docs(render): record foundry-deep; the retail capture session is complete

All four kit poses plus the extra cathedral-leak pose have walk (with
LC/SC), parts and alpha-depth transcripts from the paired 2013 client.
S3 chunk 1 is unblocked.

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

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

@@ -198,7 +198,20 @@ Lead verifies every finding against the source before an edit (S2 precedent:
   vista oracle holds and the owner stood at the same edge), `terrace-edge.parts.log` (3 frames, 11,767 PD / 5,173 DM — the
   densest pose), `terrace-edge.alphadepth.log` (5 frames, 6,880 AM / 3,515 FL /
   10 PM / 10 PC). No memory errors.
-- Remaining pose per the kit README: `foundry-deep`.
+- **Pose `foundry-deep`** (owner "ready" 2026-09-03 ~07:50): DI `a9b40176`,
+  root `DC ov=1 n=2: a9b40176 a9b40177` — the surviving stairwell chain FW0
+  recorded; frame 2: 62 LC / 161 SC / 12 BLD (the landscape and 12 town
+  buildings drawn from the basement and buried by depth, exactly FW0's
+  reading). `logs/oh-capture/foundry-deep.walk.log` (5 frames, 1,269 lines; 10
+  EC / 10 OC), `foundry-deep.parts.log` (3 frames, 2,524 PD / 189 DM),
+  `foundry-deep.alphadepth.log` (5 frames, 104 AM / 700 FL / 4 PM / 4 PC). No
+  memory errors.
+- **CAPTURE SESSION COMPLETE 2026-09-03:** the four kit poses
+  (`holtburg-doorway-still`, `terrace-edge`, `cathedral-arrival`, `foundry-deep`)
+  plus the extra `cathedral-leak` pose each have walk (5 frames, with LC/SC),
+  parts (3 frames) and alpha-depth (5 frames) transcripts under
+  `logs/oh-capture/` (untracked; the §6b lines above are the durable record).
+  Chunk 1 (transcript emitter + parser + fixture import) is UNBLOCKED.
 
 ## 7. Open questions for the capture session (ask for exactly these two)