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>

public/site.webmanifest

@@ -1,6 +1,6 @@
 {
-    "name": "Killian - Full Stack Developer Portfolio",
-    "short_name": "Killian Portfolio",
+    "name": "Killian'- Full Stack Developer Portfolio",
+    "short_name": "Killian'Portfolio",
     "description": "Professional Full Stack Developer specializing in Vue.js, React, Node.js. Expert in Discord bots, web applications, and custom software solutions.",
     "start_url": "/",
     "display": "standalone",