feat: 增强一级关系识别与保持关系策略

scripts/verify_prismatic_feature.py

@@ -146,6 +146,62 @@ def assert_rectangular_feature_ui(
         raise AssertionError(f"unexpected rectangular feature UI parameters: {actual}")
 
 
+def find_multistep_transition_face(model: StepModel) -> tuple[int, dict[str, object]]:
+    matches: list[tuple[int, dict[str, object]]] = []
+    for face_id in range(len(model.faces)):
+        info = model.feature_info(face_id)
+        if info.get("multistep_prismatic_status") != "blocked":
+            continue
+        center = info.get("area_center")
+        z_value = float(center[2]) if isinstance(center, (list, tuple)) and len(center) >= 3 else -1.0
+        matches.append((face_id, info | {"_z_sort": z_value}))
+    if not matches:
+        raise AssertionError("expected at least one blocked multistep transition face")
+    matches.sort(key=lambda item: float(item[1].get("_z_sort", -1.0)), reverse=True)
+    face_id, info = matches[0]
+    info.pop("_z_sort", None)
+    return face_id, info
+
+
+def assert_multistep_transition_guard(model: StepModel) -> None:
+    face_id, info = find_multistep_transition_face(model)
+    blockers = str(info.get("multistep_prismatic_blockers") or info.get("recognition_blockers") or "")
+    if "多台阶" not in blockers or "暂不支持" not in blockers:
+        raise AssertionError(f"multistep transition blocker should explain unsupported scope: {info}")
+    if "复杂多台阶凸台" not in str(info.get("feature_type")):
+        raise AssertionError(f"unexpected multistep transition label: {info.get('feature_type')}")
+    if feature_dimension_rows(model, face_id, info) != ():
+        raise AssertionError("blocked multistep transition face should not expose editable dimensions")
+
+    target_center = info.get("area_center")
+    if not isinstance(target_center, (list, tuple)) or len(target_center) != 3:
+        raise AssertionError(f"multistep transition face lacks a stable center: {info}")
+    center_target = (float(target_center[0]) + 0.5, float(target_center[1]), float(target_center[2]))
+    plans = (
+        model.push_pull_plan(face_id, 1.0),
+        model.shell_thickness_plan(face_id, 2.5),
+        model.face_size_local_resize_plan(face_id, 9.0, "width"),
+        model.face_center_local_move_plan(face_id, center_target),
+    )
+    for plan in plans:
+        if plan.get("status") != "blocked":
+            raise AssertionError(f"multistep transition plan should be blocked: {plan}")
+        message = str(plan.get("message") or plan.get("blockers") or "")
+        if "多台阶" not in message or "暂不支持" not in message:
+            raise AssertionError(f"multistep transition plan should explain unsupported scope: {plan}")
+
+    leaked_entries = [
+        item
+        for item in model.editable_feature_candidates(limit=80, detailed=False)
+        if int(item.get("target_id", -1)) == face_id
+        and str(item.get("operation_key") or "") in {"push_pull_plane", "resize_shell_thickness"}
+    ]
+    if leaked_entries:
+        raise AssertionError(
+            f"blocked multistep transition face should not leak editable scan entries: {leaked_entries}"
+        )
+
+
 def assert_prismatic_feature_display_labels() -> None:
     state = object.__new__(WindowStateMixin)
     if state._feature_display_label("矩形口袋候选") != "矩形槽/口袋":
@@ -432,6 +488,7 @@ def main() -> int:
         multistep_path = temp_path / "rectangular-multistep-boss.step"
         write_rectangular_multistep_boss_model(multistep_path)
         multistep_model = StepModel.load(multistep_path)
+        assert_multistep_transition_guard(multistep_model)
         multistep_face_id, multistep_info = find_prismatic_semantics(multistep_model, "additive-boss")
         assert_prismatic_sizes(multistep_info, 6.0, 4.0, 2.0)
         assert_rectangular_feature_ui(