feat : add task_collaborator migration

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

migrations/Version20260409075411.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20260409075411 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('CREATE TABLE task_collaborator (task_id INT NOT NULL, user_id INT NOT NULL, PRIMARY KEY (task_id, user_id))');
+        $this->addSql('CREATE INDEX IDX_A8FC6C518DB60186 ON task_collaborator (task_id)');
+        $this->addSql('CREATE INDEX IDX_A8FC6C51A76ED395 ON task_collaborator (user_id)');
+        $this->addSql('ALTER TABLE task_collaborator ADD CONSTRAINT FK_A8FC6C518DB60186 FOREIGN KEY (task_id) REFERENCES task (id) ON DELETE CASCADE NOT DEFERRABLE');
+        $this->addSql('ALTER TABLE task_collaborator ADD CONSTRAINT FK_A8FC6C51A76ED395 FOREIGN KEY (user_id) REFERENCES "user" (id) ON DELETE CASCADE NOT DEFERRABLE');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE task_collaborator DROP CONSTRAINT FK_A8FC6C518DB60186');
+        $this->addSql('ALTER TABLE task_collaborator DROP CONSTRAINT FK_A8FC6C51A76ED395');
+        $this->addSql('DROP TABLE task_collaborator');
+    }
+}