feat: sync showcase with WRNexusJS 0.8.72 and @wrnexus/ui 0.8.88

- Sync app, public, scripts, test and examples from the framework's
  component-showcase: redesigned component demos, marketing blocks under
  /blocks, template and preview galleries, distinct Timeline/Section
  variants, Chat Bubble receipts, a top-placement Drawer demo, and the
  playground code panel fix (objects in array props no longer blank out).
- Standalone adaptations kept: the generator and tests read
  component-reference.json from the published @wrnexus/ui, and tests use
  the published @wrnexus/compiler and @wrnexus/syntax.
- Dependencies: every @wrnexus/* package to its latest release (ui 0.8.88,
  styles 0.8.26, core 0.8.16, cli 0.8.72, ...), happy-dom for the
  playground tests, Tailwind 4.3; bun.lock and package-lock.json refreshed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/pages/core.wrn

@@ -3,54 +3,24 @@ page CoreShowcase {
   layout = "showcase"
   seo {
     title = "Core components"
-    description = "5 core components from @wrnexus/ui."
+    description = "2 core components from @wrnexus/ui."
   }
   view {
     <header class="showcase-hero showcase-hero--category">
       <span class="showcase-eyebrow">Component category</span>
       <h1 class="showcase-title">Core</h1>
-      <p class="showcase-description">5 unique, responsive, theme-aware components. Open a component to inspect multiple live configurations and its complete props API.</p>
-      <div class="category-meta"><span>5 components</span><span>Multiple use cases</span><span>13 live configurations</span></div>
+      <p class="showcase-description">2 unique, responsive, theme-aware components. Open a component to inspect multiple live configurations and its complete props API.</p>
+      <div class="category-meta"><span>2 components</span><span>Multiple use cases</span><span>4 live configurations</span></div>
     </header>
     <div class="catalog-grid">
       <article class="catalog-card" data-interactive-preview="false">
         <div class="catalog-card-preview">
           <div class="catalog-card-glow" aria-hidden="true"></div>
-          <div class="catalog-card-stage"><AuthForm size="default" action="#auth-form-demo" title="Auth Form example" description="A polished default auth form for a modern application." showRemember="true" showName="true" submitLabel="Auth Form" class="showcase-instance showcase-instance--1" /></div>
-        </div>
-        <div class="catalog-card-body">
-          <div><span class="catalog-card-category">Core</span><h2>Auth Form</h2><p>Reusable auth form component.</p></div>
-          <div class="catalog-card-footer"><span>13 props · 1 slots</span><a href="/components/auth-form">Explore component <span aria-hidden="true">→</span></a></div>
-        </div>
-      </article>
-      <article class="catalog-card" data-interactive-preview="false">
-        <div class="catalog-card-preview">
-          <div class="catalog-card-glow" aria-hidden="true"></div>
-          <div class="catalog-card-stage"><AuthSplitLayout size="default" title="Auth Split Layout example" description="A polished default auth split layout for a modern application." features='[{"label":"Team members","values":["5","Unlimited","Unlimited"]},{"label":"Support","values":["Email","Priority","Dedicated"]},{"label":"Audit history","values":["7 days","90 days","Custom"]}]' class="showcase-instance showcase-instance--1" /></div>
-        </div>
-        <div class="catalog-card-body">
-          <div><span class="catalog-card-category">Core</span><h2>Auth Split Layout</h2><p>Reusable auth split layout component.</p></div>
-          <div class="catalog-card-footer"><span>8 props · 2 slots</span><a href="/components/auth-split-layout">Explore component <span aria-hidden="true">→</span></a></div>
-        </div>
-      </article>
-      <article class="catalog-card" data-interactive-preview="false">
-        <div class="catalog-card-preview">
-          <div class="catalog-card-glow" aria-hidden="true"></div>
-          <div class="catalog-card-stage"><PortalDashboard size="default" title="Portal Dashboard example" description="A polished default portal dashboard for a modern application." descriptionKey="A polished default portal dashboard for a modern application." metrics='[{"id":"portal-dashboard-0-1","key":"portal-dashboard-0-1","value":"primary","label":"Primary workflow","title":"Primary workflow","description":"A clean default configuration for everyday product interfaces.","text":"A configurable sample message.","href":"#portal-dashboard-demo","actionHref":"#portal-dashboard-demo","actionLabel":"View details","icon":"icon-[lucide--sparkles]","iconClass":"icon-[lucide--sparkles]","variant":"primary","status":"Active","time":"09:30","current":true,"selected":true,"checked":true,"disabled":false,"outgoing":false,"open":true,"number":1,"count":16,"percentage":72,"color":"#7c3aed","target":"_self","ariaLabel":"Open primary workflow 1","items":[{"label":"Nested option A","value":"nested-a"},{"label":"Nested option B","value":"nested-b"}],"links":[{"label":"Documentation","href":"#documentation"},{"label":"API reference","href":"#api-reference"}],"values":["Included","Standard"]},{"id":"portal-dashboard-0-2","key":"portal-dashboard-0-2","value":"secondary","label":"Additional option","title":"Supporting example","description":"A clean default configuration for everyday product interfaces.","text":"Another configurable message.","href":"#portal-dashboard-demo","actionHref":"#portal-dashboard-demo","actionLabel":"View details","icon":"icon-[lucide--sparkles]","iconClass":"icon-[lucide--sparkles]","variant":"primary","status":"Active","time":"09:30","current":false,"selected":false,"checked":false,"disabled":false,"outgoing":true,"open":true,"number":2,"count":32,"percentage":72,"color":"#7c3aed","target":"_self","ariaLabel":"Open primary workflow 2","items":[{"label":"Nested option A","value":"nested-a"},{"label":"Nested option B","value":"nested-b"}],"links":[{"label":"Documentation","href":"#documentation"},{"label":"API reference","href":"#api-reference"}],"values":["Included","Standard"]}]' actions='[{"id":"portal-dashboard-0-1","key":"portal-dashboard-0-1","value":"primary","label":"Primary workflow","title":"Primary workflow","description":"A clean default configuration for everyday product interfaces.","text":"A configurable sample message.","href":"#portal-dashboard-demo","actionHref":"#portal-dashboard-demo","actionLabel":"View details","icon":"icon-[lucide--sparkles]","iconClass":"icon-[lucide--sparkles]","variant":"primary","status":"Active","time":"09:30","current":true,"selected":true,"checked":true,"disabled":false,"outgoing":false,"open":true,"number":1,"count":16,"percentage":72,"color":"#7c3aed","target":"_self","ariaLabel":"Open primary workflow 1","items":[{"label":"Nested option A","value":"nested-a"},{"label":"Nested option B","value":"nested-b"}],"links":[{"label":"Documentation","href":"#documentation"},{"label":"API reference","href":"#api-reference"}],"values":["Included","Standard"]},{"id":"portal-dashboard-0-2","key":"portal-dashboard-0-2","value":"secondary","label":"Additional option","title":"Supporting example","description":"A clean default configuration for everyday product interfaces.","text":"Another configurable message.","href":"#portal-dashboard-demo","actionHref":"#portal-dashboard-demo","actionLabel":"View details","icon":"icon-[lucide--sparkles]","iconClass":"icon-[lucide--sparkles]","variant":"primary","status":"Active","time":"09:30","current":false,"selected":false,"checked":false,"disabled":false,"outgoing":true,"open":true,"number":2,"count":32,"percentage":72,"color":"#7c3aed","target":"_self","ariaLabel":"Open primary workflow 2","items":[{"label":"Nested option A","value":"nested-a"},{"label":"Nested option B","value":"nested-b"}],"links":[{"label":"Documentation","href":"#documentation"},{"label":"API reference","href":"#api-reference"}],"values":["Included","Standard"]}]' updates='[{"id":"portal-dashboard-0-1","key":"portal-dashboard-0-1","value":"primary","label":"Primary workflow","title":"Primary workflow","description":"A clean default configuration for everyday product interfaces.","text":"A configurable sample message.","href":"#portal-dashboard-demo","actionHref":"#portal-dashboard-demo","actionLabel":"View details","icon":"icon-[lucide--sparkles]","iconClass":"icon-[lucide--sparkles]","variant":"primary","status":"Active","time":"09:30","current":true,"selected":true,"checked":true,"disabled":false,"outgoing":false,"open":true,"number":1,"count":16,"percentage":72,"color":"#7c3aed","target":"_self","ariaLabel":"Open primary workflow 1","items":[{"label":"Nested option A","value":"nested-a"},{"label":"Nested option B","value":"nested-b"}],"links":[{"label":"Documentation","href":"#documentation"},{"label":"API reference","href":"#api-reference"}],"values":["Included","Standard"]},{"id":"portal-dashboard-0-2","key":"portal-dashboard-0-2","value":"secondaryLine truncated
-        </div>
-        <div class="catalog-card-body">
-          <div><span class="catalog-card-category">Core</span><h2>Portal Dashboard</h2><p>Reusable portal dashboard component.</p></div>
-          <div class="catalog-card-footer"><span>14 props · 1 slots</span><a href="/components/portal-dashboard">Explore component <span aria-hidden="true">→</span></a></div>
-        </div>
-      </article>
-      <article class="catalog-card" data-interactive-preview="false">
-        <div class="catalog-card-preview">
-          <div class="catalog-card-glow" aria-hidden="true"></div>
-          <div class="catalog-card-stage"><PreferenceSwitcher size="default" themeLabel="Preference Switcher" colorLabel="Preference Switcher" languageLabel="Preference Switcher" compact="false" class="showcase-instance showcase-instance--1" /></div>
+          <div class="catalog-card-stage"><PreferenceSwitcher size="default" themeLabel="Preference Switcher" colorLabel="Preference Switcher" languageLabel="Preference Switcher" compact="false" iconOnly="true" showCurrentLanguage="true" class="showcase-instance showcase-instance--1" /></div>
         </div>
         <div class="catalog-card-body">
           <div><span class="catalog-card-category">Core</span><h2>Preference Switcher</h2><p>Reusable preference switcher component.</p></div>
-          <div class="catalog-card-footer"><span>9 props · 0 slots</span><a href="/components/preference-switcher">Explore component <span aria-hidden="true">→</span></a></div>
+          <div class="catalog-card-footer"><span>16 props · 0 slots</span><a href="/components/preference-switcher">Explore component <span aria-hidden="true">→</span></a></div>
         </div>
       </article>
       <article class="catalog-card" data-interactive-preview="false">