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/components/drawer.wrn

@@ -179,6 +179,44 @@ page DrawerDetail {
   <div data-slot="footer">
     <div class="showcase-slot">footer slot</div>
   </div>
+&lt;/Drawer&gt;</code></pre>
+          </section>
+        </div>
+      </article>
+      <article class="demo-case">
+        <header class="demo-case-header">
+          <div><span class="demo-case-eyebrow">Compact</span><h2>Top notice drawer</h2><p>Slide a panel down from the top edge for announcements, search, or quick settings.</p></div>
+          <span class="demo-case-number">04</span>
+        </header>
+        <div class="demo-workbench">
+          <div id="drawer-demo-4" class="demo-canvas demo-canvas--4">
+            <div class="demo-browser-chrome"><span></span><span></span><span></span><small>Live preview</small></div>
+            <p class="demo-interaction-hint"><span class="icon-[lucide--mouse-pointer-click] size-4" aria-hidden="true"></span>Click the trigger to open the drawer</p>
+            <div class="demo-render"><Drawer open="false" defaultOpen="false" placement="top" size="sm" variant="success" title="Scheduled maintenance" description="The workspace will be read-only on Sunday from 02:00 to 03:00 UTC." icon="icon-[lucide--trash-2]" label="Advanced example" closeLabel="Advanced example" showClose="true" closeOnBackdrop="true" closeOnEscape="true" duration="260" overlay="true" scrollable="true" triggerLabel="Open top drawer" triggerIcon="icon-[lucide--panel-top-open]" class="showcase-instance showcase-instance--4"><div class="showcase-overlay-content"><p>Save your work before the window starts.</p></div></Drawer></div>
+          </div>
+          <section class="demo-code" aria-label="Top notice drawer usage">
+            <header><span><span class="icon-[lucide--code-2] size-4" aria-hidden="true"></span>Component usage</span><small>.wrn</small></header>
+            <pre><code>&lt;Drawer
+  placement="top"
+  size="sm"
+  variant="success"
+  title="Scheduled maintenance"
+  description="The workspace will be read-only on Sunday from 02:00 to 03:00 UTC."
+  icon="icon-[lucide--trash-2]"
+  label="Advanced example"
+  closeLabel="Advanced example"
+  triggerLabel="Open top drawer"
+  triggerIcon="icon-[lucide--panel-top-open]"&gt;
+  &lt;div data-slot="trigger"&gt;
+    &lt;div class="showcase-slot"&gt;trigger slot&lt;/div&gt;
+  &lt;/div&gt;
+  &lt;div data-slot="header"&gt;
+    &lt;div class="showcase-slot"&gt;header slot&lt;/div&gt;
+  &lt;/div&gt;
+  &lt;div class="showcase-overlay-content"&gt;&lt;p&gt;Save your work before the window starts.&lt;/p&gt;&lt;/div&gt;
+  &lt;div data-slot="footer"&gt;
+    &lt;div class="showcase-slot"&gt;footer slot&lt;/div&gt;
+  &lt;/div&gt;
 &lt;/Drawer&gt;</code></pre>
           </section>
         </div>
@@ -205,7 +243,7 @@ if (component) registerOutputHandler(component, "cancel", (payload) =&gt; <span>
         <section id="api" class="detail-section"><div class="detail-section-heading"><span>Component API</span><h2>Props and configuration</h2><p>All content and behavior shown above is supplied through these props and slots.</p></div><div class="docs-table-wrap"><table class="docs-table"><thead><tr><th>Prop</th><th>Type</th><th>Default</th><th>Required</th></tr></thead><tbody><tr><td><code>open</code></td><td>boolean</td><td><code>false</code></td><td>No</td></tr><tr><td><code>defaultOpen</code></td><td>boolean</td><td><code>false</code></td><td>No</td></tr><tr><td><code>placement</code></td><td>string</td><td><code>"right"</code></td><td>No</td></tr><tr><td><code>size</code></td><td>string</td><td><code>"md"</code></td><td>No</td></tr><tr><td><code>color</code></td><td>string</td><td><code>"primary"</code></td><td>No</td></tr><tr><td><code>variant</code></td><td>string</td><td><code>"default"</code></td><td>No</td></tr><tr><td><code>title</code></td><td>string</td><td><code>"Drawer"</code></td><td>No</td></tr><tr><td><code>description</code></td><td>string</td><td><code>""</code></td><td>No</td></tr><tr><td><code>icon</code></td><td>string</td><td><code>""</code></td><td>No</td></tr><tr><td><code>label</code></td><td>string</td><td><code>"Drawer"</code></td><td>No</td></tr><tr><td><code>closeLabel</code></td><td>string</td><td><code>"Close drawer"</code></td><td>No</td></tr><tr><td><code>showClose</code></td><td>boolean</td><td><code>true</code></td><td>No</td></tr><tr><td><code>closeOnBackdrop</code></td><td>boolean</td><td><code>true</code></td><td>No</td></tr><tr><td><code>closeOnEscape</code></td><td>boolean</td><td><code>true</code></td><td>No</td></tr><tr><td><code>duration</code></td><td>number</td><td><code>260</code></td><td>No</td></tr><tr><td><code>overlay</code></td><td>boolean</td><td><code>true</code></td><td>No</td></tr><tr><td><code>scrollable</code></td><td>boolean</td><td><code>true</code></td><td>No</td></tr><tr><td><code>triggerLabel</code></td><td>string</td><td><code>""</code></td><td>No</td></tr><tr><td><code>triggerIcon</code></td><td>string</td><td><code>""</code></td><td>No</td></tr><tr><td><code>class</code></td><td>string</td><td><code>""</code></td><td>No</td></tr></tbody></table></div></section>
       </main>
       <aside class="detail-aside">
-        <div class="detail-toc"><strong>On this page</strong><a href="#playground">Playground</a><a href="#drawer-demo-1">Right-side detail drawer</a><a href="#drawer-demo-2">Bottom mobile drawer</a><a href="#drawer-demo-3">Wide navigation drawer</a><a href="#events">Outputs</a><a href="#api">Props API</a></div>
+        <div class="detail-toc"><strong>On this page</strong><a href="#playground">Playground</a><a href="#drawer-demo-1">Right-side detail drawer</a><a href="#drawer-demo-2">Bottom mobile drawer</a><a href="#drawer-demo-3">Wide navigation drawer</a><a href="#drawer-demo-4">Top notice drawer</a><a href="#events">Outputs</a><a href="#api">Props API</a></div>
       </aside>
     </div>
     <nav class="detail-pagination">