feat: OCI deployment — Terraform VM + OKE stacks, OCIR, K8s manifests

- terraform-vm/: ARM VM (A1.Flex Free Tier), Docker Compose, Block Volume, LB+WAF+SSL
- terraform-oke/: OKE cluster (3 nodes Intel), NodePort, LB+WAF+SSL
- k8s/: namespace, deployments, services, PVC, secrets, configmap
- Dockerfile.frontend: self-contained nginx+dist image
- push-images.sh: multi-arch build (amd64+arm64) + push to OCIR
- dns.tf: conditional OCI DNS Zone + A record (when domain available)
- Both stacks 100% independent, no shared modules
- .gitignore: terraform state, .terraform/, *.tfvars

deploy/terraform-oke/provider.tf

@@ -0,0 +1,27 @@
+# -----------------------------------------------------------------------------
+# OCI CIS Agent — OKE Deployment Stack
+# Provider Configuration
+# -----------------------------------------------------------------------------
+
+terraform {
+  required_version = ">= 1.5.0"
+
+  required_providers {
+    oci = {
+      source  = "oracle/oci"
+      version = ">= 6.0.0"
+    }
+    tls = {
+      source  = "hashicorp/tls"
+      version = ">= 4.0.0"
+    }
+  }
+}
+
+provider "oci" {
+  tenancy_ocid     = var.tenancy_ocid
+  user_ocid        = var.user_ocid
+  fingerprint      = var.fingerprint
+  private_key_path = var.private_key_path
+  region           = var.region
+}