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/psr/http-factory/src/ResponseFactoryInterface.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Psr\Http\Message;
+
+interface ResponseFactoryInterface
+{
+    /**
+     * Create a new response.
+     *
+     * @param int $code HTTP status code; defaults to 200
+     * @param string $reasonPhrase Reason phrase to associate with status code
+     *     in generated response; if none is provided implementations MAY use
+     *     the defaults as suggested in the HTTP specification.
+     *
+     * @return ResponseInterface
+     */
+    public function createResponse(int $code = 200, string $reasonPhrase = ''): ResponseInterface;
+}