- Provider preset registry (fastaiagent.llm.providers) — 12 seed presets,
  native Gemini wire, capability fallbacks, per-preset env-var resolution.
- Deterministic agent testing (fastaiagent.testing) — TestModel,
  FunctionModel, pytest plugin (@case, @pytest_dataset, evaluate_one).

PyPI: https://pypi.org/project/fastaiagent/1.8.0/
PR:   https://github.com/fastaifoundry/fastaiagent-sdk/pull/67