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   </section>
 
   <!-- ── Commands ── -->
+  <section id="interface-modes">
+    <h2>🖥 Interface modes</h2>
+    <p>newOS4 ships six interfaces over the same terminal. Switch any time — <code>classic</code> is the original layout.</p>
+    <ul>
+      <li><code>ui</code> — list the modes and show usage</li>
+      <li><code>ui easy</code> — four action cards and bubble chat; nothing to memorise</li>
+      <li><code>ui chat</code> — single-column conversation with slash chips</li>
+      <li><code>ui studio</code> — chat plus a files / preview / editor pane</li>
+      <li><code>ui workspace</code> — card grid of live panes (files, heap, modules, agents, cron, errors)</li>
+      <li><code>ui commander</code> — terminal with side rails and a Ctrl-K command palette</li>
+      <li><code>ui cockpit</code> — eight live /sys panes plus a terminal strip, 5 s refresh</li>
+      <li><code>ui next</code> — cycle · <code>ui picker</code> — the chooser · <code>ui classic</code> — back</li>
+    </ul>
+  </section>
+
   <section id="commands">
       <p>📖 <b>New to feedback?</b> <a href="/feedback-guide.html">How feedback works</a> — which channel to use, what gets sent, and when to expect an answer.</p>