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>

templates/parts/user/author-hero.php

@@ -2,9 +2,9 @@
 /**
  * Author Hero — shared hero section for author archive and public user homepage.
  *
- * Aligns with legacy(): cover, avatar, name, identity, desc,
- * and header actions. The cover carries the 人气值 / 点赞 meta pills
- * (legacy zib_get_author_header_metas); follower counts stay in the tab bar.
+ * Cover, avatar, name, identity, desc,
+ * and header actions. The cover carries the 人气值 / 点赞 meta pills;
+ * follower counts stay in the tab bar.
  *
  * Contract: get_template_part(..., null, $args)
  *   user              WP_User
@@ -47,7 +47,7 @@ $show_report = !empty($dashboard['show_report']);
 $bg_url = function_exists('jio_get_user_cover_url') ? jio_get_user_cover_url($user_id) : '';
 $is_own = !empty($dashboard['is_own_profile']);
 
-// 封面右上角数据条（参考主题 zib_get_author_header_metas）：人气值 + 点赞，
+// 封面右上角数据条：人气值 + 点赞，
 // 粉丝数只在内容 tab 上呈现，不进入封面。
 $cover_metas = [];
 if (function_exists('jio_get_user_posts_meta_sum') && function_exists('jio_cut_count')) {
@@ -57,14 +57,14 @@ if (function_exists('jio_get_user_posts_meta_sum') && function_exists('jio_cut_c
 		$cover_metas[] = [
 			'count' => $view_n,
 			'title' => sprintf(__('人气值 %s', 'jio'), $view_n),
-			'icon'  => 'zibsvg-hot',
+			'icon'  => 'jiosvg-hot',
 		];
 	}
 	if ($like_n !== '' && $like_n !== '0') {
 		$cover_metas[] = [
 			'count' => $like_n,
 			'title' => sprintf(__('获得%s个点赞', 'jio'), $like_n),
-			'icon'  => 'zibsvg-like',
+			'icon'  => 'jiosvg-like',
 		];
 	}
 }
@@ -81,7 +81,7 @@ $unread_count = $is_own ? jio_get_user_unread_notification_count($user_id) : 0;
 $cover_ban_html = function_exists('jio_get_user_cover_menu_action_html')
 	? jio_get_user_cover_menu_action_html($user_id)
 	: '';
-// 已封禁/小黑屋用户不展示举报入口（参考主题 zib_get_report_link 排除语义）。
+// 已封禁/小黑屋用户不展示举报入口。
 $target_ban_restricted = function_exists('jio_is_user_ban_restricted') && jio_is_user_ban_restricted($user_id);
 $show_cover_report = $cover_ban_html === '' && $show_report && !$is_own && !$target_ban_restricted;
 $show_cover_menu = $has_more_details || $show_cover_report || $cover_ban_html !== '';