feat(admin): order shipping/after-sale create and plate list columns

Allow creating shipping records and after-sale tickets from the native
order detail page, and show plate moderator/stats columns on the forum
plate list table. Source only; no SPA build artifacts.

inc/classes/forum/class-aksrt-plate-admin-list.php

@@ -0,0 +1,107 @@
+<?php
+/**
+ * Native list-table columns for aksrt_forum_plate.
+ *
+ * @package AKSRT
+ */
+
+defined('ABSPATH') || exit;
+
+class AKSRT_Plate_Admin_List {
+
+    private static $instance = null;
+
+    public static function get_instance(): self {
+        if (null === self::$instance) {
+            self::$instance = new self();
+        }
+        return self::$instance;
+    }
+
+    public function init(): void {
+        if (!is_admin()) {
+            return;
+        }
+        add_filter('manage_edit-aksrt_forum_plate_columns', [$this, 'columns']);
+        add_action('manage_aksrt_forum_plate_posts_custom_column', [$this, 'render_column'], 10, 2);
+        add_filter('manage_edit-aksrt_forum_plate_sortable_columns', [$this, 'sortable_columns']);
+        add_action('pre_get_posts', [$this, 'apply_orderby']);
+    }
+
+    public function columns(array $columns): array {
+        $new = [];
+        foreach ($columns as $key => $label) {
+            $new[$key] = $label;
+            if ($key === 'title') {
+                $new['aksrt_plate_mods']   = __('版主数', 'aksrt');
+                $new['aksrt_plate_posts']  = __('帖子数', 'aksrt');
+                $new['aksrt_plate_reply']  = __('回复数', 'aksrt');
+                $new['aksrt_plate_views']  = __('浏览', 'aksrt');
+                $new['aksrt_plate_follow'] = __('关注', 'aksrt');
+                $new['aksrt_plate_pending_apps'] = __('待审申请', 'aksrt');
+            }
+        }
+        return $new;
+    }
+
+    public function sortable_columns(array $columns): array {
+        $columns['aksrt_plate_posts'] = 'aksrt_posts_count';
+        $columns['aksrt_plate_views'] = 'aksrt_plate_views';
+        return $columns;
+    }
+
+    public function render_column(string $column, int $post_id): void {
+        switch ($column) {
+            case 'aksrt_plate_mods':
+                $mods = get_post_meta($post_id, '_aksrt_moderators', true);
+                $count = is_array($mods) ? count(array_filter(array_map('intval', $mods))) : 0;
+                echo esc_html((string) $count);
+                break;
+            case 'aksrt_plate_posts':
+                echo esc_html((string) (int) get_post_meta($post_id, '_aksrt_posts_count', true));
+                break;
+            case 'aksrt_plate_reply':
+                echo esc_html((string) (int) get_post_meta($post_id, '_aksrt_reply_count', true));
+                break;
+            case 'aksrt_plate_views':
+                echo esc_html((string) (int) get_post_meta($post_id, '_aksrt_plate_views', true));
+                break;
+            case 'aksrt_plate_follow':
+                echo esc_html((string) (int) get_post_meta($post_id, '_aksrt_follow_count', true));
+                break;
+            case 'aksrt_plate_pending_apps':
+                $apps = get_post_meta($post_id, '_aksrt_moderator_applications', true);
+                $pending = 0;
+                if (is_array($apps)) {
+                    foreach ($apps as $app) {
+                        if (is_array($app) && (($app['status'] ?? '') === 'pending')) {
+                            $pending++;
+                        }
+                    }
+                }
+                if ($pending > 0) {
+                    echo '<strong style="color:#b32d2e;">' . esc_html((string) $pending) . '</strong>';
+                } else {
+                    echo '0';
+                }
+                break;
+        }
+    }
+
+    public function apply_orderby(WP_Query $query): void {
+        if (!is_admin() || !$query->is_main_query()) {
+            return;
+        }
+        if ($query->get('post_type') !== 'aksrt_forum_plate') {
+            return;
+        }
+        $orderby = $query->get('orderby');
+        if ($orderby === 'aksrt_posts_count') {
+            $query->set('meta_key', '_aksrt_posts_count');
+            $query->set('orderby', 'meta_value_num');
+        } elseif ($orderby === 'aksrt_plate_views') {
+            $query->set('meta_key', '_aksrt_plate_views');
+            $query->set('orderby', 'meta_value_num');
+        }
+    }
+}