Simplify Caddy infrastructure to use file-based configuration instead of complex API registration system

roles/caddy/templates/systemd-override.conf.j2

@@ -1,8 +1,13 @@
 [Service]
-# Reload configuration with --force flag for reliability
+ExecStart=
+ExecStart=/usr/bin/caddy run --config {{ caddy_config_file }} --resume
+
 ExecReload=
 ExecReload=/usr/bin/caddy reload --config {{ caddy_config_file }} --force
 
+# Wait for API to be ready before considering service started
+ExecStartPost=/bin/bash -c 'until curl -s http://{{ caddy_admin_listen }}/config/ >/dev/null 2>&1; do sleep 1; done'
+
 {% if caddy_systemd_security | default(true) %}
 # Enhanced security hardening beyond base service  
 NoNewPrivileges=true
@@ -35,4 +40,4 @@ SystemCallErrorNumber=EPERM
 StandardOutput=journal
 StandardError=journal
 SyslogIdentifier=caddy
-{% endif %}
+{% endif %}