feat: classify pad ordered pair row

scripts/freecad-ordered-operation-pair-resave.py

@@ -53,11 +53,12 @@ def phase_snapshot(document):
 
 
 def document_snapshot(document):
+    datum_types = {"App::Line", "App::Plane", "App::Point"}
     return {
         "objects": [{
             "name": obj.Name,
             "typeId": obj.TypeId,
-            **({"shape": shape_snapshot(obj)} if hasattr(obj, "Shape") and not obj.Shape.isNull() else {}),
+            **({"shape": shape_snapshot(obj)} if obj.TypeId not in datum_types and hasattr(obj, "Shape") and not obj.Shape.isNull() else {}),
         } for obj in document.Objects],
     }
 
@@ -144,13 +145,11 @@ def collect_rejected():
         Import.insert(step_path, document.Name)
         document.recompute()
         source_objects = [obj for obj in document.Objects if hasattr(obj, "Shape") and not obj.Shape.isNull()]
-        if len(source_objects) != 1:
-            raise RuntimeError("Fuse STEP import must produce exactly one Shape object")
-        source = source_objects[0]
-        if len(source.Shape.Solids) != 1:
-            raise RuntimeError("Fuse STEP import did not produce one Solid")
-        if source.Shape.isNull():
-            raise RuntimeError("STEP import produced no Shape")
+        solid_sources = [obj for obj in source_objects if obj.TypeId == "Part::Feature" and obj.Shape.isValid() and len(obj.Shape.Solids) == 1]
+        if len(solid_sources) != 1:
+            candidates = [{"name": obj.Name, "typeId": obj.TypeId, "shape": shape_snapshot_from_shape(obj.Shape)} for obj in solid_sources]
+            raise RuntimeError("Rejected-pair STEP import must produce exactly one valid single-Solid source: " + json.dumps(candidates, sort_keys=True))
+        source = solid_sources[0]
         source_name = source.Name
         source_type_id = source.TypeId
         document.UndoMode = 1