phpstan fix

Author: crazywhalecc

src/SPC/store/Downloader.php

@@ -668,7 +668,7 @@ private static function downloadByType(string $type, string $name, array $conf,
                     ]);
                     break;
                 case 'custom': // Custom download method, like API-based download or other
-                    if (isset($conf['func']) && is_callable($conf['func'])) {
+                    if (isset($conf['func'])) {
                         $conf['name'] = $name;
                         $conf['func']($force, $conf, $download_as);
                         break;

src/SPC/util/ConfigValidator.php

@@ -525,7 +525,6 @@ private static function validateFieldType(string $field, mixed $value, string $n
             'object|bool' => (is_assoc_array($value) || is_bool($value)) ?: throw new ValidationException("{$type} {$name} [{$field}] must be object or boolean"),
             'object|array' => is_array($value) ?: throw new ValidationException("{$type} {$name} [{$field}] must be an object or array"),
             'callable' => true, // Skip validation for callable
-            default => true,
         };
     }