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/Command/ExitCommand.php

@@ -0,0 +1,54 @@
+<?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\Command;
+
+use Psy\Exception\BreakException;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Exit the Psy Shell.
+ *
+ * Just what it says on the tin.
+ */
+class ExitCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('exit')
+            ->setAliases(['quit', 'q'])
+            ->setDefinition([])
+            ->setDescription('End the current session and return to caller.')
+            ->setHelp(
+                <<<'HELP'
+End the current session and return to caller.
+
+e.g.
+<return>>>> exit</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @return int 0 if everything went fine, or an exit code
+     */
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        throw new BreakException('Goodbye');
+    }
+}