ToolStrategy

This release introduces new features like exposing `trace_policy` on `AgentMiddleware` and adding `reasoning_effort` as a chat model parameter. It also includes several bug fixes, such as preserving history on summarization failures and handling malformed structured-output responses.

This release introduces significant updates to streaming protocols (v2 and v3), enhances agent capabilities with new middleware features, and includes numerous dependency bumps and bug fixes across various components.

This release focuses on minor dependency upgrades, linting, and introduces `ToolCallRequest` to middleware exports, alongside a fix for agent factory name mismatches.