fix: remove unused vi import from WelcomeGuide tests

https://claude.ai/code/session_01TY5YfV9R31MfrJDtovKqmi

Author: claude

tests/ts/components/WelcomeGuide.test.tsx

@@ -1,4 +1,4 @@
-import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { describe, it, expect, beforeEach } from 'vitest';
 import { render, screen, within } from '@testing-library/react';
 import userEvent from '@testing-library/user-event';
 import { WelcomeGuide, WELCOME_STEPS } from '../../../apps/desktop/src/components/WelcomeGuide';