add changelog entry for importable waitUntil

src/content/changelog/workers/2025-08-08-add-waituntil-cloudflare-workers.mdx

@@ -0,0 +1,57 @@
+---
+title: Directly import `waitUntil` in Workers for easily spawning background tasks
+description: You can now import `waitUntil` from `cloudflare:workers` to extend execution of background tasks without requiring the request context
+products:
+  - workers
+date: 2025-08-08
+---
+
+You can now import [`waitUntil`](/workers/runtime-apis/context/#waituntil) from `cloudflare:workers` to extend your Worker's execution beyond the request lifecycle from anywhere in your code.
+
+Previously, `waitUntil` could only be accessed through the [execution context](/workers/runtime-apis/context/) (`ctx`) parameter passed to your Worker's handler functions. This meant that if you needed to schedule background tasks from deeply nested functions or utility modules, you had to pass the `ctx` object through multiple function calls to access `waitUntil`.
+
+Now, you can import `waitUntil` directly and use it anywhere in your Worker without needing to pass `ctx` as a parameter:
+
+```js
+import { waitUntil } from "cloudflare:workers";
+
+export function trackAnalytics(eventData) {
+	const analyticsPromise = fetch("https://analytics.example.com/track", {
+		method: "POST",
+		body: JSON.stringify(eventData),
+	});
+
+	// Extend execution to ensure analytics tracking completes
+	waitUntil(analyticsPromise);
+}
+```
+
+This is particularly useful when you want to:
+
+- Schedule background tasks from utility functions or modules
+- Extend execution for analytics, logging, or cleanup operations
+- Avoid passing the execution context through multiple layers of function calls
+
+```js
+import { waitUntil } from "cloudflare:workers";
+
+export default {
+	async fetch(request, env, ctx) {
+		// Background task that should complete even after response is sent
+		cleanupTempData(env.KV_NAMESPACE);
+		return new Response("Hello, World!");
+	}
+};
+
+function cleanupTempData(kvNamespace) {
+	// This function can now use waitUntil without needing ctx
+	const deletePromise = kvNamespace.delete("temp-key");
+	waitUntil(deletePromise);
+}
+```
+
+:::note
+The imported `waitUntil` function works the same way as [`ctx.waitUntil()`](/workers/runtime-apis/context/#waituntil). It extends your Worker's execution to wait for the provided promise to settle, but does not block the response from being sent to the client.
+:::
+
+For more information, see the [`waitUntil` documentation](/workers/runtime-apis/context/#waituntil).