Nestjs Best Practices

This one gives Claude a solid foundation in NestJS conventions: modular architecture, dependency injection scoping, exception filters, DTO validation with class-validator, and Drizzle ORM integration. You get enforcement rules for keeping modules focused, choosing the right provider scope (singleton vs request vs transient), and structuring the request pipeline correctly. The references break down common anti-patterns like dumping everything in AppModule or skipping validation. Most useful when you're setting up a new NestJS project or reviewing code that's grown messy. The Drizzle patterns are a nice touch since that's less commonly documented than TypeORM approaches.