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/useSwipe.md

@@ -0,0 +1,75 @@
+---
+category: Sensors
+---
+
+# useSwipe
+
+Reactive swipe detection based on [`TouchEvents`](https://developer.mozilla.org/en-US/docs/Web/API/TouchEvent).
+
+## Usage
+
+```vue
+<script setup lang="ts">
+import { useSwipe } from '@vueuse/core'
+import { useTemplateRef } from 'vue'
+
+const el = useTemplateRef('el')
+const { isSwiping, direction } = useSwipe(el)
+</script>
+
+<template>
+  <div ref="el">
+    Swipe here
+  </div>
+</template>
+```
+
+## Type Declarations
+
+```ts
+export type UseSwipeDirection = "up" | "down" | "left" | "right" | "none"
+export interface UseSwipeOptions extends ConfigurableWindow {
+  /**
+   * Register events as passive
+   *
+   * @default true
+   */
+  passive?: boolean
+  /**
+   * @default 50
+   */
+  threshold?: number
+  /**
+   * Callback on swipe start
+   */
+  onSwipeStart?: (e: TouchEvent) => void
+  /**
+   * Callback on swipe moves
+   */
+  onSwipe?: (e: TouchEvent) => void
+  /**
+   * Callback on swipe ends
+   */
+  onSwipeEnd?: (e: TouchEvent, direction: UseSwipeDirection) => void
+}
+export interface UseSwipeReturn {
+  isSwiping: ShallowRef<boolean>
+  direction: ComputedRef<UseSwipeDirection>
+  coordsStart: Readonly<Position>
+  coordsEnd: Readonly<Position>
+  lengthX: ComputedRef<number>
+  lengthY: ComputedRef<number>
+  stop: () => void
+}
+/**
+ * Reactive swipe detection.
+ *
+ * @see https://vueuse.org/useSwipe
+ * @param target
+ * @param options
+ */
+export declare function useSwipe(
+  target: MaybeRefOrGetter<EventTarget | null | undefined>,
+  options?: UseSwipeOptions,
+): UseSwipeReturn
+```