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>

tests/widget-system/page-display-contract.test.cjs

@@ -175,7 +175,7 @@ test('header VIP hover cards match the legacy markup and style contract', () =>
   assert.match(legacyMainCss, /\.navbar-top \.navbar-right \.sub-menu\s*\{[^}]*right:\s*0;/s)
 })
 
-test('user card VIP CTA matches the reference zib_get_header_payvip_icon()', () => {
+test('user card VIP CTA matches the reference header VIP icon', () => {
   assert.match(headerUserbox, /'<a class="pay-vip but radius4 payvip-icon btn-block" href="javascript:;">'/)
   assert.match(headerUserbox, /<svg class="em12 mr6" aria-hidden="true"><use xlink:href="#icon-vip_1"><\/use><\/svg>'/)
   assert.match(headerUserbox, /esc_html__\('开通会员 尊享会员权益', 'jio'\)/)
@@ -190,7 +190,7 @@ test('VIP purchase modal matches legacy desktop-center and mobile-bottom positio
 
   assert.doesNotMatch(purchaseModal, /mobileBottom:\s*false/)
   assert.match(modalRuntimeJs, /options\.mobileBottom !== false && isMobile\(\)/)
-  // 壳几何 1:1 对齐 Zibll modal_pay_uservip：桌面 600px（bootstrap3 ≥768px
+  // 壳几何 1:1：桌面 600px（bootstrap3 ≥768px
   // .modal-dialog）+ max-width calc(100% - 20px)（.modal.flex .modal-dialog）；
   // 高度/滚动 = .modal.flex .modal-content 的 max-height calc(100vh - 20px)
   // + overflow-y auto（阈值放宽到整屏，正常内容不出现滚动条）；
@@ -301,13 +301,13 @@ test('header multifunction search keeps focus and submit alignment route-indepen
 test('user profile and author widgets render the reference user-card contract', () => {
   assert.match(frontendRenderer, /in_array\(\$definition->slug\(\), \['user_card', 'author_card'\], true\)/)
   assert.match(frontendRenderer, /self::render_reference_widget\(\$definition, \$instance, \$widget, \$content\)/)
-  assert.match(frontendRenderer, /\$classes = \['zib-widget-wrap', 'jio-'/)
+  assert.match(frontendRenderer, /\$classes = \['jio-widget-box-wrap', 'jio-'/)
   assert.match(frontendRenderer, /\$classes\[\] = 'jio-user-widget-wrap'/)
   assert.match(frontendRenderer, /echo '<div class="widget-container"><div>';/)
   assert.match(frontendRenderer, /\$content_classes = \['widget-content'\]/)
-  // 登录卡片与 reference zib_get_user_card_box 同构：封面、头像框、名字行、统计徽章、简介、按钮。
+  // 登录卡片与参考实现的用户卡同构：封面、头像框、名字行、统计徽章、简介、按钮。
   assert.match(userRenderer, /<div class="mb20">/)
-  assert.match(userRenderer, /user-card zib-widget widget/)
+  assert.match(userRenderer, /user-card jio-widget-box widget/)
   assert.match(userRenderer, /user-cover graphic" style="padding-bottom: 50%;"/)
   assert.match(userRenderer, /avatar-img avatar-lg/)
   assert.match(userRenderer, /user-name flex jc/)
@@ -339,7 +339,7 @@ test('user profile and author widgets render the reference user-card contract',
   assert.match(userRenderer, /loged_title/)
   assert.doesNotMatch(userRenderer, /user-card__auth-btns|render_social_buttons\(/)
   // 后加载的 widget bundle 明确保留单层卡片并让封面贴边。
-  assert.match(widgetCss, /\.user-card\.zib-widget\s*\{[^}]*padding:\s*0;[^}]*overflow:\s*hidden;/s)
+  assert.match(widgetCss, /\.user-card\.jio-widget-box\s*\{[^}]*padding:\s*0;[^}]*overflow:\s*hidden;/s)
   assert.match(legacyMainCss, /\.user-card\.widget \.user-cover \+ \.card-content\s*\{[^}]*margin-top:\s*-55px;/s)
   // 参考主题契约：.widget-content 是无样式结构层，小工具卡片自带内边距；
   // 任何样式层都不得给 .widget-content 加 padding，否则小工具与内容列宽之间出现左右空隙。
@@ -426,7 +426,7 @@ test('header user-card membership stays on one row with a date-only expiry', ()
   // The CTA wrapper is the reference padding wrapper, not a bespoke hook.
   assert.match(headerUserbox, /'<div class="mt10 em09" style="padding:2px;">'/)
   assert.doesNotMatch(headerUserbox, /jio-header-payvip/)
-  // Expiry badge follows zib_get_user_vip_exp_date_text(): an expiry that has
+  // Expiry badge follows the reference expiry text: an expiry that has
   // passed reads 会员已过期, a live one reads the bare date, 永久会员 is reserved
   // for an explicit permanent membership, and no expiry data renders no badge.
   assert.match(headerUserbox, /\$expires <= time\(\)/)