- Add Highlight struct to represent bookmarks with owned memory
- Implement SHA-256 hashing for text and book identification
- Update SQL query to extract clean book filenames (removes path and fragment)
- Remove unused Annotation column from query
- Add CLAUDE.md for repository documentation
- Update .gitignore to exclude SQLite WAL files
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
