OpenAI Dialog: Extend Session Update Service Event to include all fields that make

[pragmatrix]

sense to be changed.

[Copilot]

Pull Request Overview

This PR extends the session update flow to carry all relevant parameters—including instructions, voice, temperature, tools, and a newly added toolChoice—through the SessionUpdate event.

• Import and wire up ToolChoice in the types import and Params struct
• Add tool_choice handling in Params, the client’s send path, and the ServiceInputEvent::SessionUpdate variant
• Update the client’s event dispatch to include tool_choice in outgoing SessionUpdate events

Comments suppressed due to low confidence (3)

services/openai-dialog/src/lib.rs:48

• If your JSON uses camelCase for this field, add #[serde(rename = "toolChoice")] to tool_choice for consistency with other parameters.

    tool_choice: Option<ToolChoice>,

services/openai-dialog/src/lib.rs:283

• Add a unit or integration test to verify that tool_choice makes it through Params into the outgoing SessionUpdate event.

            if let Some(tool_choice) = params.tool_choice {

services/openai-dialog/src/lib.rs:48

• [nitpick] Consider documenting the purpose of tool_choice in Params so users know what values are expected and how it's used downstream.

    tool_choice: Option<ToolChoice>,