Cut the comment bloat from the Podman playbooks

Comment blocks now stay within three lines and explain only the non-obvious. Long histories, include examples, and commented-out code are gone. No task, key, or value changed; the only data change is comment text inside the generated unit files.

caddy/roles/register/tasks/main.yaml

@@ -1,33 +1,6 @@
 ---
-# Register a service's logical network with Caddy.
-#
-# Caddy is the *base* unit and knows nothing about its upstreams. Each service
-# adds itself by writing two files into the Quadlet directory:
-#
-#   1. its own <name>.network unit, and
-#   2. a drop-in next to caddy.container that pulls that network into Caddy.
-#
-# Caddy's own playbook never changes when a service is added or removed.
-#
-# Include this from a service playbook:
-#
-#   - name: Register this service with Caddy
-#     ansible.builtin.include_tasks: "{{ playbook_dir }}/../caddy/roles/register/tasks/main.yaml"
-#     vars:
-#       network_name: "{{ container_name }}"
-#
-# The including play must also run the `podman` role (for podman_user and
-# quadlet_dir) and define a "Restart Caddy" handler:
-#
-#   - name: Restart Caddy
-#     ansible.builtin.systemd_service:
-#       name: caddy.service
-#       scope: user
-#       state: restarted
-#       daemon_reload: true
-#     listen: Restart Caddy
-#
-# It runs as the connection user, which must be {{ podman_user }}.
+# Include from a service playbook with network_name set. The play must define
+# the "Restart Caddy" handler.
 
 - name: "Create the {{ network_name }} network unit"
   ansible.builtin.copy:
@@ -36,15 +9,8 @@
     group: "{{ podman_user }}"
     mode: '0644'
     content: |
-      # {{ network_name }} — logical app network.
-      # Managed by Ansible. Do not edit by hand.
-      #
-      # NetworkName pins the Podman network name. Without it Quadlet would
-      # create "systemd-{{ network_name }}".
-      #
-      # isolate blocks traffic between separate Podman networks, so a container
-      # on this network cannot reach one that is only on another. Caddy and any
-      # shared service still reach it, because they are members of it.
+      # Managed by Ansible. NetworkName pins the Podman name; isolate blocks
+      # traffic between separate networks.
       [Network]
       NetworkName={{ network_name }}_net
       Options=isolate=true
@@ -57,10 +23,8 @@
     group: "{{ podman_user }}"
     mode: '0644'
     content: |
-      # Added by the {{ network_name }} playbook. Do not edit by hand.
-      #
-      # Quadlet merges this into caddy.container. Deleting this file removes
-      # the network from Caddy on the next daemon-reload.
+      # Added by {{ network_name }}. Deleting it detaches the network from
+      # Caddy on the next daemon-reload.
       [Container]
       Network={{ network_name }}.network
   notify: Restart Caddy