fix: align terraform config with deployed infrastructure

Author: ThomasK33

terraform/eks.tf

@@ -3,6 +3,8 @@ resource "aws_eks_cluster" "this" {
   role_arn = aws_iam_role.eks_cluster.arn
   version  = var.cluster_version
 
+  bootstrap_self_managed_addons = false
+
   vpc_config {
     subnet_ids              = aws_subnet.private[*].id
     endpoint_public_access  = true

terraform/vpc.tf

@@ -14,11 +14,9 @@ locals {
 
   azs = slice(data.aws_availability_zones.available.names, 0, local.az_count)
 
-  # Derive subnet ranges from the configurable VPC CIDR.
-  subnet_cidrs = cidrsubnets(var.vpc_cidr, 4, 4, 4, 4)
-
-  public_subnet_cidrs  = slice(local.subnet_cidrs, 0, local.az_count)
-  private_subnet_cidrs = slice(local.subnet_cidrs, local.az_count, local.az_count * 2)
+  # Match the deployed subnet layout (explicit /24 blocks within the VPC CIDR).
+  public_subnet_cidrs  = ["10.0.1.0/24", "10.0.2.0/24"]
+  private_subnet_cidrs = ["10.0.10.0/24", "10.0.20.0/24"]
 }
 
 resource "aws_vpc" "this" {