Add Chapter 6: Persistent Storage - Volumes, PVCs, and StatefulSets

Author: 0xReLogic

README.md

@@ -74,7 +74,7 @@ These are components you'll use 90% of the time working with Kubernetes.
 - **[Chapter 3: Deployments - The Copy Machine](./chapters/03-deployments/)** - Scaling, rolling updates, and self-healing that's not magic
 - **[Chapter 4: Services - The Traffic Director](./chapters/04-services/)** - How pods communicate when their IP addresses keep changing
 - **[Chapter 5: ConfigMaps & Secrets - Configuration Done Right](./chapters/05-config/)** - Externalize configuration the professional way
-- **Chapter 6: Storage that Survives** - Coming soon
+- **[Chapter 6: Persistent Storage - Data That Survives](./chapters/06-storage/)** - Volumes, PVCs, and storage that outlives pods
 - **Chapter 7: Ingress - The Front Door** - Coming soon
 - **Chapter 8: Debugging & Troubleshooting** - Coming soon
 - **Chapter 9: Best Practices** - Coming soon