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/vueuse-functions/references/refDefault.md

@@ -0,0 +1,36 @@
+---
+category: Reactivity
+---
+
+# refDefault
+
+Apply default value to a ref.
+
+## Usage
+
+```ts
+import { refDefault, useStorage } from '@vueuse/core'
+
+const raw = useStorage('key')
+const state = refDefault(raw, 'default')
+
+raw.value = 'hello'
+console.log(state.value) // hello
+
+raw.value = undefined
+console.log(state.value) // default
+```
+
+## Type Declarations
+
+```ts
+/**
+ * Apply default value to a ref.
+ *
+ * @__NO_SIDE_EFFECTS__
+ */
+export declare function refDefault<T>(
+  source: Ref<T | undefined | null>,
+  defaultValue: T,
+): Ref<T>
+```