- Health Score — the single number, what it means, what moves it.
- Sink-to-Source Ratio — the most important component. Target: 1.2–1.5.
- Inflation Rate — how fast your prices are drifting.
- Alerts — when we’ll email you, and what to do about it.
currency_earned, currency_spent, and purchase events. If those are flowing cleanly, Economy Health just works.