Implement security overhaul: remove seal/legacy system, add Security modal and random passwords

Agent-Logs-Url: https://github.com/naturallaw777/staging_alpha/sessions/6e7593c4-f741-4ddc-9bce-8c558a4af014

Co-authored-by: naturallaw777 <99053422+naturallaw777@users.noreply.github.com>

app/sovran_systemsos_web/static/js/tiles.js

@@ -89,6 +89,18 @@ function renderSidebarSupport(supportServices) {
   backupBtn.addEventListener("click", function() { openBackupModal(); });
   $sidebarSupport.appendChild(backupBtn);
 
+  // ── Security button
+  var securityBtn = document.createElement("button");
+  securityBtn.className = "sidebar-support-btn";
+  securityBtn.innerHTML =
+    '<span class="sidebar-support-icon">\uD83D\uDEE1</span>' +
+    '<span class="sidebar-support-text">' +
+      '<span class="sidebar-support-title">Security</span>' +
+      '<span class="sidebar-support-hint">Reset &amp; verify system</span>' +
+    '</span>';
+  securityBtn.addEventListener("click", function() { openSecurityModal(); });
+  $sidebarSupport.appendChild(securityBtn);
+
   // ── Upgrade button (Node role only)
   if (_currentRole === "node") {
     var upgradeBtn = document.createElement("button");