Tutorial — build a feature end to end

Note

This tutorial is being written. It will walk a single feature (users) through every layer: entity, service, controller, resolver, gateway, authorization, and tests. Until it lands, the crates/features/src/users/ reference feature is the canonical exemplar to copy from.

Sections (coming soon)

1. Scaffold the feature folder — port (core/) and the first adapter.
2. Entity and service — define the data shape and the business logic.
3. Expose over HTTP — controller, pipes, guards.
4. Expose over GraphQL — resolver, fields, dataloaders.
5. Expose over WebSockets — gateway and messages.
6. Authorization — abilities, row-level filtering, response masking.
7. Persistence and migrations — entity wiring, the migrator app.
8. Test it end to end — nestrs-testing and the live baseline.