{
  "schema": "qsd.coordination",
  "version": 1,
  "snapshot": {
    "project": {
      "id": "fictional-coordination",
      "name": "FICTIONAL EXAMPLE ? service platform",
      "reference": "TRAINING-ONLY"
    },
    "loadedAt": "2026-10-12T12:00:00.000Z",
    "takeoffs": [
      {
        "id": "takeoff-rev-a",
        "title": "Fictional takeoff A",
        "rows": [
          {
            "mark": "B1",
            "shape": "W12X26",
            "length": 20,
            "unit": "ft",
            "quantity": 2
          },
          {
            "mark": "B3",
            "shape": "L4X4X1/4",
            "length": 5,
            "unit": "ft",
            "quantity": 2
          }
        ]
      },
      {
        "id": "takeoff-rev-b",
        "title": "Fictional takeoff B",
        "rows": [
          {
            "mark": "B1",
            "shape": "W12X26",
            "length": 22,
            "unit": "ft",
            "quantity": 3
          },
          {
            "mark": "B2",
            "shape": "W8X10",
            "length": 3,
            "unit": "m",
            "quantity": 2
          }
        ]
      }
    ],
    "entities": [
      {
        "id": "drawing-s101",
        "kind": "drawing",
        "label": "S101 / revision B",
        "mark": "",
        "shape": "",
        "drawingRef": "S101",
        "quantity": null,
        "unit": "",
        "detail": "Platform framing / current"
      },
      {
        "id": "rfi-001",
        "kind": "rfi",
        "label": "RFI-001 / Beam end revision",
        "mark": "",
        "shape": "",
        "drawingRef": "S101",
        "quantity": null,
        "unit": "",
        "detail": "Status: open; confirm beam end dimensions."
      },
      {
        "id": "rfi-002",
        "kind": "rfi",
        "label": "RFI-002 / Missing reference",
        "mark": "",
        "shape": "",
        "drawingRef": "S999",
        "quantity": null,
        "unit": "",
        "detail": "Status: open; drawing not in the loaded register."
      },
      {
        "id": "purchase-001",
        "kind": "purchase",
        "label": "PO-001 / W12X26",
        "mark": "",
        "shape": "W12X26",
        "drawingRef": "",
        "quantity": 2,
        "unit": "pieces",
        "detail": "2 ordered; 1 received; 6096 mm; A992"
      },
      {
        "id": "assembly-001",
        "kind": "assembly",
        "label": "A1 / platform frame",
        "mark": "A1",
        "shape": "",
        "drawingRef": "",
        "quantity": 1,
        "unit": "assemblies",
        "detail": "2 beams; 4 clips. Associate individual piece marks explicitly."
      },
      {
        "id": "fabrication-001",
        "kind": "fabrication",
        "label": "B1 / shop batch",
        "mark": "B1",
        "shape": "",
        "drawingRef": "",
        "quantity": 2,
        "unit": "pieces",
        "detail": "Cut: 2; fabricated: 1; coated: 0; ready: 0."
      }
    ],
    "warnings": [
      "This is a fictional teaching example, not a real project, engineering approval, or supplier quotation."
    ]
  },
  "links": [
    {
      "mark": "B1",
      "entityId": "drawing-s101",
      "note": "Fictional detail 2 shows B1."
    },
    {
      "mark": "B1",
      "entityId": "purchase-001",
      "note": "Fictional purchasing allocation reviewed for B1."
    },
    {
      "mark": "B1",
      "entityId": "assembly-001",
      "note": "Fictional assembly membership explicitly recorded."
    }
  ],
  "annotations": [
    {
      "signature": "[\"takeoff-rev-a\",\"takeoff-rev-b\",\"B1\",[{\"shape\":\"W12X26\",\"lengthMm\":6096,\"quantity\":2}],[{\"shape\":\"W12X26\",\"lengthMm\":6705.6,\"quantity\":3}]]",
      "status": "review",
      "cost": 875,
      "currency": "USD",
      "days": 2,
      "note": "Illustrative rework allowance entered by the reviewer; approval and supplier confirmation remain outstanding."
    }
  ],
  "before": "takeoff-rev-a",
  "after": "takeoff-rev-b"
}