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/editor-prettier.md

@@ -0,0 +1,40 @@
+---
+name: prettier-plugin
+description: Format Slidev markdown files correctly
+---
+
+# Prettier Plugin
+
+Format Slidev markdown files correctly.
+
+## Installation
+
+```bash
+pnpm i -D prettier prettier-plugin-slidev
+```
+
+## Configuration
+
+Create/modify `.prettierrc`:
+
+```json
+{
+  "overrides": [
+    {
+      "files": ["slides.md", "pages/*.md"],
+      "options": {
+        "parser": "slidev",
+        "plugins": ["prettier-plugin-slidev"]
+      }
+    }
+  ]
+}
+```
+
+## Why Needed
+
+Slidev's syntax (frontmatter, code blocks) may conflict with default Markdown formatting. This plugin understands Slidev-specific syntax.
+
+## Note
+
+Must specify files via `overrides` since Slidev and regular Markdown share `.md` extension.