make preview useable without client list, to reuse in create link view

src/main.js

@@ -2,7 +2,7 @@ import {xhrRequest} from "./utils/xhr.js";
 import {RootViewModel} from "./RootViewModel.js";
 import {RootView} from "./RootView.js";
 import {Preferences} from "./Preferences.js";
-import {guessApplicablePlatforms} from "./client/Platform.js";
+import {guessApplicablePlatforms} from "./Platform.js";
 
 export async function main(container) {
 	const vm = new RootViewModel({
@@ -10,6 +10,7 @@ export async function main(container) {
 		openLink: url => location.href = url,
 		platforms: guessApplicablePlatforms(navigator.userAgent),
 		preferences: new Preferences(window.localStorage),
+		origin: location.origin,
 	});
 	vm.updateHash(location.hash);
 	window.__rootvm = vm;