fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip]

6d224861 came from a --no-checkout worktree whose empty index made the
commit drop every file except two. This restores 05b50d2b's full tree and
correctly adds stacks/stem95su/gdrive-sync.tf + the service-catalog stem95su
entry. Forward-only (parent=6d224861, no force-push); [ci skip] since the
live infra was never applied from the broken commit.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

stacks/k8s-portal/main.tf

@@ -0,0 +1,12 @@
+variable "tls_secret_name" { type = string }
+variable "k8s_ca_cert" {
+  type    = string
+  default = ""
+}
+
+module "k8s-portal" {
+  source          = "./modules/k8s-portal"
+  tier            = local.tiers.edge
+  tls_secret_name = var.tls_secret_name
+  k8s_ca_cert     = var.k8s_ca_cert
+}