Agents API (beta): create, get, update, delete, list agents with tools,
handoffs, completion args, and guardrails support.
Conversations API (beta): create, append, history, messages, restart,
delete, list conversations. Supports agent-backed and model-only
conversations with function calling and handoff execution modes.
Multimodal: ChatMessageContent enum (Text/Parts) with ContentPart
variants for text and image_url. Backwards-compatible constructors.
new_user_message_with_images() for mixed content messages.
Chat: reasoning field on ChatResponseChoice for Magistral models.
HTTP: PATCH methods for agent updates.
81 tests (30 live API integration + 35 serde unit + 16 existing).
- Use Model::mistral_small_latest() instead of enum variants
- Use Model::mistral_embed() instead of EmbedModel::MistralEmbed
- Use serde_json::json!() for tool parameter schemas
- Update ChatParams for Option<f32> temperature field
- Update streaming test comments for new delta.content type
* feat(Model)!: Update model constants
- Add new models Mistral Nemo and Codestral Mamba
- Add aliases to models constant to be deserialized seemlessly from the versioned forme (e.g.: "mistral-large-2407")
- The commonly named Mistral Large 2 is now `constants::Model::MistralLargeLatest` when the old one is `Model::MistralLarge`
* tests(Model): Update the tests to check the new model variants.
