Method with_model

crates/opencode-agent/src/agent.rs:390–402

(
        mut self,
        model_id: impl Into<String>,
        provider_id: impl Into<String>,
    )

    }

    pub fn with_model(
        mut self,
        model_id: impl Into<String>,
        provider_id: impl Into<String>,
    ) -> Self {
        let model = ModelRef {
            model_id: model_id.into(),
            provider_id: provider_id.into(),
        };
        self.model_preference = Some(model.clone());
        self.model = Some(model);
        self
    }

    pub fn with_system_prompt(mut self, prompt: impl Into<String>) -> Self {
        self.system_prompt = Some(prompt.into());