Update README.md to provide a comprehensive overview of The Order monorepo, including repository structure, quickstart guide, development workflow, and contribution guidelines.

infra/README.md

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+# Infrastructure
+
+Infrastructure as code for The Order.
+
+## Directory Structure
+
+- `terraform/` - Terraform configurations
+- `k8s/` - Kubernetes manifests and Helm charts
+- `gateways/` - API gateway and proxy configurations
+- `cicd/` - CI/CD templates and scripts
+
+## Getting Started
+
+1. **Terraform**: Set up cloud infrastructure
+   ```bash
+   cd terraform
+   terraform init
+   terraform plan
+   terraform apply
+   ```
+
+2. **Kubernetes**: Deploy applications
+   ```bash
+   cd k8s
+   kubectl apply -k overlays/dev
+   ```
+
+3. **Gateway**: Configure API gateway
+   ```bash
+   cd gateways
+   # Apply gateway configuration
+   ```
+
+## Environments
+
+- **Development**: Local development environment
+- **Staging**: Pre-production environment
+- **Production**: Live production environment
+
+## Security
+
+- Secrets management via SOPS and KMS
+- Network policies and security groups
+- WAF rules for API protection
+- TLS/SSL certificates
+- Regular security audits
+
+## Monitoring
+
+- Prometheus for metrics
+- Grafana for dashboards
+- OpenTelemetry for tracing
+- ELK/OpenSearch for logging
+
+## Documentation
+
+See individual README files in each subdirectory for more details.
+