info oaitools fix

[willccbb]

Description

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Test improvement

Testing

• All existing tests pass when running uv run pytest locally.
• New tests have been added to cover the changes

Checklist

• My code follows the style guidelines of this project as outlined in AGENTS.md
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published

Additional Notes

---

Note

Low Risk
Small, localized change to state initialization that only affects how oai_tools is sourced; low risk aside from potentially changing tool configuration precedence for some callers.

Overview
Fixes Environment.init_state tool discovery by robustly pulling oai_tools from input.info regardless of whether info is a dict (key lookup) or an object (attribute access), instead of incorrectly mixing hasattr with dict indexing.

This reduces crashes/incorrect defaults when initializing rollout state with tool configuration embedded in info, while preserving the existing fallback to self.oai_tools or an empty list.

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