use crate::legacy_core::config::Config;use chrono::DateTime;use chrono::Utc;use serde::Deserialize;use serde::Serialize;use std::path::Path;use std::path::PathBuf;#[derive(Serialize, Deserialize, Debug, Clone)]pub(crate) struct VersionInfo {    pub(crate) latest_version: String,    // ISO-8601 timestamp (RFC3339)    pub(crate) last_checked_at: DateTime<Utc>,    #[serde(default)]    pub(crate) dismissed_version: Option<String>,}const VERSION_FILENAME: &str = "version.json";pub(crate) fn version_filepath(config: &Config) -> PathBuf {    config.codex_home.join(VERSION_FILENAME).into_path_buf()}pub(crate) fn read_version_info(version_file: &Path) -> anyhow::Result<VersionInfo> {    let contents = std::fs::read_to_string(version_file)?;    Ok(serde_json::from_str(&contents)?)}/// Persist a dismissal for the current latest version so we don't show/// the update popup again for this version.pub(crate) async fn dismiss_version(config: &Config, version: &str) -> anyhow::Result<()> {    let version_file = version_filepath(config);    let mut info = match read_version_info(&version_file) {        Ok(info) => info,        Err(_) => VersionInfo {            latest_version: version.to_string(),            last_checked_at: DateTime::<Utc>::UNIX_EPOCH,            dismissed_version: None,        },    };    info.dismissed_version = Some(version.to_string());    let json_line = format!("{}\n", serde_json::to_string(&info)?);    if let Some(parent) = version_file.parent() {        tokio::fs::create_dir_all(parent).await?;    }    tokio::fs::write(version_file, json_line).await?;    Ok(())}#[cfg(test)]#[path = "updates_cache_tests.rs"]mod tests;