Function createMediaService

createMediaService(
options?: MediaServiceOptions,
): ServiceHandler & { destroy(): void }
Create a media NAP service handler with navigator.mediaSession integration.

Implements the 5 napplet->shell media.* request types defined in @napplet/nap/media. Only media.session.create produces a reply envelope (media.session.create.result) — the remaining four (session.update, session.destroy, state, capabilities) are fire-and-forget per the NAP spec.

Unknown media.* actions produce a <type>.error envelope so napplets are never left hanging on a malformed request.
Parameters
- options: MediaServiceOptions = {}
  Optional host callbacks for session lifecycle + state, plus mediaSessionTarget and documentTarget for test injection, and an optional hostBridge for native-OS media backend delegation.
Returns ServiceHandler & { destroy(): void }
A ServiceHandler (with destroy()) to register with the runtime
Example
```
import { createMediaService } from '@kehto/services';

const media = createMediaService();
runtime.registerService('media', media);
// Later, on shell teardown:
media.destroy();
```
- Defined in packages/services/src/media-service.ts:574