- Integrate for Grok models and for OpenRouter into the AI client factory ().
- Install necessary provider dependencies (, , and other related packages, updated core).
- Update environment variable checks () and client creation logic () for the new providers.
- Add and correct unit tests in to cover xAI and OpenRouter instantiation, error handling, and environment variable resolution.
- Corrected mock paths and names in tests to align with official package names.
- Verify all tests (28 total) pass for .
- Confirm test coverage remains high (~90%) after additions.
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