references and standards Total: 15 feature areas with 100+ specific items 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
2025-10-10 12:52:59 +00:00
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+# Bible Reader - Features Backlog
+
+This document tracks planned features and enhancements for the Bible Reader module based on 2025 state-of-the-art reading standards.
+
+## ✅ Phase 1 - Core Reading Experience (COMPLETED)
+
+### Typography & Customization ✅
+- [x] Enhanced typography controls (letter/word/paragraph spacing)
+- [x] Max line length control (50-100ch)
+- [x] Font family selection (serif/sans-serif)
+- [x] Theme support (light/dark/sepia)
+- [x] Reading mode (distraction-free)
+
+### Highlighting & Annotations ✅
+- [x] Multi-color highlighting system (7 colors)
+- [x] Inline annotations for highlights
+- [x] Database persistence (Prisma)
+- [x] Full CRUD API endpoints
+- [x] Theme-aware highlight colors
+
+### Mobile Experience ✅
+- [x] Swipe left/right for chapter navigation
+- [x] Tap zones for quick navigation (25% left/right)
+- [x] Smooth page transitions (fade + scale)
+- [x] Touch-optimized gestures
+- [x] Settings toggles for mobile features
+
+### Accessibility (WCAG AAA) ✅
+- [x] Enhanced contrast ratios (7:1+ for all themes)
+- [x] 2px visible focus indicators
+- [x] ARIA live regions for screen readers
+- [x] Skip navigation link
+- [x] Full keyboard navigation
+- [x] 200% zoom support without content loss
+
+---
+
+## 📋 Phase 2 - Advanced Reading Features
+
+### Priority: HIGH
+
+#### 1. Text-to-Speech (TTS)
+**User Value:** Accessibility, multitasking, learning styles
+**Complexity:** Medium
+**Implementation:**
+- [ ] Integrate Web Speech API
+- [ ] Voice selection (male/female, languages)
+- [ ] Speed control (0.5x - 2.0x)
+- [ ] Pitch control
+- [ ] Auto-advance to next chapter
+- [ ] Highlight current verse being read
+- [ ] Pause/resume/stop controls
+- [ ] Background playback support
+- [ ] Verse-level navigation (skip to verse)
+- [ ] Persistent player bar (sticky)
+
+**Technical Notes:**
+- Use `window.speechSynthesis` API
+- Store TTS preferences in localStorage
+- Handle browser compatibility (fallback for unsupported browsers)
+- Consider premium voices via third-party APIs (Amazon Polly, Google Cloud TTS)
+
+#### 2. Parallel Bible View
+**User Value:** Study, comparison, translation verification
+**Complexity:** Medium
+**Implementation:**
+- [ ] Side-by-side layout (2-3 versions)
+- [ ] Synchronized scrolling
+- [ ] Version selector per pane
+- [ ] Responsive layout (stack on mobile)
+- [ ] Verse alignment highlighting
+- [ ] Diff view for text differences
+- [ ] Quick swap versions
+- [ ] Column width adjustment
+- [ ] Independent highlighting per version
+- [ ] Export comparison view
+
+**Technical Notes:**
+- Use CSS Grid for flexible layout
+- Implement scroll synchronization with IntersectionObserver
+- Store selected versions in URL params
+- Consider performance with multiple API calls
+
+#### 3. Cross-References Panel
+**User Value:** Context, deeper understanding, study
+**Complexity:** Medium
+**Implementation:**
+- [ ] Fetch cross-references from database/API
+- [ ] Display in collapsible sidebar
+- [ ] Show preview on hover
+- [ ] Click to navigate to reference
+- [ ] Group by category (parallel passages, quotations, themes)
+- [ ] Visual indicators in text (superscript letters)
+- [ ] Filter by reference type
+- [ ] Add custom cross-references
+- [ ] Bidirectional linking
+- [ ] Search cross-references
+
+**Technical Notes:**
+- Requires cross-reference data in database
+- Use OpenBible.info cross-reference data or similar
+- Implement lazy loading for performance
+- Add caching for frequently accessed references
+
+#### 4. Export Functionality
+**User Value:** Sharing, printing, offline study
+**Complexity:** Medium-High
+**Implementation:**
+- [ ] Export to PDF (with highlights/notes)
+- [ ] Export to DOCX (Microsoft Word)
+- [ ] Export to Markdown
+- [ ] Export to plain text
+- [ ] Include/exclude highlights option
+- [ ] Include/exclude notes option
+- [ ] Custom cover page
+- [ ] Table of contents
+- [ ] Verse number formatting options
+- [ ] Print-optimized layout
+
+**Technical Notes:**
+- Use jsPDF or pdfmake for PDF generation
+- Use docxtemplater for DOCX
+- Server-side generation for better quality
+- Consider file size limits
+- Add download progress indicator
+
+---
+
+### Priority: MEDIUM
+
+#### 5. Reading Plans with Progress Tracking
+**User Value:** Discipline, goal achievement, spiritual growth
+**Complexity:** High
+**Implementation:**
+- [ ] Pre-defined reading plans (Bible in 1 year, 90 days, etc.)
+- [ ] Custom reading plan builder
+- [ ] Daily reading reminders
+- [ ] Progress tracking (days completed, streak)
+- [ ] Calendar view of plan
+- [ ] Catch-up mode (reschedule missed days)
+- [ ] Plan sharing/importing
+- [ ] Reading plan templates
+- [ ] Notifications for daily readings
+- [ ] Statistics and insights
+
+**Technical Notes:**
+- Database schema for reading plans
+- Cron job for daily notifications
+- Integration with calendar apps (iCal export)
+- Push notifications via service worker
+
+#### 6. Rich Text Study Notes
+**User Value:** In-depth study, organization, knowledge retention
+**Complexity:** Medium
+**Implementation:**
+- [ ] Rich text editor (WYSIWYG)
+- [ ] Formatting options (bold, italic, lists, headers)
+- [ ] Image embedding
+- [ ] Link insertion
+- [ ] Code snippets (for Hebrew/Greek)
+- [ ] Markdown support
+- [ ] Note templates
+- [ ] Folder organization
+- [ ] Search within notes
+- [ ] Export notes separately
+
+**Technical Notes:**
+- Use TipTap or Quill editor
+- Store notes in database (JSON format)
+- Implement full-text search
+- Add image upload to cloud storage
+
+#### 7. Tags & Categories System
+**User Value:** Organization, discovery, thematic study
+**Complexity:** Medium
+**Implementation:**
+- [ ] Create custom tags
+- [ ] Tag highlights and notes
+- [ ] Tag autocomplete
+- [ ] Tag-based filtering
+- [ ] Tag cloud visualization
+- [ ] Predefined tag library (themes, topics)
+- [ ] Nested tags/categories
+- [ ] Tag merging and renaming
+- [ ] Tag usage statistics
+- [ ] Share tags with community
+
+**Technical Notes:**
+- Many-to-many relationship in database
+- Implement tag search with fuzzy matching
+- Add tag color coding
+- Consider hierarchical tags (parent/child)
+
+#### 8. Speed Reading Mode
+**User Value:** Time efficiency, comprehension training
+**Complexity:** Medium
+**Implementation:**
+- [ ] RSVP (Rapid Serial Visual Presentation) mode
+- [ ] Adjustable WPM (200-1000)
+- [ ] Focus point indicator
+- [ ] Chunking (display 1-3 words at a time)
+- [ ] Pause on punctuation
+- [ ] Comprehension checkpoints
+- [ ] Eye training exercises
+- [ ] Speed reading tutorials
+- [ ] Progress tracking (WPM improvement)
+- [ ] Customizable display area
+
+**Technical Notes:**
+- Use setInterval for word display timing
+- Implement optimal fixation point (slightly left of center)
+- Add keyboard shortcuts for control
+- Store reading speed in user preferences
+
+#### 9. Focus Mode Enhancements
+**User Value:** Concentration, reduced distraction
+**Complexity:** Low-Medium
+**Implementation:**
+- [ ] Dimming/masking of surrounding text
+- [ ] Guided reading line (follows scroll)
+- [ ] Spotlight mode (highlight current paragraph)
+- [ ] Blur surrounding content
+- [ ] Reading ruler overlay
+- [ ] Focus intensity adjustment
+- [ ] Auto-scroll with adjustable speed
+- [ ] Bionic reading format (bold first letters)
+- [ ] Sentence-by-sentence mode
+- [ ] Breathing reminders during reading
+
+**Technical Notes:**
+- Use CSS filters and opacity
+- Implement scroll-linked animations
+- Add smooth auto-scroll with requestAnimationFrame
+- Consider accessibility implications
+
+#### 10. Custom Fonts & Dyslexia Support
+**User Value:** Readability, accessibility, personal preference
+**Complexity:** Medium
+**Implementation:**
+- [ ] Google Fonts integration
+- [ ] Upload custom fonts
+- [ ] Dyslexia-friendly fonts (OpenDyslexic, Lexend)
+- [ ] Font preview
+- [ ] Font size presets (small, medium, large, extra-large)
+- [ ] Font weight adjustment
+- [ ] Letter spacing presets for dyslexia
+- [ ] Color filter overlays (yellow, blue, green)
+- [ ] High contrast mode
+- [ ] Font pairing recommendations
+
+**Technical Notes:**
+- Use @font-face for custom fonts
+- Add font loading optimization
+- Store font preferences in user profile
+- Implement font subsetting for performance
+
+---
+
+## 📋 Phase 3 - Smart Features & Analytics
+
+### Priority: FUTURE
+
+#### 11. AI-Powered Smart Suggestions
+**User Value:** Discovery, deeper study, personalized experience
+**Complexity:** High
+**Implementation:**
+- [ ] Related verses based on current reading
+- [ ] Thematic verse discovery
+- [ ] Semantic search (not just keyword)
+- [ ] AI-generated study questions
+- [ ] Automatic verse categorization
+- [ ] Personalized reading recommendations
+- [ ] Smart highlighting suggestions
+- [ ] Context-aware cross-references
+- [ ] Reading pattern analysis
+- [ ] AI study companion chatbot
+
+**Technical Notes:**
+- Integrate OpenAI API or local LLM (Ollama)
+- Use vector embeddings for semantic search
+- Implement RAG (Retrieval Augmented Generation)
+- Cache AI responses for performance
+- Consider API costs and rate limits
+
+#### 12. Reading Analytics Dashboard
+**User Value:** Insights, motivation, goal tracking
+**Complexity:** High
+**Implementation:**
+- [ ] Reading heatmap (most-read passages)
+- [ ] Time tracking per book/chapter
+- [ ] Reading streak visualization
+- [ ] Words read counter
+- [ ] Comprehension metrics (re-read rate, highlight density)
+- [ ] Reading speed over time
+- [ ] Favorite books/chapters
+- [ ] Reading goals (daily, weekly, monthly)
+- [ ] Progress towards Bible completion
+- [ ] Shareable achievements/badges
+
+**Technical Notes:**
+- Store reading events in time-series database
+- Use Chart.js or Recharts for visualizations
+- Implement background tracking (respectful of privacy)
+- Add data export (GDPR compliance)
+
+#### 13. Social & Collaboration Features
+**User Value:** Community, accountability, shared learning
+**Complexity:** High
+**Implementation:**
+- [ ] Share highlights with friends
+- [ ] Public/private notes toggle
+- [ ] Verse discussions (comments)
+- [ ] Group study sessions
+- [ ] Shared reading plans
+- [ ] Follow friends' reading activity
+- [ ] Reading groups/communities
+- [ ] Social sharing (Twitter, Facebook)
+- [ ] Collaborative notes (Google Docs style)
+- [ ] Leaderboards (reading streaks, completion)
+
+**Technical Notes:**
+- Implement permissions system (public/private/friends)
+- Real-time collaboration with WebSockets
+- Privacy controls and moderation
+- Social media API integration
+- Consider COPPA compliance for younger users
+
+#### 14. Enhanced Offline Experience
+**User Value:** Reliability, data savings, offline access
+**Complexity:** Medium-High
+**Implementation:**
+- [ ] Selective chapter download
+- [ ] Smart pre-fetching based on reading history
+- [ ] Background sync of highlights/notes
+- [ ] Conflict resolution for offline edits
+- [ ] Delta sync (only changed data)
+- [ ] Offline search indexing
+- [ ] Download progress indicator
+- [ ] Storage management (clear cache)
+- [ ] Offline-first architecture
+- [ ] Service worker optimization
+
+**Technical Notes:**
+- Expand PWA capabilities
+- Use IndexedDB for local storage
+- Implement sync queue for offline changes
+- Add background sync API
+- Optimize for low storage devices
+
+#### 15. Advanced Search & Discovery
+**User Value:** Research, quick access, deep study
+**Complexity:** Medium-High
+**Implementation:**
+- [ ] Full-text search across all versions
+- [ ] Advanced filters (book, testament, keywords)
+- [ ] Search within highlights/notes
+- [ ] Regular expression search
+- [ ] Proximity search (words near each other)
+- [ ] Wildcard and fuzzy search
+- [ ] Search history
+- [ ] Saved searches
+- [ ] Search suggestions/autocomplete
+- [ ] Visual search results (context preview)
+
+**Technical Notes:**
+- Implement full-text search in database (PostgreSQL)
+- Use Elasticsearch for advanced search
+- Add search result ranking algorithm
+- Cache frequent searches
+
+---
+
+## 🎯 Implementation Priority Matrix
+
+| Feature | User Impact | Complexity | Priority | Estimated Time |
+|---------|-------------|------------|----------|----------------|
+| Text-to-Speech | High | Medium | 🔴 High | 2-3 weeks |
+| Parallel Bible View | High | Medium | 🔴 High | 2 weeks |
+| Cross-References Panel | High | Medium | 🔴 High | 2 weeks |
+| Export Functionality | High | Medium-High | 🔴 High | 2-3 weeks |
+| Reading Plans | Medium | High | 🟡 Medium | 3-4 weeks |
+| Rich Text Notes | Medium | Medium | 🟡 Medium | 2 weeks |
+| Tags & Categories | Medium | Medium | 🟡 Medium | 1-2 weeks |
+| Speed Reading Mode | Medium | Medium | 🟡 Medium | 2 weeks |
+| Focus Mode Enhanced | Low-Medium | Low-Medium | 🟡 Medium | 1 week |
+| Custom Fonts | Low-Medium | Medium | 🟡 Medium | 1 week |
+| AI Suggestions | Medium-High | High | 🔵 Future | 4-6 weeks |
+| Analytics Dashboard | Medium | High | 🔵 Future | 3-4 weeks |
+| Social Features | Medium | High | 🔵 Future | 4-6 weeks |
+| Enhanced Offline | Low-Medium | Medium-High | 🔵 Future | 2-3 weeks |
+| Advanced Search | Medium | Medium-High | 🔵 Future | 2-3 weeks |
+
+---
+
+## 📊 Technical Debt & Infrastructure
+
+### Database Schema Updates Needed
+- [ ] Cross-references table
+- [ ] Reading plans table
+- [ ] Study notes table (rich text)
+- [ ] Tags table (many-to-many with highlights)
+- [ ] Reading events table (analytics)
+- [ ] User preferences expansion
+
+### API Endpoints to Create
+- [ ] `/api/cross-references` - Fetch cross-references
+- [ ] `/api/reading-plans` - CRUD for reading plans
+- [ ] `/api/notes` - Rich text study notes
+- [ ] `/api/tags` - Tag management
+- [ ] `/api/export` - Generate exports (PDF, DOCX, etc.)
+- [ ] `/api/tts/voices` - Available TTS voices
+- [ ] `/api/analytics/reading-events` - Track reading activity
+- [ ] `/api/search/advanced` - Advanced search
+
+### Third-Party Services to Integrate
+- [ ] Web Speech API (built-in)
+- [ ] Amazon Polly / Google Cloud TTS (premium voices)
+- [ ] OpenBible.info API (cross-references)
+- [ ] jsPDF / pdfmake (PDF generation)
+- [ ] OpenAI API (AI features)
+- [ ] Elasticsearch (advanced search)
+- [ ] SendGrid/Mailgun (reading plan reminders)
+
+### Performance Optimizations
+- [ ] Implement virtual scrolling for long chapters
+- [ ] Add code splitting for features
+- [ ] Optimize bundle size (tree shaking)
+- [ ] Add server-side caching (Redis)
+- [ ] Implement CDN for static assets
+- [ ] Database query optimization (indexes)
+- [ ] Image optimization for exports
+
+---
+
+## 🔗 Resources & References
+
+### Design Inspiration
+- Kindle (Amazon) - Reading experience, highlighting
+- Apple Books - Annotations, themes
+- Readwise Reader - Highlighting, export
+- Instapaper - Reading mode, fonts
+- Medium - Typography, focus mode
+
+### Technical Standards
+- WCAG 2.1 Level AAA - Accessibility
+- PWA Best Practices - Offline experience
+- Material Design 3 - UI components
+- Web Speech API - Text-to-speech
+- Service Worker API - Background sync
+
+### Data Sources
+- OpenBible.info - Cross-references
+- Blue Letter Bible API - Study resources
+- BibleGateway - Verse references
+- ESV API - Bible text
+- YouVersion API - Reading plans
+
+---
+
+## 📝 Notes
+
+- All new features should maintain WCAG AAA accessibility
+- Mobile-first approach for all implementations
+- Consider performance impact on low-end devices
+- Ensure all features work offline where applicable
+- Add comprehensive tests for new features
+- Update documentation as features are added
+
+---
+
+**Last Updated:** 2025-10-10
+**Current Phase:** Phase 1 Complete ✅
+**Next Milestone:** Phase 2A - High Priority Features