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/pinia/references/advanced-nuxt.md

@@ -0,0 +1,119 @@
+---
+name: nuxt-integration
+description: Using Pinia with Nuxt - auto-imports, SSR, and best practices
+---
+
+# Nuxt Integration
+
+Pinia works seamlessly with Nuxt 3/4, handling SSR, serialization, and XSS protection automatically.
+
+## Installation
+
+```bash
+npx nuxi@latest module add pinia
+```
+
+This installs both `@pinia/nuxt` and `pinia`. If `pinia` isn't installed, add it manually.
+
+> **npm users:** If you get `ERESOLVE unable to resolve dependency tree`, add to `package.json`:
+> ```json
+> "overrides": { "vue": "latest" }
+> ```
+
+## Configuration
+
+```ts
+// nuxt.config.ts
+export default defineNuxtConfig({
+  modules: ['@pinia/nuxt'],
+})
+```
+
+## Auto Imports
+
+These are automatically available:
+- `usePinia()` - get pinia instance
+- `defineStore()` - define stores
+- `storeToRefs()` - extract reactive refs
+- `acceptHMRUpdate()` - HMR support
+
+**All stores in `app/stores/` (Nuxt 4) or `stores/` are auto-imported.**
+
+### Custom Store Directories
+
+```ts
+// nuxt.config.ts
+export default defineNuxtConfig({
+  modules: ['@pinia/nuxt'],
+  pinia: {
+    storesDirs: ['./stores/**', './custom-folder/stores/**'],
+  },
+})
+```
+
+## Fetching Data in Pages
+
+Use `callOnce()` for SSR-friendly data fetching:
+
+```vue
+<script setup>
+const store = useStore()
+
+// Run once, data persists across navigations
+await callOnce('user', () => store.fetchUser())
+</script>
+```
+
+### Refetch on Navigation
+
+```vue
+<script setup>
+const store = useStore()
+
+// Refetch on every navigation (like useFetch)
+await callOnce('user', () => store.fetchUser(), { mode: 'navigation' })
+</script>
+```
+
+## Using Stores Outside Components
+
+In navigation guards, middlewares, or other stores, pass the `pinia` instance:
+
+```ts
+// middleware/auth.ts
+export default defineNuxtRouteMiddleware((to) => {
+  const nuxtApp = useNuxtApp()
+  const store = useStore(nuxtApp.$pinia)
+
+  if (to.meta.requiresAuth && !store.isLoggedIn) {
+    return navigateTo('/login')
+  }
+})
+```
+
+Most of the time, you don't need this - just use stores in components or other injection-aware contexts.
+
+## Pinia Plugins with Nuxt
+
+Create a Nuxt plugin:
+
+```ts
+// plugins/myPiniaPlugin.ts
+import { PiniaPluginContext } from 'pinia'
+
+function MyPiniaPlugin({ store }: PiniaPluginContext) {
+  store.$subscribe((mutation) => {
+    console.log(`[🍍 ${mutation.storeId}]: ${mutation.type}`)
+  })
+  return { creationTime: new Date() }
+}
+
+export default defineNuxtPlugin(({ $pinia }) => {
+  $pinia.use(MyPiniaPlugin)
+})
+```
+
+<!--
+Source references:
+- https://pinia.vuejs.org/ssr/nuxt.html
+-->