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/react/promise/src/Exception/CompositeException.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace React\Promise\Exception;
+
+/**
+ * Represents an exception that is a composite of one or more other exceptions.
+ *
+ * This exception is useful in situations where a promise must be rejected
+ * with multiple exceptions. It is used for example to reject the returned
+ * promise from `some()` and `any()` when too many input promises reject.
+ */
+class CompositeException extends \Exception
+{
+    /** @var \Throwable[] */
+    private $throwables;
+
+    /** @param \Throwable[] $throwables */
+    public function __construct(array $throwables, string $message = '', int $code = 0, ?\Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+
+        $this->throwables = $throwables;
+    }
+
+    /**
+     * @return \Throwable[]
+     */
+    public function getThrowables(): array
+    {
+        return $this->throwables;
+    }
+}

vendor/react/promise/src/Exception/LengthException.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace React\Promise\Exception;
+
+class LengthException extends \LengthException
+{
+}