sdlc-nest-advanced

GraphQL, WebSockets, and microservices patterns for NestJS. Apply only when the relevant package is in dependencies (@nestjs/graphql, @nestjs/websockets, @nestjs/microservices). Each section is orientation, not exhaustive — defer to NestJS docs for deep dives. Use this skill to: - Wire a GraphQL resolver (code-first) with class-validator inputs. - Build a WebSocket gateway with auth and room management. - Set up a microservice transport (TCP/RabbitMQ/NATS/Redis/Kafka) and message handlers. Do NOT use this skill for: - REST controllers (see nest-conventions + decorator-patterns). - ORM (see nest-data-layer). - Auth strategies (see security-analyst phase guidance).