`getStorefrontRegionCode` rejects when `Storefront.current` is nil
(unsigned simulator, signed-out device, StoreKit not yet ready,
parental controls, etc.). The call sits in NativeAppService startup
before `prepareBooksDir`, so an unhandled rejection here aborts the
rest of init and surfaces as a top-level unhandledRejection in the
webview console.
Wrap the call in try/catch and treat failure as 'unknown region',
leaving `storefrontRegionCode` null so downstream region-gated
features degrade gracefully. Also guard against an empty resolve
shape with optional chaining on `res?.regionCode`.
loveheaven
7324b2b2bf