feat: add animated Mars planet decoration to header

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

components/header.tsx

@@ -1,5 +1,7 @@
 'use client';
 
+import MarsPlanet from '@/components/mars-planet';
+
 interface HeaderProps {
   title: string;
   subtitle?: string;
@@ -25,6 +27,7 @@ export default function Header({ title, subtitle, imageUrl, actions, maxWidth =
         />
 
         <div className={`${maxWidth} mx-auto relative py-14 px-4 sm:py-20 sm:px-6 lg:px-8`}>
+          <MarsPlanet className="absolute right-4 top-4 sm:right-8 sm:top-7 lg:right-10 lg:top-9" />
           <div className="flex flex-col md:flex-row items-center md:items-start gap-8">
             {imageUrl && (
               <div className="md:w-56 flex-shrink-0">