feat: initial monitoring stack structure

README.md

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+# Monitoring Stack
+
+![Prometheus](https://img.shields.io/badge/Prometheus-2.47+-E6522C?style=flat&logo=prometheus&logoColor=white)
+![Grafana](https://img.shields.io/badge/Grafana-10+-F46800?style=flat&logo=grafana&logoColor=white)
+![License](https://img.shields.io/badge/License-MIT-blue)
+
+Production-ready monitoring stack configurations for Prometheus, Grafana, Loki, and Alertmanager.
+
+## Components
+
+```
+├── prometheus/
+│   ├── rules/           # Alert rules
+│   └── targets/         # Scrape targets
+├── grafana/
+│   ├── dashboards/      # JSON dashboards
+│   └── datasources/     # Data source configs
+├── alertmanager/        # Alert routing
+├── loki/                # Log aggregation
+└── promtail/            # Log shipping
+```
+
+## Dashboards
+
+- 📊 Node Exporter - System metrics
+- 🐳 Docker/Kubernetes - Container metrics
+- 🌐 NGINX/Traefik - Ingress metrics
+- 💾 PostgreSQL/Redis - Database metrics
+- ⚡ Custom app dashboards
+
+## Alert Rules
+
+- 🔴 HighCPU, HighMemory, DiskFull
+- 🟡 ServiceDown, HighLatency
+- 🔵 CertExpiring, BackupFailed
+
+## Quick Start
+
+```bash
+docker-compose up -d
+# Grafana: http://localhost:3000 (admin/admin)
+# Prometheus: http://localhost:9090
+```
+
+## License
+
+MIT