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/league/config/src/Exception/UnknownOptionException.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/config package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\Config\Exception;
+
+use Throwable;
+
+final class UnknownOptionException extends \InvalidArgumentException implements ConfigurationExceptionInterface
+{
+    private string $path;
+
+    public function __construct(string $message, string $path, int $code = 0, ?Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+
+        $this->path = $path;
+    }
+
+    public function getPath(): string
+    {
+        return $this->path;
+    }
+}