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.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/phases/01-foundation/01-01-PLAN.md

@@ -171,7 +171,7 @@ export interface TechStack {
    ```vue
    <template>
      <div>
-       <h1>Portfolio Killian Dalcin</h1>
+       <h1>Portfolio Killian' DAL-CIN</h1>
        <p>Nuxt 4 Foundation</p>
      </div>
    </template>