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• Broker transports. Precept.Grpc covers gRPC; Kafka, RabbitMQ and Azure Service Bus would land as a Precept.Messaging package over the same Precept.Containers foundation.
• Assertions over gRPC and the database. Assertions cover values, the page and HTTP responses. Precept.Grpc and Precept.Data still carry the older helpers that throw on their own — Rpc.ShouldFailAsync, Status.ShouldHaveDetailContaining, Db.ShouldReturnRowCountAsync — and are the next two modules to move onto Subject<T>.