Add Deploy on Hanzo badge to template pages + README

- TemplatePageClient: hoist repoUrl to a single derived const, reuse it in
  openGitHubRepo and a new Deploy on Hanzo badge linking to
  hanzo.app/new?template=<repoUrl>. Badges all templates via the one component.
- README: replace Deploy on Vercel boilerplate with Deploy on Hanzo badge.

README.md

@@ -31,8 +31,8 @@ To learn more about Next.js, take a look at the following resources:
 
 You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js) - your feedback and contributions are welcome!
 
-## Deploy on Vercel
+## Deploy on Hanzo
 
-The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
+[![Deploy on Hanzo](https://hanzo.app/deploy-badge.svg)](https://hanzo.app/new?template=https://github.com/hanzoai/gallery)
 
-Check out our [Next.js deployment documentation](https://nextjs.org/docs/app/building-your-application/deploying) for more details.
+One click provisions this app on Hanzo Cloud; every template in the gallery carries the same badge on its page.

app/templates/[slug]/TemplatePageClient.tsx

@@ -19,6 +19,10 @@ export function TemplatePageClient({ variants, prevTemplate, nextTemplate, curre
   const router = useRouter();
   const [selectedVariant, setSelectedVariant] = useState<Template>(variants[0]);
 
+  // Canonical repo URL for the selected variant (single source of truth).
+  const repoUrl = `https://github.com/hanzo-apps/template-${selectedVariant.slug}`;
+  const deployUrl = `https://hanzo.app/new?template=${encodeURIComponent(repoUrl)}`;
+
   // Navigate to random template
   function goToRandomTemplate() {
     const currentSlug = variants[0].slug;
@@ -31,7 +35,6 @@ export function TemplatePageClient({ variants, prevTemplate, nextTemplate, curre
 
   // Open GitHub repository
   function openGitHubRepo() {
-    const repoUrl = `https://github.com/hanzo-apps/template-${selectedVariant.slug}`;
     window.open(repoUrl, '_blank');
   }
 
@@ -113,6 +116,16 @@ export function TemplatePageClient({ variants, prevTemplate, nextTemplate, curre
             >
               🚀 Deploy
             </button>
+            <a
+              href={deployUrl}
+              target="_blank"
+              rel="noopener noreferrer"
+              title="Deploy on Hanzo"
+              className="inline-flex items-center whitespace-nowrap"
+            >
+              {/* eslint-disable-next-line @next/next/no-img-element */}
+              <img src="https://hanzo.app/deploy-badge.svg" alt="Deploy on Hanzo" className="h-9" />
+            </a>
             <button
               onClick={() => {
                 navigator.clipboard.writeText(selectedVariant.path);