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/code-import-snippet.md

@@ -0,0 +1,55 @@
+---
+name: import-snippet
+description: Import code from external files into slides with optional region selection
+---
+
+# Import Code Snippets
+
+Import code from external files into slides.
+
+## Basic Syntax
+
+```md
+<<< @/snippets/snippet.js
+```
+
+`@` = package root directory. Recommended: place snippets in `@/snippets/`.
+
+## Import Region
+
+Use VS Code region syntax:
+
+```md
+<<< @/snippets/snippet.js#region-name
+```
+
+## Specify Language
+
+```md
+<<< @/snippets/snippet.js ts
+```
+
+## With Features
+
+Combine with line highlighting, Monaco editor:
+
+```md
+<<< @/snippets/snippet.js {2,3|5}{lines:true}
+<<< @/snippets/snippet.js ts {monaco}{height:200px}
+```
+
+## Placeholder
+
+Use `{*}` for line highlighting placeholder:
+
+```md
+<<< @/snippets/snippet.js {*}{lines:true}
+```
+
+## Monaco Write
+
+Link editor to file for live editing:
+
+```md
+<<< ./some-file.ts {monaco-write}
+```