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/watchAtMost.md

@@ -0,0 +1,55 @@
+---
+category: Watch
+---
+
+# watchAtMost
+
+`watch` with the number of times triggered.
+
+## Usage
+
+Similar to `watch` with an extra option `count` which set up the number of times the callback function is triggered. After the count is reached, the watch will be stopped automatically.
+
+```ts
+import { watchAtMost } from '@vueuse/core'
+
+watchAtMost(
+  source,
+  () => { console.log('trigger!') }, // triggered it at most 3 times
+  {
+    count: 3, // the number of times triggered
+  },
+)
+```
+
+## Type Declarations
+
+```ts
+export interface WatchAtMostOptions<
+  Immediate,
+> extends WatchWithFilterOptions<Immediate> {
+  count: MaybeRefOrGetter<number>
+}
+export interface WatchAtMostReturn {
+  stop: WatchStopHandle
+  pause: () => void
+  resume: () => void
+  count: ShallowRef<number>
+}
+export declare function watchAtMost<
+  T extends Readonly<MultiWatchSources>,
+  Immediate extends Readonly<boolean> = false,
+>(
+  sources: [...T],
+  cb: WatchCallback<MapSources<T>, MapOldSources<T, Immediate>>,
+  options: WatchAtMostOptions<Immediate>,
+): WatchAtMostReturn
+export declare function watchAtMost<
+  T,
+  Immediate extends Readonly<boolean> = false,
+>(
+  sources: WatchSource<T>,
+  cb: WatchCallback<T, Immediate extends true ? T | undefined : T>,
+  options: WatchAtMostOptions<Immediate>,
+): WatchAtMostReturn
+```