chore : update project documentation and config

Update CLAUDE.md structure, add implementation plans, fix
config/reference.php and MeProvider comment.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/State/MeProvider.php

@@ -20,7 +20,7 @@ final readonly class MeProvider implements ProviderInterface
 
     public function provide(Operation $operation, array $uriVariables = [], array $context = []): User
     {
-        /** @var User $user */
+        // @var User $user
         return $this->security->getUser();
     }
 }