Add grafana.thehellings.lan (LAN) and grafana.home (Tailscale)
pointing at hosea's respective addresses, matching the pattern
used for jellyfin and other hosea-hosted services.
Add grafana.home and grafana.thehellings.lan nginx proxy entries
pointing at localhost:3001. This allows LAN clients (and Klaatu)
to reach Grafana without Tailscale or direct port access, working
around the enforce_domain restriction on hosea.shire-zebra.ts.net.