feat(admin): expose shop/forum CPTs on native WP sidebar (Phase 0–1)

Align admin ops entry with zibll: product/plate/topic menus and taxonomies
show in the WordPress sidebar when shop_s/bbs_s are enabled, gated by
AKSRT_Settings. Add IA map + gap matrix docs for the full native-ops
migration path. SPA ops pages remain until Phase 2–3 native pages ship.

inc/classes/class-aksrt-shop-term-meta.php

@@ -45,6 +45,14 @@ class AKSRT_Shop_Term_Meta {
             return;
         }
 
+        $shop_enabled = true;
+        if (class_exists('AKSRT_Settings')) {
+            $shop_settings = AKSRT_Settings::get_shop_settings();
+            $shop_enabled  = !empty($shop_settings['enabled']);
+        }
+        $shop_show_ui   = true;
+        $shop_show_menu = is_admin() ? $shop_enabled : false;
+
         register_taxonomy('shop_discount', 'aksrt_product', [
             'labels'            => [
                 'name'          => __('优惠活动', 'aksrt'),
@@ -57,9 +65,10 @@ class AKSRT_Shop_Term_Meta {
             ],
             'public'            => true,
             'hierarchical'      => false,
-            'show_ui'           => false,
+            'show_ui'           => $shop_show_ui,
+            'show_in_menu'      => $shop_show_menu,
             'show_in_rest'      => true,
-            'show_admin_column' => false,
+            'show_admin_column' => true,
             'rewrite'           => ['slug' => 'shop-discount', 'with_front' => false],
         ]);
     }