feat: add app and database modules

app/Jobs/Monitoring/WorkerHeartbeatJob.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Jobs\Monitoring;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Foundation\Bus\Dispatchable;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Support\Facades\Cache;
+
+class WorkerHeartbeatJob implements ShouldQueue
+{
+    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
+
+    /**
+     * Create a new job instance.
+     */
+    public function __construct()
+    {
+        //
+    }
+
+    /**
+     * Execute the job.
+     */
+    public function handle(): void
+    {
+        // Update the heartbeat timestamp in cache
+        Cache::put('queue_worker_heartbeat', now()->timestamp, 600); // 10 minutes TTL
+    }
+}