[FEATURE]: Opencode Go available Model Support for OpenAI and Anthropic SDKs

[mannbadal]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

Currently, only some Opencode Go models are supported with the OpenAI and Anthropic SDKs. This feature requests that all officially-listed Opencode Go models (see https://opencode.ai/docs/go/) be fully supported via both the OpenAI and Anthropic SDK integrations.

Enhancing coverage will ensure teams can access the full suite of Opencode Go models regardless of SDK preference. This will benefit users requiring a consistent model set in hybrid or multi-provider environments and reduce friction when new models are added to Opencode Go. Implementation should:

• Ensure all documented Go models can be used via both SDKs
• Expand tests to verify all Go models work as expected in either backend
• Update documentation and config examples to show complete compatibility
• Consider ways to automate or test coverage for new model releases if possible

[github-actions]

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