feat(auth): routes HTTPS publiques du hub (auth./portail.funklab.online)

IngressRoutes websecure + certResolver Let's Encrypt pour Authentik et
Guacamole, en plus des routes internes *.lab.local (non destructif).
Cert auth.funklab.online émis et vérifié (issuer Let's Encrypt).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

k8s/apps/authentik/ingress-public.yaml

@@ -0,0 +1,18 @@
+# Accès public HTTPS — auth.funklab.online (cert Let's Encrypt auto).
+# S'ajoute à la route interne auth.lab.local (non destructif).
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: authentik-public
+  namespace: auth
+spec:
+  entryPoints:
+    - websecure
+  routes:
+    - match: Host(`auth.funklab.online`)
+      kind: Rule
+      services:
+        - name: authentik
+          port: 9000
+  tls:
+    certResolver: letsencrypt

k8s/apps/guacamole/ingress-public.yaml

@@ -0,0 +1,18 @@
+# Accès public HTTPS — portail.funklab.online (cert Let's Encrypt auto).
+# S'ajoute à la route interne portail.lab.local (non destructif).
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: guacamole-public
+  namespace: auth
+spec:
+  entryPoints:
+    - websecure
+  routes:
+    - match: Host(`portail.funklab.online`)
+      kind: Rule
+      services:
+        - name: guacamole
+          port: 8080
+  tls:
+    certResolver: letsencrypt