Function was_plan_agent

crates/opencode-session/src/prompt.rs:3073–3081

(messages: &[SessionMessage])

}

pub fn was_plan_agent(messages: &[SessionMessage]) -> bool {
    messages.iter().any(|m| {
        if let Some(agent) = m.metadata.get("agent") {
            agent.as_str() == Some("plan")
        } else {
            false
        }
    })
}

pub struct ResolvedTool {
    pub name: String,