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/symfony/process/Exception/ProcessSignaledException.php

@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Exception;
+
+use Symfony\Component\Process\Process;
+
+/**
+ * Exception that is thrown when a process has been signaled.
+ *
+ * @author Sullivan Senechal <soullivaneuh@gmail.com>
+ */
+final class ProcessSignaledException extends RuntimeException
+{
+    private Process $process;
+
+    public function __construct(Process $process)
+    {
+        $this->process = $process;
+
+        parent::__construct(\sprintf('The process has been signaled with signal "%s".', $process->getTermSignal()));
+    }
+
+    public function getProcess(): Process
+    {
+        return $this->process;
+    }
+
+    public function getSignal(): int
+    {
+        return $this->getProcess()->getTermSignal();
+    }
+}