Fix: Only pass reasoning_effort to models that support it

[hahnicity]

Summary

• reasoning_effort and verbosity are only supported by OpenAI reasoning models (o-series, GPT-5 family). Passing them to non-reasoning models like gpt-4o-mini causes a 400 BadRequestError: "Unrecognized request argument supplied: reasoning_effort"
• This change conditionally includes these parameters only when the model name indicates a reasoning model (o1, o3, o4, gpt-5 prefixes)

References

Per OpenAI's reasoning guide, reasoning_effort controls how many reasoning tokens a model generates, and supported values are "model-dependent." The gpt-4o-mini model page confirms it is not a reasoning model and does not support this parameter.

Test plan

• Verified gpt-4o-mini no longer returns 400 BadRequestError when used with Concordia
• Reasoning model prefixes (o1, o3, o4, gpt-5) will still pass reasoning_effort and verbosity as before

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[hahnicity]

Added a fix for a pre-existing pylint failure in world_state.py (unrelated to the original change in this PR).

The CI Test Concordia job was failing on pylint errors in concordia/components/game_master/world_state.py at lines 295, 298, and 301:

• E1135: Value 'self._valid_locations' doesn't support membership test
• E1133: Non-iterable value self._valid_locations is used in an iterating context

These errors occur because pylint does not narrow the type of self._valid_locations (typed set | None) after a None guard check on the instance attribute. The fix assigns to a local variable after the guard, which lets pylint correctly infer the non-None type. No behavioral change.

[jzleibo]

This looks good to me, we should be able to merge it once you've signed the Google CLA.