{
  "uid": "swarm-platform",
  "title": "Swarm Platform — CPU & scan health",
  "tags": ["swarm", "platform"],
  "timezone": "utc",
  "schemaVersion": 39,
  "version": 1,
  "refresh": "10s",
  "time": { "from": "now-30m", "to": "now" },
  "panels": [
    {
      "id": 1, "type": "timeseries", "title": "Node CPU %",
      "gridPos": { "h": 8, "w": 12, "x": 0, "y": 0 },
      "datasource": { "type": "prometheus", "uid": "swarm-prom" },
      "targets": [{
        "expr": "100 - (avg by (instance) (rate(node_cpu_seconds_total{mode=\"idle\"}[1m])) * 100)",
        "legendFormat": "{{instance}}", "refId": "A"
      }],
      "fieldConfig": { "defaults": { "unit": "percent", "min": 0, "max": 100 }, "overrides": [] }
    },
    {
      "id": 2, "type": "timeseries", "title": "Node memory used %",
      "gridPos": { "h": 8, "w": 12, "x": 12, "y": 0 },
      "datasource": { "type": "prometheus", "uid": "swarm-prom" },
      "targets": [{
        "expr": "(1 - node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) * 100",
        "legendFormat": "used", "refId": "A"
      }],
      "fieldConfig": { "defaults": { "unit": "percent", "min": 0, "max": 100 }, "overrides": [] }
    },
    {
      "id": 3, "type": "timeseries", "title": "Exporter scan duration",
      "gridPos": { "h": 7, "w": 8, "x": 0, "y": 8 },
      "datasource": { "type": "prometheus", "uid": "swarm-prom" },
      "targets": [{
        "expr": "swarm_exporter_scan_duration_seconds",
        "legendFormat": "scan seconds", "refId": "A"
      }],
      "fieldConfig": { "defaults": { "unit": "s" }, "overrides": [] }
    },
    {
      "id": 4, "type": "timeseries", "title": "Explorer query duration",
      "gridPos": { "h": 7, "w": 8, "x": 8, "y": 8 },
      "datasource": { "type": "prometheus", "uid": "swarm-prom" },
      "targets": [{
        "expr": "swarm_explorer_query_duration_seconds",
        "legendFormat": "last query", "refId": "A"
      }],
      "fieldConfig": { "defaults": { "unit": "s" }, "overrides": [] }
    },
    {
      "id": 5, "type": "timeseries", "title": "Explorer tree build duration",
      "gridPos": { "h": 7, "w": 8, "x": 16, "y": 8 },
      "datasource": { "type": "prometheus", "uid": "swarm-prom" },
      "targets": [{
        "expr": "swarm_explorer_tree_duration_seconds",
        "legendFormat": "tree seconds", "refId": "A"
      }],
      "fieldConfig": { "defaults": { "unit": "s" }, "overrides": [] }
    },
    {
      "id": 6, "type": "stat", "title": "Parquet files scanned",
      "gridPos": { "h": 5, "w": 6, "x": 0, "y": 15 },
      "datasource": { "type": "prometheus", "uid": "swarm-prom" },
      "targets": [{ "expr": "swarm_parquet_files", "instant": true, "refId": "A" }],
      "options": { "reduceOptions": { "calcs": ["lastNotNull"] } }
    },
    {
      "id": 7, "type": "stat", "title": "Flight window",
      "gridPos": { "h": 5, "w": 6, "x": 6, "y": 15 },
      "datasource": { "type": "prometheus", "uid": "swarm-prom" },
      "targets": [{ "expr": "swarm_metric_flight_window", "instant": true, "refId": "A" }],
      "options": { "reduceOptions": { "calcs": ["lastNotNull"] } }
    },
    {
      "id": 8, "type": "stat", "title": "Telemetry rows (window)",
      "gridPos": { "h": 5, "w": 6, "x": 12, "y": 15 },
      "datasource": { "type": "prometheus", "uid": "swarm-prom" },
      "targets": [{ "expr": "sum(swarm_rows_total)", "instant": true, "refId": "A" }],
      "options": { "reduceOptions": { "calcs": ["lastNotNull"] } }
    },
    {
      "id": 9, "type": "stat", "title": "Min fleet battery %",
      "gridPos": { "h": 5, "w": 6, "x": 18, "y": 15 },
      "datasource": { "type": "prometheus", "uid": "swarm-prom" },
      "targets": [{ "expr": "min(swarm_battery_pct)", "instant": true, "refId": "A" }],
      "fieldConfig": { "defaults": { "unit": "percent", "min": 0, "max": 100 }, "overrides": [] }
    }
  ]
}