Add settings-driven theme and version metadata

api/migrations/Version20251224191500.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20251224191500 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Convert settings table to key/value rows for version/build.';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('CREATE TABLE settings_new (id INT AUTO_INCREMENT NOT NULL, `key` VARCHAR(100) NOT NULL, value LONGTEXT NOT NULL, UNIQUE INDEX UNIQ_SETTINGS_KEY (`key`), PRIMARY KEY(id))');
+        $this->addSql("INSERT INTO settings_new (`key`, value) SELECT 'version', version FROM settings LIMIT 1");
+        $this->addSql("INSERT INTO settings_new (`key`, value) SELECT 'build', CAST(build AS CHAR) FROM settings LIMIT 1");
+        $this->addSql('DROP TABLE settings');
+        $this->addSql('RENAME TABLE settings_new TO settings');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('CREATE TABLE settings_old (id INT AUTO_INCREMENT NOT NULL, version VARCHAR(20) NOT NULL, build INT NOT NULL, PRIMARY KEY(id))');
+        $this->addSql("INSERT INTO settings_old (id, version, build) VALUES (1, (SELECT value FROM settings WHERE `key` = 'version' LIMIT 1), CAST((SELECT value FROM settings WHERE `key` = 'build' LIMIT 1) AS UNSIGNED))");
+        $this->addSql('DROP TABLE settings');
+        $this->addSql('RENAME TABLE settings_old TO settings');
+    }
+}