NestJS boilerplate supporting both relational (TypeORM/PostgreSQL) and document (Mongoose/MongoDB) persistence.
Use the generate skill (auto-loaded from .claude/skills/generate/SKILL.md). It documents the project's CLI generators (npm run generate:resource:*, npm run add:property:to-*) which keep both database variants, DTOs, modules, and migrations in sync. Do not hand-write entity files.