Struct streamOptions

internal/llm/llm.go:85–87

streamOptions: without include_usage, OpenAI-compatible servers omit the usage block in the SSE tail chunk and the per-turn token counter sits at 0.

// streamOptions: without include_usage, OpenAI-compatible servers omit the
// usage block in the SSE tail chunk and the per-turn token counter sits at 0.
type streamOptions struct {
	IncludeUsage bool `json:"include_usage"`
}

// streamChunk is one OpenAI SSE frame. finish_reason is deliberately never