feat: domain list refactor + demo-gymburgdorf fixes

- Refactor: collapse `*_domain` + `*_extra_domains` into a single
  `*_domains` list across authentik, collabora, garage and nextcloud
  roles. First entry is the canonical FQDN (used for OVERWRITEHOST,
  BASE_URL, notify_push setup and garage root_domain).
- Authentik blueprint: guard the OAuth sources block so an empty
  `authentik_login_sources` no longer renders an invalid YAML key.
- Nextcloud: introduce `nextcloud_collabora_public_domain` and set
  Collabora's `public_wopi_url` separately from the server-to-server
  `wopi_url` so browsers can reach Collabora via the public name while
  Nextcloud still talks to it on the internal one.
- Nextcloud: URL-encode the postgres user/password in DATABASE_URL.

roles/garage/defaults/main.yml

@@ -13,7 +13,11 @@ garage_docker_volume_dir: "{{ docker_volume_base_dir }}/{{ garage_service_name }
 
 # Garage service configuration
 garage_image: "dxflrs/garage:v2.1.0"
-garage_s3_domain: "storage.local.test"
+# FQDNs the garage S3 router accepts. The first entry is the canonical
+# domain and is also used as the virtual-hosted-style root_domain in
+# garage.toml; further entries cover internal *.int.* names.
+garage_s3_domains:
+  - "storage.local.test"
 garage_web_domain: "web.storage.local.test"
 garage_webui_domain: "console.storage.local.test"
 

roles/garage/templates/docker-compose.yml.j2

@@ -14,10 +14,13 @@ services:
       - traefik.enable=true
       - traefik.docker.network={{ garage_traefik_network }}
       # S3 API endpoint
-      - traefik.http.routers.{{ garage_service_name }}.rule=Host(`{{ garage_s3_domain }}`)
+      - traefik.http.routers.{{ garage_service_name }}.rule=Host({% for d in garage_s3_domains %}`{{ d }}`{% if not loop.last %}, {% endif %}{% endfor %})
 {% if garage_use_ssl %}
       - traefik.http.routers.{{ garage_service_name }}.entrypoints=websecure
       - traefik.http.routers.{{ garage_service_name }}.tls=true
+{% if traefik_cert_mode | default('selfsigned') == 'acme' %}
+      - traefik.http.routers.{{ garage_service_name }}.tls.certresolver={{ traefik_ssl_cert_resolver | default('dns') }}
+{% endif %}
 {% else %}
       - traefik.http.routers.{{ garage_service_name }}.entrypoints=web
 {% endif %}
@@ -48,6 +51,9 @@ services:
 {% if garage_use_ssl %}
       - traefik.http.routers.{{ garage_service_name }}-console.entrypoints=websecure
       - traefik.http.routers.{{ garage_service_name }}-console.tls=true
+{% if traefik_cert_mode | default('selfsigned') == 'acme' %}
+      - traefik.http.routers.{{ garage_service_name }}-console.tls.certresolver={{ traefik_ssl_cert_resolver | default('dns') }}
+{% endif %}
 {% else %}
       - traefik.http.routers.{{ garage_service_name }}-console.entrypoints=web
 {% endif %}

roles/garage/templates/garage.toml.j2

@@ -14,7 +14,7 @@ rpc_secret = "{{ garage_rpc_secret }}"
 [s3_api]
 s3_region = "{{ garage_s3_region }}"
 api_bind_addr = "[::]:{{ garage_s3_api_port }}"
-root_domain = ".s3.{{ garage_s3_domain }}"
+root_domain = ".s3.{{ garage_s3_domains[0] }}"
 
 [s3_web]
 bind_addr = "[::]:{{ garage_s3_web_port }}"