refactor: rename the theme brand and every identifier from AKSRT to Jio

Full-project rename. `git grep -i aksrt` is now empty apart from the
DBMigrator 3.3.0 changelog note that documents the rename itself.

Code identifiers
- PHP namespace AKSRT\ -> Jio\ (composer PSR-4 + 378 declarations)
- global constants AKSRT_* -> JIO_* (VERSION/DIR/URI, PAY_TYPE_*, CAPTCHA_*)
- procedural functions, hooks, options, meta keys, table names,
  cookies, query vars, ajax actions and nonces: aksrt_ -> jio_
- text domain aksrt -> jio; Theme Name -> Jio
- JS globals: aksrtData/aksrtAdminData/... -> jioData/jioAdminData/...,
  window.AKSRTCaptcha & friends -> window.JioCaptcha, Aksrt* -> Jio*
- Vue components Aks*.vue -> Jio*.vue (15 files renamed + imports)
- CSS classes/data-attrs/custom properties: aksrt- -> jio-
- REST namespace aksrt/v1 -> jio/v1 (incl. payment gateway callbacks)

Storage layer
- DB tables {prefix}aksrt_* -> {prefix}jio_*; SCHEMA_VERSION 3.2.0 -> 3.3.0
  so dbDelta creates the new names on install
- widget id_base aksrt_widget_* -> jio_widget_*
- uninstall.php drop list rebuilt from the actual migrator tables
  (dropped 3 stale entries, added the 17 missing ones)

Removed
- hardcoded https://api.aksrt.com/version.json default update endpoint;
  get_endpoint() now reads the 「更新端点」 setting and do_check() no-ops
  when it is empty

Files renamed: inc/helpers/aksrt-*.php -> jio-*.php (54),
assets/admin/src/components/form/Aks*.vue -> Jio*.vue (15).
Build artifacts regenerated: assets/css/build, assets/js/runtime,
assets/admin/build.

Verified: audit-psr4-paths errors=0, audit-admin-contracts errors=0
(warnings=56, unchanged baseline), 813/813 widget-system tests,
44/44 phpunit, php -l clean across all PHP.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

inc/helpers/search/jio-search-posts.php

@@ -0,0 +1,100 @@
+<?php
+/**
+ * Search panel hot posts (legacy parity).
+ *
+ * @package Jio
+ */
+
+defined('ABSPATH') || exit;
+
+if (!function_exists('jio_get_search_posts')) :
+	/**
+	 * Build hot-post slides for the search dropdown.
+	 *
+	 * @param int    $count    Number of posts.
+	 * @param string $orderby  views|date|modified|…
+	 * @param bool   $show_img Use graphic cards (true) or text list (false).
+	 */
+	function jio_get_search_posts(int $count = 6, string $orderby = 'views', bool $show_img = true): string {
+		$count = max(1, min(20, $count));
+
+		$args = [
+			'posts_per_page'         => $count,
+			'ignore_sticky_posts'    => true,
+			'post_status'            => 'publish',
+			'post_type'              => 'post',
+			'no_found_rows'          => true,
+			'update_post_meta_cache' => true,
+			'update_post_term_cache' => false,
+		];
+
+		if ($orderby === 'views') {
+			$args['orderby']  = 'meta_value_num';
+			$args['meta_key'] = 'jio_post_views';
+			$args['order']    = 'DESC';
+		} else {
+			$allowed = ['date', 'modified', 'comment_count', 'rand', 'title'];
+			$args['orderby'] = in_array($orderby, $allowed, true) ? $orderby : 'date';
+			$args['order']   = 'DESC';
+		}
+
+		$query = new WP_Query($args);
+		// Fallback when no posts have views meta yet.
+		if (!$query->have_posts() && $orderby === 'views') {
+			wp_reset_postdata();
+			$args['orderby'] = 'date';
+			unset($args['meta_key']);
+			$query = new WP_Query($args);
+		}
+
+		$lists = '';
+		while ($query->have_posts()) {
+			$query->the_post();
+			$post_id = (int) get_the_ID();
+			$title   = get_the_title($post_id);
+			if ($title === '') {
+				continue;
+			}
+
+			if ($show_img && function_exists('jio_graphic_card')) {
+				$thumb = get_the_post_thumbnail_url($post_id, 'medium');
+				if (!$thumb) {
+					$thumb = get_template_directory_uri() . '/assets/img/placeholder.svg';
+				}
+				$views = function_exists('jio_get_post_views') ? (int) jio_get_post_views($post_id) : 0;
+				$views_txt = function_exists('jio_format_number')
+					? jio_format_number($views)
+					: (string) $views;
+				$time_ago = human_time_diff(get_the_time('U', $post_id), current_time('timestamp'));
+				$info     = '<item>' . esc_html(sprintf(/* translators: %s: relative time */ __('%s前', 'jio'), $time_ago))
+					. '</item><item class="pull-right"><i class="fa fas fa-eye" aria-hidden="true"></i> '
+					. esc_html((string) $views_txt) . '</item>';
+
+				$lists .= '<div class="swiper-slide em09 mr10" style="width:160px;">';
+				$lists .= jio_graphic_card([
+					'type'         => 'style-3',
+					'class'        => '',
+					'img'          => $thumb,
+					'alt'          => $title,
+					'link'         => [
+						'url'    => get_permalink($post_id),
+						'target' => '',
+					],
+					'text1'        => $title,
+					'text2'        => mb_strlen($title) > 29 ? mb_substr($title, 0, 29) . '…' : $title,
+					'text3'        => $info,
+					'lazy'         => true,
+					'height_scale' => 70,
+				], false);
+				$lists .= '</div>';
+			} else {
+				$lists .= '<li><a class="icon-circle text-ellipsis" href="'
+					. esc_url(get_permalink($post_id)) . '">'
+					. esc_html($title) . '</a></li>';
+			}
+		}
+		wp_reset_postdata();
+
+		return $lists;
+	}
+endif;