Add Portworx CSI driver for Pure Storage FlashArray

- Deploy Portworx Operator + CSI driver via ArgoCD
- Support both iSCSI block and NFS file storage from FlashArray
- Integrate with 1Password External Secrets for FlashArray credentials
- Include comprehensive deployment documentation and validation script
- Storage classes: pure-block (iSCSI) and pure-file (NFS)
- Talos Linux compatible with iSCSI/multipath configuration

cluster/platform/portworx-csi/operator-values.yaml

@@ -0,0 +1,37 @@
+# ------------------------------------------------------------------------------
+# Portworx Operator Helm Values for Talos Linux
+# Chart: px-operator from Portworx
+# Version: 25.0.0
+# ------------------------------------------------------------------------------
+
+# Deploy operator to portworx namespace
+namespace: portworx
+
+# Operator configuration
+operator:
+  # Single replica is sufficient for homelab
+  replicas: 1
+
+  # Tolerations to allow operator on control plane nodes if needed
+  tolerations:
+    - key: node-role.kubernetes.io/control-plane
+      operator: Exists
+      effect: NoSchedule
+
+  # Resource requests/limits
+  resources:
+    requests:
+      cpu: 50m
+      memory: 128Mi
+    limits:
+      cpu: 200m
+      memory: 256Mi
+
+# RBAC configuration
+rbac:
+  create: true
+
+# ServiceAccount
+serviceAccount:
+  create: true
+  name: portworx-operator