feat: establish reproducible FreeCAD web compatibility baseline

config/chrome-spreadsheet-verification.json

@@ -0,0 +1,87 @@
+{
+  "schemaVersion": 1,
+  "status": "pass",
+  "browserId": "chrome",
+  "crossOriginIsolated": true,
+  "cells": {
+    "width": 6,
+    "length": 12,
+    "updatedLength": 16,
+    "dimension": "length"
+  },
+  "aliases": [
+    "Length",
+    "Width"
+  ],
+  "dependencies": [
+    "A2->A1:Width",
+    "B1->A1:A1"
+  ],
+  "cycle": {
+    "detected": true,
+    "cells": [
+      "C1",
+      "D1"
+    ]
+  },
+  "binding": {
+    "alias": "Length",
+    "objectId": "pad",
+    "propertyName": "Length",
+    "appliedValue": 16,
+    "undoValue": 12,
+    "redoValue": 16
+  },
+  "expression": {
+    "value": 13,
+    "dimension": "length",
+    "references": [
+      "Spreadsheet.Length"
+    ]
+  },
+  "layout": {
+    "styledCells": 4,
+    "namedRange": "A1:A3",
+    "mergedRange": "A1:C3",
+    "shiftedFormulaAddress": "A3"
+  },
+  "csv": {
+    "rows": 2,
+    "columns": 4,
+    "bytes": 46
+  },
+  "largeSheet": {
+    "cells": 10000,
+    "rows": 100,
+    "columns": 100,
+    "evaluationErrors": 0,
+    "csvBytes": 175112,
+    "durationMs": 53.85000002384186,
+    "budgetMs": 5000
+  },
+  "persistence": {
+    "mode": "sqlite-opfs",
+    "savedVersion": 20,
+    "reopenedVersion": 20,
+    "reopenedValue": 16
+  },
+  "resource": {
+    "hash": "7bd33d02ab448a6cfe803608d27d4d394213ee4cc2998eeaaa31176e4216a161",
+    "byteLength": 939,
+    "roundTrip": true,
+    "released": true
+  },
+  "opfs": {
+    "markerSuite": "SS-ALL",
+    "markerCells": 9,
+    "markerRemoved": true
+  },
+  "afterRelease": {
+    "shapeCount": 0,
+    "kernelReferenceCount": 0
+  },
+  "browser": {
+    "product": "Chrome/150.0.7871.128",
+    "userAgent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/150.0.0.0 Safari/537.36"
+  }
+}