First test kinda working

monitoring/docker-compose.yml

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+# VictoriaMetrics + Grafana for `quic_ecs_dt` local demos.
+#
+# Run from the repo root (or via `make monitoring-up`). The substrate runs on
+# the host and exposes /metrics on :9100; VM scrapes it via
+# `host.docker.internal`, which works on Docker Desktop (mac/Windows) and on
+# recent Docker Engine on Linux thanks to the `extra_hosts` mapping below.
+#
+# Grafana auto-provisions:
+#   • a Prometheus-typed data source pointing at VM
+#   • both dashboards from ../dashboards (runtime + sensors)
+#
+# Endpoints:
+#   • Grafana            http://localhost:3000  (anonymous Admin)
+#   • VictoriaMetrics    http://localhost:8428
+#   • Substrate /metrics http://localhost:9100/metrics  (on the host)
+
+services:
+  victoria-metrics:
+    image: victoriametrics/victoria-metrics:v1.115.0
+    container_name: quic_ecs_dt_vm
+    ports:
+      - "8428:8428"
+    command:
+      - "-promscrape.config=/etc/vm/scrape.yml"
+      - "-retentionPeriod=1d"
+      - "-storageDataPath=/storage"
+    volumes:
+      - ./victoria-metrics/scrape.yml:/etc/vm/scrape.yml:ro
+      - vm-data:/storage
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    restart: unless-stopped
+
+  grafana:
+    image: grafana/grafana:11.4.0
+    container_name: quic_ecs_dt_grafana
+    ports:
+      - "3000:3000"
+    environment:
+      - GF_AUTH_ANONYMOUS_ENABLED=true
+      - GF_AUTH_ANONYMOUS_ORG_ROLE=Admin
+      - GF_AUTH_DISABLE_LOGIN_FORM=false
+      - GF_SECURITY_ADMIN_USER=admin
+      - GF_SECURITY_ADMIN_PASSWORD=admin
+      - GF_USERS_DEFAULT_THEME=dark
+    volumes:
+      - ./grafana/provisioning:/etc/grafana/provisioning:ro
+      - ../dashboards:/var/lib/grafana/dashboards:ro
+      - grafana-data:/var/lib/grafana
+    depends_on:
+      - victoria-metrics
+    restart: unless-stopped
+
+volumes:
+  vm-data:
+  grafana-data:

monitoring/grafana/provisioning/dashboards/provider.yml

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+apiVersion: 1
+
+providers:
+  - name: quic_ecs_dt
+    orgId: 1
+    folder: "quic_ecs_dt"
+    type: file
+    disableDeletion: false
+    updateIntervalSeconds: 10
+    allowUiUpdates: true
+    options:
+      path: /var/lib/grafana/dashboards
+      foldersFromFilesStructure: false

monitoring/grafana/provisioning/datasources/datasource.yml

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+apiVersion: 1
+
+datasources:
+  - name: Prometheus
+    type: prometheus
+    uid: prometheus
+    access: proxy
+    url: http://victoria-metrics:8428
+    isDefault: true
+    editable: true
+    jsonData:
+      timeInterval: "1s"
+      httpMethod: "POST"

monitoring/victoria-metrics/scrape.yml

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+# VictoriaMetrics scrape config — uses Prometheus-compatible syntax.
+# 1-second interval gives Grafana something to redraw every refresh tick.
+
+global:
+  scrape_interval: 1s
+  scrape_timeout: 800ms
+
+scrape_configs:
+  - job_name: substrate
+    static_configs:
+      - targets:
+          - "host.docker.internal:9100"
+        labels:
+          instance: "substrate-local"