GET ONLY the 'Purchase' field of TitlePublicConfigurationModel. Real-money in-app purchases (IAP) for Google Play and the Apple App Store. Product catalogue with per-store SKUs (StoreProductIDs), what each purchase grants (Rewards), subscription products that activate a Premium entitlement, audience gates and purchase limits, plus per-store receipt-verification settings. Distinct from Store (in-game shop paid with virtual currency) and from Premium (which describes the entitlement itself, while this describes how it is sold in the stores). Contains NO secrets: the Google service-account JSON and the App Store Server API key are referenced by TitleSecrets entry name only; the Play licensing public key and Apple root certificates are public by nature and live here.