feat: Complete fleet — 94 skills across 10+ domains

Pulled ALL skills from 15 source repositories:
- anthropics/skills: 16 (docs, design, MCP, testing)
- obra/superpowers: 14 (TDD, debugging, agents, planning)
- coreyhaines31/marketingskills: 25 (marketing, CRO, SEO, growth)
- better-auth/skills: 5 (auth patterns)
- vercel-labs/agent-skills: 5 (React, design, Vercel)
- antfu/skills: 16 (Vue, Vite, Vitest, pnpm, Turborepo)
- Plus 13 individual skills from various repos

Mosaic Stack is not limited to coding — the Orchestrator and
subagents serve coding, business, design, marketing, writing,
logistics, analysis, and more.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

skills/slidev/references/style-scoped.md

@@ -0,0 +1,50 @@
+---
+name: scoped
+description: Slide-scoped CSS styles
+---
+
+# Slide Scope Styles
+
+Define CSS that applies only to the current slide.
+
+## Usage
+
+```md
+# This is Red
+
+<style>
+h1 {
+  color: red;
+}
+</style>
+
+---
+
+# Other slides are not affected
+```
+
+## Scoped by Default
+
+All `<style>` tags in slides are automatically scoped.
+
+Child combinators (`.a > .b`) don't work as expected due to scoping.
+
+## Nested CSS with UnoCSS
+
+```md
+# Slidev
+
+> Hello **world**
+
+<style>
+blockquote {
+  strong {
+    --uno: 'text-teal-500 dark:text-teal-400';
+  }
+}
+</style>
+```
+
+## Global Styles
+
+For global styles, use `styles/index.css` in your project.