Merge version_4 into main

Merge version_4 into main

src/app/page.tsx

@@ -139,6 +139,7 @@ export default function LandingPage() {
         { id: "f2", title: "Can I share my progress?", content: "Yes, you can easily export and share your progress charts directly from the app." },
         { id: "f3", title: "What device do I need?", content: "FaceKit is optimized for modern iOS devices equipped with TrueDepth camera arrays." },
       ]}
+      buttons={[{ text: "Download the App", href: "#" }]}
       imageSrc="http://img.b2bpic.net/free-photo/global-communication-hd-wallpaper-business-network-design_53876-153352.jpg"
       title="Frequently Asked Questions"
       description="Answers to common questions about your facial tracking journey."
@@ -167,4 +168,4 @@ export default function LandingPage() {
       </ReactLenis>
     </ThemeProvider>
   );
-}
+}