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>

src/Frontend/PageAdminSet.php

@@ -2,8 +2,8 @@
 /**
  * 前端页面编辑（后台「扩展&增强 → 系统工具」的 admin_frontend_set）。
  *
- * 对齐参考主题 zib-frontend-set.php：wp_footer 直出 #modal_admin_set 弹窗
- * （bootstrap modal + wp-ajax-submit 走 vendored main.js 的 jio_ajax 契约），
+ * wp_footer 直出 #modal_admin_set 弹窗
+ * （bootstrap modal + wp-ajax-submit 走 main.js 的 jio_ajax 契约），
  * 管理员在前台快速修改当前文章/页面的参数或分类术语的名称与描述。
  *
  * @package Jio
@@ -73,9 +73,9 @@ class PageAdminSet {
 	}
 
 	/**
-	 * 悬浮按钮：追加到右侧悬浮按钮栏（对齐参考主题 zib_admin_frontend_set_botton）。
+	 * 悬浮按钮：追加到右侧悬浮按钮栏。
 	 *
-	 * 参考主题对移动端与桌面端共用同一按钮，$is_mobile 仅用于保持 filter 签名。
+	 * 移动端与桌面端共用同一按钮，$is_mobile 仅用于保持 filter 签名。
 	 */
 	public function float_button($buttons, $is_mobile = null) {
 		if (!self::enabled()) {
@@ -90,7 +90,7 @@ class PageAdminSet {
 		return (string) $buttons . $button;
 	}
 
-	/** wp_footer 输出 #modal_admin_set（对齐参考主题 zib_frontend_set_modal）。 */
+	/** wp_footer 输出 #modal_admin_set。 */
 	public function render_modal(): void {
 		if (!self::enabled()) {
 			return;
@@ -111,7 +111,7 @@ class PageAdminSet {
 			$type_label  = (string) get_post_type_object($post_type)->labels->singular_name;
 		}
 
-		// 对齐参考主题 zib_get_customize_widgets_url：跳转定制器小工具面板并返回当前页。
+		// 跳转定制器小工具面板并返回当前页。
 		$current_url = (string) home_url(add_query_arg(null, null));
 		$widgets_url = add_query_arg([
 			'url'       => rawurlencode($current_url),
@@ -288,7 +288,7 @@ class PageAdminSet {
 		}
 	}
 
-	/** 文章/页面的弹窗字段（对齐参考主题 zib_get_frontend_set_input）。 */
+	/** 文章/页面的弹窗字段。 */
 	private function post_inputs(int $post_id): string {
 		$meta = class_exists('\Jio\Core\PostMetaBox')
 			? \Jio\Core\PostMetaBox::get_meta($post_id)
@@ -452,7 +452,7 @@ class PageAdminSet {
 		]);
 	}
 
-	/** 表单控件构建（对齐参考主题 zib_edit_input_construct）。 */
+	/** 表单控件构建。 */
 	private function render_inputs(array $inputs): string {
 		$output = '';
 		foreach ($inputs as $meta) {