allow openai CUA to take in an optional baseURL

[miguelg719]

why

OpenAI CUA only defaults to the openai base url api.openai.com/v1

what changed

Parametrized baseURL for openai cua

test plan

[changeset-bot]

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Latest commit: bda3f60

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[greptile-apps]

Greptile Summary

This PR adds support for an optional baseURL parameter to the OpenAICUAClient class, allowing users to specify custom OpenAI API endpoints instead of being restricted to the default api.openai.com/v1. The implementation follows the same pattern already established by the AnthropicCUAClient, creating consistency across agent clients in the codebase.

The changes involve three key modifications: (1) adding a private baseURL property to the class, (2) extracting the baseURL from clientOptions in the constructor with a fallback to undefined, and (3) conditionally setting it in the OpenAI client configuration only when provided. This approach maintains backward compatibility since the parameter is optional and defaults to undefined, allowing the OpenAI SDK to use its default endpoint when no custom URL is specified.

This enhancement addresses enterprise use cases where requests need to be routed through proxy servers, alternative OpenAI-compatible endpoints, or custom API gateways. The implementation is straightforward and mirrors established patterns in the codebase, ensuring consistency with how other agent clients handle base URL configuration.

PR Description Notes:

• The test plan section is empty and should include details about how the changes were tested

Confidence score: 4/5

• This PR is safe to merge with minimal risk as it adds optional functionality without breaking existing behavior
• Score reflects simple, well-patterned changes that follow existing codebase conventions and maintain backward compatibility
• No files require special attention as the implementation is straightforward and follows established patterns

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