docs(changelog): add v0.3.4 development entry for frontend audit

src/pages/changelog.astro

@@ -41,6 +41,7 @@ import BaseLayout from '../layouts/BaseLayout.astro';
                 Enhancements
               </h3>
               <ul class="changes-list">
+                <li><strong>Frontend Audit.</strong> Completed a full frontend audit: removed dead files, tightened up many functions, removed unused fonts, and made the codebase cleaner and leaner.</li>
                 <li><strong>Rust Backend.</strong> Did an audit of the Rust backend using the <a href="https://github.com/leonardomso/rust-skills" target="_blank" rel="noopener">Rust Skill</a>. Found and fixed a few bugs, memory optimizations and panic-prone locks.</li>
               </ul>
             </div>