class StrategyAgent:
    def generate(self, niche: str, business_type: str) -> str:
        """
        Produce a viral product idea and monetization strategies.
        In production, call Gemini/GPT-4 here.
        """
        return (
            f"LangGraph StrategyAgent: Viral idea for {business_type} in {niche} niche, "
            "plus 3 monetization strategies."
        )