refactor(github): migrate contribution query to GraphQL bundle

Use GraphQLApiClientRegistryInterface to build the query via the
bundle's query builder. Keep Symfony HttpClient for the actual POST
since GitHub requires application/json (the bundle's transport sends
form_params instead).

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

src/Service/GitHubProvider.php

@@ -2,6 +2,8 @@
 
 namespace App\Service;
 
+use IDCI\Bundle\GraphQLClientBundle\Client\GraphQLApiClient;
+use IDCI\Bundle\GraphQLClientBundle\Client\GraphQLApiClientRegistryInterface;
 use Symfony\Contracts\HttpClient\HttpClientInterface;
 
 /**
@@ -13,24 +15,10 @@ class GitHubProvider
 {
     private const GRAPHQL_URL = 'https://api.github.com/graphql';
 
-    private const QUERY = <<<'GRAPHQL'
+    public function __construct(
-    query($username: String!, $from: DateTime!, $to: DateTime!) {
+        private readonly HttpClientInterface $client,
-      user(login: $username) {
+        private readonly GraphQLApiClientRegistryInterface $registry,
-        contributionsCollection(from: $from, to: $to) {
+    ) {}
-          contributionCalendar {
-            weeks {
-              contributionDays {
-                date
-                contributionCount
-              }
-            }
-          }
-        }
-      }
-    }
-    GRAPHQL;
-
-    public function __construct(private readonly HttpClientInterface $client) {}
 
     /**
      * @return array<string, int>  date (Y-m-d) => contribution count
@@ -40,15 +28,31 @@ class GitHubProvider
         $from = (new \DateTimeImmutable('-365 days'))->format('Y-m-d\T00:00:00\Z');
         $to   = (new \DateTimeImmutable())->format('Y-m-d\T23:59:59\Z');
 
+        /** @var GraphQLApiClient $graphqlClient */
+        $graphqlClient = $this->registry->get('github');
+
+        $query = $graphqlClient->buildQuery(
+            ['user' => ['login' => $username]],
+            [
+                'contributionsCollection' => [
+                    '_parameters' => ['from' => $from, 'to' => $to],
+                    'contributionCalendar' => [
+                        'weeks' => [
+                            'contributionDays' => ['date', 'contributionCount'],
+                        ],
+                    ],
+                ],
+            ]
+        )->getGraphQLQuery();
+
+        // GitHub's GraphQL API requires application/json — the bundle's built-in
+        // transport sends form_params, so we use Symfony HttpClient here instead.
         $response = $this->client->request('POST', self::GRAPHQL_URL, [
             'headers' => [
                 'Authorization' => "Bearer $token",
                 'Content-Type'  => 'application/json',
             ],
-            'json' => [
+            'json' => ['query' => $query],
-                'query'     => self::QUERY,
-                'variables' => ['username' => $username, 'from' => $from, 'to' => $to],
-            ],
         ]);
 
         $data = $response->toArray();