PTLam NestJS Code Style

Conventions for the NestJS boundary of a TypeScript backend: feature-first hexagonal structure, use cases, modules, dependency injection, application composition, entry points, persistence handoffs, integrations, observability, health, and Nest tests. This skill owns NestJS mechanics only.

Required skills

ptlam-code-style-typescript

Reason: Provides the TypeScript language, package, runtime-validation, async, error, logging, and Vitest mechanics underneath the NestJS boundary.