feat(pages): 1:1 文章导航 posts-navs (zibll postsnavs)

Per-category full post lists, affix TOC shell, admin drag-sort settings
modal + AJAX save (navs_show_cat_id / name / desc).

src/AKSRT/Core/PostsNavs.php

@@ -0,0 +1,77 @@
+<?php
+/**
+ * 文章导航页设置 AJAX（zibll action/post_navs.php parity）.
+ *
+ * @package AKSRT
+ */
+
+namespace AKSRT\Core;
+
+defined('ABSPATH') || exit;
+
+class PostsNavs {
+
+	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 {
+		add_action('wp_ajax_aksrt_post_navs_settings', [$this, 'ajax_save_settings']);
+	}
+
+	/**
+	 * Super-admin only: save navs_page_name / desc / ordered cat IDs.
+	 */
+	public function ajax_save_settings(): void {
+		if (!current_user_can('manage_options')) {
+			wp_send_json(['error' => 1, 'ys' => 'danger', 'msg' => __('权限不足', 'aksrt')]);
+		}
+		if (!check_ajax_referer('aksrt_post_navs_settings', '_wpnonce', false)) {
+			wp_send_json(['error' => 1, 'ys' => 'danger', 'msg' => __('安全校验失败', 'aksrt')]);
+		}
+
+		$page_id = isset($_POST['page_id']) ? absint($_POST['page_id']) : 0;
+		if ($page_id <= 0 || get_post_type($page_id) !== 'page') {
+			wp_send_json(['error' => 1, 'ys' => 'danger', 'msg' => __('无效页面', 'aksrt')]);
+		}
+
+		$cat_ids = [];
+		if (isset($_POST['navs_show_cat_id'])) {
+			$raw = wp_unslash($_POST['navs_show_cat_id']);
+			if (is_array($raw)) {
+				$cat_ids = array_values(array_filter(array_map('intval', $raw)));
+			} elseif (is_string($raw) && $raw !== '') {
+				$decoded = json_decode($raw, true);
+				if (is_array($decoded)) {
+					$cat_ids = array_values(array_filter(array_map('intval', $decoded)));
+				} else {
+					$cat_ids = array_values(array_filter(array_map('intval', explode(',', $raw))));
+				}
+			}
+		}
+
+		if (empty($cat_ids)) {
+			wp_send_json(['error' => 1, 'ys' => 'danger', 'msg' => __('请选择需要显示的分类', 'aksrt')]);
+		}
+
+		if (isset($_POST['navs_page_name'])) {
+			update_post_meta($page_id, 'navs_page_name', sanitize_text_field(wp_unslash((string) $_POST['navs_page_name'])));
+		}
+		if (isset($_POST['navs_page_desc'])) {
+			update_post_meta($page_id, 'navs_page_desc', sanitize_text_field(wp_unslash((string) $_POST['navs_page_desc'])));
+		}
+		update_post_meta($page_id, 'navs_show_cat_id', $cat_ids);
+
+		wp_send_json([
+			'error' => 0,
+			'msg'   => __('保存成功', 'aksrt'),
+			'reload'=> true,
+			'ids'   => $cat_ids,
+		]);
+	}
+}

src/AKSRT/Core/ScriptsPart1b.php

@@ -404,6 +404,39 @@ trait ScriptsPart1b {
             }
         }
 
+        // 文章导航页（zibll postsnavs.php）
+        if (is_page_template('templates/pages/page-posts-navs.php')) {
+            $pn_css = get_template_directory() . '/assets/css/routes/posts-navs.css';
+            if (file_exists($pn_css)) {
+                wp_enqueue_style(
+                    'aksrt-route-posts-navs',
+                    $base_uri . '/assets/css/routes/posts-navs.css',
+                    ['aksrt-tokens'],
+                    (string) filemtime($pn_css)
+                );
+            }
+            $section_navs = get_template_directory() . '/assets/js/section-navs.js';
+            if (file_exists($section_navs)) {
+                wp_enqueue_script(
+                    'aksrt-section-navs',
+                    $base_uri . '/assets/js/section-navs.js',
+                    ['jquery'],
+                    (string) filemtime($section_navs),
+                    true
+                );
+            }
+            $pn_js = get_template_directory() . '/assets/js/posts-navs-page.js';
+            if (file_exists($pn_js)) {
+                wp_enqueue_script(
+                    'aksrt-posts-navs-page',
+                    $base_uri . '/assets/js/posts-navs-page.js',
+                    ['jquery'],
+                    (string) filemtime($pn_js),
+                    true
+                );
+            }
+        }
+
         // 交易中心共享壳层（购物车 / 订单 / 收益）
         $is_commerce_center = is_page_template('templates/pages/page-orders.php')
             || is_page_template('templates/pages/page-cart.php')