Merge authentik-quadlet-fix: Integrate working authentik implementation

Merge completed authentik Quadlet implementation that resolves all deployment
issues and enables external HTTPS access. This brings the working solution
developed and tested on authentik-quadlet-fix branch into main.

All systemd services now generate correctly and authentik is fully operational
at https://auth.jnss.me with proper SSL termination via Caddy.

roles/postgresql/templates/postgresql.conf.j2

@@ -3,6 +3,11 @@
 # PostgreSQL's excellent defaults are used except for essentials
 
 # Network and Security
+{% if postgresql_unix_socket_enabled %}
+# Unix Socket Configuration
+unix_socket_directories = '{{ postgresql_unix_socket_directories }}'
+unix_socket_permissions = {{ postgresql_unix_socket_permissions }}
+{% endif %}
 listen_addresses = '{{ postgresql_listen_addresses }}'
 port = {{ postgresql_port }}