Allow partial event updates

tests/Feature/EventControllerTest.php

@@ -199,6 +199,29 @@ class EventControllerTest extends TenantTestCase
             ->assertJsonPath('error.code', 'event_limit_exceeded');
     }
 
+    public function test_update_event_settings_without_required_fields_succeeds(): void
+    {
+        $tenant = $this->tenant;
+        $eventType = EventType::factory()->create();
+        $event = Event::factory()->create([
+            'tenant_id' => $tenant->id,
+            'event_type_id' => $eventType->id,
+            'date' => Carbon::now()->subDays(2),
+            'name' => ['de' => 'Test Event', 'en' => 'Test Event'],
+            'settings' => [],
+        ]);
+
+        $response = $this->authenticatedRequest('PUT', "/api/v1/tenant/events/{$event->slug}", [
+            'settings' => [
+                'engagement_mode' => 'photo_only',
+            ],
+        ]);
+
+        $response->assertOk();
+        $event->refresh();
+        $this->assertSame('photo_only', data_get($event->settings, 'engagement_mode'));
+    }
+
     public function test_create_event_rejects_unavailable_service_tier_for_partner_kontingent(): void
     {
         $tenant = $this->tenant;