- Add reorderSlides function to useSlideOperations hook
- Update SlidesSidebar to handle drag-and-drop events
- Make SlideThumbnail components draggable with visual feedback
- Add CSS styles for drag states (dragged, drag-over, drag handle)
- Implement proper slide order management and persistence
- Add visual indicators for drag operations (opacity, transform, borders)
- Disable drag operations when saving to prevent conflicts
This completes the slide reordering feature from the user flows document.
