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/nikic/php-parser/lib/PhpParser/Builder.php

@@ -0,0 +1,12 @@
+<?php declare(strict_types=1);
+
+namespace PhpParser;
+
+interface Builder {
+    /**
+     * Returns the built node.
+     *
+     * @return Node The built node
+     */
+    public function getNode(): Node;
+}