feat(pay): enforce VIP free-download daily quota like zibll

templates/parts/resource-download-box.php

@@ -282,7 +282,23 @@ $currency = class_exists('AKSRT_Settings') ? AKSRT_Settings::get_currency_name()
 			</ul>
 			<?php endif; ?>
 
-							<div class="resource-download-box__guarantees">
+							<?php
+				if (is_user_logged_in() && $cost <= 0 && function_exists('aksrt_get_user_free_download_limit')) {
+					$dl_limit = aksrt_get_user_free_download_limit();
+					if ($dl_limit > 0) {
+						$dl_used = function_exists('aksrt_get_user_free_downloaded_number') ? aksrt_get_user_free_downloaded_number() : 0;
+						$dl_surplus = max(0, $dl_limit - $dl_used);
+						$vip_lv = function_exists('aksrt_get_user_vip_level') ? aksrt_get_user_vip_level() : 0;
+						if ($dl_surplus <= 0) {
+							echo '<div class="resource-download-box__quota-notice"><span class="badg c-red btn-block">' . esc_html__('您今日下载免费资源个数已超限，请明日再下载。', 'aksrt') . '</span></div>';
+						} else {
+							$who = $vip_lv > 0 ? esc_html__('您是尊贵的会员，', 'aksrt') : esc_html__('您', 'aksrt');
+							echo '<div class="resource-download-box__quota-notice"><span class="badg c-red btn-block">' . $who . esc_html(sprintf(__('今日还可下载 %s 个免费资源', 'aksrt'), number_format_i18n($dl_surplus))) . '</span></div>';
+						}
+					}
+				}
+				?>
+<div class="resource-download-box__guarantees">
 					<?php
 					if (function_exists('aksrt_get_pay_service_html')) {
 						echo aksrt_get_pay_service_html(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped