diff --git a/THREADS.md b/THREADS.md
index 4fe20cc..08e647b 100644
--- a/THREADS.md
+++ b/THREADS.md
@@ -8985,3 +8985,67 @@ anchors are your GLB), but the tooling is now waiting, not TODO.
     play through the board (at least one alternative offer, one constrained job). Gate 4
     (John plays the seven at partly.party) closes the sprint; deploy fires after D's pass
     integrates.
+
+[D] 2026-07-21 — 🌊 **GATE 3.2 LANDED: THE POOL YARD — authored cold, priced by the gauntlet,
+    refused honestly, and in the game only if somebody chooses it.** Selftest 515/0/0 (510 + 5
+    pool-yard pins, the count moved exactly by what was added). The first yard with no NIGHTS
+    slot: `pool_yard_southerly` is a POOL entry in board.js (A's granted edit) and nothing else —
+    decline it all week and the campaign is complete without it, which is arc 2's promise made
+    literal.
+
+    **THE YARD (site_04_pool_yard, "The Pool Yard", the Karalis place):** E's pool ring east —
+    fourteen perfect posts, every one an honest no — the bed poolside, and ONE corroded post
+    (c1, 0.55, $45) standing in the venturi channel between the house's east end and the pool
+    enclosure, exactly where the bed's NE corner wants steel. Honest steel is scarce and west
+    (gum t1/t1b, posts p1-p3, the familiar 0.35 fascia). Authored cold in the editor — palette
+    shapes, editor placement, iterative SCORE IT, canonical exportJSON; three passes (first cut
+    made TWO in-band quads — anchors spread past the 18-45 m² band; the band is a level-design
+    law I now have a feel for).
+
+    **THE NUMBERS (SCORE IT card = audit.html over the shipped file, zero delta between the two
+    harnesses):** WINNABLE at $80 — 13 quads in band, 6 clean, 1 marginal. Cheapest hold $40
+    (h1,t1b,p2,p3 → 92.7 FULL, 58% cover, no rust in it). **Every 92%-cover line routes through
+    c1 — full shade in this yard has rust in it or it does not exist.** And the tier does what E
+    built it for: the SAME eye flies 1.9 kN (clean, $30 rated) on t1,p1,p2,c1 and 3.6-4.1 kN
+    (UNHOLDABLE at any price) on t1,t1b,p2,c1 / t1b,p1,p2,c1 — swap one gum anchor and the
+    gamble flips, and nothing on the object tells you which. **HOW CORROSION PRICES: +$25 of
+    hardware you must rate up (a $5 carabiner corner becomes a $30 rated corner), a $45
+    collateral stake, and a shape-sensitivity you cannot read off the post.** Fence compliance
+    prices as ABSENCE: the ring contributes zero anchors and zero exposure — the offer card's
+    $160 (gutter 90 + rust 45 + gnome 25) deliberately does not name the fence, because "not
+    scored" must never read as "free" and nothing can bend a pool fence yet (bike rule).
+
+    **SEPARATION: REFUSED, third in the family, receipts in the site file** — bare 83.7 FULL
+    vs best flown 92.7 (+9.0): bareMustLoseBelow cannot be written; the southerly cannot kill
+    an open bed. First refusal authored AFTER A's 0.4 ruling made the pattern canon, and this
+    yard IS that canon on purpose: the sail here is for the steel and the collateral. Flagged
+    for B: when the garden-BONUS separation shape lands, this yard's +9.0-at-$40 is a
+    bonus-stake candidate — re-measure then.
+
+    **⚠️ FILED — THE SECOND-RUST-POST LANDMINE (E/A, before any yard ships two):** two
+    corroded posts in one yard SHARE the baked `collateral: 'corroded_post'` key.
+    structFor/wreckStructure match the FIRST entry with the key and C's failure envelope
+    dedupes keys — so the second post's failure would bill once and wreck the wrong post
+    (free-failure bug in a rust costume). The pool yard ships ONE post on purpose and pins it
+    (d.test). A second rung in one yard needs per-instance key plumbing first.
+
+    **PINS (+5, d.test):** chosen-never-scripted (no NIGHTS slot, POOL entry with receipt,
+    southerly = the taught storm) · ring adopts nothing + unpriced-by-ruling, rust adopts once
+    at type corroded_post/$45/wreck wired, exactly ONE rust post · separation-judged XOR with
+    the receipts' own numbers · wreck apron threads the needle (bed east 2.5 ≤ shaft west
+    2.84; shaft east 3.36 ≤ ring west 3.7 — E's +Z 3.9 m apron lands in the path, in the
+    yard) · exposureOf = $160 with exactly three items and the fence in none of them.
+    Cross-lane, flagged (revert-and-tell-me): gardenfly.selftest's judged walk grew
+    site_04_pool_yard and its count moved 3→4 in the same commit that ships the yard — a yard
+    missing from that walk is unjudged SILENTLY, which is the silence the gate forbids.
+
+    **MUTATIONS — 1 full-suite, 10 probed, every one red with its own words:** the finding
+    stripped from the site file ran the REAL suite to **513/2** — B's extended walk red
+    ("site_04_pool_yard has neither a separation block nor a _separation_finding — the yard
+    is UNJUDGED") AND my XOR pin red ("silence is not an option") — the double tooth proving
+    the walk extension covers the new yard. Probed against mirrored assert expressions
+    (B's S17 precedent, disclosed): entry deleted / re-paired to the wildnight / receipt
+    stripped / scripted slot added; gnome unpriced ($135) / rust zeroed ($115) / fence
+    priced ($460 — the bike-rule breach reads as red, not as revenue); c1 nudged into the
+    ring apron (3.86 > 3.70) / bed widened under the shaft / c1 falling over the south
+    fence. Controls green on the shipped data.