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/league/flysystem/src/ChecksumProvider.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace League\Flysystem;
+
+interface ChecksumProvider
+{
+    /**
+     * @return string MD5 hash of the file contents
+     *
+     * @throws UnableToProvideChecksum
+     * @throws ChecksumAlgoIsNotSupported
+     */
+    public function checksum(string $path, Config $config): string;
+}