[ci skip] Move Terraform modules into stack directories

Move all 88 service modules (66 individual + 22 platform) from
modules/kubernetes/<service>/ into their corresponding stack directories:

- Service stacks: stacks/<service>/module/
- Platform stack: stacks/platform/modules/<service>/

This collocates module source code with its Terragrunt definition.
Only shared utility modules remain in modules/kubernetes/:
ingress_factory, setup_tls_secret, dockerhub_secret, oauth-proxy.

All cross-references to shared modules updated to use correct
relative paths. Verified with terragrunt run --all -- plan:
0 adds, 0 destroys across all 68 stacks.

stacks/coturn/.terraform.lock.hcl

@@ -0,0 +1,40 @@
+# This file is maintained automatically by "terraform init".
+# Manual edits may be lost in future updates.
+
+provider "registry.terraform.io/hashicorp/helm" {
+  version = "3.1.1"
+  hashes = [
+    "h1:47CqNwkxctJtL/N/JuEj+8QMg8mRNI/NWeKO5/ydfZU=",
+    "zh:1a6d5ce931708aec29d1f3d9e360c2a0c35ba5a54d03eeaff0ce3ca597cd0275",
+    "zh:3411919ba2a5941801e677f0fea08bdd0ae22ba3c9ce3309f55554699e06524a",
+    "zh:81b36138b8f2320dc7f877b50f9e38f4bc614affe68de885d322629dd0d16a29",
+    "zh:95a2a0a497a6082ee06f95b38bd0f0d6924a65722892a856cfd914c0d117f104",
+    "zh:9d3e78c2d1bb46508b972210ad706dd8c8b106f8b206ecf096cd211c54f46990",
+    "zh:a79139abf687387a6efdbbb04289a0a8e7eaca2bd91cdc0ce68ea4f3286c2c34",
+    "zh:aaa8784be125fbd50c48d84d6e171d3fb6ef84a221dbc5165c067ce05faab4c8",
+    "zh:afecd301f469975c9d8f350cc482fe656e082b6ab0f677d1a816c3c615837cc1",
+    "zh:c54c22b18d48ff9053d899d178d9ffef7d9d19785d9bf310a07d648b7aac075b",
+    "zh:db2eefd55aea48e73384a555c72bac3f7d428e24147bedb64e1a039398e5b903",
+    "zh:ee61666a233533fd2be971091cecc01650561f1585783c381b6f6e8a390198a4",
+    "zh:f569b65999264a9416862bca5cd2a6177d94ccb0424f3a4ef424428912b9cb3c",
+  ]
+}
+
+provider "registry.terraform.io/hashicorp/kubernetes" {
+  version = "3.0.1"
+  hashes = [
+    "h1:P0c8knzZnouTNFIRij8IS7+pqd0OKaFDYX0j4GRsiqo=",
+    "zh:02d55b0b2238fd17ffa12d5464593864e80f402b90b31f6e1bd02249b9727281",
+    "zh:20b93a51bfeed82682b3c12f09bac3031f5bdb4977c47c97a042e4df4fb2f9ba",
+    "zh:6e14486ecfaee38c09ccf33d4fdaf791409f90795c1b66e026c226fad8bc03c7",
+    "zh:8d0656ff422df94575668e32c310980193fccb1c28117e5c78dd2d4050a760a6",
+    "zh:9795119b30ec0c1baa99a79abace56ac850b6e6fbce60e7f6067792f6eb4b5f4",
+    "zh:b388c87acc40f6bd9620f4e23f01f3c7b41d9b88a68d5255dec0a72f0bdec249",
+    "zh:b59abd0a980649c2f97f172392f080eaeb18e486b603f83bf95f5d93aeccc090",
+    "zh:ba6e3060fddf4a022087d8f09e38aa0001c705f21170c2ded3d1c26c12f70d97",
+    "zh:c12626d044b1d5501cf95ca78cbe507c13ad1dd9f12d4736df66eb8e5f336eb8",
+    "zh:c55203240d50f4cdeb3df1e1760630d677679f5b1a6ffd9eba23662a4ad05119",
+    "zh:ea206a5a32d6e0d6e32f1849ad703da9a28355d9c516282a8458b5cf1502b2a1",
+    "zh:f569b65999264a9416862bca5cd2a6177d94ccb0424f3a4ef424428912b9cb3c",
+  ]
+}

stacks/coturn/backend.tf

@@ -0,0 +1,6 @@
+# Generated by Terragrunt. Sig: nIlQXj57tbuaRZEa
+terraform {
+  backend "local" {
+    path = "/Users/viktorbarzin/code/infra/state/stacks/coturn/terraform.tfstate"
+  }
+}

stacks/coturn/main.tf

@@ -13,9 +13,9 @@ locals {
 }
 
 module "coturn" {
-  source = "../../modules/kubernetes/coturn"
-  tls_secret_name                = var.tls_secret_name
-  tier                           = local.tiers.edge
-  turn_secret                    = var.coturn_turn_secret
-  public_ip                      = var.public_ip
+  source          = "./module"
+  tls_secret_name = var.tls_secret_name
+  tier            = local.tiers.edge
+  turn_secret     = var.coturn_turn_secret
+  public_ip       = var.public_ip
 }

stacks/coturn/module/main.tf

@@ -0,0 +1,194 @@
+variable "tls_secret_name" {}
+variable "tier" { type = string }
+variable "turn_secret" { type = string }
+variable "public_ip" { type = string }
+
+locals {
+  turn_realm = "viktorbarzin.me"
+  turn_port  = 3478
+  # Small relay range — 100 ports is plenty for a home lab (~50 concurrent streams)
+  min_port = 49152
+  max_port = 49252
+}
+
+resource "kubernetes_namespace" "coturn" {
+  metadata {
+    name = "coturn"
+    labels = {
+      tier = var.tier
+    }
+  }
+}
+
+module "tls_secret" {
+  source          = "../../../modules/kubernetes/setup_tls_secret"
+  namespace       = kubernetes_namespace.coturn.metadata[0].name
+  tls_secret_name = var.tls_secret_name
+}
+
+resource "kubernetes_config_map" "coturn_config" {
+  metadata {
+    name      = "coturn-config"
+    namespace = kubernetes_namespace.coturn.metadata[0].name
+  }
+
+  data = {
+    "turnserver.conf" = <<-EOF
+      # TURN server configuration
+      listening-port=${local.turn_port}
+      fingerprint
+      lt-cred-mech
+      use-auth-secret
+      static-auth-secret=${var.turn_secret}
+      realm=${local.turn_realm}
+      server-name=turn.${local.turn_realm}
+
+      # Network — use 0.0.0.0, coturn auto-detects pod IP
+      listening-ip=0.0.0.0
+      external-ip=${var.public_ip}
+
+      # Media relay port range (narrow — 100 ports)
+      min-port=${local.min_port}
+      max-port=${local.max_port}
+
+      # Logging
+      verbose
+      no-stdout-log
+      syslog
+
+      # Security
+      no-multicast-peers
+      no-cli
+      no-tlsv1
+      no-tlsv1_1
+
+      # Performance
+      total-quota=100
+      stale-nonce=600
+      max-bps=0
+    EOF
+  }
+}
+
+resource "kubernetes_deployment" "coturn" {
+  metadata {
+    name      = "coturn"
+    namespace = kubernetes_namespace.coturn.metadata[0].name
+    labels = {
+      app  = "coturn"
+      tier = var.tier
+    }
+  }
+
+  spec {
+    replicas = 1
+    strategy {
+      type = "RollingUpdate"
+      rolling_update {
+        max_unavailable = 0
+        max_surge       = 1
+      }
+    }
+    selector {
+      match_labels = {
+        app = "coturn"
+      }
+    }
+
+    template {
+      metadata {
+        labels = {
+          app = "coturn"
+        }
+      }
+
+      spec {
+        container {
+          name  = "coturn"
+          image = "coturn/coturn:latest"
+          args  = ["-c", "/etc/turnserver/turnserver.conf"]
+
+          # STUN/TURN signaling port
+          port {
+            name           = "turn-udp"
+            container_port = local.turn_port
+            protocol       = "UDP"
+          }
+          port {
+            name           = "turn-tcp"
+            container_port = local.turn_port
+            protocol       = "TCP"
+          }
+
+          volume_mount {
+            name       = "config"
+            mount_path = "/etc/turnserver"
+            read_only  = true
+          }
+
+          resources {
+            requests = {
+              cpu    = "100m"
+              memory = "128Mi"
+            }
+            limits = {
+              cpu    = "1"
+              memory = "512Mi"
+            }
+          }
+        }
+
+        volume {
+          name = "config"
+          config_map {
+            name = kubernetes_config_map.coturn_config.metadata[0].name
+          }
+        }
+      }
+    }
+  }
+}
+
+# LoadBalancer service with MetalLB — exposes STUN/TURN signaling + relay ports
+resource "kubernetes_service" "coturn" {
+  metadata {
+    name      = "coturn"
+    namespace = kubernetes_namespace.coturn.metadata[0].name
+    annotations = {
+      "metallb.universe.tf/loadBalancerIPs" = "10.0.20.200"
+      "metallb.universe.tf/allow-shared-ip" = "shared"
+    }
+  }
+
+  spec {
+    type = "LoadBalancer"
+    selector = {
+      app = "coturn"
+    }
+
+    # STUN/TURN signaling
+    port {
+      name        = "turn-udp"
+      port        = local.turn_port
+      target_port = local.turn_port
+      protocol    = "UDP"
+    }
+    port {
+      name        = "turn-tcp"
+      port        = local.turn_port
+      target_port = local.turn_port
+      protocol    = "TCP"
+    }
+
+    # Relay port range (49152-49252)
+    dynamic "port" {
+      for_each = range(local.min_port, local.max_port + 1)
+      content {
+        name        = "relay-${port.value}"
+        port        = port.value
+        target_port = port.value
+        protocol    = "UDP"
+      }
+    }
+  }
+}

stacks/coturn/providers.tf

@@ -0,0 +1,15 @@
+# Generated by Terragrunt. Sig: nIlQXj57tbuaRZEa
+variable "kube_config_path" {
+  type    = string
+  default = "~/.kube/config"
+}
+
+provider "kubernetes" {
+  config_path = var.kube_config_path
+}
+
+provider "helm" {
+  kubernetes = {
+    config_path = var.kube_config_path
+  }
+}

stacks/coturn/secrets

@@ -0,0 +1 @@
+../../secrets