Initial commit: stats-gateway gRPC service + dashboard + CLI

systemd/stats-snapshot.service

@@ -0,0 +1,19 @@
+[Unit]
+Description=Generate stats snapshot.json for stats-site dashboard
+After=stats-gateway.service
+Wants=stats-gateway.service
+
+[Service]
+Type=oneshot
+User=stats
+Group=www-data
+ExecStart=/usr/local/bin/stats-snapshot --db /var/lib/stats-gateway/stats.db --out /var/www/stats-site/data/snapshot.json
+StandardOutput=journal
+StandardError=journal
+
+# Need write access to /var/www/stats-site/data
+ReadWritePaths=/var/www/stats-site/data
+NoNewPrivileges=true
+ProtectSystem=strict
+ProtectHome=true
+PrivateTmp=true