feat: integrate Monolog for enhanced logging across providers and controller

src/Service/GitLabProvider.php

@@ -2,6 +2,7 @@
 
 namespace App\Service;
 
+use Psr\Log\LoggerInterface;
 use Symfony\Contracts\HttpClient\HttpClientInterface;
 
 /**
@@ -16,6 +17,7 @@ class GitLabProvider implements ProviderInterface
         private readonly HttpClientInterface $client,
         private readonly string $username,
         private readonly string $token,
+        private readonly LoggerInterface $logger,
         private readonly string $baseUrl = '',
     ) {}
 
@@ -31,6 +33,8 @@ class GitLabProvider implements ProviderInterface
     {
         $baseUrl = rtrim($this->baseUrl !== '' ? $this->baseUrl : 'https://gitlab.com', '/');
 
+        $this->logger->debug('GitLabProvider: fetching contributions', ['user' => $this->username, 'url' => $baseUrl]);
+
         // Resolve numeric user ID from username
         $userResponse = $this->client->request('GET', "$baseUrl/api/v4/users", [
             'headers' => ['PRIVATE-TOKEN' => $this->token],
@@ -67,6 +71,13 @@ class GitLabProvider implements ProviderInterface
             $page++;
         } while (count($events) === 100);
 
+        $this->logger->info('GitLabProvider: fetched contributions', [
+            'user'  => $this->username,
+            'pages' => $page - 1,
+            'days'  => count($result),
+            'total' => array_sum($result),
+        ]);
+
         return $result;
     }
 }