fix: handle stdio properly

src/StreamReadable.php

@@ -9,20 +9,40 @@ trait StreamReadable
     /**
      * @param resource $stream
      */
-    public function __construct(private $stream)
+    public function __construct(public readonly mixed $stream)
     {
     }
 
     public function read(int $length): ?string
     {
+        if (!is_resource($this->stream)) {
+            throw new CommandException('Cannot read from closed stream');
+        }
+
         return fread($this->stream, $length) ?: null;
     }
 
     public function getContents(?int $length = null, int $offset = -1): ?string
     {
+        if (!is_resource($this->stream)) {
+            throw new CommandException('Cannot read from closed stream');
+        }
+
         $contents = stream_get_contents($this->stream, $length, $offset);
         return $contents === false
             ? null
             : $contents;
     }
+
+    public function close(): bool
+    {
+        return is_resource($this->stream)
+            ? fclose($this->stream)
+            : true;
+    }
+
+    public function __destruct()
+    {
+        $this->close();
+    }
 }