refactor: simplify distillation data layout

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()