feat(sso-mfa): T05 SSO stack pivot — Keycloak → Authelia + LLDAP + KeyCape (NK-WP-0001-T05)

Replaces the Keycloak+privacyIDEA SSO tier with the lightweight stack built
during KEY-WP-0001: Authelia (password frontend), LLDAP (directory), and
KeyCape (OIDC orchestration). privacyIDEA is retained as the MFA engine.

Stack:
  kc.coulomb.social   — KeyCape OIDC server (stateless, custom Go)
  auth.coulomb.social — Authelia login portal (password auth → Authelia OIDC → KeyCape)
  lldap.coulomb.social — LLDAP admin UI (IP-restricted)
  pink.coulomb.social — privacyIDEA MFA engine (unchanged)

Changes:
- Remove sso-mfa/k8s/keycloak/ (7 files)
- Add sso-mfa/k8s/lldap/ (pvc, deployment, middleware, ingress, create-secrets, README)
- Add sso-mfa/k8s/authelia/ (pvc, configmap, deployment, ingress, create-secrets, README)
- Add sso-mfa/k8s/keycape/ (deployment, middleware, ingress, create-secrets, create-pi-token, README)
- Update network-policies/netpol-sso.yaml for new component topology
- Update verify-t05.sh: checks LLDAP + Authelia + KeyCape (23 checks)
- Update CONFIG.md: fix CP-NK-004 (KeyCape), add CP-NK-005 (Authelia), CP-NK-006 (LLDAP)
- Update bootstrap/gen-secrets.sh: add LLDAP/Authelia/KeyCape sections, remove Keycloak
- Update k8s/README.md: network policy table reflects new traffic paths
- Add sso-mfa/WORKPLAN.md: resumable task checklist

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

sso-mfa/k8s/network-policies/netpol-sso.yaml

@@ -1,12 +1,24 @@
-# NetworkPolicies for the sso namespace (Keycloak)
+# NetworkPolicies for the sso namespace (KeyCape + Authelia + LLDAP)
 #
-# Allowed paths:
-#   INGRESS: Traefik (kube-system) → Keycloak :8080
-#   EGRESS:  Keycloak → databases :5432 (PostgreSQL)
-#   EGRESS:  Keycloak → mfa :8080 (privacyIDEA API)
-#   EGRESS:  all pods → kube-dns :53 (UDP+TCP)
+# Components in this namespace:
+#   keycape  — OIDC orchestration layer (port 8080)
+#   authelia — authentication frontend (port 9091)
+#   lldap    — LDAP directory (port 3890 LDAP, port 17170 Web UI)
 #
-# Everything else is denied.
+# Allowed ingress paths:
+#   Traefik → keycape  :8080   (OIDC endpoints, user-facing)
+#   Traefik → authelia :9091   (login portal, user-facing)
+#   Traefik → lldap    :17170  (admin web UI; IP-restricted at Traefik layer)
+#
+# Allowed egress paths:
+#   keycape  → authelia :9091  (OIDC callback orchestration)
+#   keycape  → lldap    :3890  (LDAP user lookups)
+#   keycape  → mfa      :8080  (privacyIDEA MFA check and token validation)
+#   authelia → lldap    :3890  (LDAP authentication backend)
+#   all pods → kube-dns :53    (DNS resolution)
+#
+# No egress to databases namespace — KeyCape is stateless;
+# LLDAP uses SQLite on a PVC (no external DB needed in lightweight mode).
 
 # ── Default deny all ingress and egress ──────────────────────────────────────
 apiVersion: networking.k8s.io/v1
@@ -20,18 +32,16 @@ spec:
     - Ingress
     - Egress
 ---
-# ── Allow ingress from Traefik (K3s ingress controller) ─────────────────────
-# Traefik terminates TLS; Keycloak listens on HTTP :8080 internally.
-# Traefik pods are in kube-system with label app.kubernetes.io/name=traefik.
+# ── Traefik → KeyCape :8080 ───────────────────────────────────────────────────
 apiVersion: networking.k8s.io/v1
 kind: NetworkPolicy
 metadata:
-  name: allow-ingress-from-traefik
+  name: allow-traefik-to-keycape
   namespace: sso
 spec:
   podSelector:
     matchLabels:
-      app.kubernetes.io/name: keycloak
+      app.kubernetes.io/name: keycape
   policyTypes:
     - Ingress
   ingress:
@@ -46,38 +56,162 @@ spec:
         - port: 8080
           protocol: TCP
 ---
-# ── Allow egress to PostgreSQL ───────────────────────────────────────────────
+# ── Traefik → Authelia :9091 ──────────────────────────────────────────────────
 apiVersion: networking.k8s.io/v1
 kind: NetworkPolicy
 metadata:
-  name: allow-egress-to-postgres
+  name: allow-traefik-to-authelia
   namespace: sso
 spec:
   podSelector:
     matchLabels:
-      app.kubernetes.io/name: keycloak
+      app.kubernetes.io/name: authelia
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: kube-system
+          podSelector:
+            matchLabels:
+              app.kubernetes.io/name: traefik
+      ports:
+        - port: 9091
+          protocol: TCP
+---
+# ── Traefik → LLDAP :17170 (admin web UI) ────────────────────────────────────
+# IP-based restriction is enforced at the Traefik layer (lldap-admin-allowlist
+# middleware in lldap/middleware.yaml). This NetworkPolicy opens the port;
+# Traefik enforces the IP allowlist before traffic reaches LLDAP.
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-traefik-to-lldap-ui
+  namespace: sso
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: lldap
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: kube-system
+          podSelector:
+            matchLabels:
+              app.kubernetes.io/name: traefik
+      ports:
+        - port: 17170
+          protocol: TCP
+---
+# ── KeyCape → Authelia :9091 ──────────────────────────────────────────────────
+# KeyCape redirects the browser to Authelia and exchanges auth codes at /token.
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-keycape-to-authelia
+  namespace: sso
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: authelia
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              app.kubernetes.io/name: keycape
+      ports:
+        - port: 9091
+          protocol: TCP
+---
+# ── KeyCape → LLDAP :3890 ────────────────────────────────────────────────────
+# KeyCape queries LLDAP for user attributes after authentication.
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-keycape-to-lldap
+  namespace: sso
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: lldap
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              app.kubernetes.io/name: keycape
+      ports:
+        - port: 3890
+          protocol: TCP
+---
+# ── Authelia → LLDAP :3890 ───────────────────────────────────────────────────
+# Authelia binds to LLDAP to validate credentials and resolve group membership.
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-authelia-to-lldap
+  namespace: sso
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: lldap
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              app.kubernetes.io/name: authelia
+      ports:
+        - port: 3890
+          protocol: TCP
+---
+# ── KeyCape egress → Authelia + LLDAP (within sso namespace) ─────────────────
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-keycape-egress-internal
+  namespace: sso
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: keycape
   policyTypes:
     - Egress
   egress:
     - to:
-        - namespaceSelector:
+        - podSelector:
             matchLabels:
-              net-kingdom/component: databases
+              app.kubernetes.io/name: authelia
       ports:
-        - port: 5432
+        - port: 9091
+          protocol: TCP
+    - to:
+        - podSelector:
+            matchLabels:
+              app.kubernetes.io/name: lldap
+      ports:
+        - port: 3890
           protocol: TCP
 ---
-# ── Allow egress to privacyIDEA ──────────────────────────────────────────────
-# Keycloak calls the privacyIDEA REST API via the privacyIDEA Keycloak Provider.
+# ── KeyCape egress → privacyIDEA (mfa namespace) :8080 ───────────────────────
+# KeyCape calls privacyIDEA to check and validate MFA tokens.
 apiVersion: networking.k8s.io/v1
 kind: NetworkPolicy
 metadata:
-  name: allow-egress-to-privacyidea
+  name: allow-keycape-egress-to-privacyidea
   namespace: sso
 spec:
   podSelector:
     matchLabels:
-      app.kubernetes.io/name: keycloak
+      app.kubernetes.io/name: keycape
   policyTypes:
     - Egress
   egress:
@@ -89,6 +223,27 @@ spec:
         - port: 8080
           protocol: TCP
 ---
+# ── Authelia egress → LLDAP (within sso namespace) ───────────────────────────
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-authelia-egress-to-lldap
+  namespace: sso
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: authelia
+  policyTypes:
+    - Egress
+  egress:
+    - to:
+        - podSelector:
+            matchLabels:
+              app.kubernetes.io/name: lldap
+      ports:
+        - port: 3890
+          protocol: TCP
+---
 # ── Allow egress DNS (all pods) ──────────────────────────────────────────────
 apiVersion: networking.k8s.io/v1
 kind: NetworkPolicy