feat(demo): add full inventories for mbazürich and phbern

Both demo sites had only a hosts.yml, so every role ran on its
defaults (authentik.local.test etc.) and nothing was reachable under
the real FQDN. Add the complete group_vars + host_vars analogous to
gymburgdorf, with the mbaz.souveredu.ch / phbe.souveredu.ch domain
bases, matching Bao mounts, DMZ split-horizon (public + *.int.*),
authentik OIDC/LDAP/proxy outposts, nextcloud with S3+LDAP+OIDC,
collabora, drawio, garage, send, opnform, homarr and bookstack.

authentik_domains lists the *.int.* name too so Traefik requests a
cert the DMZ can verify; the storage proxy outpost carries a config
block (required by the outpost blueprint serializer).

inventories/demo-phbern/host_vars/application/authentik.yml

@@ -0,0 +1,167 @@
+---
+# Bao secret expected at <mount>/data/authentik with keys:
+#   secret_key, postgres_password, admin_password,
+#   ldap_outpost_token, proxy_outpost_token,
+#   nextcloud_oidc_secret, opnform_oidc_secret,
+#   homarr_oidc_secret, bookstack_oidc_secret
+_authentik: "{{ lookup('community.hashi_vault.hashi_vault', vault_mount + '/data/authentik', url=vault_addr) }}"
+
+# First entry is the canonical public FQDN (browsers + OIDC iss-claim).
+# The *.int.* entry makes the router match the internal name too, so
+# Traefik requests a cert covering it — the DMZ reverseproxy uses
+# auth.int.phbe as backend_host and verifies the chain (acme mode,
+# no insecureSkipVerify), which fails against the default cert otherwise.
+authentik_domains:
+  - "auth.phbe.souveredu.ch"
+  - "auth.int.phbe.souveredu.ch"
+
+authentik_secret_key: "{{ _authentik.secret_key }}"
+authentik_postgres_password: "{{ _authentik.postgres_password }}"
+
+# LDAP outpost (provider for nextcloud)
+authentik_ldap_apps:
+  - slug: ldap
+    name: LDAP
+    base_dn: "dc=phbe,dc=souveredu,dc=ch"
+    search_group: admins
+
+authentik_ldap_outpost:
+  name: "ldap-outpost"
+  token: "{{ _authentik.ldap_outpost_token }}"
+  config:
+    # Outpost pulls config from authentik over the public FQDN, which
+    # resolves (internal DNS view) to the DMZ reverseproxy the backend
+    # subnet can reach — keeps the round-trip in the LAN with a valid cert.
+    authentik_host: "https://auth.phbe.souveredu.ch/"
+    log_level: "info"
+
+# Proxy providers (ForwardAuth) — gate downstream services behind
+# authentik. The embedded outpost (which authentik ships out of the box)
+# hosts these providers under /outpost.goauthentik.io/auth/traefik on the
+# canonical FQDN; the service-side traefik attaches a ForwardAuth
+# middleware that talks to that endpoint.
+authentik_proxy_apps:
+  - slug: drawio
+    name: Drawio
+    external_host: "https://draw.phbe.souveredu.ch"
+    internal_host: "http://drawio:8080"
+    # drawio is embedded in Nextcloud as an iframe (nextcloud_enable_drawio).
+    # Every authenticated Nextcloud user must therefore pass the ForwardAuth
+    # gate, otherwise the editor loads a 403 inside the iframe. Allow both
+    # standard groups; tightening this back to admins-only would break the
+    # Nextcloud integration for regular users.
+    allowed_groups:
+      - admins
+      - users
+    flows:
+      authentication_slug: default-authentication-flow
+      authorization_slug: default-provider-authorization-implicit-consent
+      invalidation_slug: default-provider-invalidation-flow
+  - slug: garage-webui
+    name: "Garage S3 Console"
+    external_host: "https://console.s3.phbe.souveredu.ch"
+    internal_host: "http://garage-webui:3909"
+    allowed_groups:
+      - admins
+    flows:
+      authentication_slug: default-authentication-flow
+      authorization_slug: default-provider-authorization-implicit-consent
+      invalidation_slug: default-provider-invalidation-flow
+
+# Outpost bindings. drawio runs on this (application) host, so its
+# ForwardAuth can use the embedded outpost (same host:9000 as the
+# authentik server). garage-webui runs on the storage host; a cross-host
+# ForwardAuth to the embedded outpost arrives with a mangled
+# X-Forwarded-Host (an extra reverseproxy hop appends :443 / a comma list)
+# and the outpost then fails to match the provider's external_host (404).
+# So garage-webui is bound to a dedicated proxy outpost deployed on
+# storage (role digitalboard.core.authentik_outpost_proxy), whose
+# ForwardAuth endpoint the local storage Traefik reaches over the docker
+# network — no extra hop, clean X-Forwarded-Host.
+authentik_proxy_outposts:
+  - name: "authentik Embedded Outpost"
+    type: proxy
+    providers:
+      - drawio
+  - name: "storage-proxy-outpost"
+    type: proxy
+    token: "{{ _authentik.proxy_outpost_token }}"
+    providers:
+      - garage-webui
+    # config is required by the outpost blueprint serializer. The outpost
+    # runs on the storage host and reaches authentik over the public FQDN
+    # (resolves to the DMZ reverseproxy the storage subnet can reach).
+    config:
+      authentik_host: "https://auth.phbe.souveredu.ch/"
+      log_level: "info"
+
+# OIDC clients
+authentik_oidc_apps:
+  - slug: nextcloud
+    name: Nextcloud
+    client_id: nextcloud
+    client_secret: "{{ _authentik.nextcloud_oidc_secret }}"
+    redirect_uris:
+      - url: "https://cloud.phbe.souveredu.ch/apps/user_oidc/code"
+        matching_mode: strict
+    signing_key_name: "authentik Self-signed Certificate"
+    flows:
+      authorization_slug: default-provider-authorization-implicit-consent
+      invalidation_slug: default-provider-invalidation-flow
+    scopes: [openid, email, profile, offline_access]
+  - slug: opnform
+    name: OpnForm
+    client_id: opnform
+    client_secret: "{{ _authentik.opnform_oidc_secret }}"
+    redirect_uris:
+      - url: "https://forms.phbe.souveredu.ch/auth/authentik/callback"
+        matching_mode: strict
+    signing_key_name: "authentik Self-signed Certificate"
+    flows:
+      authorization_slug: default-provider-authorization-implicit-consent
+      invalidation_slug: default-provider-invalidation-flow
+    # No separate `groups` scope — authentik's default `profile` mapping
+    # already emits a `groups` claim built from request.user.groups, so
+    # OpnForm's admin-group mapping works without an extra scope.
+    scopes: [openid, email, profile]
+  - slug: homarr
+    name: Homarr
+    client_id: homarr
+    client_secret: "{{ _authentik.homarr_oidc_secret }}"
+    redirect_uris:
+      - url: "https://home.phbe.souveredu.ch/api/auth/callback/oidc"
+        matching_mode: strict
+    signing_key_name: "authentik Self-signed Certificate"
+    flows:
+      authorization_slug: default-provider-authorization-implicit-consent
+      invalidation_slug: default-provider-invalidation-flow
+    scopes: [openid, email, profile]
+  - slug: bookstack
+    name: BookStack
+    client_id: bookstack
+    client_secret: "{{ _authentik.bookstack_oidc_secret }}"
+    redirect_uris:
+      - url: "https://wiki.phbe.souveredu.ch/oidc/callback"
+        matching_mode: strict
+    signing_key_name: "authentik Self-signed Certificate"
+    flows:
+      authorization_slug: default-provider-authorization-implicit-consent
+      invalidation_slug: default-provider-invalidation-flow
+    scopes: [openid, email, profile]
+
+authentik_groups:
+  - name: admins
+  - name: users
+  - name: opnform-admins
+  - name: homarr-admins
+  - name: bookstack-admins
+
+authentik_local_users:
+  - username: akadmin
+    name: "Authentik Admin"
+    email: "admin@phbe.souveredu.ch"
+    password: "{{ _authentik.admin_password }}"
+    is_active: true
+    groups:
+      - authentik Admins
+      - admins

inventories/demo-phbern/host_vars/application/authentik_outpost_ldap.yml

@@ -0,0 +1,13 @@
+---
+# Same token as authentik_ldap_outpost.token above — outpost uses it to
+# authenticate against the authentik server it talks to.
+_authentik: "{{ lookup('community.hashi_vault.hashi_vault', vault_mount + '/data/authentik', url=vault_addr) }}"
+
+# Public FQDN resolves (internal DNS view) to the DMZ reverseproxy the
+# backend subnet can reach, so the outpost->authentik round-trip stays in
+# the LAN with a valid cert and matches the iss claim authentik emits.
+authentik_outpost_ldap_host: "https://auth.phbe.souveredu.ch"
+authentik_outpost_ldap_token: "{{ _authentik.ldap_outpost_token }}"
+# auth.phbe.* presents a valid Let's Encrypt cert via the reverseproxy, so
+# verify the chain instead of relying on the role's insecure default.
+authentik_outpost_ldap_insecure: "false"

inventories/demo-phbern/host_vars/application/bookstack.yml

@@ -0,0 +1,36 @@
+---
+# Bao secret <mount>/data/bookstack expected to contain:
+#   db_root_password, db_password, admin_password, oidc_client_secret,
+#   app_key (optional — only set when restoring)
+_bookstack: "{{ lookup('community.hashi_vault.hashi_vault', vault_mount + '/data/bookstack', url=vault_addr) }}"
+
+bookstack_domain: "wiki.phbe.souveredu.ch"
+bookstack_extra_domains:
+  - "wiki.int.phbe.souveredu.ch"
+bookstack_base_url: "https://wiki.phbe.souveredu.ch"
+
+# Override the role-default certresolver ("le") with the value used
+# across this demo (matches traefik_ssl_cert_resolver in group_vars).
+bookstack_traefik_certresolver: "dns"
+
+bookstack_db_root_password: "{{ _bookstack.db_root_password }}"
+bookstack_db_password: "{{ _bookstack.db_password }}"
+bookstack_admin_password: "{{ _bookstack.admin_password }}"
+bookstack_admin_email: "admin@phbe.souveredu.ch"
+bookstack_admin_name: "BookStack Admin"
+
+# OIDC against Authentik. BookStack compares OIDC_ISSUER strictly against
+# the `iss` claim in the discovery response, and Authentik emits the
+# public auth.phbe.* hostname there, so the issuer must use the public
+# FQDN. That FQDN resolves (internal DNS view) to the DMZ reverseproxy,
+# which the backend subnet can reach, so the server-to-server calls stay
+# in the LAN.
+bookstack_oidc_enabled: true
+bookstack_oidc_name: "Authentik"
+bookstack_oidc_issuer: "https://auth.phbe.souveredu.ch/application/o/bookstack/"
+bookstack_oidc_client_id: "bookstack"
+bookstack_oidc_client_secret: "{{ _bookstack.oidc_client_secret }}"
+bookstack_oidc_additional_scopes: "openid profile email"
+bookstack_oidc_user_to_groups: true
+bookstack_oidc_groups_claim: "groups"
+bookstack_oidc_auto_initiate: false

inventories/demo-phbern/host_vars/application/collabora.yml

@@ -0,0 +1,16 @@
+---
+# First entry is the canonical public FQDN. Additional entries cover
+# internal *.int.* names so nextcloud's WOPI discovery hits collabora
+# in the LAN with a valid internal cert.
+collabora_domains:
+  - "office.phbe.souveredu.ch"
+  - "office.int.phbe.souveredu.ch"
+
+# Hosts allowed to issue WOPI calls. Both names are listed so collabora
+# accepts the callback from nextcloud regardless of which FQDN it uses.
+collabora_allowed_domains:
+  - "cloud.phbe.souveredu.ch"
+  - "cloud.int.phbe.souveredu.ch"
+
+collabora_frame_ancestors:
+  - "cloud.phbe.souveredu.ch"

inventories/demo-phbern/host_vars/application/drawio.yml

@@ -0,0 +1,20 @@
+---
+drawio_domain: "draw.phbe.souveredu.ch"
+
+# Internal FQDN the DMZ reverseproxy uses as backend host so its TLS
+# verify matches a cert SAN (the canonical IP-only route has no SAN
+# and breaks with "cannot validate certificate ... no IP SANs"). Same
+# split-horizon pattern as cloud.int.* / auth.int.* / office.int.*.
+drawio_extra_domains:
+  - "draw.int.phbe.souveredu.ch"
+
+# Gate drawio behind the authentik embedded outpost. The allow-list is
+# managed on the authentik proxy application (admins + users) so the
+# Nextcloud drawio iframe works for every authenticated user.
+# ForwardAuth talks to the embedded outpost on the authentik server's
+# in-network address. Going via the public FQDN routes through a second
+# traefik hop that strips/rewrites X-Forwarded-Host, which breaks
+# authentik's provider matching (it returns 404). Plain HTTP to the
+# container is the path docs recommend for the embedded outpost.
+drawio_authentik_forward_auth: true
+drawio_authentik_forward_auth_url: "http://authentik-server-1:9000/outpost.goauthentik.io/auth/traefik"

inventories/demo-phbern/host_vars/application/homarr.yml

@@ -0,0 +1,78 @@
+---
+# Bao secret <mount>/data/homarr expected to contain:
+#   secret_encryption_key (64 hex chars), admin_password, oidc_client_secret
+_homarr: "{{ lookup('community.hashi_vault.hashi_vault', vault_mount + '/data/homarr', url=vault_addr) }}"
+
+homarr_domain: "home.phbe.souveredu.ch"
+homarr_extra_domains:
+  - "home.int.phbe.souveredu.ch"
+homarr_base_url: "https://home.phbe.souveredu.ch"
+
+homarr_secret_encryption_key: "{{ _homarr.secret_encryption_key }}"
+homarr_admin_username: "admin"
+homarr_admin_email: "admin@phbe.souveredu.ch"
+homarr_admin_password: "{{ _homarr.admin_password }}"
+
+# OIDC against Authentik. credentials provider stays enabled as a
+# break-glass account — reach it via /auth/login/credentials when
+# AUTH_OIDC_AUTO_LOGIN bypasses the normal /login page.
+#
+# Issuer must match the `iss` claim authentik emits, which is always the
+# public FQDN. Homarr (oauth4webapi) does a strict 1:1 comparison between
+# the discovery response's issuer and this URL — an internal FQDN here
+# fails with OAUTH_JSON_ATTRIBUTE_COMPARISON_FAILED. The public FQDN
+# resolves (internal DNS view) to the DMZ reverseproxy, which the backend
+# subnet can reach, so discovery/token/userinfo stay in the LAN.
+homarr_auth_providers: "credentials,oidc"
+homarr_oidc_issuer: "https://auth.phbe.souveredu.ch/application/o/homarr/"
+homarr_oidc_client_id: "homarr"
+homarr_oidc_client_secret: "{{ _homarr.oidc_client_secret }}"
+homarr_oidc_client_name: "Authentik"
+homarr_oidc_scopes: "openid profile email groups"
+homarr_oidc_groups_attribute: "groups"
+homarr_oidc_auto_login: "true"
+
+# Default board with shortcuts to the other phbern services. Width
+# values describe horizontal grid cells (1-10 desktop / 6 tablet / 2
+# mobile, packed left-to-right).
+homarr_apps:
+  - id: nextcloud
+    name: Nextcloud
+    description: "Cloud Storage & Collaboration"
+    icon: https://cdn.jsdelivr.net/gh/walkxcode/dashboard-icons/png/nextcloud.png
+    href: https://cloud.phbe.souveredu.ch
+    width: 2
+  - id: collabora
+    name: Collabora Office
+    icon: https://cdn.jsdelivr.net/gh/walkxcode/dashboard-icons/png/collaboraonline.png
+    href: https://office.phbe.souveredu.ch
+    width: 2
+  - id: drawio
+    name: Draw.io
+    icon: https://cdn.jsdelivr.net/gh/walkxcode/dashboard-icons/png/drawio.png
+    href: https://draw.phbe.souveredu.ch
+    width: 2
+  - id: send
+    name: Send
+    description: "Encrypted file-share"
+    icon: https://cdn.jsdelivr.net/gh/walkxcode/dashboard-icons/png/firefox-send.png
+    href: https://send.phbe.souveredu.ch
+    width: 2
+  - id: opnform
+    name: OpnForm
+    description: "Self-hosted forms"
+    icon: https://cdn.jsdelivr.net/gh/walkxcode/dashboard-icons/png/opnform.png
+    href: https://forms.phbe.souveredu.ch
+    width: 2
+  - id: bookstack
+    name: BookStack
+    description: "Wiki & documentation"
+    icon: https://cdn.jsdelivr.net/gh/walkxcode/dashboard-icons/png/bookstack.png
+    href: https://wiki.phbe.souveredu.ch
+    width: 2
+  - id: authentik
+    name: Authentik
+    description: "Identity provider"
+    icon: https://cdn.jsdelivr.net/gh/walkxcode/dashboard-icons/png/authentik.png
+    href: https://auth.phbe.souveredu.ch
+    width: 2

inventories/demo-phbern/host_vars/application/main.yml

@@ -0,0 +1,3 @@
+---
+# application host runs: authentik, authentik-ldap-outpost,
+# nextcloud, collabora, drawio, send, opnform, homarr, bookstack

inventories/demo-phbern/host_vars/application/nextcloud.yml

@@ -0,0 +1,121 @@
+---
+# Bao secret <mount>/data/nextcloud expected to contain:
+#   postgres_password, admin_password
+_nextcloud: "{{ lookup('community.hashi_vault.hashi_vault', vault_mount + '/data/nextcloud', url=vault_addr) }}"
+_authentik: "{{ lookup('community.hashi_vault.hashi_vault', vault_mount + '/data/authentik', url=vault_addr) }}"
+
+# No nextcloud_image pin: the role default (nextcloud:fpm) already ships
+# the fix for the PHP UserConfig::getValueBool TypeError (#59629).
+
+# First entry is the canonical public FQDN (used for OVERWRITEHOST and
+# OIDC redirects). Additional entries cover internal *.int.* names so
+# collabora's WOPI callbacks hit nextcloud on a name with a valid
+# internal cert instead of routing through the DMZ.
+nextcloud_domains:
+  - "cloud.phbe.souveredu.ch"
+  - "cloud.int.phbe.souveredu.ch"
+nextcloud_postgres_password: "{{ _nextcloud.postgres_password }}"
+nextcloud_admin_user: admin
+nextcloud_admin_password: "{{ _nextcloud.admin_password }}"
+
+nextcloud_enable_notify_push: true
+# Use the internal FQDN for the notify_push setup check so curl from the
+# nextcloud container hits the local traefik directly instead of
+# hairpinning through the DMZ reverseproxy.
+nextcloud_notify_push_domain: "cloud.int.phbe.souveredu.ch"
+
+# Collabora integration
+# wopi_url (server-to-server: nextcloud calls collabora for discovery /
+# capabilities) goes to the internal FQDN so the call stays in the LAN.
+# public_wopi_url is what the browser loads the office iframe from — that
+# stays on the public name reachable through the DMZ.
+nextcloud_enable_collabora: true
+nextcloud_collabora_domain: "office.int.phbe.souveredu.ch"
+nextcloud_collabora_public_domain: "office.phbe.souveredu.ch"
+
+# Draw.io integration
+nextcloud_enable_drawio: true
+nextcloud_drawio_url: "https://draw.phbe.souveredu.ch"
+
+nextcloud_apps_to_install:
+  - groupfolders
+  - richdocuments
+  - spreed
+  - user_ldap
+  - user_oidc
+  - whiteboard
+  - drawio
+  - files_lock
+  - notify_push
+
+# S3 primary storage via Garage — server-to-server, so use the internal FQDN.
+# Resolves through the internal DNS to the storage host and presents a valid
+# cert from the local traefik on storage.
+nextcloud_use_s3_storage: true
+nextcloud_s3_key: "{{ lookup('digitalboard.core.garage_credentials', 'nextcloud', host='storage')['key_id'] }}"
+nextcloud_s3_secret: "{{ lookup('digitalboard.core.garage_credentials', 'nextcloud', host='storage')['secret_key'] }}"
+nextcloud_s3_bucket: "nextcloud"
+nextcloud_s3_host: "s3.int.phbe.souveredu.ch"
+nextcloud_s3_port: 443
+nextcloud_s3_ssl: true
+nextcloud_s3_usepath_style: true
+
+# OIDC discovery/token/userinfo and the S3 backend both target FQDNs
+# that resolve to RFC1918 addresses (auth.phbe.* via the reverseproxy,
+# s3.int.* directly), which Nextcloud's DnsPinMiddleware would otherwise
+# block as "local server access".
+nextcloud_allow_local_remote_servers: true
+
+# Share the LDAP docker network with the authentik LDAP outpost
+nextcloud_extra_networks:
+  - ldap
+
+# LDAP backend (Authentik LDAP outpost)
+nextcloud_ldap_enabled: true
+nextcloud_ldap_config:
+  ldapHost: "ldap://authentik-outpost-ldap-ldap-1"
+  ldapPort: "3389"
+  ldapAgentName: "cn=akadmin,ou=users,dc=phbe,dc=souveredu,dc=ch"
+  ldapAgentPassword: "{{ _authentik.admin_password }}"
+  ldapBase: "dc=phbe,dc=souveredu,dc=ch"
+  ldapBaseUsers: "ou=users,dc=phbe,dc=souveredu,dc=ch"
+  ldapTLS: "0"
+  turnOffCertCheck: "1"
+  ldapUserFilter: "(&(objectClass=user)(cn=*))"
+  ldapUserFilterObjectclass: "user"
+  ldapLoginFilter: "(&(objectClass=user)(cn=%uid))"
+  ldapLoginFilterUsername: "1"
+  ldapUserDisplayName: "cn"
+  ldapEmailAttribute: "mail"
+  ldapExpertUsernameAttr: "cn"
+  ldapExpertUUIDUserAttr: "uid"
+  ldapExpertUUIDGroupAttr: "uid"
+  ldapBaseGroups: "ou=groups,dc=phbe,dc=souveredu,dc=ch"
+  ldapGroupFilter: "(&(objectClass=group))"
+  ldapGroupFilterObjectclass: "group"
+  ldapGroupDisplayName: "cn"
+  ldapGroupMemberAssocAttr: "member"
+  ldapAdminGroup: "admins"
+  ldapCacheTTL: "600"
+  ldapPagingSize: "500"
+  ldapExperiencedAdmin: "1"
+  ldapConfigurationActive: "1"
+
+# OIDC providers for login (Authentik)
+nextcloud_oidc_providers:
+  - identifier: authentik
+    display_name: "Login with Authentik"
+    client_id: nextcloud
+    client_secret: "{{ _authentik.nextcloud_oidc_secret }}"
+    # Discovery via the public FQDN. It resolves (internal DNS view) to
+    # the DMZ reverseproxy, which the backend subnet can now reach, so
+    # the server-to-server call stays in the LAN while the iss claim and
+    # all listed endpoints match the public hostname the browser sees
+    # during login — no host-rewrite or /etc/hosts pin needed.
+    discovery_url: "https://auth.phbe.souveredu.ch/application/o/nextcloud/.well-known/openid-configuration"
+    scope: "openid email profile"
+    unique_uid: true
+    mapping:
+      uid: preferred_username
+      display_name: name
+      email: email

inventories/demo-phbern/host_vars/application/opnform.yml

@@ -0,0 +1,50 @@
+---
+# Bao secret <mount>/data/opnform expected to contain:
+#   app_key (must start with "base64:"), jwt_secret, front_api_secret,
+#   db_password, admin_password, oidc_client_secret
+_opnform: "{{ lookup('community.hashi_vault.hashi_vault', vault_mount + '/data/opnform', url=vault_addr) }}"
+_authentik: "{{ lookup('community.hashi_vault.hashi_vault', vault_mount + '/data/authentik', url=vault_addr) }}"
+
+opnform_domain: "forms.phbe.souveredu.ch"
+opnform_extra_domains:
+  - "forms.int.phbe.souveredu.ch"
+opnform_base_url: "https://forms.phbe.souveredu.ch"
+
+opnform_app_key: "{{ _opnform.app_key }}"
+opnform_jwt_secret: "{{ _opnform.jwt_secret }}"
+opnform_front_api_secret: "{{ _opnform.front_api_secret }}"
+opnform_db_password: "{{ _opnform.db_password }}"
+
+# Bootstrap admin via API on first run so the manual setup page is
+# skipped. The admin credentials are also required to seed the OIDC
+# IdentityConnection through OpnForm's API (only an authenticated admin
+# can create connections).
+opnform_admin_name: "OpnForm Admin"
+opnform_admin_email: "admin@phbe.souveredu.ch"
+opnform_admin_password: "{{ _opnform.admin_password }}"
+
+# OIDC against Authentik. The public auth.phbe.* FQDN resolves (internal
+# DNS view) to the DMZ reverseproxy, which the backend subnet can reach,
+# so OpnForm's discovery/token/userinfo calls stay in the LAN while the
+# iss claim matches the public hostname browsers see during login.
+opnform_oidc_enabled: true
+# Issuer must use the public FQDN: OpnForm validates the token's `iss`
+# claim against this value, and Authentik emits the public hostname there.
+opnform_oidc_issuer: "https://auth.phbe.souveredu.ch/application/o/opnform/"
+opnform_oidc_client_id: "opnform"
+opnform_oidc_client_secret: "{{ _opnform.oidc_client_secret }}"
+opnform_oidc_client_name: "Authentik"
+opnform_oidc_slug: "authentik"
+opnform_oidc_domain: "phbe.souveredu.ch"
+opnform_oidc_admin_group: "opnform-admins"
+
+# Disable password login entirely — every user goes through Authentik.
+# All real users have @phbe.souveredu.ch addresses (matching
+# opnform_oidc_domain above), so no password fallback is needed.
+opnform_oidc_force_login: true
+
+# `/` and `/login` are intercepted and jump straight to Authentik.
+# Public form deep-links (`/forms/<slug>`, `/admin/...`) keep working.
+# Break-glass: /login?bypass=1 reaches the email form when the IdP is
+# down.
+opnform_oidc_sso_entrypoint: true

inventories/demo-phbern/host_vars/application/send.yml

@@ -0,0 +1,8 @@
+---
+# Send: anonymized self-hosted file-share (no login). First entry is the
+# canonical public FQDN (used as BASE_URL); the *.int.* entry covers the
+# server-to-server hop from the DMZ reverseproxy with a cert SAN that
+# matches the backend hostname (same split-horizon pattern as cloud/draw).
+send_domains:
+  - "send.phbe.souveredu.ch"
+  - "send.int.phbe.souveredu.ch"

inventories/demo-phbern/host_vars/application/traefik.yml

@@ -0,0 +1,46 @@
+---
+# Services hosted on `application` that the DMZ reverseproxy should
+# forward public traffic to. The DMZ traefik picks this up via
+# hostvars[backend].traefik_dmz_exposed_services and renders a router +
+# service for each entry into /config/services.yml.
+traefik_dmz_exposed_services:
+  - name: authentik
+    domain: auth.phbe.souveredu.ch
+    backend_host: auth.int.phbe.souveredu.ch
+    port: 443
+    protocol: https
+  - name: nextcloud
+    domain: cloud.phbe.souveredu.ch
+    backend_host: cloud.int.phbe.souveredu.ch
+    port: 443
+    protocol: https
+  - name: collabora
+    domain: office.phbe.souveredu.ch
+    backend_host: office.int.phbe.souveredu.ch
+    port: 443
+    protocol: https
+  - name: drawio
+    domain: draw.phbe.souveredu.ch
+    backend_host: draw.int.phbe.souveredu.ch
+    port: 443
+    protocol: https
+  - name: send
+    domain: send.phbe.souveredu.ch
+    backend_host: send.int.phbe.souveredu.ch
+    port: 443
+    protocol: https
+  - name: opnform
+    domain: forms.phbe.souveredu.ch
+    backend_host: forms.int.phbe.souveredu.ch
+    port: 443
+    protocol: https
+  - name: homarr
+    domain: home.phbe.souveredu.ch
+    backend_host: home.int.phbe.souveredu.ch
+    port: 443
+    protocol: https
+  - name: bookstack
+    domain: wiki.phbe.souveredu.ch
+    backend_host: wiki.int.phbe.souveredu.ch
+    port: 443
+    protocol: https