chore(grafana): add proofs-history observability

etc/README.md

@@ -14,10 +14,13 @@ up to date.
 
 The [`docker-compose.yml`](./docker-compose.yml) in this directory brings up a
 local morph-reth node together with Prometheus and Grafana. The `morph-reth`
-service runs with `--chain morph` and exposes metrics on port `9001`,
+service runs against Morph mainnet with `--chain mainnet` and exposes metrics on port `9001`,
 which Prometheus scrapes with the labels defined in
 [`prometheus/prometheus.yml`](./prometheus/prometheus.yml).
 
+To monitor Hoodi instead, change the service argument to `--chain hoodi` and
+set the Prometheus `chain` label to `hoodi`.
+
 ```bash
 ./etc/generate-jwt.sh
 docker compose -f etc/docker-compose.yml up -d
@@ -27,6 +30,11 @@ Grafana is available at <http://localhost:3000> (default admin/admin) and
 will auto-provision the unified Morph dashboard from
 [`grafana/dashboards/`](./grafana/dashboards/).
 
+The dashboard's **Proof History** and **Execution Extension Runtime** rows
+require the node to run with `--proofs-history`. The example Compose stack does
+not enable proof history by default, so those panels are expected to be empty
+unless the flag is added to the `morph-reth` service command.
+
 ### Grafana
 
 #### Adding a new metric to Grafana

etc/docker-compose.yml

@@ -19,7 +19,7 @@ services:
     pid: host
     command: >
       node
-      --chain morph
+      --chain mainnet
       --datadir /var/lib/morph-reth/data
       --metrics 0.0.0.0:9001
       --log.file.directory /var/lib/morph-reth/logs