fix: startup script sources wrong config file for custom ports

The start-both.sh script was sourcing paqctl.conf which doesn't exist.
Changed to settings.conf where LISTEN_PORT and GFK_VIO_PORT are saved.

This caused iptables rules to always use default ports (8443/45000)
even when user configured different ports, resulting in port mismatch.

paqctl.sh

@@ -1600,7 +1600,7 @@ GFK_DIR="\${INSTALL_DIR}/gfk"
 ROLE="${ROLE}"
 
 # Source config for ports
-[ -f "\${INSTALL_DIR}/paqctl.conf" ] && . "\${INSTALL_DIR}/paqctl.conf"
+[ -f "\${INSTALL_DIR}/settings.conf" ] && . "\${INSTALL_DIR}/settings.conf"
 
 # Apply firewall rules (server only)
 if [ "\$ROLE" = "server" ]; then