feat(cadfs): 补齐核心建模能力并建立代表性回归

- 新增 loft、双向切除、through-all/up-to-next 等 CADFS lowering 与 engine 支持
- 支持多种 reference plane、B-spline profile 和 circular pattern replay
- 保留 transform 历史，并烘焙安全的单源平移/旋转变换
- 改进 selector 绑定、拓扑快照和 pattern 变换处理
- 建立 17 个代表样本的转换、重建与比较回归工具链
- 补充 schema、author guidance、运行时和几何回归测试

backend/engine/cdsl_engine/profile_schema.json

@@ -1,15 +1,17 @@
 {
   "schema": "cdsl.engine.schema.v1",
-  "schema_version": "1.3.1",
+  "schema_version": "1.3.2",
   "cdsl_json_schema_file": "cdsl_schema.json",
   "maintenance_rule": "The CDSL-only runtime contract is limited to direct generic profiles and runtime.py EXECUTORS. Legacy macro profiles are importer compatibility syntax and must be lowered by cdsl_importer.legacy_profile_adapter before generic runtime validation.",
   "coordinate_convention": "All profile dimensions use millimetres. Two-dimensional points are [u, v] in the sketch workplane.",
   "runtime_supported_profiles": ["circle", "polygon", "analytic_contours"],
   "operation_contracts": {
     "extrude_add_blind": {"atomic_id":"extrude_add_blind","contract_version":"3.0","fragment_shape":{"sketch":"required","params":"required_object","selector_tokens":"forbidden"},"author_params_schema":{"type":"object","properties":{"distance_mm":{"type":"number","exclusiveMinimum":0},"reverse":{"type":"boolean"}},"required":["distance_mm"],"additionalProperties":false},"selector_policy":{"slot":null,"token_kind":null,"min_items":0,"max_items":0,"snapshot_bound":false},"server_injected_paths":[],"reference_policy":{"mode":"none"},"semantic_preflight":["sketch_workplane","profile_non_self_intersecting"],"candidate_verifiers":["single_connected_body"]},
+    "loft_add": {"atomic_id":"loft_add","contract_version":"3.0","fragment_shape":{"sketch":"forbidden","params":"required_object","selector_tokens":"forbidden"},"author_params_schema":{"type":"object","properties":{"profile_sketch_ids":{"type":"array","items":{"type":"string","pattern":"^[A-Za-z0-9_-]{1,80}$"},"minItems":2,"maxItems":16,"uniqueItems":true}},"required":["profile_sketch_ids"],"additionalProperties":false},"selector_policy":{"slot":null,"token_kind":null,"min_items":0,"max_items":0,"snapshot_bound":false},"server_injected_paths":[],"reference_policy":{"mode":"none"},"semantic_preflight":["loft_profiles_exist","loft_profiles_closed","loft_profiles_single_region"],"candidate_verifiers":["single_connected_body"]},
     "extrude_add_two_sided": {"atomic_id":"extrude_add_two_sided","contract_version":"3.0","fragment_shape":{"sketch":"required","params":"required_object","selector_tokens":"forbidden"},"author_params_schema":{"type":"object","properties":{"distance_mm":{"type":"number","exclusiveMinimum":0},"reverse_distance_mm":{"type":"number","exclusiveMinimum":0},"reverse":{"type":"boolean"},"end_condition":{"type":"object","properties":{"type":{"type":"string","minLength":1,"maxLength":48},"solidworks_code":{"type":"integer"}},"required":["type","solidworks_code"],"additionalProperties":false},"reverse_end_condition":{"type":"object","properties":{"type":{"type":"string","minLength":1,"maxLength":48},"solidworks_code":{"type":"integer"}},"required":["type","solidworks_code"],"additionalProperties":false}},"required":["distance_mm","reverse_distance_mm"],"additionalProperties":false},"selector_policy":{"slot":null,"token_kind":null,"min_items":0,"max_items":0,"snapshot_bound":false},"server_injected_paths":[],"reference_policy":{"mode":"none"},"semantic_preflight":["sketch_workplane","profile_non_self_intersecting"],"candidate_verifiers":["single_connected_body"]},
     "extrude_cut_blind": {"atomic_id":"extrude_cut_blind","contract_version":"3.0","fragment_shape":{"sketch":"required","params":"required_object","selector_tokens":"forbidden"},"author_params_schema":{"type":"object","properties":{"distance_mm":{"type":"number","exclusiveMinimum":0},"reverse":{"type":"boolean"}},"required":["distance_mm"],"additionalProperties":false},"selector_policy":{"slot":null,"token_kind":null,"min_items":0,"max_items":0,"snapshot_bound":false},"server_injected_paths":[],"reference_policy":{"mode":"none"},"semantic_preflight":["requires_active_solid","sketch_workplane","profile_non_self_intersecting","cut_exit_distance"],"candidate_verifiers":["single_connected_body","volume_decreased"]},
     "extrude_cut_through": {"atomic_id":"extrude_cut_through","contract_version":"3.0","fragment_shape":{"sketch":"required","params":"required_object","selector_tokens":"forbidden"},"author_params_schema":{"type":"object","properties":{"reverse":{"type":"boolean"},"end_condition":{"type":"object","properties":{"type":{"type":"string","minLength":1,"maxLength":48},"solidworks_code":{"type":"integer"}},"required":["type","solidworks_code"],"additionalProperties":false}},"required":["end_condition"],"additionalProperties":false},"selector_policy":{"slot":null,"token_kind":null,"min_items":0,"max_items":0,"snapshot_bound":false},"server_injected_paths":[],"reference_policy":{"mode":"none"},"semantic_preflight":["requires_active_solid","sketch_workplane","profile_non_self_intersecting"],"candidate_verifiers":["single_connected_body","volume_decreased"]},
+    "extrude_cut_two_sided": {"atomic_id":"extrude_cut_two_sided","contract_version":"3.0","fragment_shape":{"sketch":"required","params":"required_object","selector_tokens":"forbidden"},"author_params_schema":{"type":"object","properties":{"distance_mm":{"type":"number","exclusiveMinimum":0},"reverse_distance_mm":{"type":"number","exclusiveMinimum":0},"reverse":{"type":"boolean"},"end_condition":{"type":"object","properties":{"type":{"type":"string","minLength":1,"maxLength":48},"solidworks_code":{"type":"integer"}},"required":["type","solidworks_code"],"additionalProperties":false},"reverse_end_condition":{"type":"object","properties":{"type":{"type":"string","minLength":1,"maxLength":48},"solidworks_code":{"type":"integer"}},"required":["type","solidworks_code"],"additionalProperties":false}},"required":["distance_mm","reverse_distance_mm"],"additionalProperties":false},"selector_policy":{"slot":null,"token_kind":null,"min_items":0,"max_items":0,"snapshot_bound":false},"server_injected_paths":[],"reference_policy":{"mode":"none"},"semantic_preflight":["requires_active_solid","sketch_workplane","profile_non_self_intersecting","cut_exit_distance"],"candidate_verifiers":["single_connected_body","volume_decreased"]},
     "revolve_add": {"atomic_id":"revolve_add","contract_version":"3.0","fragment_shape":{"sketch":"required","params":"required_object","selector_tokens":"forbidden"},"author_params_schema":{"type":"object","properties":{"angle_deg":{"type":"number","exclusiveMinimum":0,"maximum":360},"axis":{"type":"object","properties":{"origin_mm":{"type":"array","items":{"type":"number"},"minItems":3,"maxItems":3},"direction":{"type":"array","items":{"type":"number"},"minItems":3,"maxItems":3}},"required":["origin_mm","direction"],"additionalProperties":false},"reverse":{"type":"boolean"}},"required":["angle_deg","axis"],"additionalProperties":false},"selector_policy":{"slot":null,"token_kind":null,"min_items":0,"max_items":0,"snapshot_bound":false},"server_injected_paths":[],"reference_policy":{"mode":"none"},"semantic_preflight":["sketch_workplane","revolve_axis_on_sketch"],"candidate_verifiers":["single_connected_body"]},
     "revolve_cut": {"atomic_id":"revolve_cut","contract_version":"3.0","fragment_shape":{"sketch":"required","params":"required_object","selector_tokens":"forbidden"},"author_params_schema":{"type":"object","properties":{"angle_deg":{"type":"number","exclusiveMinimum":0,"maximum":360},"axis":{"type":"object","properties":{"origin_mm":{"type":"array","items":{"type":"number"},"minItems":3,"maxItems":3},"direction":{"type":"array","items":{"type":"number"},"minItems":3,"maxItems":3}},"required":["origin_mm","direction"],"additionalProperties":false},"reverse":{"type":"boolean"}},"required":["angle_deg","axis"],"additionalProperties":false},"selector_policy":{"slot":null,"token_kind":null,"min_items":0,"max_items":0,"snapshot_bound":false},"server_injected_paths":[],"reference_policy":{"mode":"none"},"semantic_preflight":["requires_active_solid","sketch_workplane","revolve_axis_on_sketch"],"candidate_verifiers":["single_connected_body","volume_decreased"]},
     "hole_blind": {"atomic_id":"hole_blind","contract_version":"3.0","fragment_shape":{"sketch":"forbidden","params":"required_object","selector_tokens":"required"},"author_params_schema":{"type":"object","properties":{"diameter_mm":{"type":"number","exclusiveMinimum":0},"depth_mm":{"type":"number","exclusiveMinimum":0},"positions":{"type":"array","minItems":1,"maxItems":64,"items":{"type":"object","properties":{"mm":{"type":"array","items":{"type":"number"},"minItems":3,"maxItems":3}},"required":["mm"],"additionalProperties":false}},"drill_angle_rad":{"type":"number","exclusiveMinimum":0,"maximum":3.141592653589793}},"required":["diameter_mm","depth_mm","positions"],"additionalProperties":false},"selector_policy":{"slot":"params.host_face","token_kind":"face","min_items":1,"max_items":1,"snapshot_bound":true},"server_injected_paths":["params.host_face"],"reference_policy":{"mode":"none"},"semantic_preflight":["host_face_exists","hole_positions_on_host_plane","cut_exit_distance"],"candidate_verifiers":["cylindrical_bore","through_cylindrical_bore"]},
@@ -71,7 +73,7 @@
       "constraints": ["vertices contains at least three [u, v] points"]
     },
     "analytic_contours": {
-      "summary": "Closed executable line, arc and circle contours. B-splines are unsupported in contours; imported construction B-splines are retained as non-executable audit geometry."
+      "summary": "Closed executable line, arc, circle and interpolation B-spline contours. Executable B-splines preserve ordered interpolation points and must be closed; imported construction B-splines remain non-executable audit geometry."
     }
   }
 }