Merge pull request 'docs: README for component/default/sonar-test-nest4' (#11) from documentor-agent-component-default-sonar-test-nest4-doc-11b79abf7f12 into main

catalog/component/default/sonar-test-nest4/README.md

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+---
+title: "Sonar Test Nest4"
+generated_by: documentor-agent
+generated_at: "2026-05-14T12:03:00+00:00"
+human_edited: false
+source_entity: "Component/default/sonar-test-nest4"
+source_repo: "https://gitea.kyndemo.live/validate/sonar-test-nest4"
+---
+
+# Sonar Test Nest4
+
+> A stateless microservice built with TypeScript and NestJS, providing API endpoints for item management and Prometheus-based observability.
+
+## Overview
+
+Sonar Test Nest4 is a stateless microservice scaffolded from the **Create Microservice** golden-path template on the Kyndryl Platform. It is designed to manage items through a RESTful API and includes built-in observability features such as health checks and Prometheus metrics.
+
+The service is implemented using the `typescript-nestjs` runtime and follows a structured branch model (`dev`, `staging`, `prod`, and `main`) to ensure smooth CI/CD workflows. It is deployed to Azure Kubernetes Service (AKS) via Humanitec, with container images stored in Azure Container Registry (ACR).
+
+This service plays a key role in the broader system by providing item management capabilities and adhering to platform standards for observability, deployment, and runtime configuration.
+
+## Repository
+
+| Field | Value |
+|---|---|
+| Source Repo | [Sonar Test Nest4 Repository](https://gitea.kyndemo.live/validate/sonar-test-nest4) |
+| Branch | dev |
+| ArgoCD App | — |
+| Namespace | dev |
+
+## Architecture
+
+Sonar Test Nest4 is built using the `typescript-nestjs` runtime and deployed as a stateless service. Key architectural components include:
+
+- **Runtime**: TypeScript with NestJS framework.
+- **Container Port**: `3000`.
+- **Health Check Endpoint**: `/health`.
+- **Metrics Endpoint**: `/metrics` (Prometheus format).
+- **Image Repository**: Azure Container Registry (`bstagecjotdevacr`).
+
+The CI/CD pipeline is managed through Gitea Actions workflows:
+- `build-push.yml`: Builds and tests the application, then pushes the container image to ACR.
+- `deploy-humanitec.yml`: Deploys the service to AKS via Humanitec using Score files.
+
+Promotions between environments (`dev`, `staging`, `prod`) are triggered through Backstage's CI/CD tab, ensuring controlled and gated deployments.
+
+## Configuration
+
+| Config Key | Value |
+|---|---|
+| runtime | typescript-nestjs |
+| health_path | /health |
+| container_port | 3000 |
+
+## Operations
+
+The service follows a structured branch model for development and deployment:
+
+- **dev**: Active development branch; commits trigger automatic builds and deployments to the dev environment.
+- **staging**: Pre-production environment; changes are promoted from `dev` via PR with CI gate and approval.
+- **prod**: Production environment; changes are promoted from `staging` via PR with CI gate and approval.
+- **main**: System of record; receives merges from `prod` after releases.
+
+Deployment workflows are runtime-agnostic and rely on `.platform/config.yaml` for configuration.
+
+## Observability
+
+- [Grafana Dashboard](https://grafana.kyndemo.live/d/otel-app-observability-v2/opentelemetry-application-observability?orgId=1&var-app=sonar-test-nest4): OpenTelemetry-based application observability.
+- Prometheus metrics exposed at `/metrics`.
+- Health check endpoint at `/health`.
+
+## Dependencies
+
+_No declared dependencies._