fix: WolfUSB page not rendering — add page-wolfusb div and fix element ID

Author: Paul C

web/index.html

@@ -5227,6 +5227,8 @@ <h3>CephFS Filesystems</h3>
         </div>
 
         <!-- ═══ Wolfram Memory Compression ═══ -->
+        <div id="page-wolfusb" class="page-view" style="display:none;"></div>
+
         <div id="page-wolfram" class="page-view" style="display:none;">
             <!-- Install banner (shown when not installed) -->
             <div id="wolfram-setup-banner" style="display:none;">

web/js/app.js

@@ -34445,7 +34445,7 @@ async function wolframSaveConfig() {
 // ═══════════════════════════════════════════════
 
 async function loadWolfUsbPage() {
-    var el = document.getElementById('page-content');
+    var el = document.getElementById('page-wolfusb');
     if (!el) return;
 
     el.innerHTML = '<div style="text-align:center;padding:40px;color:var(--text-muted);">Loading USB Sharing...</div>';