langchain-ai/langchainjs @langchain/google@0.2.3

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Patch Changes

• #11405 8cfff4d Thanks @hntrl! - Add LangSmith gateway support for Google Gemini (Developer API) models. When LANGSMITH_GATEWAY is set, ChatGoogleGenerativeAI and ChatGoogle (and initChatModel("google-genai:...")) route requests through the gateway's Gemini path, using the gateway key (falling back to LANGSMITH_API_KEY). An explicit baseUrl/endpoint, an explicit apiKey, or a Vertex AI configuration suppress gateway routing. Also adds GEMINI_API_KEY as a fallback env var for ChatGoogleGenerativeAI.