feat: establish reproducible FreeCAD web compatibility baseline

fixtures/freecad-golden/scenarios/part-fuse-005.json

@@ -0,0 +1,62 @@
+{
+  "schemaVersion": 1,
+  "id": "part-fuse-005",
+  "category": "Part",
+  "description": "fuse Boolean fixture 5",
+  "operation": {
+    "type": "fuse",
+    "base": {
+      "type": "box",
+      "length": 8,
+      "width": 7,
+      "height": 9,
+      "placement": {
+        "translation": [
+          0,
+          0,
+          1
+        ]
+      }
+    },
+    "tool": {
+      "type": "box",
+      "length": 5,
+      "width": 6,
+      "height": 7,
+      "placement": {
+        "translation": [
+          2,
+          2,
+          1
+        ]
+      }
+    }
+  },
+  "tolerance": {
+    "linear": 0.000001,
+    "scalar": 0.000001
+  },
+  "expected": {
+    "shapeType": "Compound",
+    "isNull": false,
+    "isValid": true,
+    "solids": 1,
+    "faces": 12,
+    "edges": 28,
+    "vertices": 18,
+    "volume": 538.9999999999999,
+    "area": 406,
+    "boundingBox": {
+      "max": [
+        8,
+        8,
+        10
+      ],
+      "min": [
+        0,
+        0,
+        1
+      ]
+    }
+  }
+}