Add comprehensive Kubernetes deployment module

- Create 04-kubernetes.adoc with complete Kubernetes deployment guide
- Cover basic pods, deployments, scaling, and production patterns
- Include GPU resource management and NVIDIA GPU Operator integration
- Add persistent storage, ConfigMaps, and secrets management
- Implement horizontal pod autoscaling with custom policies
- Configure ingress, load balancing, and TLS termination
- Add Prometheus monitoring and ServiceMonitor configuration
- Include multi-GPU deployments and StatefulSet patterns
- Provide comprehensive troubleshooting and performance tuning
- Update navigation and index page to include Kubernetes section

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: blues-man

documentation/modules/ROOT/nav.adoc

@@ -16,4 +16,13 @@
 ** xref:03-advanced.adoc#optimization[Performance Optimization]
 ** xref:03-advanced.adoc#streaming[Streaming Responses]
 ** xref:03-advanced.adoc#custom[Custom Models & LoRA]
-** xref:03-advanced.adoc#scaling[Scaling & Load Balancing]
+** xref:03-advanced.adoc#scaling[Scaling & Load Balancing]
+
+* xref:04-kubernetes.adoc[4. vLLM on Kubernetes]
+** xref:04-kubernetes.adoc#basic-deployment[Basic Deployment]
+** xref:04-kubernetes.adoc#deployment-with-scaling[Deployment with Scaling]
+** xref:04-kubernetes.adoc#persistent-storage[Persistent Storage]
+** xref:04-kubernetes.adoc#autoscaling[Horizontal Pod Autoscaling]
+** xref:04-kubernetes.adoc#ingress[Ingress Configuration]
+** xref:04-kubernetes.adoc#monitoring[Monitoring & Observability]
+** xref:04-kubernetes.adoc#advanced-patterns[Advanced Deployment Patterns]