feat(cadfs): expand selector provenance coverage

backend/engine/cdsl_engine/topology_export.py

@@ -13,6 +13,11 @@ from __future__ import annotations
 import math
 from typing import Any
 
+from OCP.BRep import BRep_Tool
+from OCP.TopAbs import TopAbs_EDGE, TopAbs_VERTEX
+from OCP.TopExp import TopExp_Explorer
+from OCP.TopoDS import TopoDS
+
 from .specs import canonical_plane_signature
 from .topology import TopologyRecord
 
@@ -48,6 +53,40 @@ def topology_records(body: Any, feature_id: str, body_id: str) -> list[TopologyR
     edges = list(body.edges())
     vertices = list(body.vertices())
 
+    # build123d may wrap a vertex extracted from a solid in a distinct OCC
+    # handle. Builder FirstShape/LastShape vertex history is only comparable
+    # with the final result's native explorer handles, so retain those exact
+    # handles for selector records. Faces and edges keep their established
+    # build123d export path.
+    result_vertices: list[Any] = []
+    explorer = TopExp_Explorer(body.wrapped, TopAbs_VERTEX)
+    while explorer.More():
+        candidate = explorer.Current()
+        if not any(candidate.IsSame(existing) for existing in result_vertices):
+            result_vertices.append(candidate)
+        explorer.Next()
+    result_edges: list[Any] = []
+    explorer = TopExp_Explorer(body.wrapped, TopAbs_EDGE)
+    while explorer.More():
+        candidate = explorer.Current()
+        if not any(candidate.IsSame(existing) for existing in result_edges):
+            result_edges.append(candidate)
+        explorer.Next()
+
+    def exact_incident_edge_count(vertex: Any) -> int:
+        count = 0
+        for edge in result_edges:
+            edge_vertices: list[Any] = []
+            edge_explorer = TopExp_Explorer(edge, TopAbs_VERTEX)
+            while edge_explorer.More():
+                candidate = edge_explorer.Current()
+                if not any(candidate.IsSame(existing) for existing in edge_vertices):
+                    edge_vertices.append(candidate)
+                edge_explorer.Next()
+            if any(vertex.IsSame(candidate) for candidate in edge_vertices):
+                count += 1
+        return count
+
     def index_for(shape: Any, candidates: list[Any]) -> int | None:
         """Map a subshape returned by a face/edge back to body topology."""
         # 用 is_same 把面/边的子形状映射回主体拓扑列表的下标。
@@ -302,10 +341,11 @@ def topology_records(body: Any, feature_id: str, body_id: str) -> list[TopologyR
             geometry=geometry,
         ))
     # 5. 导出顶点记录：含坐标与关联边数。
-    for index, vertex in enumerate(vertices):
-        point = [vertex.X, vertex.Y, vertex.Z]
+    for index, vertex in enumerate(result_vertices):
+        point_value = BRep_Tool.Pnt_s(TopoDS.Vertex_s(vertex))
+        point = [point_value.X(), point_value.Y(), point_value.Z()]
         records.append(TopologyRecord(
             record_id=f"{body_id}:vertex:{index}", kind="vertex", feature_id=feature_id, body_id=body_id, value=vertex,
-            geometry={"center_mm": point, "incident_edge_count": len(vertex_edges[index])},
+            geometry={"center_mm": point, "incident_edge_count": exact_incident_edge_count(vertex)},
         ))
     return records