fix: unify responsive design across documentation portal

app/pages/packages/test.wrn

@@ -9,9 +9,8 @@ page wrnexustest {
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         <a class="brand" href="/"><span>W</span> WRNexusJS</a>
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       <aside class="sidebar"><a href="/packages">← All packages</a><span class="category">Tooling</span><h2>@wrnexus/test</h2><p>WRNexusJS-aware component, route, and browser testing utilities.</p><span class="status status-beta">Private preview · 0.2.15</span><nav><a href="#access">Access</a><a href="#guide">Guide</a><a href="#api">Complete API</a></nav></aside>
@@ -19,7 +18,6 @@ page wrnexustest {
 <p>Part of the <strong>WRNexusJS</strong> framework — an SSR-first, Bun-native full-stack web framework.</p>
 <h3 id="overview">Overview</h3>
 <p><code>@wrnexus/test</code> is the server-side test toolkit you reach for when writing tests for a WRNexusJS app. It runs under <code>bun test</code> (invoked via <code>wrnexus test</code>) and gives you a single import surface: the <code>bun:test</code> primitives (<code>test</code>, <code>expect</code>, <code>mock</code>, …) re-exported alongside WRNexusJS-aware helpers that compile <code>.wrn</code> components, hydrate server HTML in a DOM, invoke API route handlers, and boot the real app on an ephemeral port for integration tests.</p>
-<h3 id="installation">Installation</h3>
 <pre data-language="bash"><code>bun add @wrnexus/test</code></pre>
 <blockquote>Private package — the machine must be authenticated to the <code>wrnexus</code> npm org</blockquote>
 <blockquote>(a read token in <code>~/.npmrc</code>). Requires <strong>Bun</strong> (Node is not supported).</blockquote>
@@ -170,7 +168,7 @@ export &#123; type Harness, type HarnessOptions, callRoute, createHarness, mount
   handler: (ctx: Context) =&gt; Response | Promise&lt;Response&gt;,
   request: Request,
 ): Promise&lt;Response&gt;;</code></pre></article></div></section></article>
-      <aside class="on-this-page"><h2>On this page</h2><nav><a class="toc-level-2" href="#guide">Guide</a><a class="toc-level-3" href="#overview">Overview</a><a class="toc-level-3" href="#installation">Installation</a><a class="toc-level-3" href="#api">API</a><a class="toc-level-4" href="#re-exported-test-primitives">Re-exported test primitives</a><a class="toc-level-4" href="#rendercomponent-source-props">renderComponent(source, props?)</a><a class="toc-level-4" href="#mounthtml-html">mountHtml(html)</a><a class="toc-level-4" href="#callroute-handler-request">callRoute(handler, request)</a><a class="toc-level-4" href="#createharness-projectroot-options">createHarness(projectRoot, options?)</a><a class="toc-level-3" href="#usage">Usage</a><a class="toc-level-3" href="#requirements-notes">Requirements / Notes</a><a class="toc-level-2" href="#api">Complete API</a><a class="toc-level-2" href="#examples">Examples</a></nav></aside>
+      <aside class="on-this-page"><h2>On this page</h2><nav><a class="toc-level-2" href="#guide">Guide</a><a class="toc-level-3" href="#overview">Overview</a><a class="toc-level-3" href="#api">API</a><a class="toc-level-4" href="#re-exported-test-primitives">Re-exported test primitives</a><a class="toc-level-4" href="#rendercomponent-source-props">renderComponent(source, props?)</a><a class="toc-level-4" href="#mounthtml-html">mountHtml(html)</a><a class="toc-level-4" href="#callroute-handler-request">callRoute(handler, request)</a><a class="toc-level-4" href="#createharness-projectroot-options">createHarness(projectRoot, options?)</a><a class="toc-level-3" href="#usage">Usage</a><a class="toc-level-3" href="#requirements-notes">Requirements / Notes</a><a class="toc-level-2" href="#api">Complete API</a><a class="toc-level-2" href="#examples">Examples</a></nav></aside>
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       <footer>WRNexusJS 0.2.15 · Private Developer Preview · Bun-native · Documentation generated from installed package APIs.</footer>
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