feat: exclusion groups for additional services

migrations/Version20260804120000.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20260804120000 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add exclusion group and exclusive flag to additional services';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // The default only backfills existing rows; it is dropped again so the column matches the mapping.
+        $this->addSql('ALTER TABLE additional_service ADD exclusion_group VARCHAR(128) DEFAULT NULL, ADD is_exclusive TINYINT(1) DEFAULT 0 NOT NULL');
+        $this->addSql('ALTER TABLE additional_service ALTER COLUMN is_exclusive DROP DEFAULT');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE additional_service DROP exclusion_group, DROP is_exclusive');
+    }
+}