feat(baoyu-image-cards): add image card series skill migrated from baoyu-xhs-images

Rename baoyu-xhs-images to baoyu-image-cards to decouple from Xiaohongshu platform.
Deprecate baoyu-xhs-images with migration notice pointing to baoyu-image-cards.

skills/baoyu-image-cards/references/presets/cute.md

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+---
+name: cute
+category: sweet
+---
+
+# Cute Style
+
+Sweet, adorable, girly - classic Xiaohongshu aesthetic.
+
+## Element Combination
+
+```yaml
+canvas:
+  ratio: portrait-3-4
+  grid: single | dual | quad
+
+image_effects:
+  cutout: soft
+  stroke: white-solid | colored-solid
+  filter: clear-glow | cream-skin
+
+typography:
+  decorated: bubble | highlight
+  tags: pill | bubble
+  direction: horizontal
+
+decorations:
+  emphasis: star-burst | hearts
+  background: solid-pastel | gradient-linear
+  doodles: hearts | stars-sparkles | flowers
+  frames: polaroid | tape-corners
+```
+
+## Color Palette
+
+| Role | Colors | Hex |
+|------|--------|-----|
+| Primary | Pink, peach, mint, lavender | #FED7E2, #FEEBC8, #C6F6D5, #E9D8FD |
+| Background | Cream, soft pink | #FFFAF0, #FFF5F7 |
+| Accents | Hot pink, coral | #FF69B4, #FF6B6B |
+
+## Visual Elements
+
+- Hearts, stars, sparkles, cute faces
+- Ribbon decorations, sticker-style
+- Cute stickers, emoji icons
+- Soft, rounded shapes
+
+## Typography
+
+- Rounded, bubbly hand lettering
+- Soft shadows, playful decorations
+- Pink/pastel color accents on text
+
+## Best Layout Pairings
+
+| Layout | Compatibility | Use Case |
+|--------|---------------|----------|
+| sparse | ✓✓ | Covers, emotional impact |
+| balanced | ✓✓ | Standard cute content |
+| dense | ✓ | Cute knowledge cards |
+| list | ✓✓ | Checklists, cute rankings |
+| comparison | ✓ | Before/after transformations |
+| flow | ✓ | Cute step guides |
+
+## Best For
+
+- Lifestyle content
+- Beauty and skincare
+- Fashion and style
+- Daily tips and hacks
+- Personal shares