fix: use /vncproxy endpoint with websocket:0 parameter

The /vncproxy endpoint requires websocket: 0 (not -1) in the POST body.
Co-Authored-By: Claude <noreply@anthropic.com>

src/components/Dashboard.js

@@ -7,6 +7,7 @@ import VMList from './VMList';
 import LXCList from './LXCList';
 import axios from 'axios';
 import { SWRConfig } from 'swr';
+import ConsolePanel from './ConsolePanel';
 
 const POLL_INTERVAL = Number(process.env.NEXT_PUBLIC_API_POLL_INTERVAL || 30000);
 
@@ -31,6 +32,7 @@ async function fetchData(url) {
 /** @returns {import('react').ReactNode} */
 export default function Dashboard() {
   const [activeTab, setActiveTab] = useState('nodes');
+  const [activeConsole, setActiveConsole] = useState(null);
   const [powerActionStatus, setPowerActionStatus] = useState(null);
 
   /**
@@ -71,6 +73,7 @@ export default function Dashboard() {
     { id: 'nodes', label: 'Nodes' },
     { id: 'vms', label: 'VMs' },
     { id: 'lxc', label: 'LXCs' },
+    ...(activeConsole ? [{ id: 'console', label: `Console: ${activeConsole.name}` }] : []),
   ];
 
   return (
@@ -147,8 +150,11 @@ export default function Dashboard() {
       {/* Tab content */}
       <div>
         {activeTab === 'nodes' && <NodeList nodes={nodes} />}
-        {activeTab === 'vms' && <VMList vms={vms} onPowerAction={handlePowerAction} />}
-        {activeTab === 'lxc' && <LXCList lxc={lxc} onPowerAction={handlePowerAction} />}
+        {activeTab === 'vms' && <VMList vms={vms} onPowerAction={handlePowerAction} onOpenConsole={(vm) => { setActiveConsole(vm); setActiveTab('console'); }} />}
+        {activeTab === 'lxc' && <LXCList lxc={lxc} onPowerAction={handlePowerAction} onOpenConsole={(lxc) => { setActiveConsole(lxc); setActiveTab('console'); }} />}
+        {activeTab === 'console' && activeConsole && (
+          <ConsolePanel vm={activeConsole} onClose={() => setActiveConsole(null)} />
+        )}
       </div>
 
       {/* Footer */}