feat(tenant): add Desfile footer background asset migration

- Add footer background image for Desfile Pura Tendencia
- Upload and associate the asset with the tenant during migration
- Extend migration coverage to verify attachment creation and storage

tests/Feature/Migrations/CreateDesfilePuraTendenciaTenantTest.php

@@ -31,6 +31,11 @@ class CreateDesfilePuraTendenciaTenantTest extends TestCase
         );
         $migration->up();
 
+        $footerBackgroundMigration = require database_path(
+            'migrations/2026_08_12_060000_set_desfile_footer_background_image.php'
+        );
+        $footerBackgroundMigration->up();
+
         $this->assertDatabaseHas('tenants', [
             'codigo' => 'desfile_pura_tendencia',
             'nombre' => 'Desfile Pura Tendencia',
@@ -85,11 +90,20 @@ class CreateDesfilePuraTendenciaTenantTest extends TestCase
             'filename' => 'desfile_pura_tendencia_hero.png',
             'type' => 'image',
         ]);
+        $footerBackgroundImageId = DB::table('tenants')
+            ->where('codigo', 'desfile_pura_tendencia')
+            ->value('footer_bg_image_id');
+        $this->assertDatabaseHas('attachments', [
+            'id' => $footerBackgroundImageId,
+            'filename' => 'desfile_pura_tendencia_footer_background.png',
+            'type' => 'image',
+        ]);
 
         foreach ([
             'desfile_pura_tendencia_header.png',
             'desfile_pura_tendencia_footer.png',
             'desfile_pura_tendencia_hero.png',
+            'desfile_pura_tendencia_footer_background.png',
             'entrada_pasarela.png',
         ] as $filename) {
             $path = DB::table('attachments')->where('filename', $filename)->value('path');