use std::path::Path;use codex_app_server_protocol::ServerNotification;use codex_core::config::Config;use codex_protocol::protocol::SessionConfiguredEvent;#[derive(Debug, Clone, Copy, PartialEq, Eq)]pub enum CodexStatus {    Running,    InitiateShutdown,}pub(crate) trait EventProcessor {    /// Print summary of effective configuration and user prompt.    fn print_config_summary(        &mut self,        config: &Config,        prompt: &str,        session_configured: &SessionConfiguredEvent,    );    /// Handle a single typed app-server notification emitted by the agent.    fn process_server_notification(&mut self, notification: ServerNotification) -> CodexStatus;    /// Handle a local exec warning that is not represented as an app-server notification.    fn process_warning(&mut self, message: String) -> CodexStatus;    fn print_final_output(&mut self) {}}pub(crate) fn handle_last_message(last_agent_message: Option<&str>, output_file: &Path) {    let message = last_agent_message.unwrap_or_default();    write_last_message_file(message, Some(output_file));    if last_agent_message.is_none() {        eprintln!(            "Warning: no last agent message; wrote empty content to {}",            output_file.display()        );    }}fn write_last_message_file(contents: &str, last_message_path: Option<&Path>) {    if let Some(path) = last_message_path        && let Err(e) = std::fs::write(path, contents)    {        eprintln!("Failed to write last message file {path:?}: {e}");    }}