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>

assets/css/frontend/breadcrumb.css

@@ -83,7 +83,7 @@ ul.breadcrumb > li:last-child,
 
 /* Video footer breadcrumb — legacy .single-video .breadcrumb：标题在下方
    footer（flex jsb at 行）不叠加封面，只归零内边距，保留基础弱化样式
-   （opacity .6 与 12px 下边距），对齐 zibll main.css。 */
+   （opacity .6 与 12px 下边距）。 */
 .single-video .breadcrumb {
   padding: 0;
 }

assets/css/frontend/modal-runtime.css

@@ -286,8 +286,8 @@ body.jio-modal-runtime-open {
   transition: opacity 0.15s ease;
 }
 
-/* ---- 禁封用户弹窗（参考主题 set_user_ban 模态框几何 1:1）----
-   参考主题 zib_get_edit_user_ban_link 未传 data-class → 走 Bootstrap 默认
+/* ---- 禁封用户弹窗（set_user_ban 模态框几何 1:1）----
+   编辑入口未传 data-class → 走 Bootstrap 默认
    .modal-dialog（>=768px 宽 600px）；data-height=360 → .modal-content 初始
    高度 360 后动画至内容高度；mobile-bottom → <769px 底部抽屉。
    此处以 min-height:360px 复刻初始高度契约，桌面宽取 600px。 */
@@ -339,7 +339,7 @@ body.jio-modal-runtime-open {
   padding: 2px 6px;
 }
 
-/* 解封视图多彩横幅（参考主题 zib_get_modal_colorful_header('c-yellow', ...)）：
+/* 解封视图多彩横幅（多彩横幅头契约：c-yellow 配色变体）：
    120px 高绝对定位横幅 + 旋转彩斑，后续表单整体下移 120px。 */
 .jio-user-ban-modal .modal-colorful-header,
 .jio-user-ban-modal .colorful-bg,

assets/css/frontend/pages/submit.css

@@ -4,7 +4,7 @@
   display: flow-root;
 }
 
-#jio-submit-form .zib-widget {
+#jio-submit-form .jio-widget-box {
   margin-bottom: 15px;
   padding: 15px;
   border-radius: var(--main-radius, 8px);
@@ -726,7 +726,7 @@ body.jio-editor-media-open {
 }
 
 @media (max-width: 767px) {
-  .newposts-wrap .zib-widget {
+  .newposts-wrap .jio-widget-box {
     border-radius: 0;
   }
 

assets/css/frontend/pay-box.css

@@ -1,5 +1,5 @@
-/* Canonical Zibll 9.0 paid-content card shell. */
-.zib-widget.pay-box {
+/* Paid-content card shell. */
+.jio-widget-box.pay-box {
   clear: both;
   margin-bottom: 20px;
   padding: 15px;

assets/css/frontend/sidebar.css

@@ -50,7 +50,7 @@
   color: var(--color-primary, #f04494);
 }
 
-/* .widget a 的链接色不得覆盖 .but / .img-badge 自身配色（zibll 的 zib-widget 不设置链接色） */
+/* .widget a 的链接色不得覆盖 .but / .img-badge 自身配色（jio-widget-box 不设置链接色） */
 .widget a.but,
 .widget a.img-badge {
   color: var(--this-color, #fff);

assets/css/frontend/single-post/cover.css

@@ -94,7 +94,7 @@
 
 
 /* ===== Video footer (legacy single-video-footer) ===== */
-/* 内边距沿用 legacy 契约 .single-video-footer{padding:15px}（与 zibll 一致），
+/* 内边距沿用 legacy 契约 .single-video-footer{padding:15px}，
    面包屑在 flex jsb at 行首，不再额外包装。 */
 .single-head-cover .single-video-footer .article-title {
     font-size: clamp(1.1rem, 2.4vw, 1.45rem); font-weight: 700; margin: 8px 0 0; line-height: 1.35;

assets/css/frontend/single-post/related-toc.css

@@ -383,8 +383,8 @@ html.dark .article-end-separator span {
 
 
 
-/* ===== Zibll .zib-widget base (正文下方卡片堆栈依赖) ===== */
-.zib-widget {
+/* ===== .jio-widget-box base (正文下方卡片堆栈依赖) ===== */
+.jio-widget-box {
     clear: both;
     background-color: var(--main-bg-color);
     padding: 15px;
@@ -392,7 +392,7 @@ html.dark .article-end-separator span {
     border-radius: var(--main-radius);
     margin-bottom: 20px;
 }
-.zib-widget.nobottom.notop {
+.jio-widget-box.nobottom.notop {
     padding-top: 0;
     padding-bottom: 0;
 }

assets/css/frontend/vip-modal.css

@@ -3,7 +3,7 @@
  */
 
 /* VIP now uses the shared modal runtime host.
-   壳几何 1:1 对齐 Zibll modal_pay_uservip：
+   壳几何 1:1 对齐 modal_pay_uservip：
    - 宽度 = bootstrap3 ≥768px 的 .modal-dialog 600px，配合
      .modal.flex .modal-dialog 的 max-width: calc(100% - 20px)
    - 高度 = .modal.flex .modal-content 的 max-height: calc(100vh - 20px)