docs(render): record the holtburg-doorway-still retail capture (S3 §6b)

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

docs/research/2026-09-01-overhaul/s3-walk-ownership-map.md

@@ -180,8 +180,15 @@ Lead verifies every finding against the source before an edit (S2 precedent:
   in-view cells (`RenderDeviceD3D::DrawBlock` @0x005a19d9 — chunk 3 re-reads the
   exact gate). Per frame: leak pose 531 LC / 757 SC / 16 BLD; arrival pose
   533 LC / 698 SC / 14 BLD.
-- Remaining poses per the kit README: `holtburg-doorway-still`,
-  `terrace-edge`, `foundry-deep`.
+- **Pose `holtburg-doorway-still`** (owner "ready" 2026-09-03 ~07:35): transcript
+  `logs/oh-capture/holtburg-doorway-still.walk.log` (5 frames, 5,986 lines: DI
+  `a9b4013f`; frame 2: root `DC pv=009d4f48 ov=2 n=3: a9b4013f a9b40150 a9b4014c`, 5 look-in DC turns (`ov=0`,
+  cells `a9b40103`/`a9b40100` — the same cell punched by consecutive look-ins,
+  as FW0 noted), 469 LC / 677 SC / 13 BLD; 45 EC / 45 OC over 5 frames),
+  `holtburg-doorway-still.parts.log` (3 frames, 3,304 PD / 510 DM),
+  `holtburg-doorway-still.alphadepth.log` (5 frames, 430 AM / 3,414 FL / 35 PM /
+  29 PC). No memory errors.
+- Remaining poses per the kit README: `terrace-edge`, `foundry-deep`.
 
 ## 7. Open questions for the capture session (ask for exactly these two)