ansible: describe what runs on the servers

The roles had drifted far from production: Forgejo was pinned at 12
while 15.0.11 runs, its config lacked the mailer, packages and the real
database path, and several services existed only on the hosts. Running
a role would have rolled production back. Take the servers as the truth
and make the repository match them.

site.yaml now holds the desired state of both hosts:

 - base: unattended upgrades, fail2ban, Docker daemon config and the
   weekly image prune, as found on the hosts. New: a 500M journal cap,
   and the Docker systemd override is kept absent. That override once
   opened dockerd on tcp/2375 without authentication.
 - traefik: templates as deployed, version in a variable (v3.7.18).
   The Coraza WAF files are removed; no router ever used them.
 - forgejo: 15.0.11, app.ini generated from the live file with the
   secrets taken from the vault.
 - crawler_alert, sillytavern, minecraft, minecraft_fossils: added
   from the hosts.

Forgejo's canonical name becomes git.asxp.io; git.czsk.it stays as an
alias on the same router.

docker_service restarts a stack when its config changes, no longer
forces ownership on existing data directories, and hides template
diffs because they carry secrets. Containers listed in
service_graceful_stop are saved and stopped with a long timeout before
compose recreates them: Docker's 10 s default is too short for a
Minecraft world. Both game servers get stop_grace_period for the same
reason.

Removed: the full-deployment and runner playbooks with their prompts,
the Forgejo backup and restore roles for the old bare-metal host, and
inventory entries for services that were never deployed. SSH hardening
stays a manual playbook, since a mistake there locks everyone out.

New secrets (SMTP, RCON, CurseForge key) went into the vault.

Assisted-by: Claude:fable-5-2

ansible/roles/docker_service/defaults/main.yaml

@@ -1,34 +1,28 @@
 ---
-# Default variables for docker_service role
-# These can be overridden when including this role
+service_name: ""        # required, also the compose project name
+service_base_path: ""   # required, e.g. /opt/traefik
 
-# Service configuration
-service_name: ""  # REQUIRED: Name of the service (e.g., "traefik", "forgejo")
-service_base_path: ""  # REQUIRED: Base installation path (e.g., "/opt/traefik")
-
-# Directories to create under service_base_path
-# Format: list of dicts with 'path' and 'mode' keys
+# Each list item: path/dest plus optional owner, group, mode. Ownership and
+# mode are only enforced when given, so existing data directories keep theirs.
 service_directories: []
-# Example:
-#   - { path: "data", mode: "0755" }
-#   - { path: "config", mode: "0644" }
+service_templates: []   # src (template), dest
+service_files: []       # src (plain file, copied verbatim), dest
+service_absent: []      # paths under the base path that must not exist
 
-# Template files to deploy
-# Format: list of dicts with 'src', 'dest', and optional 'mode' keys
-service_templates: []
-# Example:
-#   - { src: "docker-compose.yml.j2", dest: "docker-compose.yml", mode: "0644" }
-#   - { src: "config.yaml.j2", dest: "config/config.yaml", mode: "0600" }
+# Containers to save and stop properly before compose recreates them:
+# - { container: name, timeout: 120, pre_stop: "docker exec ..." }
+service_graceful_stop: []
 
-# Docker compose configuration
-docker_compose_file: "docker-compose.yml"  # Name of the compose file
-docker_compose_project_name: "{{ service_name }}"  # Docker compose project name
+docker_compose_file: "docker-compose.yml"
+docker_compose_project_name: "{{ service_name }}"
 
-# Health check configuration
-health_check_enabled: true  # Whether to perform health check after deployment
-health_check_url: ""  # URL to check (empty = skip HTTP check)
-health_check_host: "localhost"  # Host to check port on (default: localhost)
-health_check_port: ""  # Port to check (empty = skip port check)
-health_check_delay: 10  # Seconds to wait before health check
-health_check_retries: 30  # Number of retries for health check
-health_check_retry_delay: 2  # Seconds between retries
+# A changed config file restarts the stack unless compose already recreated it
+service_restart_on_change: true
+
+health_check_enabled: true
+health_check_url: ""
+health_check_host: "localhost"
+health_check_port: ""
+health_check_delay: 10
+health_check_retries: 30
+health_check_retry_delay: 2