feat: M2 database migration runner with Phinx and initial schema

db/seeds/DefaultDataSeed.php

@@ -0,0 +1,84 @@
+<?php
+
+declare(strict_types=1);
+
+use Phinx\Seed\AbstractSeed;
+
+/**
+ * Seed script for default reference data.
+ *
+ * Populates initial categories and tags. Safe to re-run (idempotent).
+ */
+final class DefaultDataSeed extends AbstractSeed
+{
+    public function run(): void
+    {
+        // Seed default categories
+        $categories = [
+            [
+                'name' => 'Aircraft',
+                'description' => 'Planes, helicopters, and drones',
+            ],
+            [
+                'name' => 'Automotive',
+                'description' => 'Cars, trucks, and vehicles',
+            ],
+            [
+                'name' => 'Characters',
+                'description' => 'Humanoid and creature models',
+            ],
+            [
+                'name' => 'Props',
+                'description' => 'Objects and accessories',
+            ],
+            [
+                'name' => 'Terrain',
+                'description' => 'Landscapes, buildings, and scenery',
+            ],
+            [
+                'name' => 'Tools',
+                'description' => 'Functional items and gadgets',
+            ],
+        ];
+
+        foreach ($categories as $category) {
+            $exists = $this->getAdapter()->fetchRow(
+                "SELECT id FROM categories WHERE name = '"
+                . $category['name'] . "'"
+            );
+            if (!$exists) {
+                $this->getAdapter()->execute(
+                    "INSERT INTO categories (name, description) VALUES ('"
+                    . $category['name'] . "', '"
+                    . $category['description'] . "')"
+                );
+            }
+        }
+
+        // Seed default tags
+        $tags = [
+            ['name' => 'wip'],
+            ['name' => 'completed'],
+            ['name' => 'high-poly'],
+            ['name' => 'low-poly'],
+            ['name' => 'print-ready'],
+            ['name' => 'needs-supports'],
+            ['name' => 'articulated'],
+            ['name' => 'modular'],
+            ['name' => 'multi-part'],
+            ['name' => 'single-piece'],
+        ];
+
+        foreach ($tags as $tag) {
+            $exists = $this->getAdapter()->fetchRow(
+                "SELECT id FROM tags WHERE name = '" . $tag['name'] . "'"
+            );
+            if (!$exists) {
+                $this->getAdapter()->execute(
+                    "INSERT INTO tags (name) VALUES ('" . $tag['name'] . "')"
+                );
+            }
+        }
+    }
+}
+