Sort classes using the same algorithm as prettier-plugin-tailwindcss,
configured for Tailwind v4 (reads src/app.css for theme).
Also sorts class strings inside twMerge() and tv() calls.
Eliminates 2 nested ternaries that conflicted with the formatter
(oxfmt strips parentheses that the lint rule requires).
- sceneNodeToJsx() in @open-pencil/core: converts SceneNode subtree to JSX
- CodePanel.vue with Prism.js highlighting, line numbers, copy button
- Third tab in properties panel: Design | Code | AI
- 14 new tests covering shapes, text, layout, effects, multi-selection