feat: Optimize image handling for OnTicket tenant

- Added migration to optimize OnTicket images using OptimizeOnticketImagesSeeder.
- Updated OnTicketTenantSeeder to reference optimized image formats (AVIF).
- Modified OnticketImmersiveHeroCarouselSeeder to use AVIF images for hero carousel.
- Created OptimizeOnticketImagesSeeder to replace existing attachments with optimized images.
- Adjusted TestEventsSeeder to utilize AVIF images for events.
- Updated tests to verify the correct image formats and ensure optimized images are stored.
- Added new image files in AVIF format for logos, backgrounds, and event images.

database/migrations/2026_09_22_000000_optimize_onticket_images.php

@@ -0,0 +1,23 @@
+<?php
+
+use Database\Seeders\OptimizeOnticketImagesSeeder;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\Storage;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        if (app()->environment('testing')) {
+            Storage::fake('s3');
+        }
+
+        app(OptimizeOnticketImagesSeeder::class)->run();
+    }
+
+    public function down(): void
+    {
+        // The optimized attachments may already be in active use. Keep this
+        // data migration irreversible instead of restoring heavier assets.
+    }
+};