format: apply repo prettier (3.8.1) to the folded skills tree

963 markdown files reformatted with the repository's pinned prettier so
pnpm format:check covers the folded tree like every other repo file.

The formatter's embedded-language pass also normalized code fences
(TS semicolons, closed HTML tags in examples, lowercased CSS hex colors,
one renumbered list that skipped an index). Alphanumeric token deltas vs
the fold commit were audited file-by-file; all are formatter-equivalent
markup normalizations plus the four sanitized skills.

packages/mosaic/framework/skills/frontend-design/SKILL.md

@@ -11,6 +11,7 @@ The user provides frontend requirements: a component, page, application, or inte
 ## Design Thinking
 
 Before coding, understand the context and commit to a BOLD aesthetic direction:
+
 - **Purpose**: What problem does this interface solve? Who uses it?
 - **Tone**: Pick an extreme: brutally minimal, maximalist chaos, retro-futuristic, organic/natural, luxury/refined, playful/toy-like, editorial/magazine, brutalist/raw, art deco/geometric, soft/pastel, industrial/utilitarian, etc. There are so many flavors to choose from. Use these for inspiration but design one that is true to the aesthetic direction.
 - **Constraints**: Technical requirements (framework, performance, accessibility).
@@ -19,6 +20,7 @@ Before coding, understand the context and commit to a BOLD aesthetic direction:
 **CRITICAL**: Choose a clear conceptual direction and execute it with precision. Bold maximalism and refined minimalism both work - the key is intentionality, not intensity.
 
 Then implement working code (HTML/CSS/JS, React, Vue, etc.) that is:
+
 - Production-grade and functional
 - Visually striking and memorable
 - Cohesive with a clear aesthetic point-of-view
@@ -27,6 +29,7 @@ Then implement working code (HTML/CSS/JS, React, Vue, etc.) that is:
 ## Frontend Aesthetics Guidelines
 
 Focus on:
+
 - **Typography**: Choose fonts that are beautiful, unique, and interesting. Avoid generic fonts like Arial and Inter; opt instead for distinctive choices that elevate the frontend's aesthetics; unexpected, characterful font choices. Pair a distinctive display font with a refined body font.
 - **Color & Theme**: Commit to a cohesive aesthetic. Use CSS variables for consistency. Dominant colors with sharp accents outperform timid, evenly-distributed palettes.
 - **Motion**: Use animations for effects and micro-interactions. Prioritize CSS-only solutions for HTML. Use Motion library for React when available. Focus on high-impact moments: one well-orchestrated page load with staggered reveals (animation-delay) creates more delight than scattered micro-interactions. Use scroll-triggering and hover states that surprise.