feat: add X-In-App-Browser header to OAuth token POST request

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

Author: 2 people

modules/go5auth/lib/Auth/Source/LoggedUser.php

@@ -107,7 +107,10 @@ private function getTokenInfoFromCode($code, $hostname)
                     'client_id' => WEB_CLIENT_ID,
                     'client_secret' => WEB_CLIENT_SECRET,
                     'code' => $code,
-                ]
+                ],
+                'headers' => [
+                    'X-In-App-Browser' => 1,
+                ],
             ]);
 
             return json_decode($codeResponse->getBody()->getContents());