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/useDisplayMedia.md

@@ -0,0 +1,71 @@
+---
+category: Sensors
+related: useUserMedia
+---
+
+# useDisplayMedia
+
+Reactive [`mediaDevices.getDisplayMedia`](https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getDisplayMedia) streaming.
+
+## Usage
+
+```vue
+<script setup lang="ts">
+import { useDisplayMedia } from '@vueuse/core'
+import { useTemplateRef } from 'vue'
+
+const { stream, start } = useDisplayMedia()
+
+// start streaming
+start()
+
+const videoRef = useTemplateRef('video')
+watchEffect(() => {
+  // preview on a video element
+  videoRef.value.srcObject = stream.value
+})
+</script>
+
+<template>
+  <video ref="video" />
+</template>
+```
+
+## Type Declarations
+
+```ts
+export interface UseDisplayMediaOptions extends ConfigurableNavigator {
+  /**
+   * If the stream is enabled
+   * @default false
+   */
+  enabled?: MaybeRef<boolean>
+  /**
+   * If the stream video media constraints
+   */
+  video?: boolean | MediaTrackConstraints | undefined
+  /**
+   * If the stream audio media constraints
+   */
+  audio?: boolean | MediaTrackConstraints | undefined
+}
+/**
+ * Reactive `mediaDevices.getDisplayMedia` streaming
+ *
+ * @see https://vueuse.org/useDisplayMedia
+ * @param options
+ */
+export declare function useDisplayMedia(options?: UseDisplayMediaOptions): {
+  isSupported: ComputedRef<boolean>
+  stream: ShallowRef<MediaStream | undefined, MediaStream | undefined>
+  start: () => Promise<MediaStream | undefined>
+  stop: () => void
+  enabled:
+    | Ref<boolean, boolean>
+    | ShallowRef<boolean, boolean>
+    | WritableComputedRef<boolean, boolean>
+    | ShallowRef<true, true>
+    | ShallowRef<false, false>
+}
+export type UseDisplayMediaReturn = ReturnType<typeof useDisplayMedia>
+```