docs: fix stale references in chart documentation

- Remove hardcoded local paths from INSTALL.md and QUICK-START.md
- Update minimum K8s version from 1.20+ to 1.28+ (matches CI test matrix)
- Replace deprecated PSP reference with Pod Security Standards

Author: privsim

helm/disentangle/INSTALL.md

@@ -4,7 +4,7 @@ Quick start guide for deploying the Disentangle Protocol network using Helm.
 
 ## Prerequisites
 
-- Kubernetes cluster (1.20+)
+- Kubernetes cluster (1.28+)
 - Helm 3.x
 - kubectl configured to access your cluster
 - At least 5Gi of persistent storage available (1Gi per node with default 5 nodes)
@@ -13,7 +13,7 @@ Quick start guide for deploying the Disentangle Protocol network using Helm.
 
 ```bash
 # Navigate to the Helm chart directory
-cd /Users/lclose/DISENTANGLE-NETWORK/deploy/helm
+cd helm
 
 # Install with default settings (5 nodes)
 helm install disentangle ./disentangle

helm/disentangle/QUICK-START.md

@@ -3,7 +3,7 @@
 ## One-Line Install
 
 ```bash
-cd /Users/lclose/DISENTANGLE-NETWORK/deploy/helm && helm install disentangle ./disentangle
+helm install disentangle helm/disentangle
 ```
 
 ## Essential Commands

helm/disentangle/README.md

@@ -10,7 +10,7 @@ Helm chart for deploying a Disentangle Protocol network on Kubernetes.
 - RPC service with optional ingress
 - Optional transaction generator CronJob for testing
 - Configurable consensus and PoW parameters
-- Security hardening with PSP and non-root containers
+- Security hardening with Pod Security Standards and non-root containers
 
 ## Installation