backend/engine/cdsl_engine/capabilities.py

@@ -403,17 +403,17 @@ class CapabilityAnalyzer:
                             "booleanBodies requires explicit target and tool feature ids", parameter=parameter,
                         ))
                         continue
-                    for feature_id in feature_ids:
-                        source = nodes_by_id.get(str(feature_id))
+                    for source_id in feature_ids:
+                        source = nodes_by_id.get(str(source_id))
                         if source is None:
                             blockers.append(self._blocker(
                                 node.feature_id, "boolean_body_unavailable",
-                                "booleanBodies source feature does not exist", feature_id=feature_id,
+                                "booleanBodies source feature does not exist", missing_feature_id=source_id,
                             ))
                         elif source.feature_id not in completed:
                             blockers.append(self._blocker(
                                 node.feature_id, "boolean_body_unavailable",
-                                "booleanBodies source feature did not become executable", feature_id=feature_id,
+                                "booleanBodies source feature did not become executable", missing_feature_id=source_id,
                             ))
                 if isinstance(target_ids, list) and isinstance(tool_ids, list) and set(target_ids) & set(tool_ids):
                     blockers.append(self._blocker(

backend/engine/cdsl_engine/cdsl_schema.json

@@ -184,7 +184,8 @@
       "type": "object",
       "properties": {
         "radius_mm": {"$ref": "#/$defs/positive"},
-        "center_mm": {"$ref": "#/$defs/point3"}
+        "center_mm": {"$ref": "#/$defs/point3"},
+        "result_mode": {"enum": ["fuse", "new_body"]}
       },
       "required": ["radius_mm", "center_mm"],
       "additionalProperties": false
@@ -195,7 +196,8 @@
         "length_mm": {"$ref": "#/$defs/positive"},
         "width_mm": {"$ref": "#/$defs/positive"},
         "height_mm": {"$ref": "#/$defs/positive"},
-        "center_mm": {"$ref": "#/$defs/point3"}
+        "center_mm": {"$ref": "#/$defs/point3"},
+        "result_mode": {"enum": ["fuse", "new_body"]}
       },
       "required": ["length_mm", "width_mm", "height_mm", "center_mm"],
       "additionalProperties": false
@@ -205,7 +207,8 @@
       "properties": {
         "radius_mm": {"$ref": "#/$defs/positive"},
         "height_mm": {"$ref": "#/$defs/positive"},
-        "axis": {"$ref": "#/$defs/axis"}
+        "axis": {"$ref": "#/$defs/axis"},
+        "result_mode": {"enum": ["fuse", "new_body"]}
       },
       "required": ["radius_mm", "height_mm"],
       "additionalProperties": false
@@ -237,7 +240,8 @@
           },
           "required": ["origin_mm", "x_dir", "y_dir", "normal"],
           "additionalProperties": false
-        }
+        },
+        "result_mode": {"enum": ["fuse", "new_body"]}
       },
       "required": ["thickness_mm", "width_mm", "chain"],
       "additionalProperties": false
@@ -251,7 +255,8 @@
         "axis": {"$ref": "#/$defs/axis"},
         "helix_angle_rad": {"type": "number", "minimum": 0, "exclusiveMaximum": 0.7853981633974483},
         "pressure_angle_rad": {"type": "number", "exclusiveMinimum": 0, "maximum": 0.6108652381980153},
-        "herringbone": {"type": "boolean"}
+        "herringbone": {"type": "boolean"},
+        "result_mode": {"enum": ["fuse", "new_body"]}
       },
       "required": ["module_mm", "teeth_count", "width_mm", "axis"],
       "additionalProperties": false
@@ -263,7 +268,8 @@
         "teeth_count": {"type": "integer", "minimum": 1, "maximum": 2000},
         "thickness_mm": {"$ref": "#/$defs/positive"},
         "axis": {"$ref": "#/$defs/axis"},
-        "pressure_angle_rad": {"type": "number", "exclusiveMinimum": 0, "maximum": 0.6108652381980153}
+        "pressure_angle_rad": {"type": "number", "exclusiveMinimum": 0, "maximum": 0.6108652381980153},
+        "result_mode": {"enum": ["fuse", "new_body"]}
       },
       "required": ["module_mm", "teeth_count", "thickness_mm", "axis"],
       "additionalProperties": false
@@ -280,7 +286,8 @@
         "lefthand": {"type": "boolean"},
         "relief_length_mm": {"type": "number", "minimum": 0},
         "crest_radius_mm": {"type": "number", "minimum": 0},
-        "root_radius_mm": {"type": "number", "minimum": 0}
+        "root_radius_mm": {"type": "number", "minimum": 0},
+        "result_mode": {"enum": ["fuse", "new_body"]}
       },
       "required": ["major_diameter_mm", "minor_diameter_mm", "pitch_mm", "length_mm", "axis"],
       "additionalProperties": false
@@ -548,7 +555,7 @@
       "required": ["type", "contours"],
       "additionalProperties": false
     },
-    "feature_atomic_ids": {"enum": ["extrude_add_blind", "extrude_add_two_sided", "extrude_cut_blind", "extrude_cut_two_sided", "extrude_cut_through", "loft_add", "revolve_add", "revolve_cut", "hole_blind", "hole_countersink", "hole_counterbore", "sphere_add", "box_add", "cylinder_add", "thread_add", "thread_cut", "bend_add", "gear_add", "rack_add", "fillet", "chamfer", "pattern_linear", "pattern_mirror", "pattern_circular", "reference_plane", "reference_axis", "hole_wizard"]},
+    "feature_atomic_ids": {"enum": ["extrude_add_blind", "extrude_add_two_sided", "extrude_cut_blind", "extrude_cut_two_sided", "extrude_cut_through", "loft_add", "sweep_add", "revolve_add", "revolve_cut", "hole_blind", "hole_countersink", "hole_counterbore", "sphere_add", "box_add", "cylinder_add", "thread_add", "thread_cut", "bend_add", "gear_add", "rack_add", "fillet", "chamfer", "pattern_linear", "pattern_mirror", "pattern_circular", "boolean_bodies", "reference_plane", "reference_axis", "hole_wizard"]},
     "feature": {
       "type": "object",
       "properties": {

backend/engine/cdsl_engine/runtime.py

@@ -831,9 +831,32 @@ def _execute_reference_axis(node: FeaturePlanNode, session: ExecutionSession) ->
     return session.result(node, context=axis)
 
 
+def _register_added_solid(
+    session: ExecutionSession,
+    node: FeaturePlanNode,
+    solid: Any,
+) -> None:
+    """Register an additive primitive solid (box/cyl/sphere/thread/gear/rack/bend).
+
+    When ``node.params['result_mode'] == "new_body"`` the primitive is kept as
+    an independent body member so that downstream ``boolean_bodies`` can
+    reference it without pulling in the accumulated fuse history. The current
+    body is replaced by a Compound that preserves both, matching the
+    ``extrude_add_blind`` ``new_body`` semantics. Any other value (including
+    missing) falls back to the legacy fuse-into-body behavior.
+    """
+    if node.params.get("result_mode") == "new_body":
+        combined = session.adapter.combine(session.body, solid)
+        members = {**session.body_members, node.feature_id: solid}
+        session.register_body(node.feature_id, combined, replay_node=node, body_members=members)
+        return
+    fused = session.adapter.fuse(session.body, solid)
+    session.register_body(node.feature_id, fused, replay_node=node)
+
+
 def _execute_sphere(node: FeaturePlanNode, session: ExecutionSession) -> FeatureResult:
     # 球体特征（sphere_add）执行入口：按球心与半径生成球体并并入当前主体。
-    
+
     # 1. 解析参数：半径 radius_mm 与球心 center_mm。
     radius = float(node.params.get("radius_mm") or 0.0)
     center = node.params.get("center_mm") or []
@@ -843,7 +866,7 @@ def _execute_sphere(node: FeaturePlanNode, session: ExecutionSession) -> Feature
     # 3. 由适配器创建球体实体。
     solid = session.adapter.sphere(radius, (float(center[0]), float(center[1]), float(center[2])))
     # 4. 球体与当前主体做布尔并（fuse）后登记为新主体，并返回该特征的结果对象。
-    session.register_body(node.feature_id, session.adapter.fuse(session.body, solid), replay_node=node)
+    _register_added_solid(session, node, solid)
     return session.result(node)
 
 
@@ -869,7 +892,7 @@ def _execute_box(node: FeaturePlanNode, session: ExecutionSession) -> FeatureRes
     plane = PlaneSpec.from_mapping({"origin_mm": corner, "x_dir": [1, 0, 0], "normal": [0, 0, 1]})
     solid = session.adapter.box(length, width, height, plane)
     # 3. 与当前主体做布尔并后登记为新主体，并返回该特征的结果对象。
-    session.register_body(node.feature_id, session.adapter.fuse(session.body, solid), replay_node=node)
+    _register_added_solid(session, node, solid)
     return session.result(node)
 
 
@@ -893,7 +916,7 @@ def _execute_cylinder(node: FeaturePlanNode, session: ExecutionSession) -> Featu
     # 2. 由适配器创建原生圆柱（axis=None 即世界 +Z 过原点）。
     solid = session.adapter.cylinder(radius, height, axis)
     # 3. 与当前主体做布尔并后登记为新主体，并返回该特征的结果对象。
-    session.register_body(node.feature_id, session.adapter.fuse(session.body, solid), replay_node=node)
+    _register_added_solid(session, node, solid)
     return session.result(node)
 
 
@@ -904,7 +927,7 @@ def _execute_thread(node: FeaturePlanNode, session: ExecutionSession) -> Feature
     # 2. 由适配器门面生成沿 spec.axis 放置的外螺纹实心段。
     solid = session.adapter.thread_solid(spec)
     # 3. 与当前主体做布尔并（fuse）后登记为新主体，并返回该特征的结果对象。
-    session.register_body(node.feature_id, session.adapter.fuse(session.body, solid), replay_node=node)
+    _register_added_solid(session, node, solid)
     return session.result(node)
 
 
@@ -938,7 +961,7 @@ def _execute_bend(node: FeaturePlanNode, session: ExecutionSession) -> FeatureRe
     # 2. 由适配器门面生成沿 spec.frame 放置的折弯实心段。
     solid = session.adapter.bend_solid(spec)
     # 3. 与当前主体做布尔并（fuse）后登记为新主体，并返回该特征的结果对象。
-    session.register_body(node.feature_id, session.adapter.fuse(session.body, solid), replay_node=node)
+    _register_added_solid(session, node, solid)
     return session.result(node)
 
 
@@ -955,7 +978,7 @@ def _execute_gear(node: FeaturePlanNode, session: ExecutionSession) -> FeatureRe
     # 2. 由适配器门面生成沿 spec.axis 放置的齿轮实体（直齿/斜齿/人字齿）。
     solid = session.adapter.gear_solid(spec)
     # 3. 与当前主体做布尔并（fuse）后登记为新主体，并返回该特征的结果对象。
-    session.register_body(node.feature_id, session.adapter.fuse(session.body, solid), replay_node=node)
+    _register_added_solid(session, node, solid)
     # 4. 小齿数根切风险：不阻断执行，附加 info 级诊断供完成报告如实披露。
     diagnostics: list[RuntimeDiagnostic] = []
     if spec.teeth_count < 17:
@@ -983,7 +1006,7 @@ def _execute_rack(node: FeaturePlanNode, session: ExecutionSession) -> FeatureRe
     # 2. 由适配器门面生成沿 spec.axis 放置的齿条实体（齿沿轴方向伸出）。
     solid = session.adapter.rack_solid(spec)
     # 3. 与当前主体做布尔并（fuse）后登记为新主体，并返回该特征的结果对象。
-    session.register_body(node.feature_id, session.adapter.fuse(session.body, solid), replay_node=node)
+    _register_added_solid(session, node, solid)
     return session.result(node)