add new skill baoyu-comic

skills/baoyu-xhs-images/references/layouts/comparison.md

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+# comparison
+
+Side-by-side contrast layout
+
+## Information Density
+
+- 2 main sections with 2-4 points each
+- Whitespace: 30-40% of canvas
+
+## Structure
+
+- Left vs Right layout
+- Before/After, Pros/Cons format
+- Clear divider between sections
+
+## Text Elements
+
+- Title + left label + right label + mirrored points
+
+## Visual Balance
+
+- Symmetrical left/right
+- Clear visual contrast
+
+## Best For
+
+Comparisons, transformations, decision helpers, 对比图
+
+## Best Style Pairings
+
+bold (dramatic contrast), tech (data comparison), warm (before/after stories)