- Add @tiptap/suggestion-based slash command menu with 12 commands
- Add TableKit for table support (3x3 with header)
- Add Image extension with base64 support
- Add Link extension with autolink and paste detection
- Add TaskList/TaskItem extensions for checklists
- Upgrade all tiptap packages from 3.23.6 to 3.25.0
- Add CSS styles for all new features including dark theme
