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/egulias/email-validator/src/Warning/DomainLiteral.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Egulias\EmailValidator\Warning;
+
+class DomainLiteral extends Warning
+{
+    public const CODE = 70;
+
+    public function __construct()
+    {
+        $this->message = 'Domain Literal';
+        $this->rfcNumber = 5322;
+    }
+}