Design file format 2 with a migration chain (doc::format: older formats upgraded step by step, newer refused with a message, out-of-range numbers and broken occurrence placements refused); a corpus of designs saved by the M0, components-era, joints-era and current builds that must open and evaluate as saved (two pre-versioning behaviour changes listed with their reasons); damaged and hostile variants of every corpus file never panic

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL
2026-10-08 11:37:33 +00:00
1 parent f50d743c55
commit f413a86d3d
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+{
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+      "bbox": {
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+          15.0,
+          5.0
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+        "min": [
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+          0.0,
+          0.0
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+      "center_of_mass": [
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+        8.063488509334698,
+        2.500000003353729
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+        "plane": 4
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+      "faces": 6,
+      "kernel": {
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+        "faces": 14,
+        "shells": 1,
+        "vertices": 16
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+      "name": "Body1",
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+      "volume_mm3": 981.8090960455798
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+      "bbox": {
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+        "min": [
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+          0.0,
+          -2.3775115272352145e-15
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+      "center_of_mass": [
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+        4.973160725428021
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+      "face_types": {
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+      "faces": 8,
+      "kernel": {
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+        "faces": 9,
+        "shells": 1,
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+      "name": "Body2",
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+      "volume_mm3": 869.3724925404262
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+  "body_count": 2,
+  "params": [],
+  "sketches": [
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+      "dof": 8,
+      "id": 1,
+      "name": "Sketch1",
+      "profiles": 1,
+      "status": "solved"
+    }
+  ],
+  "timeline": [
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+      "name": "Sketch1",
+      "rolled_back": false,
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+      "type": "Sketch",
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+      "name": "Revolve1",
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+      "type": "RevolveFeature",
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+      "id": 3,
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+      "name": "Box1",
+      "rolled_back": false,
+      "suppressed": false,
+      "type": "BoxFeature",
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+    {
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+      "id": 4,
+      "ms": 1.6926910000000002,
+      "name": "Cylinder1",
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+      "suppressed": false,
+      "type": "CylinderFeature",
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+    {
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+      "id": 5,
+      "ms": 384.534019,
+      "name": "Combine1",
+      "rolled_back": false,
+      "suppressed": false,
+      "type": "CombineFeature",
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+      "id": 6,
+      "ms": 150.763588,
+      "name": "Chamfer1",
+      "rolled_back": false,
+      "suppressed": false,
+      "type": "ChamferFeature",
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+    "volume_mm3": 1851.181588586006
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+}