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/vitepress/references/core-markdown.md

@@ -0,0 +1,277 @@
+---
+name: vitepress-markdown
+description: Markdown extensions including frontmatter, custom containers, tables, anchors, and file includes
+---
+
+# Markdown Extensions
+
+VitePress extends standard markdown with additional features for documentation.
+
+## Frontmatter
+
+YAML metadata at the top of markdown files:
+
+```md
+---
+title: Page Title
+description: Page description for SEO
+layout: doc
+outline: [2, 3]
+---
+
+# Content starts here
+```
+
+Access frontmatter in templates:
+
+```md
+# {{ $frontmatter.title }}
+```
+
+Or in script:
+
+```vue
+<script setup>
+import { useData } from 'vitepress'
+const { frontmatter } = useData()
+</script>
+```
+
+## Custom Containers
+
+Styled callout blocks:
+
+```md
+::: info
+This is an info box.
+:::
+
+::: tip
+This is a tip.
+:::
+
+::: warning
+This is a warning.
+:::
+
+::: danger
+This is a dangerous warning.
+:::
+
+::: details Click to expand
+Hidden content here.
+:::
+```
+
+Custom titles:
+
+```md
+::: danger STOP
+Do not proceed!
+:::
+
+::: details Click me {open}
+Open by default with {open} attribute.
+:::
+```
+
+## GitHub-flavored Alerts
+
+Alternative syntax using blockquotes:
+
+```md
+> [!NOTE]
+> Highlights information users should know.
+
+> [!TIP]
+> Optional information for success.
+
+> [!WARNING]
+> Critical content requiring attention.
+
+> [!CAUTION]
+> Negative potential consequences.
+```
+
+## Header Anchors
+
+Headers get automatic anchor links. Custom anchors:
+
+```md
+# My Heading {#custom-anchor}
+
+[Link to heading](#custom-anchor)
+```
+
+## Table of Contents
+
+Generate a TOC with:
+
+```md
+[[toc]]
+```
+
+## GitHub-Style Tables
+
+```md
+| Feature | Status |
+|---------|--------|
+| SSR     | ✅     |
+| HMR     | ✅     |
+```
+
+## Emoji
+
+Use shortcodes:
+
+```md
+:tada: :rocket: :100:
+```
+
+## File Includes
+
+Include content from other files:
+
+```md
+<!--@include: ./shared/header.md-->
+```
+
+With line ranges:
+
+```md
+<!--@include: ./code.md{3,10}-->  <!-- Lines 3-10 -->
+<!--@include: ./code.md{3,}-->   <!-- From line 3 -->
+<!--@include: ./code.md{,10}-->  <!-- Up to line 10 -->
+```
+
+With regions:
+
+```md
+<!-- In parts/basics.md -->
+<!-- #region usage -->
+Usage content here
+<!-- #endregion usage -->
+
+<!-- Include just that region -->
+<!--@include: ./parts/basics.md#usage-->
+```
+
+## Code Snippet Import
+
+Import code from files:
+
+```md
+<<< @/snippets/example.js
+```
+
+With line highlighting:
+
+```md
+<<< @/snippets/example.js{2,4-6}
+```
+
+With language override:
+
+```md
+<<< @/snippets/example.cs{1,2 c#:line-numbers}
+```
+
+Import specific region:
+
+```md
+<<< @/snippets/example.js#regionName{1,2}
+```
+
+## Code Groups
+
+Tab groups for code variants:
+
+````md
+::: code-group
+
+```js [config.js]
+export default { /* ... */ }
+```
+
+```ts [config.ts]
+export default defineConfig({ /* ... */ })
+```
+
+:::
+````
+
+Import files in code groups:
+
+```md
+::: code-group
+
+<<< @/snippets/config.js
+<<< @/snippets/config.ts
+
+:::
+```
+
+## Math Equations
+
+Requires setup:
+
+```bash
+npm add -D markdown-it-mathjax3@^4
+```
+
+```ts
+// .vitepress/config.ts
+export default {
+  markdown: {
+    math: true
+  }
+}
+```
+
+Then use LaTeX:
+
+```md
+Inline: $E = mc^2$
+
+Block:
+$$
+\frac{-b \pm \sqrt{b^2-4ac}}{2a}
+$$
+```
+
+## Image Lazy Loading
+
+```ts
+export default {
+  markdown: {
+    image: {
+      lazyLoading: true
+    }
+  }
+}
+```
+
+## Raw Container
+
+Prevent VitePress style conflicts:
+
+```md
+::: raw
+<CustomComponent />
+:::
+```
+
+## Key Points
+
+- Frontmatter supports YAML or JSON format
+- Custom containers support info, tip, warning, danger, details
+- `[[toc]]` generates table of contents
+- `@` in imports refers to source root (or `srcDir` if configured)
+- Code groups create tabbed code blocks
+- Math support requires markdown-it-mathjax3 package
+
+<!--
+Source references:
+- https://vitepress.dev/guide/markdown
+- https://vitepress.dev/guide/frontmatter
+-->