cdsl新增一些笼统的指标集

backend/app/cad_agent/adapters/runtime.py

@@ -15,6 +15,7 @@ from app.cad_agent.domain.operation_contract import (
     validate_operation_contract,
 )
 from app.cad_agent.ports import AdapterUnavailable
+from app.services.derived_metrics import derive_metrics, make_prefix_runner
 from app.services.engine_service import load_engine, topology_snapshot, validate_cdsl, validate_cdsl_shape
 from app.services.render_bundle import RenderBundleError, render_checkpoint
 from app.settings import Settings
@@ -102,7 +103,6 @@ class ProfileCadRuntime:
         cdsl_copy = deepcopy(cdsl)
         cdsl_copy["part_id"] = task_id
         step_path = root / "model.step"
-        self._write_json(root / "model.cdsl.json", cdsl_copy)
         try:
             self._validate_finite_tree(cdsl_copy)
             validate_cdsl(cdsl_copy, self.engine)
@@ -112,6 +112,15 @@ class ProfileCadRuntime:
             health = self._health(engine_result, step_path)
             topology = topology_snapshot(engine_result, task_id=task_id, revision_id=revision_id)
             self._write_json(root / "model.topology.json", topology)
+            # Derived metrics are backfilled after validation, so they can
+            # never influence acceptance; the persisted document carries them
+            # for training while rebuild behavior stays untouched.
+            derived = derive_metrics(
+                cdsl_copy, engine_result, topology,
+                prefix_runner=make_prefix_runner(self.engine.run_cdsl_only),
+            )
+            cdsl_copy.setdefault("meta", {})["derived_metrics"] = derived
+            self._write_json(root / "model.cdsl.json", cdsl_copy)
             report = {"engine_result": engine_result, "preview": {}, "health": health, "render_manifest": {}}
             self._write_json(root / "rebuild-report.json", report)
             return {"health": health, "topology": topology, "report": report, "render_manifest": {}, "paths": {"cdsl": "model.cdsl.json", "step": "model.step", "topology": "model.topology.json", "report": "rebuild-report.json"}}