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/useThrottledRefHistory.md

@@ -0,0 +1,47 @@
+---
+category: State
+related: useDebouncedRefHistory, useRefHistory
+---
+
+# useThrottledRefHistory
+
+Shorthand for `useRefHistory` with throttled filter.
+
+## Usage
+
+This function takes the first snapshot right after the counter's value was changed and the second with a delay of 1000ms.
+
+```ts
+import { useThrottledRefHistory } from '@vueuse/core'
+import { shallowRef } from 'vue'
+
+const counter = shallowRef(0)
+const { history, undo, redo } = useThrottledRefHistory(counter, { deep: true, throttle: 1000 })
+```
+
+## Type Declarations
+
+```ts
+export type UseThrottledRefHistoryOptions<Raw, Serialized = Raw> = Omit<
+  UseRefHistoryOptions<Raw, Serialized>,
+  "eventFilter"
+> & {
+  throttle?: MaybeRef<number>
+  trailing?: boolean
+}
+export type UseThrottledRefHistoryReturn<
+  Raw,
+  Serialized = Raw,
+> = UseRefHistoryReturn<Raw, Serialized>
+/**
+ * Shorthand for [useRefHistory](https://vueuse.org/useRefHistory) with throttled filter.
+ *
+ * @see https://vueuse.org/useThrottledRefHistory
+ * @param source
+ * @param options
+ */
+export declare function useThrottledRefHistory<Raw, Serialized = Raw>(
+  source: Ref<Raw>,
+  options?: UseThrottledRefHistoryOptions<Raw, Serialized>,
+): UseThrottledRefHistoryReturn<Raw, Serialized>
+```