class Mitochondria:
    """
    Endosymbiosis: A deterministic runtime (Python REPL).
    """
    def digest_glucose(self, expression: str) -> str:
        try:
            # WARNING: eval() is unsafe for production without sandboxing.
            # Use specific math libraries or Docker containers in real usage.
            print(f"⚡ [Mitochondria] Metabolizing: {expression}")
            return str(eval(expression))
        except Exception as e:
            return f"Metabolic Failure: {e}"
