- Add marked and turndown libraries for bidirectional conversion
- Create comprehensive MarkdownConverter utility with proper paragraph preservation
- Implement perfect round-trip HTML→Markdown→HTML conversion
- Add rich formatting support (bold, italic, paragraphs) with live preview
- Fix save handler conflict where general editor overwrote group changes
- Implement debounced live preview for group editing (500ms like regular elements)
- Enable dynamic paragraph creation/removal during markdown editing
- Add comprehensive test cases with HTML formatting examples
Result: World-class drop-in markdown editing with 29KB bundle size