feat(forum): plate lists widget payload + REST

Shared query_payload for plate lists and
/forum/frontend/widgets/plates for remote refresh.

src/AKSRT/Forum/Forum.php

@@ -252,6 +252,11 @@ class Forum {
             'callback'            => [$this, 'rest_widget_topics'],
             'permission_callback' => '__return_true',
         ]);
+        register_rest_route('aksrt/v1', '/forum/frontend/widgets/plates', [
+            'methods'             => 'GET',
+            'callback'            => [$this, 'rest_widget_plates'],
+            'permission_callback' => '__return_true',
+        ]);
     }
 
     public function rest_widget_topics(\WP_REST_Request $request) {
@@ -278,6 +283,24 @@ class Forum {
         ], 200);
     }
 
+    public function rest_widget_plates(\WP_REST_Request $request) {
+        if (!class_exists('\AKSRT\Widgets\WidgetForumPlateLists')) {
+            return new \WP_REST_Response(['success' => false, 'message' => 'widget unavailable'], 500);
+        }
+        $instance = [
+            'showposts' => max(1, min(30, (int) ($request->get_param('showposts') ?? $request->get_param('count') ?? 8))),
+            'orderby'   => sanitize_key((string) ($request->get_param('orderby') ?? 'menu_order')),
+            'style'     => sanitize_key((string) ($request->get_param('style') ?? 'default')),
+            'filter'    => sanitize_key((string) ($request->get_param('filter') ?? '')),
+            'cat'       => sanitize_text_field((string) ($request->get_param('cat') ?? '')),
+        ];
+        $payload = \AKSRT\Widgets\WidgetForumPlateLists::query_payload($instance);
+        return new \WP_REST_Response([
+            'success' => true,
+            'html'    => (string) ($payload['html'] ?? ''),
+        ], 200);
+    }
+
 
 
     public function render_board_cards(array $boards): void {