docs: add advanced skills for Vitest, Pinia, and Vue built-ins

Add comprehensive reference documentation for:
- Vitest: environments, projects/workspaces, type testing, vi utilities
- Pinia: HMR, Nuxt integration, SSR setup
- Vue: built-in components (Transition, Teleport, Suspense, KeepAlive) and advanced directives

.agents/skills/vueuse-functions/references/useDevicesList.md

@@ -0,0 +1,89 @@
+---
+category: Sensors
+---
+
+# useDevicesList
+
+Reactive [enumerateDevices](https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/enumerateDevices) listing available input/output devices.
+
+## Usage
+
+```ts
+import { useDevicesList } from '@vueuse/core'
+
+const {
+  devices,
+  videoInputs: cameras,
+  audioInputs: microphones,
+  audioOutputs: speakers,
+} = useDevicesList()
+```
+
+## Requesting Permissions
+
+To request permissions, use the `ensurePermissions` method.
+
+```ts
+import { useDevicesList } from '@vueuse/core'
+// ---cut---
+const {
+  ensurePermissions,
+  permissionGranted,
+} = useDevicesList()
+
+await ensurePermissions()
+console.log(permissionsGranted.value)
+```
+
+# Component
+
+```vue
+<template>
+  <UseDevicesList v-slot="{ videoInputs, audioInputs, audioOutputs }">
+    Cameras: {{ videoInputs }}
+    Microphones: {{ audioInputs }}
+    Speakers: {{ audioOutputs }}
+  </UseDevicesList>
+</template>
+```
+
+## Type Declarations
+
+```ts
+export interface UseDevicesListOptions extends ConfigurableNavigator {
+  onUpdated?: (devices: MediaDeviceInfo[]) => void
+  /**
+   * Request for permissions immediately if it's not granted,
+   * otherwise label and deviceIds could be empty
+   *
+   * @default false
+   */
+  requestPermissions?: boolean
+  /**
+   * Request for types of media permissions
+   *
+   * @default { audio: true, video: true }
+   */
+  constraints?: MediaStreamConstraints
+}
+export interface UseDevicesListReturn extends Supportable {
+  /**
+   * All devices
+   */
+  devices: Ref<MediaDeviceInfo[]>
+  videoInputs: ComputedRef<MediaDeviceInfo[]>
+  audioInputs: ComputedRef<MediaDeviceInfo[]>
+  audioOutputs: ComputedRef<MediaDeviceInfo[]>
+  permissionGranted: ShallowRef<boolean>
+  ensurePermissions: () => Promise<boolean>
+}
+/**
+ * Reactive `enumerateDevices` listing available input/output devices
+ *
+ * @see https://vueuse.org/useDevicesList
+ * @param options
+ */
+export declare function useDevicesList(
+  options?: UseDevicesListOptions,
+): UseDevicesListReturn
+```