refactor: simplify distillation data layout

text-to-cad/skills/cad-router/references/backend-contract.md

@@ -58,7 +58,7 @@ Write `cad-task.json` beside the task artifacts with this minimum shape:
   ],
   "parameters": {},
   "experience": {
-    "library": "../../../designir-pipeline/workspace/promotion/promoted/library.json",
+    "library": "../../../designir-pipeline/output/library.json",
     "context_kind": "generalized_cad_experience_query",
     "methods_applied": []
   },
@@ -74,10 +74,10 @@ have a sibling `*.designir.json` that owns its coordinate system, datums,
 parameters, expressions, features, constraints, edit interface, and validation
 contract. See `designir-2.0.md`.
 
-For an uploaded STEP, keep teacher geometry in the protected ingestion and
-acceptance workspace. The reconstruction task contains private evidence,
-DesignIR, backend source, and rebuilt STEP but no teacher STEP or imported
-B-Rep.
+For an uploaded STEP, keep teacher geometry in `designir-pipeline/input/` and
+all private evidence, DesignIR candidates, rebuilds, and acceptance reports in
+`designir-pipeline/runs/`. The reconstruction task receives evidence but no
+teacher STEP or imported B-Rep.
 
 ## Backend adapter requirements
 

text-to-cad/skills/cad-router/scripts/route.py

@@ -241,15 +241,13 @@ def default_experience_library() -> Path | None:
     configured = os.environ.get("CAD_EXPERIENCE_LIBRARY", "").strip()
     if configured:
         return Path(configured).expanduser()
-    workspace_candidate = (
+    published_candidate = (
         SKILL_ROOT.parents[2]
         / "designir-pipeline"
-        / "workspace"
-        / "promotion"
-        / "promoted"
+        / "output"
         / "library.json"
     )
-    return workspace_candidate if workspace_candidate.is_file() else None
+    return published_candidate if published_candidate.is_file() else None
 
 
 def classify_edit_context(
@@ -265,20 +263,18 @@ def classify_edit_context(
             (
                 SKILL_ROOT.parents[2]
                 / "designir-pipeline"
-                / "workspace"
-                / "teacher"
+                / "input"
             ).resolve(),
             (
                 SKILL_ROOT.parents[2]
                 / "designir-pipeline"
-                / "workspace"
-                / "acceptance"
+                / "runs"
             ).resolve(),
         ]
         if any(source == root or root in source.parents for root in protected_roots):
             raise ValueError(
-                "cad-router reconstruction cannot read the teacher or acceptance "
-                "vault; pass the ingestion job reference or an editable DesignIR"
+                "cad-router reconstruction cannot read distillation input or run "
+                "artifacts; pass an editable DesignIR outside the private pipeline"
             )
     suffix = source.suffix.lower() if source else ""
     text = request.lower()

text-to-cad/tests/python/skills/cad-router/test_route.py

@@ -363,12 +363,10 @@ class CadRouterTests(unittest.TestCase):
         teacher_source = (
             Path(__file__).resolve().parents[5]
             / "designir-pipeline"
-            / "workspace"
-            / "teacher"
-            / "inbox"
+            / "input"
             / "part.step"
         )
-        with self.assertRaisesRegex(ValueError, "cannot read the teacher"):
+        with self.assertRaisesRegex(ValueError, "cannot read distillation input"):
             route_module.route(
                 self.parse(
                     "修改这个零件",
@@ -377,6 +375,23 @@ class CadRouterTests(unittest.TestCase):
                 )
             )
 
+    def test_private_run_artifact_is_rejected_as_edit_source(self) -> None:
+        run_source = (
+            Path(__file__).resolve().parents[5]
+            / "designir-pipeline"
+            / "runs"
+            / "designir"
+            / "part.designir.json"
+        )
+        with self.assertRaisesRegex(ValueError, "cannot read distillation input"):
+            route_module.route(
+                self.parse(
+                    "修改这个零件",
+                    "--edit-source",
+                    str(run_source),
+                )
+            )
+
 
 if __name__ == "__main__":
     unittest.main()