Add MQTT handover controller and systemd installer

meshcore-phone-mode.service

@@ -0,0 +1,28 @@
+# Zorruno — MeshCore Phone App Mode v1.0 — 2026-10-03
+[Unit]
+Description=MeshCore WebUI phone-app handover via MQTT
+After=network-online.target docker.service
+Wants=network-online.target docker.service
+
+[Service]
+Type=simple
+User=root
+ExecStart=/opt/meshcore-phone-mode/venv/bin/python /opt/meshcore-phone-mode/controller.py --config /etc/meshcore-phone-mode.ini
+Restart=on-failure
+RestartSec=10
+TimeoutStopSec=50
+Environment=PYTHONUNBUFFERED=1
+Environment=PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectHome=true
+ProtectSystem=strict
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectControlGroups=true
+RestrictSUIDSGID=true
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+UMask=0077
+
+[Install]
+WantedBy=multi-user.target