mention editor setup in main tutorial

public/pages/sites.html

@@ -148,6 +148,11 @@ <h2>Project</h2>
                 <dt>/public/styles/</dt>
                 <dd>The global styles referenced from <code>index.css</code>, as explained on the styling page.</dd>
             </dl>
+            <p>
+                Configuration files for a smoother workflow in programmer's editors also belong in the project's root.
+                Most of the development experience of a framework-based project is possible without a build step through editor extensions.
+                See the <a href="../blog/articles/2024-10-20-editing-plain-vanilla/">Visual Studio Code setup</a> for this site for an example.
+            </p>
         </section>
         <section id="routing">
             <a href="#routing" class="section-anchor">#</a>