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/InvalidVisibilityProvided.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace League\Flysystem;
+
+use InvalidArgumentException;
+
+use function var_export;
+
+class InvalidVisibilityProvided extends InvalidArgumentException implements FilesystemException
+{
+    public static function withVisibility(string $visibility, string $expectedMessage): InvalidVisibilityProvided
+    {
+        $provided = var_export($visibility, true);
+        $message = "Invalid visibility provided. Expected {$expectedMessage}, received {$provided}";
+
+        throw new InvalidVisibilityProvided($message);
+    }
+}