Phase 1 Week 1: Database schema for universal sync system
- Add format_group columns to media_items table
- Add universal progress tracking to reading_progress (percentage, epubcfi, chapter, etc.)
- Add device sync metadata (last_sync_device, conflict tracking)
- Add location enhancements to media_notes and media_highlights
- Create devices table for device registry
- Create sync_queue table for offline support
- Create sync_conflicts table for conflict resolution
- Create reading_history table for session tracking
- Add 15 new indexes for performance
- Create update_updated_at_column trigger function
- Add SQL helper functions: detect_format_group, convert_progress, detect_conflict, merge_progress
Schema grew from 272 to 598 lines (+326 lines)
Verified with sqlc generate
john-okeefe
fa4a9c35bb