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/app/api/lxc/route.js

@@ -2,6 +2,7 @@ import { NextResponse } from 'next/server';
 import { getNodes, getLXC } from '@/lib/proxmox';
 
 const PROXMOX_WEB_URL = process.env.PROXMOX_WEB_URL || process.env.PROXMOX_API_URL?.replace('/api2/json', '');
+const PROXMOX_CONSOLE_TOKEN = process.env.PROXMOX_CONSOLE_TOKEN || process.env.PROXMOX_TOKEN_ID;
 
 /** @param {import('next').Request} _req */
 export async function GET(_req) {
@@ -16,7 +17,7 @@ export async function GET(_req) {
           ...lxcs.map((lxc) => ({
             ...lxc,
             node: node.name,
-            consoleUrl: `${PROXMOX_WEB_URL}/?console=lxc&novnc=1&node=${encodeURIComponent(node.name)}&vmid=${lxc.vmid}`,
+            consoleUrl: `${PROXMOX_WEB_URL}/?console=lxc&novnc=1&node=${encodeURIComponent(node.name)}&vmid=${lxc.vmid}&token=${encodeURIComponent(PROXMOX_CONSOLE_TOKEN)}`,
           })),
         );
       } catch { /* skip node */ }