feat(skeleton) : drop skeleton JSON columns from model_types

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

migrations/Version20260312180000.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Drop skeleton JSON columns from model_types — data now lives in
+ * skeleton_piece_requirements, skeleton_product_requirements,
+ * skeleton_subcomponent_requirements and custom_fields tables.
+ */
+final class Version20260312180000 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Drop componentSkeleton, pieceSkeleton, productSkeleton JSON columns from model_types';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE model_types DROP COLUMN IF EXISTS componentskeleton');
+        $this->addSql('ALTER TABLE model_types DROP COLUMN IF EXISTS pieceskeleton');
+        $this->addSql('ALTER TABLE model_types DROP COLUMN IF EXISTS productskeleton');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE model_types ADD COLUMN IF NOT EXISTS componentskeleton JSON DEFAULT NULL');
+        $this->addSql('ALTER TABLE model_types ADD COLUMN IF NOT EXISTS pieceskeleton JSON DEFAULT NULL');
+        $this->addSql('ALTER TABLE model_types ADD COLUMN IF NOT EXISTS productskeleton JSON DEFAULT NULL');
+    }
+}