Fix CI: resolve eslint warning and mock trackUser in tests

Author: riddhima25bet10005-a11y

app/page.test.tsx

@@ -29,6 +29,10 @@ vi.mock('next/link', () => ({
   ),
 }));
 
+vi.mock('@/utils/tracking', () => ({
+  trackUser: vi.fn(),
+}));
+
 // Mock GSAP so FeatureCards don't break in JSDOM
 vi.mock('gsap', () => {
   const tween = { kill: vi.fn() };

app/page.tsx

@@ -1,6 +1,5 @@
 'use client';
 import { trackUser } from '@/utils/tracking';
-import InteractiveViewer from '@/components/InteractiveViewer';
 import Link from 'next/link';
 import { useRef, useState, useEffect } from 'react';
 import { AnimatePresence, motion } from 'framer-motion';