fix(02-01): restore TestimonialsSection in page.tsx section order

- Add TestimonialsSection import and render between HeroSection and ListingsPlaceholder
- Correct section order: SiteNav → HeroSection → TestimonialsSection → ListingsPlaceholder → ContactSection → SiteFooter

teressa-copeland-homes/src/app/page.tsx

@@ -1,5 +1,6 @@
 import SiteNav from './_components/SiteNav';
 import HeroSection from './_components/HeroSection';
+import TestimonialsSection from './_components/TestimonialsSection';
 import ListingsPlaceholder from './_components/ListingsPlaceholder';
 import { ContactSection } from './_components/ContactSection';
 import SiteFooter from './_components/SiteFooter';
@@ -10,7 +11,7 @@ export default function HomePage() {
       <SiteNav />
       <main>
         <HeroSection />
-        {/* TestimonialsSection — added in Task 2 */}
+        <TestimonialsSection />
         <ListingsPlaceholder />
         <ContactSection />
       </main>