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/features-code-blocks.md

@@ -0,0 +1,243 @@
+---
+name: vitepress-code-blocks
+description: Syntax highlighting, line highlighting, colored diffs, focus, and line numbers
+---
+
+# Code Blocks
+
+VitePress uses Shiki for syntax highlighting with powerful code block features.
+
+## Syntax Highlighting
+
+Specify language after opening backticks:
+
+````md
+```js
+export default {
+  name: 'MyComponent'
+}
+```
+````
+
+Supports [all languages](https://shiki.style/languages) available in Shiki.
+
+## Line Highlighting
+
+Highlight specific lines:
+
+````md
+```js{4}
+export default {
+  data() {
+    return {
+      msg: 'Highlighted!'  // Line 4 highlighted
+    }
+  }
+}
+```
+````
+
+Multiple lines and ranges:
+
+````md
+```js{1,4,6-8}
+// Line 1 highlighted
+export default {
+  data() {
+    return {      // Line 4
+      msg: 'Hi',
+      foo: 'bar', // Lines 6-8
+      baz: 'qux'
+    }
+  }
+}
+```
+````
+
+Inline highlighting with comment:
+
+````md
+```js
+export default {
+  data() {
+    return {
+      msg: 'Highlighted!' // [!code highlight]
+    }
+  }
+}
+```
+````
+
+## Focus
+
+Blur other code and focus specific lines:
+
+````md
+```js
+export default {
+  data() {
+    return {
+      msg: 'Focused!' // [!code focus]
+    }
+  }
+}
+```
+````
+
+Focus multiple lines:
+
+```js
+// [!code focus:3]
+```
+
+## Colored Diffs
+
+Show additions and removals:
+
+````md
+```js
+export default {
+  data() {
+    return {
+      msg: 'Removed' // [!code --]
+      msg: 'Added'   // [!code ++]
+    }
+  }
+}
+```
+````
+
+## Errors and Warnings
+
+Color lines as errors or warnings:
+
+````md
+```js
+export default {
+  data() {
+    return {
+      msg: 'Error',   // [!code error]
+      msg: 'Warning'  // [!code warning]
+    }
+  }
+}
+```
+````
+
+## Line Numbers
+
+Enable globally:
+
+```ts
+// .vitepress/config.ts
+export default {
+  markdown: {
+    lineNumbers: true
+  }
+}
+```
+
+Per-block override:
+
+````md
+```ts:line-numbers
+// Line numbers enabled
+const a = 1
+```
+
+```ts:no-line-numbers
+// Line numbers disabled
+const b = 2
+```
+````
+
+Start from specific number:
+
+````md
+```ts:line-numbers=5
+// Starts at line 5
+const a = 1  // This is line 5
+const b = 2  // This is line 6
+```
+````
+
+## Code Groups
+
+Tabbed code blocks:
+
+````md
+::: code-group
+
+```js [JavaScript]
+export default { /* ... */ }
+```
+
+```ts [TypeScript]
+export default defineConfig({ /* ... */ })
+```
+
+:::
+````
+
+## Import Code Snippets
+
+From external files:
+
+```md
+<<< @/snippets/snippet.js
+```
+
+With highlighting:
+
+```md
+<<< @/snippets/snippet.js{2,4-6}
+```
+
+Specific region:
+
+```md
+<<< @/snippets/snippet.js#regionName{1,2}
+```
+
+With language and line numbers:
+
+```md
+<<< @/snippets/snippet.cs{1,2,4-6 c#:line-numbers}
+```
+
+In code groups:
+
+```md
+::: code-group
+
+<<< @/snippets/config.js [JavaScript]
+<<< @/snippets/config.ts [TypeScript]
+
+:::
+```
+
+## File Labels
+
+Add filename labels to code blocks:
+
+````md
+```js [vite.config.js]
+export default defineConfig({})
+```
+````
+
+## Key Points
+
+- Use `// [!code highlight]` for inline highlighting
+- Use `// [!code focus]` to focus with blur effect
+- Use `// [!code ++]` and `// [!code --]` for diffs
+- Use `// [!code error]` and `// [!code warning]` for status
+- `:line-numbers` and `:no-line-numbers` control line numbers per block
+- `@` in imports refers to source root
+- Code groups create tabbed interfaces
+
+<!--
+Source references:
+- https://vitepress.dev/guide/markdown#syntax-highlighting-in-code-blocks
+- https://vitepress.dev/guide/markdown#line-highlighting-in-code-blocks
+-->