Fix bin/publish: copy docs.dist from project root

Fix bin/publish: use correct .env path for rspade_system
Fix bin/publish script: prevent grep exit code 1 from terminating script

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

vendor/doctrine/dbal/src/TransactionIsolationLevel.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\DBAL;
+
+final class TransactionIsolationLevel
+{
+    /**
+     * Transaction isolation level READ UNCOMMITTED.
+     */
+    public const READ_UNCOMMITTED = 1;
+
+    /**
+     * Transaction isolation level READ COMMITTED.
+     */
+    public const READ_COMMITTED = 2;
+
+    /**
+     * Transaction isolation level REPEATABLE READ.
+     */
+    public const REPEATABLE_READ = 3;
+
+    /**
+     * Transaction isolation level SERIALIZABLE.
+     */
+    public const SERIALIZABLE = 4;
+
+    /** @codeCoverageIgnore */
+    private function __construct()
+    {
+    }
+}