fix: truncate ByteStream string representation

haystack/dataclasses/byte_stream.py

@@ -63,3 +63,10 @@ def to_string(self, encoding: str = "utf-8") -> str:
         :raises: UnicodeDecodeError: If the ByteStream data cannot be decoded with the specified encoding.
         """
         return self.data.decode(encoding)
+
+    def __str__(self) -> str:
+        """
+        Returns a string representation of the ByteStream, truncating the data to 1KB.
+        """
+        truncated = self.data[:1021] + b"..." if len(self.data) > 1024 else self.data
+        return f"ByteStream(data={truncated!r}, mime_type={self.mime_type!r}, meta={self.meta!r})"