feat(ui): migrate routes and app shell to controller-driven state

WebApp/src/routes/+layout.svelte

@@ -2,6 +2,7 @@
 	import './layout.css';
 	import { onMount } from 'svelte';
 	import favicon from '$lib/assets/favicon.svg';
+	import { appController } from '$lib/app/controller';
 
 	let { children } = $props();
 
@@ -9,13 +10,10 @@
 		const bodyClasses = ['h-screen', 'bg-[#0a0a0c]', 'text-gray-200', 'overflow-hidden', 'flex'];
 		document.body.classList.add(...bodyClasses);
 		document.documentElement.dataset.theme = 'black';
-		const simWindow = window as Window & { __mobileSimLoaded?: boolean };
-		if (!simWindow.__mobileSimLoaded) {
-			simWindow.__mobileSimLoaded = true;
-			void import('$lib/sim/mobile-sim.js');
-		}
+		void appController.init();
 
 		return () => {
+			void appController.destroy();
 			document.body.classList.remove(...bodyClasses);
 		};
 	});