2a841df5ac
- Headers keep enlarged font size on active line (# marker shown in subtle gray) - Unordered list "-" rendered as "•" bullet widget - Clickable checkbox widgets for "- [ ]" / "- [x]" task lists - Nested list vertical guide lines for indented items - Improved typography: 15px base, 1.7 line-height, spacious 40px padding - Softer active line highlight, thicker cursor - Mock data enriched with checkboxes and nested lists for testing Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>