chatlas 0.16.0

New features

• New ChatLMStudio() provider for chatting with local models via LM Studio. (#280)
• The .stream() and .stream_async() methods now yield ContentThinking objects (instead of plain strings) for thinking/reasoning content when content="all". This allows downstream packages like shinychat to provide specific UI for thinking content. (#276)
• Built-in tools (tool_web_search(), tool_web_fetch()) now include description and annotations properties, making their metadata consistent with user-defined tools created by Tool(). (#278)

Bug fixes

• Fixed OpenAI streaming crash (AttributeError: 'NoneType' object has no attribute 'output') caused by a new response.rate_limits.updated event emitted after response.completed. (#282)
• Fixed tool calling with Google thinking models (e.g., gemini-3-flash-preview) failing with a 400 INVALID_ARGUMENT error about a missing thought_signature. The signature is now preserved and forwarded in subsequent turns. (#274)
• OpenAI's web_search_call no longer errors on non-search action types like open_page and find_in_page. (#277)