fix: unify responsive design across documentation portal

app/pages/packages/ai.wrn

@@ -9,9 +9,8 @@ page wrnexusai {
       <a class="skip-link" href="#main">Skip to content</a>
       <header class="topbar">
         <a class="brand" href="/"><span>W</span> WRNexusJS</a>
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-        <a class="preview-pill" href="/access">Private preview · v0.2.15</a>
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+        <nav aria-label="Primary"><a href="/getting-started">Get started</a><a href="/tutorial">Tutorial</a><a href="/packages">Packages</a><a href="/guides/project-structure">Guides</a><a href="/language">.wrn language</a><a href="/examples">Examples</a><a href="/search">Search</a></nav>
+        <div class="topbar-actions"><a class="preview-pill" href="/access">Preview · v0.2.15</a><button data-wire-theme-toggle class="theme-button" aria-label="Toggle color theme" title="Toggle color theme">◐</button></div>
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       <aside class="sidebar"><a href="/packages">← All packages</a><span class="category">AI</span><h2>@wrnexus/ai</h2><p>Server-side Anthropic client with generation and streaming.</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 wrnexusai {
 <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/ai</code> is a thin, dependency-free wrapper over the Anthropic <strong>Messages API</strong>, built on <code>fetch</code> (Bun-native, no SDK). Use it in API routes, jobs, or middleware to call Claude. It defaults to the most capable model, <strong><code>claude-opus-4-8</code></strong>, reads your key from <code>ANTHROPIC_API_KEY</code>, and supports both one-shot generation and streaming.</p>
-<h3 id="installation">Installation</h3>
 <pre data-language="bash"><code>bun add @wrnexus/ai</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>
@@ -175,7 +173,7 @@ const reply = await ai.generate(
   ],
   &#123; system: &quot;You are concise.&quot; &#125;,
 );</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="#createai-config">createAI(config?)</a><a class="toc-level-4" href="#ai-generate-prompt-opts-promise-string">ai.generate(prompt, opts?): Promise&lt;string&gt;</a><a class="toc-level-4" href="#ai-stream-prompt-opts-asyncgenerator-string">ai.stream(prompt, opts?): AsyncGenerator&lt;string&gt;</a><a class="toc-level-4" href="#ai-streamresponse-prompt-opts-response">ai.streamResponse(prompt, opts?): Response</a><a class="toc-level-4" href="#generateoptions">GenerateOptions</a><a class="toc-level-4" href="#aierror">AIError</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="#createai-config">createAI(config?)</a><a class="toc-level-4" href="#ai-generate-prompt-opts-promise-string">ai.generate(prompt, opts?): Promise&lt;string&gt;</a><a class="toc-level-4" href="#ai-stream-prompt-opts-asyncgenerator-string">ai.stream(prompt, opts?): AsyncGenerator&lt;string&gt;</a><a class="toc-level-4" href="#ai-streamresponse-prompt-opts-response">ai.streamResponse(prompt, opts?): Response</a><a class="toc-level-4" href="#generateoptions">GenerateOptions</a><a class="toc-level-4" href="#aierror">AIError</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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