feat: establish frontend foundation

src/test/setup.ts

@@ -0,0 +1,16 @@
+import "@testing-library/jest-dom/vitest";
+import "../shared/i18n";
+
+Object.defineProperty(window, "matchMedia", {
+	writable: true,
+	value: (query: string) => ({
+		matches: false,
+		media: query,
+		onchange: null,
+		addEventListener: () => {},
+		removeEventListener: () => {},
+		addListener: () => {},
+		removeListener: () => {},
+		dispatchEvent: () => false,
+	}),
+});