{
 "label": "jev-layout-pipeline__run1",
 "task": "T4",
 "format": "express",
 "messages": [
  {
   "version": "v0.9.1",
   "create_surface": {
    "surface_id": "main",
    "catalog_id": "https://a2uicatalog.ai/catalog/c-data-display.json"
   }
  },
  {
   "version": "v0.9.1",
   "update_components": {
    "surface_id": "main",
    "components": [
     {
      "id": "ttl",
      "component": "heading",
      "text": "System Diagnostics"
     },
     {
      "id": "kpis",
      "component": "metric_row",
      "cols": 4,
      "metrics": [
       {
        "value": "99.9%",
        "label": "Uptime",
        "sub": "+0.1% vs last period",
        "trend": "up"
       },
       {
        "value": "24ms",
        "label": "Latency",
        "sub": "-4ms vs last period",
        "trend": "down"
       },
       {
        "value": "1,042",
        "label": "Active Nodes",
        "sub": "+12 vs last period",
        "trend": "up"
       },
       {
        "value": "0.02%",
        "label": "Error Rate",
        "sub": "-0.01% vs last period",
        "trend": "down"
       }
      ]
     },
     {
      "id": "chart",
      "component": "chartjs_bar",
      "labels": [
       "Mon",
       "Tue",
       "Wed",
       "Thu"
      ],
      "datasets": [
       {
        "label": "Active Requests",
        "data": [
         12500,
         14200,
         13800,
         15600
        ]
       }
      ]
     },
     {
      "id": "root",
      "component": "columns",
      "cols": 1,
      "gap": "1.5rem",
      "align": "top",
      "items": [
       {
        "blocks": [
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         "kpis",
         "chart"
        ]
       }
      ]
     }
    ]
   }
  }
 ]
}