Enum Call 

pub enum Call {
    Model(Box<CallModel>),
    Decision(Box<CallDecision>),
}

Work dispatched through one host handler, with a typed reply channel per variant. drive handles terminal outcomes separately; the handler only executes calls.

Variants

Model(Box<CallModel>)

Fulfilled with an LLM Response.

Decision(Box<CallDecision>)

Fulfilled with a DecisionResponse.