Method messages

crates/opencode-session/src/compaction.rs:1095–1097

(&self, _session_id: &str)

    impl SessionOps for MockSessionOps {
        async fn messages(&self, _session_id: &str) -> anyhow::Result<Vec<MessageWithParts>> {
            Ok(vec![])
        }

        async fn update_message(&self, info: MessageInfo) -> anyhow::Result<MessageInfo> {
            self.messages.lock().await.push(info.clone());