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/usePointerLock.md

@@ -0,0 +1,59 @@
+---
+category: Sensors
+---
+
+# usePointerLock
+
+Reactive [pointer lock](https://developer.mozilla.org/en-US/docs/Web/API/Pointer_Lock_API).
+
+## Basic Usage
+
+```ts
+import { usePointerLock } from '@vueuse/core'
+
+const {
+  isSupported,
+  lock,
+  unlock,
+  element,
+  triggerElement
+} = usePointerLock()
+```
+
+## Component Usage
+
+```vue
+<template>
+  <UsePointerLock v-slot="{ lock }">
+    <canvas />
+    <button @click="lock">
+      Lock Pointer on Canvas
+    </button>
+  </UsePointerLock>
+</template>
+```
+
+## Type Declarations
+
+```ts
+export interface UsePointerLockOptions extends ConfigurableDocument {}
+export interface UsePointerLockReturn extends Supportable {
+  element: ShallowRef<MaybeElement>
+  triggerElement: ShallowRef<MaybeElement>
+  lock: (e: MaybeElementRef | Event) => Promise<MaybeElement>
+  unlock: () => Promise<boolean>
+}
+/**
+ * Reactive pointer lock.
+ *
+ * @see https://vueuse.org/usePointerLock
+ * @param target
+ * @param options
+ *
+ * @__NO_SIDE_EFFECTS__
+ */
+export declare function usePointerLock(
+  target?: MaybeElementRef,
+  options?: UsePointerLockOptions,
+): UsePointerLockReturn
+```