修复了一些问题

src/Admin/ControllerBase.php

@@ -92,6 +92,10 @@ abstract class ControllerBase {
                 case 'array':
                     $out[$key] = is_array($val) ? $val : [];
                     break;
+				case 'attachment_ids':
+					$ids = is_array($val) ? array_filter(array_map('absint', $val)) : [];
+					$out[$key] = array_values(array_unique($ids));
+					break;
                 default:
                     $out[$key] = sanitize_text_field($val);
             }

src/Admin/SchemaProvider.php

@@ -443,6 +443,12 @@ class SchemaProvider {
 
     private function sanitize_value($value, string $type) {
         switch ($type) {
+			case 'attachment_ids':
+				if (!is_array($value)) {
+					return [];
+				}
+				$ids = array_values(array_filter(array_map('absint', $value)));
+				return array_values(array_unique($ids));
             case 'html':
                 return wp_kses_post((string) $value);
             case 'textarea':
@@ -488,6 +494,10 @@ class SchemaProvider {
 			return $this->sanitize_value($value, $sanitize_type);
 		}
 
+		if ($type === 'gallery') {
+			return $this->sanitize_value($value, 'attachment_ids');
+		}
+
 		if (in_array($type, ['fieldset', 'accordion'], true)) {
 			return $this->sanitize_object_fields($value, (array) ($field['fields'] ?? []));
 		}
@@ -658,6 +668,7 @@ class SchemaProvider {
             'icon'     => 'string',
             'media'    => 'url',
 			'upload'   => 'url',
+			'gallery'  => 'attachment_ids',
             'code'     => 'code',
         ];