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/metallb/modules/metallb/main.tf

@@ -0,0 +1,70 @@
+variable "tier" { type = string }
+
+resource "kubernetes_namespace" "metallb" {
+  metadata {
+    name = "metallb-system"
+    labels = {
+      app                = "metallb"
+      "keel.sh/enrolled" = "true"
+    }
+  }
+  lifecycle {
+    # KYVERNO_LIFECYCLE_V1: goldilocks-vpa-auto-mode ClusterPolicy stamps this label on every namespace
+    ignore_changes = [metadata[0].labels["goldilocks.fairwinds.com/vpa-update-mode"]]
+  }
+}
+
+resource "helm_release" "metallb" {
+  name       = "metallb"
+  repository = "https://metallb.github.io/metallb"
+  chart      = "metallb"
+  version    = "0.15.3"
+  namespace  = kubernetes_namespace.metallb.metadata[0].name
+  timeout    = 600
+
+  values = [yamlencode({
+    controller = {
+      image = {
+        pullPolicy = "IfNotPresent"
+      }
+    }
+    speaker = {
+      image = {
+        pullPolicy = "IfNotPresent"
+      }
+      frr = {
+        enabled = false
+      }
+    }
+  })]
+}
+
+resource "kubernetes_manifest" "ip_address_pool" {
+  manifest = {
+    apiVersion = "metallb.io/v1beta1"
+    kind       = "IPAddressPool"
+    metadata = {
+      name      = "default"
+      namespace = "metallb-system"
+    }
+    spec = {
+      addresses = ["10.0.20.200-10.0.20.220"]
+    }
+  }
+  depends_on = [helm_release.metallb]
+}
+
+resource "kubernetes_manifest" "l2_advertisement" {
+  manifest = {
+    apiVersion = "metallb.io/v1beta1"
+    kind       = "L2Advertisement"
+    metadata = {
+      name      = "default"
+      namespace = "metallb-system"
+    }
+    spec = {
+      ipAddressPools = ["default"]
+    }
+  }
+  depends_on = [helm_release.metallb]
+}