feat: automate guest notification triggers

app/Events/GuestPhotoUploaded.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Events;
+
+use App\Models\Event;
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+
+class GuestPhotoUploaded
+{
+    use Dispatchable;
+    use InteractsWithSockets;
+    use SerializesModels;
+
+    public function __construct(
+        public Event $event,
+        public int $photoId,
+        public string $guestIdentifier,
+        public ?string $guestName = null,
+    ) {}
+}