add discord invite button in UI

webui/src/components/ModeGateOverlay.jsx

@@ -1,5 +1,6 @@
 import AuthPanel from './AuthPanel.jsx';
 import { useSession } from '../context/SessionContext.jsx';
+import DiscordInviteButton from './DiscordInviteButton.jsx';
 
 const PRIVILEGED_ROLES = new Set(['admin', 'lockdown', 'lockdown-admin']);
 const RESTRICTED_MODES = new Set(['admin', 'lockdown']);
@@ -42,6 +43,9 @@ export default function ModeGateOverlay() {
         <div className="surface-muted">
           <AuthPanel />
         </div>
+        <div className='w-full justify-center items-center'>
+          <DiscordInviteButton text='Join our Discord server for updates!'/>
+        </div>
         {/* <p className="text-xs text-slate-500">
           Your controls are paused until access is granted. You will automatically regain the interface once the mode
           changes or after a successful login.