fix issues

apps/website/lib/command-models/auth/SignupCommandModel.test.ts

@@ -0,0 +1,8 @@
+import { describe, it, expect } from 'vitest';
+import { SignupCommandModel } from './SignupCommandModel';
+
+describe('SignupCommandModel', () => {
+  it('should be defined', () => {
+    expect(SignupCommandModel).toBeDefined();
+  });
+});