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

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

vendor/psy/psysh/src/Exception/UnexpectedTargetException.php

@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2023 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Exception;
+
+class UnexpectedTargetException extends RuntimeException
+{
+    /** @var mixed */
+    private $target;
+
+    /**
+     * @param mixed           $target
+     * @param string          $message  (default: "")
+     * @param int             $code     (default: 0)
+     * @param \Throwable|null $previous (default: null)
+     */
+    public function __construct($target, string $message = '', int $code = 0, ?\Throwable $previous = null)
+    {
+        $this->target = $target;
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getTarget()
+    {
+        return $this->target;
+    }
+}