nestjs-code-review

# NestJS Code Review ## Overview Provides structured code review for NestJS applications. Findings categorized by severity (Critical, Warning, Suggestion) with actionable recommendations. Delegates to `nestjs-code-review-expert` agent for deep analysis. ## When to Use - "review NestJS code", "NestJS code review", "check my NestJS controller/service" - Before merging pull requests or after implementing new features - Validating NestJS decorators, DI patterns, guard implementations - Architecture validation for NestJS modules and providers - Reviewing DTOs, pipes, interceptors, and database integration (TypeORM, Prisma, Drizzle) ## Instructions 1. **Identify Scope**: Determine which NestJS files and modules are under review. Use `glob` and `grep` to discover controllers, services, modules, guards, interceptors, and pipes in the target area. 2. **Analyze Module Structure**: Verify proper module organization — each feature should have its own module with clearly defined imports, controllers, providers, and exports. Check for circular dependencies and proper module boundaries. 3. **Review Dependency Injection**: Validate that all injectable services use constructor injection. Check provider scoping (singleton, request, transient) matches the intended lifecycle. Ensure no direct instantiation bypasses the DI container. 4. **Evaluate Controllers**: Review HTTP method usage, route naming, status codes, request/response DTOs, validation pipes, and OpenAPI decorators. Confirm ...