chore(branding): remove leftover upstream theme identifiers

The theme was renamed Zibll/子比 → AKSRT → Jio, but upstream branding
survived the sweeps in CSS classes, the SVG sprite prefix, a persisted
widget field ID, JS events, admin Vue class names, test infrastructure
and docblocks.

Renames:
- zib-widget / zib-widget-wrap / zib-slider → jio-widget-box /
  jio-widget-box-wrap / jio-slider-box (jio-widget is taken by the modern
  widget shell, jio-box-* by the card primitives)
- zib-partners-scroll + zps-* → jio-partners-scroll + jps-*
- zib-combo-info-card + zci-* → jio-combo-info-card + jci-*
- zibsvg- → jiosvg-, including the exported picker helpers and the
  fa-zibsvg- family-prefix guard
- zibpay_type → pay_type; the dual-read fallback in PostQuery collapses
  to a single key
- [zibajax="submit"] dropped (no PHP emitter); zib_ajax.success →
  jio_ajax.success
- aks-* admin Vue classes → jio-*
- zib_palette() → palette()

User-facing vendor traces are gone: the floating "more" button default no
longer ships a zibll.com link or 子比主题 marketing copy, the notice
widget ships no preset promo entries, and the four 官网教程 links are
removed from the post-list admin schema.

Test infrastructure renamed to neutral names (docker-compose.reference.yml,
Caddyfile, article-baseline.json, modern-widgets-contract.test.cjs) with
their DB/volume/env/slug identifiers following.

Kept intentionally, documented in tests/fixtures/README.md: the golden
fixture reference fingerprint (a SHA-256 record of an external directory,
read by validate-widget-golden / generate-widget-golden-fixture /
audit-widget-system), the doesNotMatch guards that prove the old tokens are
gone, and the reference theme's own meta key in the visual fixtures.

No backward-compat or data migration: saved widget configs holding old
icon keys or the old field ID silently lose them, per the project's
rewrite-over-compatibility rule.

Verified: 132/132 node contract tests, php tests/widget-system/run.php
(146 assertions), audit-admin-contracts, audit-psr4-paths and
validate-widget-golden all green; tracked bundles regenerated and in sync.

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

inc/helpers/jio-pay.php

@@ -105,7 +105,7 @@ if (!function_exists('jio_list_cash_payment_methods')) {
             return [];
         }
 
-        // 渠道展示名对齐参考主题 zibpay_get_payment_method_args：
+        // 渠道展示名映射：
         // 微信 / 支付宝 / 余额 / 卡密 / PayPal / Stripe（网关 get_name 仅供
         // 订单等内部场景，支付方式 UI 统一用本映射）。
         $labels = [
@@ -163,10 +163,9 @@ if (!function_exists('jio_payment_order_slots')) {
 /**
  * 按后台「收款接口显示顺序」（pay_sdk_order）重排支付方式列表。
  *
- * 语义对齐参考主题 zibpay_get_payment_methods()：按配置槽位顺序把命中的方式
- * 依次提到前面，未纳入槽位的方式保持原有相对顺序并留在末尾；未配置顺序时
- * 原样返回（即保持注册顺序）。这是排序的唯一实现，所有收银台构建支付方式
- * 列表的位置都必须经由此函数。
+ * 按配置槽位顺序把命中的方式依次提到前面，未纳入槽位的方式保持原有相对顺序
+ * 并留在末尾；未配置顺序时原样返回（即保持注册顺序）。这是排序的唯一实现，
+ * 所有收银台构建支付方式列表的位置都必须经由此函数。
  *
  * @param array<int, array{id:string,name:string}> $methods
  * @return array<int, array{id:string,name:string}>
@@ -1426,11 +1425,11 @@ if (!function_exists('jio_get_paywall_html')) {
                 JIO_PAY_TYPE_VIDEO => '<i class="fa fas fa-play-circle fa-fw" aria-hidden="true"></i>' . esc_html__('查看视频', 'jio'),
             ];
             $view_label = $view_labels[$pay_type] ?? '<i class="fa far fa-dot-circle fa-fw" aria-hidden="true"></i>' . esc_html__('查看内容', 'jio');
-			return '<div class="zib-widget pay-box pay-widget paid-box order-type-' . $order_type . '" style="padding:0">' . $tag . '<div class="relative-h ' . esc_attr($theme) . '" style="background-size:120%"><div class="pay-widget__orb pay-widget__orb--right ' . esc_attr($theme) . '"></div><div class="pay-widget__orb pay-widget__orb--left ' . esc_attr($theme) . '"></div><div class="relative box-body"><div class="text-center mt10 box-body"><p><i class="fa fas fa-shopping-bag fa-3x" aria-hidden="true"></i></p><b class="em14">' . esc_html__('已购买', 'jio') . '</b></div></div></div><div class="box-body">' . $widget_service . '<div class="mt10"><a href="#posts-pay" class="but padding-lg btn-block ' . esc_attr($theme) . '">' . $view_label . '</a></div>' . $demo_row . $attrs . '</div>' . $count . '</div>';
+			return '<div class="jio-widget-box pay-box pay-widget paid-box order-type-' . $order_type . '" style="padding:0">' . $tag . '<div class="relative-h ' . esc_attr($theme) . '" style="background-size:120%"><div class="pay-widget__orb pay-widget__orb--right ' . esc_attr($theme) . '"></div><div class="pay-widget__orb pay-widget__orb--left ' . esc_attr($theme) . '"></div><div class="relative box-body"><div class="text-center mt10 box-body"><p><i class="fa fas fa-shopping-bag fa-3x" aria-hidden="true"></i></p><b class="em14">' . esc_html__('已购买', 'jio') . '</b></div></div></div><div class="box-body">' . $widget_service . '<div class="mt10"><a href="#posts-pay" class="but padding-lg btn-block ' . esc_attr($theme) . '">' . $view_label . '</a></div>' . $demo_row . $attrs . '</div>' . $count . '</div>';
 		}
 
 		if ($is_widget) {
-			return '<div class="zib-widget pay-box pay-widget order-type-' . $order_type . '" style="padding:0">' . $tag . '<div class="relative-h ' . esc_attr($theme) . '" style="background-size:120%"><div class="pay-widget__orb pay-widget__orb--right ' . esc_attr($theme) . '"></div><div class="pay-widget__orb pay-widget__orb--left ' . esc_attr($theme) . '"></div><div class="relative box-body"><div class="text-center mt10">' . $price . '</div></div><div class="relative">' . $vip . '</div></div>' . $discount_banner . '<div class="box-body">' . $widget_service . '<div class="mt10">' . $button . '</div>' . $demo_row . $attrs . '</div>' . $count . '</div>';
+			return '<div class="jio-widget-box pay-box pay-widget order-type-' . $order_type . '" style="padding:0">' . $tag . '<div class="relative-h ' . esc_attr($theme) . '" style="background-size:120%"><div class="pay-widget__orb pay-widget__orb--right ' . esc_attr($theme) . '"></div><div class="pay-widget__orb pay-widget__orb--left ' . esc_attr($theme) . '"></div><div class="relative box-body"><div class="text-center mt10">' . $price . '</div></div><div class="relative">' . $vip . '</div></div>' . $discount_banner . '<div class="box-body">' . $widget_service . '<div class="mt10">' . $button . '</div>' . $demo_row . $attrs . '</div>' . $count . '</div>';
 		}
 
         $thumb = get_the_post_thumbnail($post, 'medium', ['class' => 'fit-cover', 'alt' => '']);
@@ -1454,7 +1453,7 @@ if (!function_exists('jio_get_paywall_html')) {
 			$graphic = '<div class="flex0 relative mr20 hide-sm pay-thumb"><div class="graphic">' . $thumb . $graphic_actions . '</div></div>';
 		}
 		$demo_mobile = $demo !== '' ? '<div class="mt10 visible-xs-block">' . $demo . '</div>' : '';
-		return '<div class="zib-widget pay-box order-type-' . $order_type . '" id="posts-pay"><div class="flex pay-flexbox">' . $graphic . '<div class="flex-auto-h flex xx jsb"><dt class="text-ellipsis pay-title">' . esc_html($title) . '</dt><div class="mt6 em09 muted-2-color">' . wp_kses_post($doc) . '</div><div>' . $price . '</div>' . $discount_mobile . ($vip !== '' ? '<div>' . $vip . '</div>' : '') . '<div class="text-right mt10">' . $button . '</div></div></div>' . $article_service . $demo_mobile . $attrs . $tag . $count . '</div>';
+		return '<div class="jio-widget-box pay-box order-type-' . $order_type . '" id="posts-pay"><div class="flex pay-flexbox">' . $graphic . '<div class="flex-auto-h flex xx jsb"><dt class="text-ellipsis pay-title">' . esc_html($title) . '</dt><div class="mt6 em09 muted-2-color">' . wp_kses_post($doc) . '</div><div>' . $price . '</div>' . $discount_mobile . ($vip !== '' ? '<div>' . $vip . '</div>' : '') . '<div class="text-right mt10">' . $button . '</div></div></div>' . $article_service . $demo_mobile . $attrs . $tag . $count . '</div>';
     }
 }
 
@@ -1533,7 +1532,7 @@ if (!function_exists('jio_get_paid_download_actions_html')) {
 }
 
 /**
- * Purchased article card matching Zibll's paid-box structure.
+ * Purchased article card, rendered in the paid-box structure.
  */
 if (!function_exists('jio_get_paid_box_html')) {
 	function jio_get_paid_box_html(WP_Post $post): string {
@@ -1632,7 +1631,7 @@ if (!function_exists('jio_get_paid_box_html')) {
 		$pay_extra_hide = trim((string) ($meta['pay_extra_hide'] ?? ''));
 		$pay_extra_hide = $pay_extra_hide !== '' ? '<div class="pay-extra-hide">' . $pay_extra_hide . '</div>' : '';
 
-		return '<div class="pay-box zib-widget paid-box order-type-' . $order_type . '" id="posts-pay"' . $root_data . '>'
+		return '<div class="pay-box jio-widget-box paid-box order-type-' . $order_type . '" id="posts-pay"' . $root_data . '>'
 			. $header
 			. $paid_box
 			. '<div class="' . esc_attr($body_class) . '">'