fix(app): stabilize auth bootstrap and direct backend integration

WebApp/vite.config.ts

@@ -4,6 +4,7 @@ import tailwindcss from '@tailwindcss/vite';
 import { sveltekit } from '@sveltejs/kit/vite';
 
 const backendTarget = process.env.BACKEND_URL ?? 'http://localhost:3000';
+const enableProxy = process.env.USE_VITE_PROXY === 'true';
 
 const proxiedPaths = [
 	'/api',
@@ -31,7 +32,7 @@ const proxy = Object.fromEntries(
 export default defineConfig({
 	plugins: [tailwindcss(), sveltekit()],
 	server: {
-		proxy
+		proxy: enableProxy ? proxy : undefined
 	},
 	test: {
 		expect: { requireAssertions: true },