Vtex Io Graphql Api

This handles the GraphQL layer in VTEX IO apps: schema definitions in `/graphql`, resolver wiring in `/node/resolvers`, and the directives that control caching and auth. You'll use it when exposing data to your storefront React components or building aggregation layers over VTEX Commerce APIs. The key gotchas are all silent failures: forget the `graphql` builder in your manifest and your schema won't register, mismatch a resolver name and the field returns null with no error, skip `@cacheControl` on public queries and every request hammers your resolver. It's specific to the GraphQL piece, not the broader service structure or MasterData integration.