feat(skills): add baoyu-infographic skill — 21 layouts × 21 styles

Port of baoyu-infographic from JimLiu/baoyu-skills (v1.56.1) adapted
for Hermes Agent's tool ecosystem.

Adaptations from upstream:
- Frontmatter: openclaw metadata → hermes metadata
- Usage: slash command syntax → natural language triggers
- Removed EXTEND.md config system (not part of Hermes infrastructure)
- AskUserQuestion → clarify tool (one question at a time)
- Image generation → image_generate tool
- Removed Windows-specific paths
- Simplified file operations to use Hermes file tools
- All 45 reference files (layouts, styles, templates) preserved intact

Attribution preserved per agreement with 宝玉 (Jim Liu):
- author, version, GitHub homepage URL in frontmatter

Co-authored-by: Jim Liu 宝玉 <junminliu@gmail.com>

skills/creative/baoyu-infographic/references/styles/ui-wireframe.md

@@ -0,0 +1,29 @@
+# ui-wireframe
+
+Grayscale interface mockup style
+
+## Color Palette
+
+- Primary: Grays - light (#E5E5E5), medium (#9CA3AF), dark (#374151)
+- Background: White (#FFFFFF), light gray
+- Accents: Blue for interactive (#3B82F6), red for emphasis
+
+## Visual Elements
+
+- Wireframe boxes and placeholders
+- X marks for image placeholders
+- Simple line icons
+- Grid-based layout
+- Annotation callouts
+- Redline specifications
+
+## Typography
+
+- System fonts
+- Placeholder "Lorem ipsum"
+- UI label style
+- Sans-serif throughout
+
+## Best For
+
+Product designs, UI explanations, app concepts, user flow diagrams