Remove CharacterComponent and CharacterDetail components

- Deleted `CharacterComponent` and `CharacterDetail` files from the project.
- Refactored related logic to improve code maintainability and reduce redundancy.

components/StaticAlert.tsx

@@ -75,7 +75,9 @@ export default function StaticAlert(
                     />
                 </div>
                 <div className="flex-grow mr-3">
-                    <div className="text-text-primary font-medium text-base">{message}</div>
+                    <div className="text-text-primary font-medium text-base">
+                        {typeof message === 'string' ? message : String(message ?? 'Une erreur est survenue')}
+                    </div>
                 </div>
                 <button
                     onClick={handleClose}