Merge version_4 into main

Merge version_4 into main

src/app/page.tsx

@@ -48,6 +48,7 @@ export default function LandingPage() {
             title="Revolutionize Your Workflow with AI Video"
             description="From cinematic storyboards to finished 4K visuals, NexusAI empowers you to generate high-fidelity video in seconds."
             tag="New: Advanced Video Generation"
+            buttons={[{ text: "Start Creating", href: "#features" }]}
             mediaItems={[
               { videoSrc: "https://www.w3schools.com/html/mov_bbb.mp4?_wi=1", imageAlt: "AI Video Generation Demo" },
               { imageSrc: "http://img.b2bpic.net/free-photo/3d-render-network-communications-with-flowing-connecting-lines-dots_1048-13580.jpg", imageAlt: "Creative AI Engine" }