feat(daemon): Add UPSD (NUT) protocol support, Proxmox VM shutdown action, pause/resume monitoring, and network-loss/unreachable handling; bump config version to 4.2

ts/nupst.ts

@@ -1,4 +1,5 @@
 import { NupstSnmp } from './snmp/manager.ts';
+import { NupstUpsd } from './upsd/client.ts';
 import { NupstDaemon } from './daemon.ts';
 import { NupstSystemd } from './systemd.ts';
 import denoConfig from '../deno.json' with { type: 'json' };
@@ -17,6 +18,7 @@ import type { INupstAccessor, IUpdateStatus } from './interfaces/index.ts';
  */
 export class Nupst implements INupstAccessor {
   private readonly snmp: NupstSnmp;
+  private readonly upsd: NupstUpsd;
   private readonly daemon: NupstDaemon;
   private readonly systemd: NupstSystemd;
   private readonly upsHandler: UpsHandler;
@@ -34,7 +36,8 @@ export class Nupst implements INupstAccessor {
     // Initialize core components
     this.snmp = new NupstSnmp();
     this.snmp.setNupst(this); // Set up bidirectional reference
-    this.daemon = new NupstDaemon(this.snmp);
+    this.upsd = new NupstUpsd();
+    this.daemon = new NupstDaemon(this.snmp, this.upsd);
     this.systemd = new NupstSystemd(this.daemon);
 
     // Initialize handlers
@@ -52,6 +55,13 @@ export class Nupst implements INupstAccessor {
     return this.snmp;
   }
 
+  /**
+   * Get the UPSD manager for NUT protocol communication
+   */
+  public getUpsd(): NupstUpsd {
+    return this.upsd;
+  }
+
   /**
    * Get the daemon manager for background monitoring
    */