Refactor authentication: streamline cookie handling and enhance username retrieval in responses

api/auth/isauth.php

@@ -4,5 +4,6 @@ require "../api.php";
 $api = new gbAPI(true);
 
 $api->answer(200, [
-    "login" => true
+    "login" => true,
+    "username" => $api->username
 ]);

api/auth/login.php

@@ -40,7 +40,6 @@ if ($result && password_verify($password, $result[0]["password"])) {
 
     // Set cookies
     setcookie("auth_token", $token, time() + 86400, "/");
-    setcookie("username", $username, time() + 86400, "/");
 
     $api->answer(200);
 }else{