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.

audiobookshelf/roles/audiobookshelf/tasks/main.yaml

@@ -1,9 +1,4 @@
 ---
-# Audiobookshelf as a rootless Podman Quadlet unit.
-#
-# Everything here runs as {{ podman_user }} — the connection user. No become, no
-# XDG_RUNTIME_DIR: the SSH connection gave us a real PAM session, so systemd's
-# user manager is reachable through the standard environment.
 
 - name: Ensure the Audiobookshelf data directories exist
   ansible.builtin.file:
@@ -13,9 +8,7 @@
     group: "{{ podman_user }}"
     mode: '0755'
   loop:
-    # config/ and metadata/ are the irreplaceable 22 MB — absdatabase.sqlite,
-    # migrations, backups, cache, logs. audiobooks/ and podcasts/ are the
-    # library, which the app reads and podcast downloads are written into.
+    # config/ and metadata/ hold irreplaceable state; the media directories can be re-downloaded.
     - "{{ config_dir }}"
     - "{{ metadata_dir }}"
     - "{{ audiobooks_dir }}"
@@ -41,9 +34,7 @@
         state: started
         daemon_reload: true
   rescue:
-    # systemd reports "control process exited with error code" and nothing
-    # else, which is useless for the usual failures (an unattached network, an
-    # unwritable /config, a bad volume). Pull the real reason out.
+    # systemd reports only a generic exit error, so collect the real reason.
     - name: Collect Audiobookshelf diagnostics
       ansible.builtin.command: "{{ item }}"
       loop:
@@ -62,18 +53,15 @@
       ansible.builtin.fail:
         msg: "Audiobookshelf did not start — see the diagnostics above."
 
-# Quadlet honours [Install] WantedBy= when it generates the unit, so
-# `systemctl --user enable` is neither needed nor possible on a generated unit.
+# Quadlet honours WantedBy=, so systemctl enable is neither needed nor possible on a generated unit.
 - name: Verify Audiobookshelf is running
   ansible.builtin.command: "systemctl --user is-active {{ unit_name }}"
   register: audiobookshelf_active
   changed_when: false
   failed_when: audiobookshelf_active.stdout != 'active'
 
-# `is-active` says the container is running; it does not say the app can serve.
-# `Restart=always` means even a crash-looping container is reported active. The
-# image ships no HEALTHCHECK, so the unit defines one (HealthCmd=, see the
-# template) and this runs exactly that command once, synchronously.
+# is-active still reports active for a crash-looping container, and the image ships no HEALTHCHECK.
+# The unit defines one instead, and this runs exactly that command once.
 - name: Wait for Audiobookshelf to pass its health check
   ansible.builtin.command: "podman healthcheck run {{ container_name }}"
   register: audiobookshelf_health
@@ -88,10 +76,7 @@
   changed_when: false
   failed_when: audiobookshelf_mounts.rc != 0
 
-# The health check proves the server started — it exits 1 with EROFS if /config
-# is not writable — but not that /config is the *bind mount*. This does: the
-# database the app has just created has to appear on the host, not inside the
-# container's writable layer.
+# The health check proves the server started, not that /config is the bind mount.
 - name: Check the database landed on the host
   ansible.builtin.stat:
     path: "{{ config_dir }}/absdatabase.sqlite"
@@ -106,10 +91,7 @@
       container, visible on the host, so the bind mount is real.
   when: audiobookshelf_db.stat.exists
 
-# This is the check that catches a broken or missing Volume= line, which is the
-# one failure here that is silent: the app would run perfectly well with its
-# data in the container's writable layer, and lose all of it on the next
-# recreate.
+# A missing Volume= would let the app write to the container layer and lose the data on recreate.
 - name: Fail if the database is not on the host
   ansible.builtin.assert:
     that: audiobookshelf_db.stat.exists

audiobookshelf/roles/caddy/handlers/main.yaml

@@ -1,27 +1,15 @@
 ---
-# Caddy is its own playbook (caddy/playbook.yml) and a rootless Quadlet unit
-# there. These handlers run as the connection user, so `systemctl --user` and
-# `podman exec` work without any XDG_RUNTIME_DIR juggling.
 
-# Notified by this role when the Caddyfile changes. A reload keeps existing
-# connections; a restart would briefly drop every hosted site.
-#
-# Note the config path: /etc/caddy/Caddyfile is the mount inside the container,
-# not {{ caddyfile_path }}, which is the host side of it.
+# A reload keeps live connections; a restart would drop every hosted site.
+# The path is inside the container, not the host {{ caddyfile_path }}.
 - name: Reload Caddy configuration
   ansible.builtin.command: >-
     podman exec {{ caddy_name }} caddy reload --config /etc/caddy/Caddyfile
   changed_when: true
   listen: "Reload Caddy"
 
-# Notified by caddy/roles/register when this service's network unit, or the
-# drop-in that attaches Caddy to it, is written. Quadlet has no live equivalent
-# of `docker network connect`, so the container has to be recreated — a brief
-# restart of every hosted site, not just this one. See caddy/readme.md,
-# "Trade-off worth knowing".
-#
-# Defined after the reload above so that when both are notified the cheap
-# config reload happens first.
+# Quadlet cannot attach a network live, so Caddy must be recreated.
+# Defined after the reload so the cheap reload runs first when both are notified.
 - name: Restart Caddy
   ansible.builtin.systemd_service:
     name: "{{ caddy_name }}.service"

audiobookshelf/roles/caddy/tasks/main.yaml

@@ -1,14 +1,4 @@
 ---
-# Append this site's block to the shared Caddyfile.
-#
-# The Caddyfile is a bind mount into the Caddy container, so Caddy sees the
-# change as soon as the file is written; the handler only asks Caddy to re-read
-# it. That is a reload, not a restart, so the other hosted sites are untouched.
-#
-# blockinfile is idempotent on its own via the marker, so there is no need to
-# slurp the file and compare first — which also matters because slurp *fails*
-# when the Caddyfile does not exist yet, on a host where the Caddy playbook has
-# not run.
 
 - name: "Add the {{ host }} site block to the Caddyfile"
   ansible.builtin.blockinfile: