feat: allow overlapping assignments via flag set on individual teamers

migrations/Version20251215135758.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20251215135758 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add allow_overlapping_applications column to teamer table';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE teamer ADD allow_overlapping_applications TINYINT(1) NOT NULL DEFAULT 0');
+    }
+
+    public function postUp(Schema $schema): void
+    {
+        $this->connection->executeStatement('UPDATE teamer SET allow_overlapping_applications = 0');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE teamer DROP allow_overlapping_applications');
+    }
+}