feat: Font options for the UI in larger screens, for code and screen fonts display

src/test/setup.ts

@@ -0,0 +1,29 @@
+/**
+ * Test environment polyfills for Vitest running in `node` mode.
+ * Provides a minimal localStorage implementation with clear() to satisfy hooks.
+ */
+
+if (typeof globalThis.localStorage === 'undefined' || typeof globalThis.localStorage.clear !== 'function') {
+  const store = new Map<string, string>();
+
+  globalThis.localStorage = {
+    getItem(key: string) {
+      return store.has(key) ? store.get(key)! : null;
+    },
+    setItem(key: string, value: string) {
+      store.set(String(key), String(value));
+    },
+    removeItem(key: string) {
+      store.delete(key);
+    },
+    clear() {
+      store.clear();
+    },
+    key(index: number) {
+      return Array.from(store.keys())[index] ?? null;
+    },
+    get length() {
+      return store.size;
+    },
+  } as unknown as Storage;
+}