feat(admin): order detail view, invite-code batching, product tag term fields

Add native order detail page under 支付中心订单, standalone invite-code
batch generate/disable on users.php, and aksrt_product_tag taxonomy form
fields. Source only; no SPA build artifacts.

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

@@ -45,6 +45,12 @@ class AKSRT_Shop_Term_Meta {
         add_action('aksrt_product_cat_edit_form_fields', [$this, 'render_cat_edit_fields'], 10, 1);
         add_action('created_aksrt_product_cat', [$this, 'save_cat_term_fields']);
         add_action('edited_aksrt_product_cat', [$this, 'save_cat_term_fields']);
+
+        // Product tag display fields.
+        add_action('aksrt_product_tag_add_form_fields', [$this, 'render_tag_add_fields']);
+        add_action('aksrt_product_tag_edit_form_fields', [$this, 'render_tag_edit_fields'], 10, 1);
+        add_action('created_aksrt_product_tag', [$this, 'save_tag_term_fields']);
+        add_action('edited_aksrt_product_tag', [$this, 'save_tag_term_fields']);
     }
 
     // ─── Taxonomy Registration ───────────────────────────────────
@@ -677,4 +683,69 @@ class AKSRT_Shop_Term_Meta {
             update_term_meta($term_id, $key, $value);
         }
     }
+
+    public function render_tag_add_fields(): void {
+        foreach ($this->get_tag_field_definitions() as $key => $def) {
+            echo '<div class="form-field">';
+            echo '<label for="' . esc_attr($key) . '">' . esc_html((string) ($def['description'] ?? $key)) . '</label>';
+            $this->render_tag_field_control($key, $def['default'] ?? '');
+            echo '</div>';
+        }
+    }
+
+    public function render_tag_edit_fields($term): void {
+        if (!($term instanceof WP_Term)) {
+            return;
+        }
+        foreach ($this->get_tag_field_definitions() as $key => $def) {
+            $value = get_term_meta($term->term_id, $key, true);
+            if ($value === '' || $value === false) {
+                $value = $def['default'] ?? '';
+            }
+            echo '<tr class="form-field"><th scope="row"><label for="' . esc_attr($key) . '">' . esc_html((string) ($def['description'] ?? $key)) . '</label></th><td>';
+            $this->render_tag_field_control($key, $value);
+            echo '</td></tr>';
+        }
+    }
+
+    /**
+     * @param mixed $value
+     */
+    private function render_tag_field_control(string $key, $value): void {
+        $val = (string) $value;
+        if ($key === 'shop_tag_is_important') {
+            echo '<label><input type="checkbox" name="' . esc_attr($key) . '" value="1" ' . checked($val, '1', false) . '> ' . esc_html__('启用', 'aksrt') . '</label>';
+            return;
+        }
+        $type = $key === 'shop_tag_priority' ? 'number' : 'text';
+        printf(
+            '<input type="%s" class="regular-text" name="%s" id="%s" value="%s" />',
+            esc_attr($type),
+            esc_attr($key),
+            esc_attr($key),
+            esc_attr($val)
+        );
+    }
+
+    public function save_tag_term_fields(int $term_id): void {
+        if (!current_user_can('manage_categories')) {
+            return;
+        }
+        foreach ($this->get_tag_field_definitions() as $key => $def) {
+            if ($key === 'shop_tag_is_important') {
+                $raw = isset($_POST[$key]) ? '1' : '';
+            } else {
+                if (!isset($_POST[$key])) {
+                    continue;
+                }
+                $raw = wp_unslash($_POST[$key]);
+            }
+            if (isset($def['sanitize']) && is_callable($def['sanitize'])) {
+                $value = call_user_func($def['sanitize'], $raw);
+            } else {
+                $value = sanitize_text_field((string) $raw);
+            }
+            update_term_meta($term_id, $key, $value);
+        }
+    }
 }