feat: modernize application — source, platform artifacts, CI/CD (#3)

docs/index.md

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+# reno-demo-16
+
+Modernized reno-demo-16 service
+
+## Overview
+
+This service is built with **Java Spring Boot** and follows the Golden Path architecture patterns.
+
+### Key Features
+
+- 🚀 Production-ready configuration
+- 📊 Prometheus metrics exposed
+- 🏥 Health check endpoints
+- 🔒 Security scanning in CI/CD
+- 📦 Containerized deployment
+
+## Quick Start
+
+```bash
+git clone https://gitea.kyndemo.live/kyndryl-demos/reno-demo-16.git
+cd reno-demo-16
+```
+
+## Monitoring
+
+- **Metrics**: Prometheus metrics at `/metrics`
+- **Health**: `/health`
+- **Grafana**: [View Dashboard](https://grafana.kyndemo.live/d/app-reno-demo-16)
+
+## Support
+
+Contact the Platform Engineering team.