feat(selector): 增加离线候选遍历与严格回放验证 Demo

- 新增 selector_candidate_demo，移除 provenance intent 后枚举候选 selector
- 对候选分支执行有界重建与严格 STEP 比较
- 仅在候选遍历完整且唯一 strict 通过时生成 selector 映射记录
- 增加 selector 候选搜索、预算限制和记录生成的测试
- 保持生产 selector resolver 不受 Demo 逻辑影响
- 更新 CADFS 能力台账，记录 IMPRINT 派生 profile 的 lineage selector 缺口

backend/engine/cdsl_engine/executors/holes.py

@@ -31,6 +31,23 @@ def _execute_hole(node: FeaturePlanNode, session: "ExecutionSession", *, wizard:
     # 1. 校验：孔是切除操作，必须先有主体。
     if session.body is None:
         raise ValueError("hole feature has no body")
+    scope_feature_id = node.params.get("scope_feature_id")
+    if scope_feature_id is not None:
+        if not isinstance(scope_feature_id, str) or not scope_feature_id:
+            raise ValueError("hole scope_feature_id is invalid")
+        if len(session.body_members) != 1:
+            raise ValueError("hole scope body is no longer the sole active member")
+        scoped_body = session.body_members.get(scope_feature_id)
+        if scoped_body is None:
+            raise ValueError("hole scope body is no longer an independently selectable member")
+        scoped_solids = session.adapter.body_solids(scoped_body)
+        active_solids = session.adapter.body_solids(session.body)
+        if (
+            len(scoped_solids) != 1
+            or len(active_solids) != 1
+            or not scoped_solids[0].is_same(active_solids[0])
+        ):
+            raise ValueError("hole scope body does not match the active body")
     # 2. 确定宿主面 host_face：
     host_selector = node.params.get("host_face")
     if isinstance(host_selector, dict) and isinstance(host_selector.get("frame"), dict):
@@ -74,5 +91,9 @@ def _execute_hole(node: FeaturePlanNode, session: "ExecutionSession", *, wizard:
             message="Thread decoration is not modeled; the hole falls back to a plain cylindrical bore",
             feature_id=node.feature_id,
         ))
-    session.register_body(node.feature_id, session.adapter.cut(session.body, tool), replay_node=node)
+    result_body = session.adapter.cut(session.body, tool)
+    members = {scope_feature_id: result_body} if scope_feature_id is not None else None
+    session.register_body(
+        node.feature_id, result_body, replay_node=node, body_members=members,
+    )
     return session.result(node, diagnostics=diagnostics)