MarkdownPreviewEnhanced 0.2.1
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- feat: click a Mermaid diagram to enlarge it (drag to pan, scroll wheel to zoom, Esc to close)
- feat: dark mode re-renders Mermaid with the dark theme so diagrams stay readable
- fix: zoom resizes the SVG instead of CSS scale, so flowcharts stay sharp
- docs: document dark mode, Mermaid zoom, and scroll sync in the README
