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/useScreenSafeArea.md

@@ -0,0 +1,60 @@
+---
+category: Browser
+---
+
+# useScreenSafeArea
+
+Reactive `env(safe-area-inset-*)`
+
+![image](https://webkit.org/wp-content/uploads/safe-areas-1.png)
+
+## Usage
+
+In order to make the page to be fully rendered in the screen, the additional attribute `viewport-fit=cover` within `viewport` meta tag must be set firstly, the viewport meta tag may look like this:
+
+```html
+<meta name="viewport" content="initial-scale=1, viewport-fit=cover" />
+```
+
+Then we could use `useScreenSafeArea` in the component as shown below:
+
+```ts
+import { useScreenSafeArea } from '@vueuse/core'
+
+const {
+  top,
+  right,
+  bottom,
+  left,
+} = useScreenSafeArea()
+```
+
+For further details, you may refer to this documentation: [Designing Websites for iPhone X](https://webkit.org/blog/7929/designing-websites-for-iphone-x/)
+
+## Component Usage
+
+```vue
+<template>
+  <UseScreenSafeArea top right bottom left>
+    content
+  </UseScreenSafeArea>
+</template>
+```
+
+## Type Declarations
+
+```ts
+/**
+ * Reactive `env(safe-area-inset-*)`
+ *
+ * @see https://vueuse.org/useScreenSafeArea
+ */
+export declare function useScreenSafeArea(): {
+  top: ShallowRef<string, string>
+  right: ShallowRef<string, string>
+  bottom: ShallowRef<string, string>
+  left: ShallowRef<string, string>
+  update: () => void
+}
+export type UseScreenSafeAreaReturn = ReturnType<typeof useScreenSafeArea>
+```