Function agent_loop_continue 

pub async fn agent_loop_continue(
    context: &mut AgentContext,
    config: &AgentLoopConfig,
    tx: UnboundedSender<AgentEvent>,
    cancel: CancellationToken,
) -> Vec<AgentMessage>

Resume an agent loop from existing context without new prompts.

Use for retries, session branching, or re-runs from a specific point. The context must be non-empty and must not end with an assistant message. New follow-up/steering messages can be injected via config.get_follow_up_messages / config.get_steering_messages.

Returns only the messages produced by this continuation call.