feat(monitor): show nginx telemetry in monitor cards

src/pages/MonitorPage.tsx

@@ -13,6 +13,8 @@ interface ServerRow {
   disk_pct?: number | null
   swap_pct?: number | null
   agents: Array<{ id?: string; name?: string; status?: string }>
+  nginx_installed?: boolean | null
+  nginx_sites?: string[]
   last_seen_at?: string | null
 }
 
@@ -154,8 +156,12 @@ export default function MonitorPage() {
                   CPU {s.cpu_pct ?? '-'}% · MEM {s.mem_pct ?? '-'}% · DISK {s.disk_pct ?? '-'}% · SWAP {s.swap_pct ?? '-'}%
                 </div>
                 <div className="text-dim">OpenClaw: {s.openclaw_version || '-'}</div>
-                <div className="text-dim">Plugin: {s.plugin_version || '-'}</div>
+                <div className="text-dim">Client: {s.plugin_version || '-'}</div>
                 <div className="text-dim">Agents: {s.agents?.length || 0}</div>
+                <div className="text-dim">Nginx: {s.nginx_installed == null ? '-' : s.nginx_installed ? 'installed' : 'not detected'}</div>
+                {!!s.nginx_sites?.length && (
+                  <div className="text-dim">Sites: {s.nginx_sites.join(', ')}</div>
+                )}
               </div>
             ))}
           </div>