Add trigger-based host routing restart (no SSH needed)

- Add runtime volume mount for trigger files
- cisco-vpn now creates /runtime/restart-routing trigger file
- Host systemd path watcher handles restart

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/rego-tunnel/docker-compose.yml

@@ -19,6 +19,7 @@ services:
       - ${APP_PORT}:6080
     volumes:
       - ${APP_DATA_DIR}/config:/config
+      - ${APP_DATA_DIR}/runtime:/runtime
       - /etc/runtipi/repos/runtipi/apps/rego-tunnel/shared:/shared
       - /sys/fs/cgroup:/sys/fs/cgroup:rw
       - /etc/runtipi/repos/runtipi/apps/rego-tunnel/shared/xstartup:/root/.vnc/xstartup:ro