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>

tools/admin-contract-report.json

@@ -1,5 +1,5 @@
 {
-    "generated_at": "2026-11-01T12:12:14+00:00",
+    "generated_at": "2026-11-01T15:59:01+00:00",
     "errors": [],
     "warnings": [
         "customPage tools-update section 'tools/update' not in PHP schema (ok if pure operational page)",
@@ -258,12 +258,12 @@
         "entry": true,
         "missing_chunks": [],
         "chunks": [
-            "SchemaPage.3Ybae3CT.js",
+            "SchemaPage.D4P-9DC7.js",
             "vendor-vue.CibbKclz.js",
             "FaIcon.DB-L86Cm.js",
-            "useCollapsibleItems.CAN-wuru.js",
+            "useCollapsibleItems.DZpGrxDC.js",
             "vendor-draggable.CJPlJ2VA.js",
-            "FaIconPicker.DKBuH5IK.js",
+            "FaIconPicker.DNtVCp22.js",
             "shared-api.CBZ9FiMu.js",
             "vendor-misc.DkFG_sHo.js",
             "JioColorPicker.QfaAsnV3.js",
@@ -272,22 +272,22 @@
             "badge.on0sWygn.js",
             "vendor-naive.Dfu2WQKq.js",
             "DeferredPage._-8ZQ7kA.js",
-            "NativeOpsRedirect.DTVj_Lah.js",
-            "FloatingButtonsSettings.CLcDBw-c.js",
+            "NativeOpsRedirect.B2wZEyUo.js",
+            "FloatingButtonsSettings.DVBbYPoJ.js",
             "PageHeader.nyzEkEki.js",
-            "FooterTabbarSettings.BnJ6cMko.js",
-            "PostPageSettings.B7UIuzm1.js",
-            "CommentSettings.C9rwfnvh.js",
+            "FooterTabbarSettings.DlI0p5W6.js",
+            "PostPageSettings.Bz4V1oqX.js",
+            "CommentSettings.By49_Xcw.js",
             "PermissionsCapabilities.DqpqZWmL.js",
             "CmsCredits.B6Gorymm.js",
             "ThemeInfoPage.D4pAf5Wr.js",
             "ThemeAuthorizationPage.dha7vRbS.js",
-            "DocsPage.BvQnV-gH.js",
+            "DocsPage.Vq5ivh2L.js",
             "UsersVerify.DQdIZBGv.js",
             "UsersLevel.DGq7yorC.js",
-            "UsersBadge.Cb8c_4zF.js",
+            "UsersBadge.CDPcEJ-D.js",
             "UsersWechatTemplate.CCecYMLT.js",
-            "UsersTicket.DfbFcyTe.js",
+            "UsersTicket.BFOcGa-7.js",
             "ToolsImportExport.BxHqqdz0.js",
             "ToolsHealth.DrJqHumh.js",
             "ToolsUpdate.rL8TduLs.js"