class HealthRegistry:
    def __init__(self):
        self.state = {}

    def update(self, agency, healthy=True):
        self.state[agency] = healthy

    def is_enabled(self, agency):
        return self.state.get(agency, True)

    def badge(self, agency):
        return "🟢 Healthy" if self.is_enabled(agency) else "🔴 Disabled"