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/provideLocal.md

@@ -0,0 +1,37 @@
+---
+category: State
+---
+
+# provideLocal
+
+Extended `provide` with ability to call `injectLocal` to obtain the value in the same component.
+
+## Usage
+
+```vue
+<script setup>
+import { injectLocal, provideLocal } from '@vueuse/core'
+
+provideLocal('MyInjectionKey', 1)
+const injectedValue = injectLocal('MyInjectionKey') // injectedValue === 1
+</script>
+```
+
+## Type Declarations
+
+```ts
+export type ProvideLocalReturn = void
+/**
+ * On the basis of `provide`, it is allowed to directly call inject to obtain the value after call provide in the same component.
+ *
+ * @example
+ * ```ts
+ * provideLocal('MyInjectionKey', 1)
+ * const injectedValue = injectLocal('MyInjectionKey') // injectedValue === 1
+ * ```
+ */
+export declare function provideLocal<T, K = LocalProvidedKey<T>>(
+  key: K,
+  value: K extends InjectionKey<infer V> ? V : T,
+): ProvideLocalReturn
+```