feat: add Import entity with batch tracking

migrations/Version20260329000002.php

@@ -0,0 +1,36 @@
+<?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 Version20260329000002 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 import (id INT GENERATED BY DEFAULT AS IDENTITY NOT NULL, user_id INT NOT NULL, file_path VARCHAR(255) NOT NULL, status VARCHAR(20) NOT NULL, total_batches INT NOT NULL, processed_batches INT NOT NULL, total_films INT NOT NULL, failed_films INT NOT NULL, created_at TIMESTAMP(0) WITHOUT TIME ZONE NOT NULL, completed_at TIMESTAMP(0) WITHOUT TIME ZONE DEFAULT NULL, PRIMARY KEY (id))');
+        $this->addSql('CREATE INDEX IDX_9D4ECE1DA76ED395 ON import (user_id)');
+        $this->addSql('COMMENT ON COLUMN import.created_at IS \'(DC2Type:datetime_immutable)\'');
+        $this->addSql('COMMENT ON COLUMN import.completed_at IS \'(DC2Type:datetime_immutable)\'');
+        $this->addSql('ALTER TABLE import ADD CONSTRAINT FK_9D4ECE1DA76ED395 FOREIGN KEY (user_id) REFERENCES "user" (id) NOT DEFERRABLE INITIALLY IMMEDIATE');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE import DROP CONSTRAINT FK_9D4ECE1DA76ED395');
+        $this->addSql('DROP TABLE import');
+    }
+}