fix: update portfolio branding to "Killian' DAL-CIN" across all documentation and components

- Corrected the name in various files including CLAUDE.md, README.md, and configuration files to reflect the updated branding.
- Ensured consistency in the use of the new name throughout the project, enhancing brand identity.

.planning/phases/02-ssr-shell/02-03-PLAN.md

@@ -128,7 +128,7 @@ useHead({
         '@graph': [
           {
             '@type': 'Person',
-            name: 'Killian Dalcin',
+            name: 'Killian' DAL-CIN',
             url: 'https://killiandalcin.fr',
             jobTitle: 'Developpeur Full Stack Freelance',
             email: 'contact@killiandalcin.fr',
@@ -140,7 +140,7 @@ useHead({
           },
           {
             '@type': 'ProfessionalService',
-            name: 'Killian Dalcin - Developpeur Full Stack',
+            name: 'Killian' DAL-CIN - Developpeur Full Stack',
             url: 'https://killiandalcin.fr',
             logo: 'https://killiandalcin.fr/images/logo.webp',
             priceRange: '$$$',