use std::process::Command;use anyhow::Result;use tempfile::TempDir;#[test]fn strict_config_rejects_unknown_config_fields_for_standalone_app_server() -> Result<()> {    let codex_home = TempDir::new()?;    std::fs::write(        codex_home.path().join("config.toml"),        r#"foo = "bar""#,    )?;    let output = Command::new(codex_utils_cargo_bin::cargo_bin("codex-app-server")?)        .env("CODEX_HOME", codex_home.path())        .env(            "CODEX_APP_SERVER_MANAGED_CONFIG_PATH",            codex_home.path().join("managed_config.toml"),        )        .args(["--strict-config", "--listen", "off"])        .output()?;    assert!(!output.status.success());    let stderr = String::from_utf8(output.stderr)?;    assert!(        stderr.contains("unknown configuration field `foo`"),        "expected strict config error in stderr, got: {stderr}"    );    Ok(())}