Function autotype_request_get_credentials 

pub async fn autotype_request_get_credentials(
    ipc_client: &JsIpcClient,
    app: AutotypeRunningApp,
    abort_signal: Option<AbortSignal>,
) -> Result<AutotypeGetCredentialsResponse, RequestError>

Sends an AutotypeGetCredentialsRequest to the desktop render process, asking for the credentials to autotype into the focused app. The response’s credentials is empty when no vault item matches.

The response doesn’t identify the app it’s for. Keep the focused app’s identity from before sending the request, and confirm that app is still focused before typing. If it isn’t, the user has switched apps, and nothing should be typed.

The render process must have called registerAutotypeRenderHandlers first. Otherwise the request fails (for example, with a “no handler found” error) or waits until abort_signal fires.

There is no built-in timeout, so always pass abort_signal (for example AbortSignal.timeout(ms)). Without one, the request never completes if the render process doesn’t respond.