feat: 完善 Face 一级关系编辑和稳定性

step_editor/transforms.py

@@ -120,9 +120,11 @@ class TransformMixin:
         part = self.part_by_id(part_id)
         if part is None:
             raise ValueError(f"未知零件 ID {part_id}")
+        previous_logical_ids = tuple(getattr(self, "face_logical_ids", ()))
         part.shape = _translated_shape_by_vector(part.shape, vector)
         _ensure_valid_shape(part.shape)
         self.refresh_topology()
+        self._restore_face_logical_ids_if_count_matches(previous_logical_ids)
         return (
             f"零件已平移: 零件 {part_id}, vector={_format_tuple(vector)}, "
             f"distance={float(plan['translation_distance']):g}, risk={plan['risk']}."
@@ -137,6 +139,7 @@ class TransformMixin:
         if part is None:
             raise ValueError(f"Unknown part id {part_id}")
 
+        previous_logical_ids = tuple(getattr(self, "face_logical_ids", ()))
         part_solids = _explore(part.shape, TopAbs_SOLID)
         if len(part_solids) <= 1:
             part.shape = _translated_shape_by_vector(part.shape, vector)
@@ -156,6 +159,7 @@ class TransformMixin:
 
         _ensure_valid_shape(part.shape)
         self.refresh_topology()
+        self._restore_face_logical_ids_if_count_matches(previous_logical_ids)
         return (
             f"Solid translated: solid {solid_id}, part {part_id}, vector={_format_tuple(vector)}, "
             f"distance={float(plan['translation_distance']):g}, risk={plan['risk']}."