# Ninaku Core

> The backend, documented as it actually runs

A modular monolith on NestJS and PostgreSQL. Every contract here is enforced by CI, and the API reference is generated from the running service — not written by hand.

## Table of Contents

### Architecture

- [Ninaku Application Architecture](/reference/ARCHITECTURE.md)
- [Mapa de schemas: baseline y objetivo](/reference/DOMAIN_MAP.md)
- [Decisiones para el refinamiento](/reference/DECISIONS.md)

### Product

- [Diseño de negocio: inventario, colaboración y offline](/reference/BUSINESS_DESIGN.md)
- [Ninaku Backend Roadmap](/reference/ROADMAP.md)
- [Una aplicación, varios negocios y verticales](/reference/APP_SHELL_AND_ONBOARDING.md)
- [Ninaku Core: multimoneda y multiidioma](/reference/CURRENCY_AND_LANGUAGE.md)

### Platform

- [Ninaku NestJS Stack Guide](/reference/NESTJS_STACK_GUIDE.md)
- [Auditoría de Identidad, Organización y Acceso — revisión 9](/reference/IDENTITY_ACCESS_AUDIT.md)
- [Availability and Performance Strategy](/reference/AVAILABILITY_AND_PERFORMANCE.md)

### Foundation

- [Foundation: contrato HTTP y observabilidad](/contracts/FOUNDATION_HTTP_AND_OBSERVABILITY.md)
- [Escenarios de validación](/contracts/VALIDATION.md)

### API and modules

- [Ninaku Module Contracts](/contracts/MODULE_CONTRACTS.md)
- [Ninaku Core: módulos, API y operaciones confiables](/contracts/API_AND_MODULE_CONTRACTS.md)
- [API and Schema Design Discipline](/contracts/API_AND_SCHEMA_DISCIPLINE.md)

### Other

- [API Reference](/api-reference.md)
- [Documentación de Ninaku App API](/README.md)