Service Runtime & Execution Model When this skill applies Use this skill when the main decision is how a VTEX IO backend app runs inside the builder: how the entrypoint is structured, how runtime configuration is declared, and how routes, events, or GraphQL handlers are registered into the service. - Creating a new backend app under - Structuring as the service entrypoint - Defining typed , , and params contracts for handlers - Configuring for timeout, memory, workers, and replicas - Troubleshooting runtime issues caused by service registration or execution model mismatches - Registering Grap…