diff --git a/src/AcDream.App/Rendering/Wb/ObjectMeshManager.cs b/src/AcDream.App/Rendering/Wb/ObjectMeshManager.cs
index f73e9226..7817fa75 100644
--- a/src/AcDream.App/Rendering/Wb/ObjectMeshManager.cs
+++ b/src/AcDream.App/Rendering/Wb/ObjectMeshManager.cs
@@ -1023,16 +1023,22 @@ namespace AcDream.App.Rendering.Wb {
             // The Holtburg meeting hall (0x010014C3) keeps its walkable exterior
             // stair-ramp as dictionary polys {0,1}: in the PhysicsBSP (NPCs walk
             // it) but absent from every DrawingBSP node — retail shows a plain
-            // wall; iterating the dictionary drew the "phantom staircase"
+            // wall; iterating the dictionary draws the "phantom staircase"
             // (invisible-but-walkable in retail, visible in acdream). The hill
-            // cottage (0x01000827) carries 8 such orphans. Filter to the BSP-
-            // referenced set when a drawing BSP exists; models without one draw
-            // everything (unchanged).
-            var drawnPolyIds = CollectDrawingBspPolygonIds(gfxObj);
-
+            // cottage (0x01000827) carries 8 such orphans.
+            //
+            // ⚠️ FILTER NOT APPLIED (e46d3d9 un-applied same day): naively
+            // filtering to CollectDrawingBspPolygonIds(gfxObj) made DOORS
+            // disappear across Holtburg (user gate 2026-06-11) — the naive
+            // PosNode/NegNode walk evidently misses polys some models reference
+            // another way (portal-type nodes? leaf indexing? DatReaderWriter
+            // parse gap?). Diagnose with the histogram fact in
+            // Issue113PhantomStairsDumpTests on a door GfxObj BEFORE re-landing.
+            // The full retail draw is BSP-TRAVERSAL ORDER drawing, not a
+            // dictionary iteration with a filter — see the holistic port handoff
+            // docs/research/2026-06-11-building-render-holistic-port-handoff.md.
             foreach (var polyEntry in gfxObj.Polygons) {
                 ct.ThrowIfCancellationRequested();
-                if (drawnPolyIds is not null && !drawnPolyIds.Contains(polyEntry.Key)) continue;
                 var poly = polyEntry.Value;
                 if (poly.VertexIds.Count < 3) continue;