{
  "changeId": "wide-note-request",
  "source": "data/seed/change-request.json",
  "classification": "SYNTHETIC change-impact exercise; not approved or physically implemented",
  "decision": "HOLD",
  "reason": "196 + 2*2 = 200 mm exceeds the 192 mm pack interior by 8 mm.",
  "baseline": {
    "schema": "stackline-digital-review/1",
    "units": "mm",
    "classification": "SYNTHETIC / digital checks",
    "params": {
      "width": 180,
      "depth": 100,
      "height": 32,
      "wall": 3,
      "floor": 3,
      "clearance": 1.5,
      "insertHeight": 20,
      "rib": 2,
      "bays": 3,
      "layout": "even"
    },
    "innerMM": [
      174,
      94,
      29
    ],
    "insertMM": [
      171,
      91,
      20
    ],
    "offsetMM": [
      4.5,
      4.5,
      3
    ],
    "nominalPerSideGapMM": 1.5,
    "rimRecessMM": 9,
    "bays": [
      {
        "id": 1,
        "x": 0,
        "y": 2,
        "width": 55.666666666666664,
        "depth": 87,
        "height": 20
      },
      {
        "id": 2,
        "x": 57.666666666666664,
        "y": 2,
        "width": 55.666666666666664,
        "depth": 87,
        "height": 20
      },
      {
        "id": 3,
        "x": 115.33333333333333,
        "y": 2,
        "width": 55.666666666666664,
        "depth": 87,
        "height": 20
      }
    ],
    "trayVolumeMM3": 101676,
    "insertVolumeMM3": 20640,
    "totalVolumeMM3": 122316,
    "meshes": {
      "tray": {
        "triangles": 92,
        "vertices": 48,
        "edges": 138,
        "unpairedEdges": 0,
        "orientationErrors": 0,
        "degenerate": 0,
        "closedOrientedEdges": true,
        "signedVolumeMM3": 101676,
        "boundsMM": {
          "min": [
            0,
            0,
            0
          ],
          "max": [
            180,
            100,
            32
          ],
          "size": [
            180,
            100,
            32
          ]
        },
        "eulerCharacteristic": 2
      },
      "insert": {
        "triangles": 96,
        "vertices": 48,
        "edges": 144,
        "unpairedEdges": 0,
        "orientationErrors": 0,
        "degenerate": 0,
        "closedOrientedEdges": true,
        "signedVolumeMM3": 20640.000000000004,
        "boundsMM": {
          "min": [
            0,
            0,
            0
          ],
          "max": [
            171,
            91,
            20
          ],
          "size": [
            171,
            91,
            20
          ]
        },
        "eulerCharacteristic": 0
      }
    },
    "modeledBenchEffort": {
      "classification": "MODELED assembly + handling + inspection; not time-study evidence",
      "operations": [
        {
          "step": "Identify matching revision and pair",
          "seconds": 45
        },
        {
          "step": "Record proposed dimensional checks",
          "seconds": 90
        },
        {
          "step": "Review edges and condition",
          "seconds": 45
        },
        {
          "step": "Place insert without forcing",
          "seconds": 40
        },
        {
          "step": "Lift insert out",
          "seconds": 30
        },
        {
          "step": "Review seating and desk stability",
          "seconds": 50
        },
        {
          "step": "Check 3 bay openings",
          "seconds": 60
        }
      ],
      "seconds": 360,
      "minutes": 6,
      "fabricationTimeIncluded": false
    },
    "economics": {
      "classification": "SYNTHETIC estimate only",
      "solidMassG": 151.67184,
      "grossFeedstockG": 164.86069565217392,
      "materialUSD": 3.9566566956521743,
      "benchUSD": 2.2,
      "packagingUSD": 0.35,
      "overheadUSD": 1.1,
      "unitUSD": 7.606656695652173,
      "displayedUnitUSD": "7.61",
      "quantity": 20,
      "batchUSD": 152.13313391304348,
      "displayedBatchUSD": "152.13"
    },
    "pack": {
      "classification": "SYNTHETIC nominal envelope only; fixed orientation, no diagonal packing",
      "packedMM": [
        184,
        104,
        36
      ],
      "marginsMM": [
        8,
        8,
        6
      ],
      "packedMassG": 176.67184,
      "massMarginG": 73.32816,
      "pass": true
    },
    "payload": {
      "applicable": false,
      "cardFit": false,
      "tokenFit": true,
      "pass": false,
      "assumptions": {
        "cardWidth": 88,
        "cardDepth": 63,
        "cardStackHeight": 12,
        "tokenDiameter": 20,
        "edgeAllowance": 1
      },
      "note": "Nominal rectangle/circle containment only. Actual Pocket Arcade items, retrieval, and token retention are untested."
    },
    "sensitivity": [
      {
        "label": "Low",
        "densityGCM3": 1.18,
        "feedstockUSDPerKG": 18,
        "scrapFraction": 0.04,
        "classification": "SYNTHETIC estimate only",
        "solidMassG": 144.33288,
        "grossFeedstockG": 150.34675,
        "materialUSD": 2.7062414999999995,
        "benchUSD": 2.2,
        "packagingUSD": 0.35,
        "overheadUSD": 1.1,
        "unitUSD": 6.356241499999999,
        "displayedUnitUSD": "6.36",
        "quantity": 20,
        "batchUSD": 127.12482999999999,
        "displayedBatchUSD": "127.12"
      },
      {
        "label": "Base",
        "densityGCM3": 1.24,
        "feedstockUSDPerKG": 24,
        "scrapFraction": 0.08,
        "classification": "SYNTHETIC estimate only",
        "solidMassG": 151.67184,
        "grossFeedstockG": 164.86069565217392,
        "materialUSD": 3.9566566956521743,
        "benchUSD": 2.2,
        "packagingUSD": 0.35,
        "overheadUSD": 1.1,
        "unitUSD": 7.606656695652173,
        "displayedUnitUSD": "7.61",
        "quantity": 20,
        "batchUSD": 152.13313391304348,
        "displayedBatchUSD": "152.13"
      },
      {
        "label": "High",
        "densityGCM3": 1.3,
        "feedstockUSDPerKG": 32,
        "scrapFraction": 0.15,
        "classification": "SYNTHETIC estimate only",
        "solidMassG": 159.01080000000002,
        "grossFeedstockG": 187.07152941176474,
        "materialUSD": 5.986288941176472,
        "benchUSD": 2.2,
        "packagingUSD": 0.35,
        "overheadUSD": 1.1,
        "unitUSD": 9.63628894117647,
        "displayedUnitUSD": "9.64",
        "quantity": 20,
        "batchUSD": 192.72577882352942,
        "displayedBatchUSD": "192.73"
      }
    ],
    "physicalTestsPerformed": [],
    "limitations": [
      "No material has been selected, purchased, printed, fabricated, handled, inspected, or shipped.",
      "STL files contain nominal millimetre coordinates but STL itself has no unit metadata. Import explicitly as mm.",
      "Solid-volume mass is not a slicer estimate: no infill, supports, shrinkage, machine time, or process settings are modeled.",
      "Clearance is a loose, centered design assumption, not a validated tolerance or friction fit. The insert is not retained.",
      "The open-ended ladder and 1.5 mm nominal surrounding gap do not seal small tokens into bays.",
      "Dimensions, strength, material suitability, surface finish, stability, handling time, and transit behavior require future physical review.",
      "Lightweight dry desk items only; no food, heated items, electrical, medical, child-safety, or load-bearing uses.",
      "Packaging and costs are synthetic scenarios. Digital passes grant no fabrication, spending, shipment, or native Hive authority."
    ]
  },
  "proposal": {
    "schema": "stackline-digital-review/1",
    "units": "mm",
    "classification": "SYNTHETIC / digital checks",
    "params": {
      "width": 196,
      "depth": 100,
      "height": 32,
      "wall": 3,
      "floor": 3,
      "clearance": 1.5,
      "insertHeight": 20,
      "rib": 2,
      "bays": 3,
      "layout": "even"
    },
    "innerMM": [
      190,
      94,
      29
    ],
    "insertMM": [
      187,
      91,
      20
    ],
    "offsetMM": [
      4.5,
      4.5,
      3
    ],
    "nominalPerSideGapMM": 1.5,
    "rimRecessMM": 9,
    "bays": [
      {
        "id": 1,
        "x": 0,
        "y": 2,
        "width": 61,
        "depth": 87,
        "height": 20
      },
      {
        "id": 2,
        "x": 63,
        "y": 2,
        "width": 61,
        "depth": 87,
        "height": 20
      },
      {
        "id": 3,
        "x": 126,
        "y": 2,
        "width": 61,
        "depth": 87,
        "height": 20
      }
    ],
    "trayVolumeMM3": 109260,
    "insertVolumeMM3": 21920,
    "totalVolumeMM3": 131180,
    "meshes": {
      "tray": {
        "triangles": 92,
        "vertices": 48,
        "edges": 138,
        "unpairedEdges": 0,
        "orientationErrors": 0,
        "degenerate": 0,
        "closedOrientedEdges": true,
        "signedVolumeMM3": 109260,
        "boundsMM": {
          "min": [
            0,
            0,
            0
          ],
          "max": [
            196,
            100,
            32
          ],
          "size": [
            196,
            100,
            32
          ]
        },
        "eulerCharacteristic": 2
      },
      "insert": {
        "triangles": 96,
        "vertices": 48,
        "edges": 144,
        "unpairedEdges": 0,
        "orientationErrors": 0,
        "degenerate": 0,
        "closedOrientedEdges": true,
        "signedVolumeMM3": 21919.99999999999,
        "boundsMM": {
          "min": [
            0,
            0,
            0
          ],
          "max": [
            187,
            91,
            20
          ],
          "size": [
            187,
            91,
            20
          ]
        },
        "eulerCharacteristic": 0
      }
    },
    "modeledBenchEffort": {
      "classification": "MODELED assembly + handling + inspection; not time-study evidence",
      "operations": [
        {
          "step": "Identify matching revision and pair",
          "seconds": 45
        },
        {
          "step": "Record proposed dimensional checks",
          "seconds": 90
        },
        {
          "step": "Review edges and condition",
          "seconds": 45
        },
        {
          "step": "Place insert without forcing",
          "seconds": 40
        },
        {
          "step": "Lift insert out",
          "seconds": 30
        },
        {
          "step": "Review seating and desk stability",
          "seconds": 50
        },
        {
          "step": "Check 3 bay openings",
          "seconds": 60
        }
      ],
      "seconds": 360,
      "minutes": 6,
      "fabricationTimeIncluded": false
    },
    "economics": {
      "classification": "SYNTHETIC estimate only",
      "solidMassG": 162.66320000000002,
      "grossFeedstockG": 176.80782608695654,
      "materialUSD": 4.243387826086956,
      "benchUSD": 2.2,
      "packagingUSD": 0.35,
      "overheadUSD": 1.1,
      "unitUSD": 7.893387826086956,
      "displayedUnitUSD": "7.89",
      "quantity": 20,
      "batchUSD": 157.86775652173912,
      "displayedBatchUSD": "157.87"
    },
    "pack": {
      "classification": "SYNTHETIC nominal envelope only; fixed orientation, no diagonal packing",
      "packedMM": [
        200,
        104,
        36
      ],
      "marginsMM": [
        -8,
        8,
        6
      ],
      "packedMassG": 187.66320000000002,
      "massMarginG": 62.33679999999998,
      "pass": false
    },
    "payload": {
      "applicable": false,
      "cardFit": false,
      "tokenFit": true,
      "pass": false,
      "assumptions": {
        "cardWidth": 88,
        "cardDepth": 63,
        "cardStackHeight": 12,
        "tokenDiameter": 20,
        "edgeAllowance": 1
      },
      "note": "Nominal rectangle/circle containment only. Actual Pocket Arcade items, retrieval, and token retention are untested."
    },
    "sensitivity": [
      {
        "label": "Low",
        "densityGCM3": 1.18,
        "feedstockUSDPerKG": 18,
        "scrapFraction": 0.04,
        "classification": "SYNTHETIC estimate only",
        "solidMassG": 154.7924,
        "grossFeedstockG": 161.2420833333333,
        "materialUSD": 2.9023574999999995,
        "benchUSD": 2.2,
        "packagingUSD": 0.35,
        "overheadUSD": 1.1,
        "unitUSD": 6.552357499999999,
        "displayedUnitUSD": "6.55",
        "quantity": 20,
        "batchUSD": 131.04715,
        "displayedBatchUSD": "131.05"
      },
      {
        "label": "Base",
        "densityGCM3": 1.24,
        "feedstockUSDPerKG": 24,
        "scrapFraction": 0.08,
        "classification": "SYNTHETIC estimate only",
        "solidMassG": 162.66320000000002,
        "grossFeedstockG": 176.80782608695654,
        "materialUSD": 4.243387826086956,
        "benchUSD": 2.2,
        "packagingUSD": 0.35,
        "overheadUSD": 1.1,
        "unitUSD": 7.893387826086956,
        "displayedUnitUSD": "7.89",
        "quantity": 20,
        "batchUSD": 157.86775652173912,
        "displayedBatchUSD": "157.87"
      },
      {
        "label": "High",
        "densityGCM3": 1.3,
        "feedstockUSDPerKG": 32,
        "scrapFraction": 0.15,
        "classification": "SYNTHETIC estimate only",
        "solidMassG": 170.53400000000002,
        "grossFeedstockG": 200.62823529411767,
        "materialUSD": 6.420103529411765,
        "benchUSD": 2.2,
        "packagingUSD": 0.35,
        "overheadUSD": 1.1,
        "unitUSD": 10.070103529411764,
        "displayedUnitUSD": "10.07",
        "quantity": 20,
        "batchUSD": 201.4020705882353,
        "displayedBatchUSD": "201.40"
      }
    ],
    "physicalTestsPerformed": [],
    "limitations": [
      "No material has been selected, purchased, printed, fabricated, handled, inspected, or shipped.",
      "STL files contain nominal millimetre coordinates but STL itself has no unit metadata. Import explicitly as mm.",
      "Solid-volume mass is not a slicer estimate: no infill, supports, shrinkage, machine time, or process settings are modeled.",
      "Clearance is a loose, centered design assumption, not a validated tolerance or friction fit. The insert is not retained.",
      "The open-ended ladder and 1.5 mm nominal surrounding gap do not seal small tokens into bays.",
      "Dimensions, strength, material suitability, surface finish, stability, handling time, and transit behavior require future physical review.",
      "Lightweight dry desk items only; no food, heated items, electrical, medical, child-safety, or load-bearing uses.",
      "Packaging and costs are synthetic scenarios. Digital passes grant no fabrication, spending, shipment, or native Hive authority."
    ]
  },
  "delta": {
    "trayVolumeMM3": 7584,
    "insertVolumeMM3": 1280,
    "solidMassG": 10.991360000000014,
    "syntheticUnroundedUnitUSD": 0.2867311304347826
  },
  "reopenSeedTasks": [
    "freeze-desk-use",
    "verify-parametric-fit",
    "bound-material-assumptions",
    "plan-dry-assembly",
    "define-inspection-gates",
    "replay-inspection-samples",
    "check-pack-envelope",
    "calculate-pilot-economics",
    "trace-width-change",
    "decide-pilot-hold"
  ],
  "inspection": "New proposed width range 195.5–196.5 mm, not validated. Baseline synthetic readings do not apply.",
  "recommendation": "Retain baseline-only digital investigation; revise design or pack and review again before any separately authorized physical work.",
  "physicalChecksPerformed": []
}