Add baoyu-skills package

baoyu-skills/skills/baoyu-cover-image/references/palettes/earth.md

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+# earth
+
+Natural, organic, grounded
+
+## Color Palette
+
+| Role | Color | Hex |
+|------|-------|-----|
+| Primary 1 | Forest Green | #276749 |
+| Primary 2 | Sage | #9AE6B4 |
+| Primary 3 | Earth Brown | #744210 |
+| Background | Sand Beige | #F5E6D3 |
+| Background Alt | Sky Blue | #E0F2FE |
+| Accent 1 | Sunset Orange | #ED8936 |
+| Accent 2 | Water Blue | #63B3ED |
+
+## Decorative Hints
+
+- Leaves, trees, mountains, natural forms
+- Sun, clouds, organic flowing lines
+- Botanical illustrations
+- Earthy textures and natural patterns
+
+## Semantic Constraint
+
+Do NOT render color names, hex codes, or role labels as visible text in the image.
+
+## Best For
+
+Nature, wellness, eco, organic, travel, sustainability, outdoor topics, slow living