feat: upgrade PolyGen AI logo (Imagen 4, with text)

Author: Reg (Ceradon AI)

assets/polygen-logo.png

@@ -74,7 +74,7 @@
           <div class="grid gap-12 lg:grid-cols-[3fr_2fr] lg:items-center">
             <div class="space-y-6">
               <div class="flex items-center gap-4 mb-2">
-                <img src="./assets/polygen-logo.webp" alt="PolyGen AI logo" class="h-16 w-16 rounded-xl image-surface" width="512" height="512" />
+                <img src="./assets/polygen-logo.png" alt="PolyGen AI" class="h-16 md:h-20 mb-2" loading="eager" />
                 <span class="tag">Polygen AI Platform</span>
               </div>
               <h1 class="text-4xl sm:text-5xl font-bold text-[color:var(--white)]">Text-to-3D. Describe it, print it.</h1>