0.171.1

• Add eca_version to every hook's stdin payload, so hooks and plugins can adapt to the running ECA version. #697
• Fix tool calls with invalid JSON arguments ending the turn silently or as a connection error: the LLM now gets the error as the call's result and can retry.
• Fix toolCallRejected sending reason user for most rejections, and kebab-case for the rest: it now follows the protocol, with new hookStopped and invalidArguments.