👍 Updates app unit test suite

app/package.json

@@ -11,7 +11,7 @@
 		"build:mock_web": "vite build --mode mock_web",
 		"build:web": "vite build --mode web",
 		"preview": "vite preview",
-		"test": "vitest",
+		"test": "vitest --environment jsdom",
 		"check": "svelte-check --tsconfig ./tsconfig.json",
 		"format": "prettier --plugin-search-dir . --write ."
 	},
@@ -24,6 +24,7 @@
 		"autoprefixer": "^10.4.17",
 		"cross-env": "^7.0.3",
 		"husky": "^9.0.7",
+		"jsdom": "^24.0.0",
 		"lint-staged": "^15.2.0",
 		"postcss": "^8.4.33",
 		"prettier": "3.2.4",