Data & observability

Unified event bus (Kafka/Pulsar). OperationalDB for app events; LedgerDB for financial events.

Anti‑cheat joins device/behavior/geo/merchant features with rules + light models; every blacklist/penalty is explainable.

Public dashboards (roadmap):

MAPU, cards issued/activation, txs/user & AOV, chargeback rate, merchants active/GMV, quest completion/repurchase, Net Demand with anti‑cheat notes.