docs(changelog): add smooth scrolling and canvas repaint enhancements

- Improved CodeMirror scrolling experience
- Added canvas repaint hook for Linux/X11/Openbox environments

src/pages/changelog.astro

@@ -43,6 +43,8 @@ import BaseLayout from '../layouts/BaseLayout.astro';
                 Enhancements
               </h3>
               <ul class="changes-list">
+                <li><strong>CodeMirror.</strong> Made the scrolling feel smoother.</li>
+                <li><strong>Canvas.</strong> Added a hook to repaint the canvas, especially on Linux/X11/Openbox.</li>
                 <li><strong>Local AI.</strong> Zaguán Blade now supports Gemma 4 with Local AI (Ollama and OpenAI-compat).</li>
               </ul>
             </div>