Finalize tl_search migration with proper shouldRun check

src/Migration/ExtendTlSearchMigration.php

@@ -8,30 +8,52 @@ use Doctrine\DBAL\Connection;
 
 class ExtendTlSearchMigration implements MigrationInterface
 {
-    public function __construct(private readonly Connection $connection)
+    public function __construct(
-    {
+        private readonly Connection $connection
+    ) {
     }
 
+    /**
+     * Eindeutiger Name der Migration
+     */
     public function getName(): string
     {
         return 'mummert_media_extend_tl_search';
     }
 
+    /**
+     * Läuft nur, solange mindestens eine der Spalten fehlt
+     */
     public function shouldRun(): bool
     {
-        // Wir lassen MySQL entscheiden – kein Schema-Precheck
+        $existingColumns = (int) $this->connection->fetchOne(
-        return true;
+            <<<SQL
+SELECT COUNT(*)
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = DATABASE()
+  AND TABLE_NAME = 'tl_search'
+  AND COLUMN_NAME IN ('keywords', 'priority', 'imagepath', 'startDate')
+SQL
+        );
+
+        // Wir erwarten genau 4 Spalten
+        return $existingColumns < 4;
     }
 
+    /**
+     * Fügt die Spalten hinzu (idempotent)
+     */
     public function run(): MigrationResult
     {
-        $this->connection->executeStatement(<<<SQL
+        $this->connection->executeStatement(
+            <<<SQL
 ALTER TABLE tl_search
     ADD COLUMN IF NOT EXISTS keywords   varchar(255) NOT NULL DEFAULT '',
     ADD COLUMN IF NOT EXISTS priority   int(1)       NOT NULL DEFAULT 2,
     ADD COLUMN IF NOT EXISTS imagepath  varchar(512) NOT NULL DEFAULT '',
     ADD COLUMN IF NOT EXISTS startDate  bigint(20)   NOT NULL DEFAULT 0
-SQL);
+SQL
+        );
 
         return new MigrationResult(
             true,