feat(vip): add default icons and remove download speed

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

inc/helpers/user-center-renderers/credits-vip.php

@@ -50,7 +50,10 @@ if ($vip_level >= 1 && !empty($vip_settings['levels'][$vip_level]['name'])) {
 	$level_name = (string) $vip_settings['levels'][$vip_level]['name'];
 }
 
-$cash_symbol = '￥';
+$level_icon_url = esc_url((string) ($vip_settings['levels'][$vip_level]['img_icon'] ?? ''));
+$level_icon = $level_icon_url !== ''
+	? '<img class="aksrt-vip-level-icon" src="' . $level_icon_url . '" alt="" loading="lazy" decoding="async">'
+	: '<i class="fas fa-crown" aria-hidden="true"></i>';
 if (class_exists('\AKSRT\Settings\Settings')) {
 	$paid_display = \AKSRT\Settings\Settings::get_paid_content_settings();
 	$cash_symbol = (string) ($paid_display['display']['currency_symbol'] ?? '￥');
@@ -79,7 +82,7 @@ if (class_exists('\AKSRT\Payment\ChargeCard')) {
 	<div class="uc-vip-card__content">
 		<div class="uc-vip-card__header">
 			<div class="uc-vip-card__icon">
-				<i class="fas fa-crown" aria-hidden="true"></i>
+				<?php echo $level_icon; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>
 			</div>
 			<div class="uc-vip-card__info">
 				<span class="uc-vip-card__label"><?php echo esc_html($level_name); ?></span>