fix (gemini): premature client close error when using gemini models in chat

[bjoaquinc]

📝 Summary

This PR fixes the issue of premature client closing for all gemini models which is a blocking issue for using gemini with chat.

🔍 Description of Changes

• Add _client variable in GoogleProvider
• Update get_client() to cache client when first invoked, then reuse the cached client to ensure that between stream iters, the same GoogleClient is used and and the client will not be closed prematurely.
• Also add ignore to return type error for google since it doesn't affect functionality but throws a type error.

📋 Checklist

• I have read the contributor guidelines.
• For large changes, or changes that affect the public API: this change was discussed or approved through an issue, on Discord, or the community discussions (Please provide a link if applicable).
• I have added tests for the changes made.
• I have run the code and verified that it works as expected.

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Project	Deployment	Preview	Comments	Updated (UTC)
marimo-docs	Ready	Preview	Comment	Oct 1, 2025 7:25pm