- Added support for 'moved' and 'style-changed' change types in PDF comparison.
- Implemented category filters for changes, allowing users to filter by text, images, headers, annotations, formatting, and background.
- Introduced zoom functionality with buttons for zooming in, out, and resetting to default.
- Updated UI to reflect new change types and categories, including visual indicators for moved and style-changed items.
- Enhanced summary display to include counts for moved and style-changed changes.
- Refactored rendering logic to accommodate zoom levels and improve performance.
- Added tests for new change detection features and category assignments.
- Refactored CompareState to import from a centralized type definition.
- Enhanced the compare-pdfs.html layout with improved styles for overlay and side-by-side modes.
- Added new CSS styles for various UI components including panels, buttons, and highlights.
- Implemented a new sidebar for displaying change summaries and filters.
- Created unit tests for text comparison logic, including diffing text runs and page pairing.
- Added tests for text normalization functions to ensure proper handling of punctuation and character normalization.
