watchstate: expose externally at watchstate.unkin.net

Add a public front door for the WatchState admin UI on watchstate.unkin.net
via the external (DMZ) Traefik, alongside the existing internal
watchstate.k8s.syd1.au.unkin.net gateway. oauth2-proxy fronts both hostnames.

- DNSRecord watchstate-dns-internal (bind-internal/authoritative, unkin.net
  zone) -> A 198.18.199.0, the traefik-external VIP (arrstack precedent).
- watchstate-external Gateway (traefik-external) + HTTPRoutes: http->https
  redirect and https -> watchstate-oauth2:80. TLS terminated with the
  Let's Encrypt *.unkin.net wildcard (wildcard-unkin-net-tls), so no
  cert-manager/external-dns annotations.
- oauth2-proxy: relative redirect-url (/oauth2/callback) so reverse-proxy mode
  derives scheme+host per request, making the callback work on BOTH hosts;
  cookie + whitelist domains cover both hostnames.
- Drop the no-op sync-wave: "0" annotation on the vaultauth default VaultAuth.

Dependencies:
- wildcard-unkin-net-tls reflection into the watchstate namespace (reflector
  allow-list, argocd-apps PR #418).
- Both callback URIs registered on the Authentik watchstate provider
  (terraform-authentik, separate PR).

apps/base/arrstack/arrproxy/gateway.yaml

@@ -1,9 +1,11 @@
 ---
 # External (DMZ) front for the arrstack, served on arrstack.unkin.net via the
-# external Traefik (LB VIP 198.18.199.0). cert-manager mints arrproxy-gateway-tls
-# (CN arrstack.unkin.net) off the internal Vault-PKI CA. The apex arrstack.unkin.net
-# A record lives in the bind-operator unkin.net zone (bind-internal/authoritative),
-# NOT external-dns, so no external-dns annotation here.
+# external Traefik (LB VIP 198.18.199.0). The apex arrstack.unkin.net A record
+# lives in the bind-operator unkin.net zone (bind-internal/authoritative), NOT
+# external-dns, so no external-dns annotation here. Public TLS is terminated with
+# the real Let's Encrypt *.unkin.net wildcard, centrally minted once in the
+# cert-manager namespace (Certificate wildcard-unkin-net) and reflected into this
+# namespace by the emberstack reflector as wildcard-unkin-net-tls, not Vault PKI.
 apiVersion: gateway.networking.k8s.io/v1
 kind: Gateway
 metadata:
@@ -11,9 +13,6 @@ metadata:
     traefik.io/instance: external
   annotations:
     argocd.argoproj.io/sync-wave: "2"
-    cert-manager.io/cluster-issuer: vault-issuer
-    cert-manager.io/common-name: arrstack.unkin.net
-    cert-manager.io/private-key-size: "4096"
   name: arrproxy
   namespace: arrstack
 spec:
@@ -38,4 +37,4 @@ spec:
         certificateRefs:
           - group: ""
             kind: Secret
-            name: arrproxy-gateway-tls
+            name: wildcard-unkin-net-tls

apps/base/authentik/gateway.yaml

@@ -1,19 +1,22 @@
 ---
+# External (DMZ) front for public identity.unkin.net, served via the external
+# Traefik (LB VIP 198.18.199.0). The apex identity.unkin.net A record lives in
+# the bind-operator unkin.net zone (bind-internal/authoritative), NOT
+# external-dns, so no external-dns annotation here. Public TLS is terminated with
+# the real Let's Encrypt *.unkin.net wildcard, centrally minted once in the
+# cert-manager namespace (Certificate wildcard-unkin-net) and reflected into this
+# namespace by the emberstack reflector as wildcard-unkin-net-tls, not Vault PKI.
 apiVersion: gateway.networking.k8s.io/v1
 kind: Gateway
 metadata:
   labels:
-    traefik.io/instance: internal
+    traefik.io/instance: external
   annotations:
-    cert-manager.io/cluster-issuer: vault-issuer
-    cert-manager.io/common-name: identity.unkin.net
-    cert-manager.io/private-key-size: "4096"
-    external-dns.alpha.kubernetes.io/hostname: identity.unkin.net,identity.k8s.syd1.au.unkin.net
-    external-dns.alpha.kubernetes.io/target: 198.18.200.4
+    argocd.argoproj.io/sync-wave: "2"
   name: authentik
   namespace: authentik
 spec:
-  gatewayClassName: traefik-internal
+  gatewayClassName: traefik-external
   listeners:
     - allowedRoutes:
         namespaces:
@@ -33,20 +36,40 @@ spec:
         certificateRefs:
           - group: ""
             kind: Secret
-            name: authentik-tls
+            name: wildcard-unkin-net-tls
         mode: Terminate
+---
+# Cluster hostname variant, identity.k8s.syd1.au.unkin.net. Internal Traefik,
+# external-dns at 198.18.200.4. Own leaf from the Vault PKI issuer via the
+# cert-manager gateway-shim; the common-name keys off this cluster host.
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  labels:
+    traefik.io/instance: internal
+  annotations:
+    cert-manager.io/cluster-issuer: vault-issuer
+    cert-manager.io/common-name: identity.k8s.syd1.au.unkin.net
+    cert-manager.io/private-key-size: "4096"
+    external-dns.alpha.kubernetes.io/hostname: identity.k8s.syd1.au.unkin.net
+    external-dns.alpha.kubernetes.io/target: 198.18.200.4
+  name: authentik-internal
+  namespace: authentik
+spec:
+  gatewayClassName: traefik-internal
+  listeners:
     - allowedRoutes:
         namespaces:
           from: Same
       hostname: identity.k8s.syd1.au.unkin.net
-      name: http-internal
+      name: http
       port: 80
       protocol: HTTP
     - allowedRoutes:
         namespaces:
           from: Same
       hostname: identity.k8s.syd1.au.unkin.net
-      name: https-internal
+      name: https
       port: 443
       protocol: HTTPS
       tls:

apps/base/authentik/httproute.yaml

@@ -7,16 +7,11 @@ metadata:
 spec:
   hostnames:
     - identity.unkin.net
-    - identity.k8s.syd1.au.unkin.net
   parentRefs:
     - group: gateway.networking.k8s.io
       kind: Gateway
       name: authentik
       sectionName: http
-    - group: gateway.networking.k8s.io
-      kind: Gateway
-      name: authentik
-      sectionName: http-internal
   rules:
     - filters:
         - type: RequestRedirect
@@ -36,16 +31,60 @@ metadata:
 spec:
   hostnames:
     - identity.unkin.net
-    - identity.k8s.syd1.au.unkin.net
   parentRefs:
     - group: gateway.networking.k8s.io
       kind: Gateway
       name: authentik
       sectionName: https
-    - group: gateway.networking.k8s.io
-      kind: Gateway
-      name: authentik
-      sectionName: https-internal
+  rules:
+    - backendRefs:
+        - group: ""
+          kind: Service
+          name: authentik-server
+          port: 80
+          weight: 1
+      matches:
+        - path:
+            type: PathPrefix
+            value: /
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: authentik-http-redirect-internal
+  namespace: authentik
+spec:
+  hostnames:
+    - identity.k8s.syd1.au.unkin.net
+  parentRefs:
+    - group: gateway.networking.k8s.io
+      kind: Gateway
+      name: authentik-internal
+      sectionName: http
+  rules:
+    - filters:
+        - type: RequestRedirect
+          requestRedirect:
+            scheme: https
+            statusCode: 301
+      matches:
+        - path:
+            type: PathPrefix
+            value: /
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: authentik-internal
+  namespace: authentik
+spec:
+  hostnames:
+    - identity.k8s.syd1.au.unkin.net
+  parentRefs:
+    - group: gateway.networking.k8s.io
+      kind: Gateway
+      name: authentik-internal
+      sectionName: https
   rules:
     - backendRefs:
         - group: ""

apps/base/bind-internal/authoritative/records.yaml

@@ -16,9 +16,9 @@ spec:
   type: A
   ttl: 600
   values:
-    # traefik-internal gateway VIP; the authentik Gateway serves the
+    # traefik-EXTERNAL (DMZ) gateway VIP; the authentik Gateway serves the
     # identity.unkin.net hostname there.
-    - 198.18.200.4
+    - 198.18.199.0
 ---
 # PRODUCTION CUTOVER RECORD — intentionally commented out.
 # git.unkin.net currently resolves to the LIVE VM forge (HAProxy VRRP VIP
@@ -135,6 +135,21 @@ spec:
 ---
 apiVersion: bind.unkin.net/v1alpha1
 kind: DNSRecord
+metadata:
+  name: cheeztv-dns-internal
+  namespace: bind-internal
+spec:
+  zoneRef: unkin-net
+  name: cheeztv
+  type: A
+  ttl: 600
+  values:
+    # traefik-internal gateway VIP; the cheeztv Gateway serves cheeztv.unkin.net
+    # there.
+    - 198.18.200.4
+---
+apiVersion: bind.unkin.net/v1alpha1
+kind: DNSRecord
 metadata:
   name: watchstate-dns-internal
   namespace: bind-internal

apps/base/cert-manager/certificate_wildcard-unkin-net.yaml

@@ -14,9 +14,9 @@ spec:
   secretTemplate:
     annotations:
       reflector.v1.k8s.emberstack.com/reflection-allowed: "true"
-      reflector.v1.k8s.emberstack.com/reflection-allowed-namespaces: "cheeztv"
+      reflector.v1.k8s.emberstack.com/reflection-allowed-namespaces: "cheeztv,arrstack,authentik,gitea,watchstate"
       reflector.v1.k8s.emberstack.com/reflection-auto-enabled: "true"
-      reflector.v1.k8s.emberstack.com/reflection-auto-namespaces: "cheeztv"
+      reflector.v1.k8s.emberstack.com/reflection-auto-namespaces: "cheeztv,arrstack,authentik,gitea,watchstate"
   privateKey:
     size: 4096
   dnsNames: