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/lldap/middleware.yaml

@@ -0,0 +1,25 @@
+# Traefik Middleware for LLDAP web UI (namespace: sso)
+#
+# The LLDAP web UI is admin-only and must never be accessible from the internet.
+# This middleware restricts access to VPN/office IPs.
+#
+# Middleware name referenced in ingress.yaml:
+#   sso-lldap-admin-allowlist@kubernetescrd
+#
+# ADJUST sourceRange to your actual VPN / office CIDR(s) before going live.
+
+apiVersion: traefik.io/v1alpha1
+kind: Middleware
+metadata:
+  name: lldap-admin-allowlist
+  namespace: sso
+  labels:
+    app.kubernetes.io/part-of: net-kingdom-sso-mfa
+    net-kingdom/component: sso
+spec:
+  ipAllowList:
+    # EDIT: replace with your VPN/office CIDRs.
+    sourceRange:
+      - "10.0.0.0/8"
+      - "172.16.0.0/12"
+      - "192.168.0.0/16"