StoreKit — Foundations Skill

Purpose

Route StoreKit 2 in-app purchase implementation tasks to the minimum required StoreKit Knowledge Contracts. v1 scope is the modern StoreKit 2 async/await API surface only — no legacy StoreKit 1, no server-side receipt validation or App Store Server API, no StoreKit Configuration file test setup in Xcode.

Routing

Load only the contracts relevant to the task. All paths relative to knowledge/storekit/.

• Loading products with Product.products(for:), initiating a purchase with product.purchase(), or handling Product.PurchaseResult (.success/.userCancelled/.pending) -> product-loading-and-purchase.md
• Checking a VerificationResult for .verified/.unverified, reading Transaction.currentEntitlements, or calling transaction.finish() -> transaction-verification-and-entitlements.md
• The Transaction.updates listener task or calling AppStore.sync() to restore purchases -> transaction-updates-and-restoring-purchases.md
• Reading Product.SubscriptionInfo.Status/RenewalInfo/renewalState, or same-subscription-group upgrade/downgrade behavior -> subscription-status-and-renewal-info.md