- Remove monitoring services from all docker compose files — monitoring is now
user-managed infrastructure (users point their own Prometheus at /metrics)
- Remove metrics profile, prometheus/alertmanager volumes from Makefile
- Update README Getting Started: packet capture is included via --profile receiver,
not a separate prerequisite; add remote observers guide
- Add --profile all to all docker compose command examples in README and UPGRADING.md
- Simplify UPGRADING.md backup/migration to only meshcore_hub_data