Fix CFP section links to point to conference-hall.io platform

Co-authored-by: fredleger <2778741+fredleger@users.noreply.github.com>

Author: Copilot

application/src/data/pages/home/en.ts

@@ -151,6 +151,7 @@ export default {
       ],
     },
     cta: 'Submit via Conference HALL',
+    ctaHref: 'https://conference-hall.io/cloud-native-provence-2026',
     image: {
       src: '~/assets/images/event.jpg',
       alt: 'Call for Papers',

application/src/data/pages/home/fr.ts

@@ -152,6 +152,7 @@ export default {
       ],
     },
     cta: 'Soumettre via Conference HALL',
+    ctaHref: 'https://conference-hall.io/cloud-native-provence-2026',
     image: {
       src: '~/assets/images/event.jpg',
       alt: 'Appel à conférenciers',

application/src/pages/home/_content.astro

@@ -68,6 +68,7 @@ export interface Props {
       items?: readonly string[];
     };
     cta?: string;
+    ctaHref?: string;
   };
   venue?: {
     title?: string;
@@ -270,8 +271,9 @@ const heroBadge = hero?.badge;
         {cfp.cta && (
           <div class="pt-2 text-center">
             <a
-              href="#"
+              href={cfp.ctaHref ?? '#'}
               class="inline-flex items-center justify-center rounded-md bg-primary px-6 py-3 font-semibold text-white transition hover:opacity-90"
+              {...(cfp.ctaHref?.startsWith('http') ? { target: '_blank', rel: 'noopener noreferrer' } : {})}
             >
               {cfp.cta}
             </a>