Struct TrackedStream 

pub struct TrackedStream {
    pub model_used: String,
    pub trace_id: String,
    pub events: Receiver<StreamEvent>,
}

Handle returned by InferenceEngine::generate_tracked_stream: the event receiver plus the stream-level metadata a caller needs to attribute the finished turn. trace_id is the same trace the tap task resolves on completion, so a caller can score the turn against it; model_used is the resolved model. In-process only (the receiver isn’t serializable) — the wire layer forwards events and surfaces these fields on the final response itself.

Fields

model_used: String

Resolved model id for this stream.

trace_id: String

Trace id (minted before the first token) the tap resolves on completion.

events: Receiver<StreamEvent>

The forwarded event stream.