Anthropic Claude Sonnet 4.5 (#86)

[Gemini] Tools support (#85)

add support for claude 4.1 opus (#84)

OpenAI GPT-5 support (#82)

[bugfix] Anthropic no tools payload (#83)

[bugfix] Re-implement `OpenAIFile` trait methods in `assistant` module (

#81)

[bugfix] Backwards compatibility for OpenAIFile (#80)

Anthropic tools (#74)

xAI Grok (#77)

[bugfix] Only use Vertex env vars when needed (#76)