Function failIfMissing

src/utils/prompt.ts:66–74

(flagName: string, context: string)

 * in non-interactive (agent / CI) mode.
 */
export function failIfMissing(flagName: string, context: string): never {
  throw new CLIError(
    `Missing required argument: --${flagName}\n` +
    `Hint: In non-interactive (CI / agent) environments all required flags must be provided.\n` +
    `      In an interactive terminal, run without --${flagName} and the CLI will prompt for it.`,
    ExitCode.USAGE,
    context,
  );
}

export async function promptOrFail(opts: {
  value: string | undefined;