fix: unify responsive design across documentation portal

app/pages/packages/pubsub.wrn

@@ -9,9 +9,8 @@ page wrnexuspubsub {
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       <aside class="sidebar"><a href="/packages">← All packages</a><span class="category">Realtime</span><h2>@wrnexus/pubsub</h2><p>In-process and Redis-backed publish/subscribe.</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 wrnexuspubsub {
 <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/pubsub</code> is a small server-side pub/sub bus. You publish messages to a topic and subscribe with topic patterns; handlers fire for matching topics. The default driver keeps everything in-process, and you can swap in the Redis driver (<code>@wrnexus/pubsub/redis</code>) to fan messages out across processes or hosts. It also backs <code>@wrnexus/core</code>'s realtime bridge for horizontal scaling.</p>
-<h3 id="installation">Installation</h3>
 <pre data-language="bash"><code>bun add @wrnexus/pubsub</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>
@@ -131,7 +129,7 @@ type Handler&lt;T = unknown&gt; = (message: T, topic: string) =&gt; void | Promi
   publish(topic: string, message: unknown): void | Promise&lt;void&gt;;
   subscribe(pattern: string, handler: Handler): () =&gt; void;
 &#125;</code></pre></article><article class="example-card"><h3>Example 4</h3><pre data-language="ts"><code>function redisDriver(url?: string): PubSubDriver &amp; &#123; close(): void &#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="#createpubsub-driver-pubsub">createPubSub(driver?): PubSub</a><a class="toc-level-4" href="#pattern-matching">Pattern matching</a><a class="toc-level-4" href="#memorydriver-pubsubdriver">memoryDriver(): PubSubDriver</a><a class="toc-level-4" href="#wrnexus-pubsub-redis-redisdriver-url">@wrnexus/pubsub/redis — redisDriver(url?)</a><a class="toc-level-4" href="#resp-codec-internal">RESP codec (internal)</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="#createpubsub-driver-pubsub">createPubSub(driver?): PubSub</a><a class="toc-level-4" href="#pattern-matching">Pattern matching</a><a class="toc-level-4" href="#memorydriver-pubsubdriver">memoryDriver(): PubSubDriver</a><a class="toc-level-4" href="#wrnexus-pubsub-redis-redisdriver-url">@wrnexus/pubsub/redis — redisDriver(url?)</a><a class="toc-level-4" href="#resp-codec-internal">RESP codec (internal)</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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