feat(pages): 1:1 文档导航 + 文章归档 (zibll documentnav/archives)

Category accordion + AJAX cat/search posts for documentnav; archives
month lists with view/comment/like meta, sidebar and comments shell.

src/AKSRT/Core/Templates.php

@@ -40,6 +40,7 @@ class Templates {
             'templates/pages/page-profile.php' => __('AKSRT - 个人中心', 'aksrt'),
             'templates/pages/page-user-home.php' => __('AKSRT - 用户主页', 'aksrt'),
             'templates/pages/page-archives.php' => __('AKSRT - 文章归档', 'aksrt'),
+            'templates/pages/page-documentnav.php' => __('AKSRT - 文档导航', 'aksrt'),
             'templates/pages/page-categories.php' => __('AKSRT - 分类汇总', 'aksrt'),
             'templates/pages/page-newposts.php' => __('AKSRT - 最新文章', 'aksrt'),
             // 注意：page-newposts = 最新文章列表；投稿页是 page-submit（写文章/投稿）