Refactor code structure for improved readability and maintainability

backend/tests/services/fsScanner.archiveEntries.spec.ts

@@ -9,7 +9,9 @@ vi.mock('../../src/services/archiveReader', () => ({ listArchiveEntries: vi.fn()
 import scanDirectory from '../../src/services/fsScanner';
 import { listArchiveEntries } from '../../src/services/archiveReader';
 
-afterEach(() => vi.restoreAllMocks());
+afterEach(() => {
+  vi.restoreAllMocks();
+});
 
 it('expone entradas internas de archivos como items virtuales', async () => {
   const tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'fsScanner-test-'));
@@ -26,11 +28,13 @@ it('expone entradas internas de archivos como items virtuales', async () => {
   const found = results.find((r: any) => r.path === expectedPath);
 
   expect(found).toBeDefined();
-  expect(found.isArchiveEntry).toBe(true);
-  expect(found.containerPath).toBe(collectionFile);
-  expect(found.entryPath).toBe('inner/rom1.bin');
-  expect(found.filename).toBe('rom1.bin');
-  expect(found.format).toBe('bin');
+  if (found) {
+    expect(found.isArchiveEntry).toBe(true);
+    expect(found.containerPath).toBe(collectionFile);
+    expect(found.entryPath).toBe('inner/rom1.bin');
+    expect(found.filename).toBe('rom1.bin');
+    expect(found.format).toBe('bin');
+  }
 
   await fs.rm(tmpDir, { recursive: true, force: true });
 });