Expose aws_cloudwatch_retention_days through aws-platform-ui-main (#55)

Allows consumers to override the CloudWatch log retention (default 90 days)
without modifying the upstream module.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: sam-at-luther

aws-platform-ui-main/eks-vpc.tf

@@ -26,6 +26,7 @@ module "eks_vpc" {
 
   monitoring                     = var.monitoring
   logs                           = var.logs
+  aws_cloudwatch_retention_days  = var.aws_cloudwatch_retention_days
   grafana_saml_admin_role_values = var.grafana_saml_admin_role_values
   grafana_saml_role_assertion    = var.grafana_saml_role_assertion
   grafana_saml_metadata_xml      = var.grafana_saml_metadata_xml

aws-platform-ui-main/vars.tf

@@ -120,6 +120,11 @@ variable "logs" {
   default = false
 }
 
+variable "aws_cloudwatch_retention_days" {
+  type    = number
+  default = 90
+}
+
 variable "custom_instance_userdata" {
   type    = string
   default = ""