Sovereign telemetry stack: Prometheus + Grafana + exporter

- Docker Compose with 3 containers (prometheus, grafana, exporter)
- Custom Python exporter reads Gitea API, heartbeat JSONL, inference metrics, model health
- Sovereignty score: 7 dimensions, weighted composite (0-100)
- Top 5 common sense metrics: commit velocity, issues/PRs, heartbeat, inference, model health
- Grafana auto-provisioned with 'Timmy Sovereign Command' dashboard
- Grafana on :3033, Prometheus on :9090, Exporter on :9101

Refs: #590, #594

docker-compose.yml

@@ -0,0 +1,57 @@
+# Timmy Telemetry Stack — Sovereign Monitoring
+# Deploy on Hermes (Mac M3 Max) alongside Ollama + Huey
+#
+#   cd ~/.timmy/timmy-telemetry && docker compose up -d
+#
+# Grafana:    http://localhost:3033  (admin / timmy)
+# Prometheus: http://localhost:9090
+# Exporter:   http://localhost:9101/metrics
+
+services:
+  prometheus:
+    image: prom/prometheus:latest
+    container_name: timmy-prometheus
+    restart: unless-stopped
+    ports:
+      - "9090:9090"
+    volumes:
+      - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml:ro
+      - prometheus-data:/prometheus
+    command:
+      - "--config.file=/etc/prometheus/prometheus.yml"
+      - "--storage.tsdb.retention.time=90d"
+      - "--web.enable-lifecycle"
+
+  grafana:
+    image: grafana/grafana:latest
+    container_name: timmy-grafana
+    restart: unless-stopped
+    ports:
+      - "3033:3000"
+    environment:
+      - GF_SECURITY_ADMIN_USER=admin
+      - GF_SECURITY_ADMIN_PASSWORD=timmy
+      - GF_DASHBOARDS_DEFAULT_HOME_DASHBOARD_PATH=/var/lib/grafana/dashboards/sovereignty.json
+    volumes:
+      - ./grafana/provisioning:/etc/grafana/provisioning:ro
+      - ./grafana/dashboards:/var/lib/grafana/dashboards:ro
+      - grafana-data:/var/lib/grafana
+
+  exporter:
+    build: ./exporter
+    container_name: timmy-exporter
+    restart: unless-stopped
+    ports:
+      - "9101:9101"
+    volumes:
+      - ${TIMMY_HOME:-~/.timmy}:/data/timmy:ro
+      - ${HERMES_HOME:-~/.hermes}:/data/hermes:ro
+    environment:
+      - GITEA_URL=http://143.198.27.163:3000
+      - GITEA_TOKEN=${GITEA_TOKEN:-130c3811bf4bae84a724cc165d677573d0f89636}
+      - TIMMY_DATA=/data/timmy
+      - HERMES_DATA=/data/hermes
+
+volumes:
+  prometheus-data:
+  grafana-data: