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/vnc/route.js

@@ -0,0 +1,45 @@
+import { NextResponse } from 'next/server';
+import axios from 'axios';
+
+const PROXMOX_API_URL = process.env.PROXMOX_API_URL;
+const PROXMOX_WEB_URL = process.env.PROXMOX_WEB_URL || PROXMOX_API_URL?.replace('/api2/json', '');
+
+/** @param {import('next').Request} req */
+export async function GET(req) {
+  const url = new URL(req.url);
+  const node = url.searchParams.get('node');
+  const vmid = url.searchParams.get('vmid');
+  const type = url.searchParams.get('type');
+
+  if (!node || !vmid || !type) {
+    return NextResponse.json({ error: 'Missing node, vmid, or type' }, { status: 400 });
+  }
+
+  try {
+    const ticketRes = await axios({
+      url: `${PROXMOX_API_URL}/nodes/${node}/${type}/${vmid}/vncproxy`,
+      method: 'POST',
+      headers: {
+        Authorization: `PVEAPIToken=${process.env.PROXMOX_TOKEN_ID}=${process.env.PROXMOX_TOKEN_SECRET}`,
+        'Content-Type': 'application/json',
+      },
+      data: JSON.stringify({ websocket: 0 }),
+    });
+
+    const ticket = ticketRes.data?.ticket;
+
+    if (!ticket) {
+      return NextResponse.json(
+        { error: 'No VNC ticket returned from Proxmox API' },
+        { status: 502 },
+      );
+    }
+
+    const consoleUrl = `${PROXMOX_WEB_URL}/?vncticket=${encodeURIComponent(ticket)}&novnc=1&node=${encodeURIComponent(node)}&vmid=${vmid}`;
+
+    return NextResponse.json({ consoleUrl });
+  } catch (err) {
+    const msg = err.response?.data?.message || err.response?.data || err.message;
+    return NextResponse.json({ error: msg }, { status: 502 });
+  }
+}