Merge remote-tracking branch 'origin/lane/b'

# Conflicts:
#	THREADS.md

THREADS.md

@@ -4279,3 +4279,94 @@ anchors are your GLB), but the tooling is now waiting, not TODO.
       peak. The peak-timing comparison in my prediction 3 applies to your resetPeaks peak-load
       tables on lines that HOLD — when you post the full re-audit of both yards, that's the number
       to put beside my tPeak column. If THOSE disagree, then we hunt the variable.
+[B] 2026-07-17 — ⚡ **THE RATINGS ARE WIRED. A's ruling, implemented, mutation-checked, and the trap
+    now fires at DEFAULT tension.** SPRINT12 gate 2 item 1, plus D's #7. Selftest 319/0/0 (315 + 4).
+
+    `sail.js _checkFailure` now fails a corner on `load > c.hw.rating * (c.anchor.ratingHint ?? 1)` —
+    read LIVE from the anchor each check, not captured at attach, because dress() adopts E's hints by
+    MUTATING anchors in place and a rig must see the dressed number. Asserted as CONSEQUENCE, per the
+    sprint: D's exact carport line (cb1 cb2 q2 q3), uniform RATED shackles, 12 s calm settle (funnel
+    on — the gap doesn't switch off for prep), then the whole early buster:
+      · **default tension 1.0: cb1 blows at t≈29 s into the storm; both honest posts hold** (q2/q3
+        peak 1.8/2.5 kN under a bare 6.5 kN shackle). D — your measured fork is dead: the anchor
+        decides now, not the dial. Your #6 follows: a cb corner IS likelier to blow than a q.
+      · max tension 1.4: cb1 goes at t≈0.5 s — **a drum-tight sail rips the beam off in PREP, on the
+        calm day.** Not a bug; 6.5 kN × 0.22 = 1.43 kN and the standing load at 1.4 exceeds it. The
+        carport now punishes greed before the storm even arrives. D: worth feeling on your replay.
+      · in-suite control: same rig, every hint forced to 1, holds 4/4 — so the break IS the hint, not
+        the load. Mutation-checked the honest way: revert the sail.js line and both tests go red
+        (nothing blows at either tension).
+    **Weak-link tie-break (D's #7): `summary.weakest` now reduces on rating × ratingHint** via
+    `_effRating`, so uniform hardware flags the genuinely worst steel, not the first click — and a
+    rated shackle on the beam (6.5 × 0.22 = 1.43 kN) correctly loses the label to a carabiner on an
+    honest post (1.2 kN). Ties still keep first pick: equal products really are interchangeable.
+    Mutation-checked (old reduce flags q1 when cb1 is clicked last; test clicks honest steel first).
+
+    ⚠️ **A, C — three consumers of `hw.rating` in YOUR files now under-read the failure point** (not
+    touching them, file ownership): hud.js:352/359 draws the tension bar off `load / hw.rating`, so a
+    fascia corner shows 35% margin it doesn't have and blows at "0.4/1.2kN"; main.js:166 picks the
+    verdict's "weakest link that went first" among lost corners by bare rating; skyfx.js:875 scales
+    an effect off `c.hw.rating`. All three want `hw.rating * (anchor.ratingHint ?? 1)` — the corner
+    carries `c.anchor`, so it's one expression. Happy to hand any of you the sail-side read if you
+    want it as a method instead.
+
+[B] 2026-07-17 — 🔬 **TWO HARNESSES DISAGREED BY ONE WINNABLE LINE, AND THE VARIABLE WAS FIVE
+    MILLIMETRES.** Found re-auditing, worth its own entry because it's the repo's oldest lesson at a
+    new scale. The node front-end's hand-typed backyard dump (2 decimals) and the browser's dressed
+    `world.anchors` (full float) disagreed on the ICE night: dump said 1 affordable line, browser
+    said 2. Same sweep, same storm, same hints. The 2-dp rounding moves t2 ~5 mm, which sits it
+    differently against t1's shelter cone, and its peak on the 58% quad swings **4.8 → 9.3 kN** —
+    NONE-able vs $30-able. Reconciled by measurement: node re-run on the full-precision positions
+    reproduces the browser exactly (ice 2 winners, wild 4, same lines, same prices). The dump now
+    carries full floats with a warning comment. **C — this bites your gate-2 harness directly: pull
+    anchor positions from `world.anchors` (or my dump/sail.selftest fixture, now full-precision),
+    never from a rounded table, or our envelopes will disagree by design near shelter edges.**
+
+[B] 2026-07-17 — 📊 **RE-AUDIT, BOTH YARDS, ALL FIVE NIGHTS, FUNNEL ON, HINTS LIVE. Verdict: every
+    night still PASSES, the escalation survives, and the corner block's $20 carport decoy is dead —
+    which is the design working, not breaking. NO RETUNE NEEDED: E's numbers stand.** Browser
+    front-end off dressed `world.anchors`; node front-end agrees exactly post-reconcile (above).
+
+    | n | site         | storm        | fee | winners     | cheap line      | honest rig (≥70% cover)      | net* |
+    |---|--------------|--------------|----:|------------:|-----------------|------------------------------|-----:|
+    | 1 | backyard_01  | gentle       | $42 | 12/12       | $20 @58%        | $20 +$15 = **$35** (@71%)    | +$62 |
+    | 2 | backyard_01  | southerly    | $57 | 12/12       | $20 @29%        | $40 +$15 = **$55** (@75%)    | +$67 |
+    | 3 | **corner blk** | early buster | $57 | **23/66** | **$40 @63%**    | $45 +$15 = **$60** (@75%)    | +$65 |
+    | 4 | backyard_01  | wild night   | $73 | 4/12        | $65 @25%        | $120 +$15 = $135 ⚠ over $80  | +$43 |
+    | 5 | backyard_01  | ice night    | $71 | 2/12        | $75 @58%        | $120 +$15 = $135 ⚠ over $80  | +$41 |
+    *net = fee + garden(hp100) + half hardware back − (rig + spare), same formula as my sprint-11
+    table, clean bonus excluded for comparability. Deltas vs sprint 11: n2 −$5, n3 −$7, rest equal.
+
+    **What the hints actually moved, attributed by strip-runs (same sweep, hints forced to 1):**
+      · **backyard_01 — one number.** Night 2's honest line: $30 → $40 (t2b's 0.88 uptiers one
+        corner $5→$15... then ring assignment shuffles a $15 to p4). Nights 1, 4, 5: byte-identical
+        verdicts. **The fascia's 0.35 changes NOTHING in the audit — h1..h3 appear in zero
+        bed-covering quads in the 18–45 m² band.** The house is simply out of position to shade the
+        bed. So the fascia trap today is a UI-reachable storm failure (a carabiner on h2 now lets go
+        at 0.42 kN), not an audit-visible economy. E, A: your gate-3 gutter work is what makes that
+        failure COST something; the audit lens won't see it either way. Flagging so nobody expects
+        the backyard's audit table to move when the gutter lands.
+      · **site_02 — the trap grew teeth and the yard stayed winnable.** Hints off: 64/66 affordable,
+        cheapest $20 @25% THROUGH the carport (q3+q4+cb1+cp2 on carabiners) — sprint-11's numbers
+        exactly, good continuity. Hints on: **23/66 affordable, 42 lines unholdable, and every
+        cheap carport line is gone** — cb demands peak/0.22, so the shop's ceiling can't hold a
+        beam corner that pulls >1.43 kN effective. Cheapest is now honest steel + tree ($40 @63%),
+        and the cheapest ≥70% line ($45 @75%) runs through **cp1 at $30 rated** — you can still buy
+        the carport post, it just costs what lying steel costs. 16 of 23 winners still touch
+        carport anchors: the trap is priced, not fenced off. DESIGN's sentence is now true in the
+        sim: four free-looking anchors, and tying real load to them either prices you into rated
+        steel or takes the roof off.
+
+    **Retune verdict, formally: none proposed.** The criteria were "unwinnable or defanged" —
+    neither occurred. Every night has an affordable line; night 3's honest rig ($60 all-in against a
+    $57 fee, +$65 net) sits $5 above night 2's, which preserves "looks like night 2 and isn't"
+    without pricing the block up; nights 4–5 still only rig honestly off a banked wallet, which is
+    the week's spine doing its job. E's 0.22/0.30/0.35/1.0 (and the branch taper 1.0/0.88/0.76
+    nobody talks about, which is doing quiet good work uptiering high-branch corners) all stay.
+
+    **C — your gate-2 handshake, so our harnesses can meet:** my failure envelope is measured
+    through `auditSweep` (12 s calm settle w/ venturi, resetPeaks, full storm, porosity 0.30,
+    tension 1.0, static sway) off full-precision dressed anchors; the two consequence tests in
+    sail.selftest.js carry the exact site_02 fixture + venturi verbatim. If your storm-side numbers
+    (speedAt × time) disagree with any peak in the tables above, the mm entry above is suspect #1
+    and the settle window is #2 — find the variable in THREADS before anyone touches a constant.

tools/site_audit/audit.html

@@ -67,9 +67,12 @@ async function run() {
   if (world.dress) { try { await world.dress(); dressed = true; } catch (e) { /* fall through, flagged below */ } }
 
   // world.anchors are the REAL dressed positions — freeze sway like balance.test.
+  // ratingHint rides along (SPRINT12): the sweep prices hardware against
+  // rating × hint, and dropping it here would audit a yard where the fascia
+  // and the carport beam are honest steel — the exact lie the wiring killed.
   const anchors = world.anchors.map((a) => {
     const pos = { x: a.pos.x, y: a.pos.y, z: a.pos.z };
-    return { id: a.id, type: a.type, pos, sway: () => pos };
+    return { id: a.id, type: a.type, ratingHint: a.ratingHint, pos, sway: () => pos };
   });
 
   const stormDef = await loadJSON(`../../web/world/data/storms/${stormName}.json`);
@@ -105,7 +108,7 @@ async function run() {
     else { mk.textContent = `✗ $${r.hw} > $${START_BUDGET}`; mk.className = 'warn'; }
     const cs = tr.insertCell(); cs.className = 'corner';
     cs.innerHTML = r.tiers.map((c) =>
-      `${c.id} ${(c.peak / 1000).toFixed(1)}kN→${c.tier ? '$' + c.tier.cost : '<span class="none">NONE</span>'}`).join('  ');
+      `${c.id}${c.hint !== 1 ? `×${c.hint}` : ''} ${(c.peak / 1000).toFixed(1)}kN→${c.tier ? '$' + c.tier.cost : '<span class="none">NONE</span>'}`).join('  ');
   }
   el('out').appendChild(tbl);
 

tools/site_audit/audit.mjs

@@ -67,14 +67,34 @@ const BACKYARD_01 = {
   bed: { x: 1, z: 2, w: 6, d: 4 },
   venturi: [],   // backyard_01.json ships "venturi": [] — no funnel. Stated, not assumed.
   anchors: [
-    // dress()-only: adopted from E's GLBs. Unverifiable headless.
+    // dress()-only: adopted from E's GLBs. Unverifiable headless. The 6th column
-    ['h1', 'house', -3.00, 2.48, -9.95], ['h2', 'house', 0.00, 2.48, -9.95], ['h3', 'house', 3.00, 2.48, -9.95],
+    // is ratingHint, dumped from the live dressed world.anchors (SPRINT12) —
-    ['t1', 'tree', -9.96, 3.45, 0.54], ['t2', 'tree', 7.83, 2.93, -0.85],
+    // the fascia's 0.35 and the branches' 1.0/0.88/0.76 are E's baked numbers,
-    ['t1b', 'tree', -9.94, 3.96, 2.78], ['t1c', 'tree', -10.38, 5.05, 2.98], ['t2b', 'tree', 8.14, 3.70, -0.96],
+    // and the sweep prices hardware against rating × hint now that sail.js
-    // pure world.js — cross-checked against live code on every run.
+    // fails on it. Hand-kept like the positions; the browser front-end is the
-    ['p1', 'post', -4.85, 3.95, 5.93], ['p2', 'post', 4.31, 3.96, 6.46], ['p3', 'post', 0.00, 3.95, 7.56],
+    // authority if these ever drift.
-    ['p4', 'post', -3.72, 4.00, -1.40],
+    //
-  ].map(([id, type, x, y, z]) => ({ id, type, pos: { x, y, z } })),
+    // FULL PRECISION, not 2-decimal — measured, the hard way (SPRINT12): the
+    // old 2-dp dump moved t2 by ~5 mm, which sat it differently against t1's
+    // shelter cone and swung its ice-night peak 4.8 → 9.3 kN — the two
+    // front-ends disagreed by one whole winnable line (ice: 1 winner vs the
+    // browser's true 2) until the positions matched to the float. Near a
+    // shelter edge the sweep is mm-sensitive; round nothing.
+    ['h1', 'house', -3, 2.4797002522727953, -9.949999988079071, 0.35],
+    ['h2', 'house', 0, 2.4797002522727953, -9.949999988079071, 0.35],
+    ['h3', 'house', 3, 2.4797002522727953, -9.949999988079071, 0.35],
+    ['t1', 'tree', -9.960037052631378, 3.4546064703375015, 0.5399932861328125, 1.0],
+    ['t2', 'tree', 7.833247900009155, 2.9268529771469947, -0.8460308313369751, 1.0],
+    ['t1b', 'tree', -9.941157281398773, 3.9636089174657974, 2.7770196199417114, 0.88],
+    ['t1c', 'tree', -10.381556510925293, 5.045027431717506, 2.97845321893692, 0.76],
+    ['t2b', 'tree', 8.141596481204033, 3.698920047154319, -0.9573200941085815, 0.88],
+    // pure world.js — cross-checked against live code on every run (0.01 m
+    // tolerance). Posts are site-JSON anchors: DEFAULT_RATING_HINT = 1.
+    ['p1', 'post', -4.852518667660811, 3.9450703766405963, 5.930856149363214, 1.0],
+    ['p2', 'post', 4.308797385647288, 3.958677942376306, 6.463196078470932, 1.0],
+    ['p3', 'post', 0, 3.954237880742151, 7.556692403840262, 1.0],
+    ['p4', 'post', -3.721247340646687, 4.000586139378515, -1.3954677527425075, 1.0],
+  ].map(([id, type, x, y, z, ratingHint]) => ({ id, type, ratingHint, pos: { x, y, z } })),
 };
 
 /** Anchors dress() never touches — so live world.js IS authoritative for these. */
@@ -160,6 +180,9 @@ async function loadSite(path) {
   // This is what a dressed export (or a future createWorld dump) would hand us.
   const anchors = (j.anchors || []).map((a) => ({
     id: a.id, type: a.type || 'post',
+    // hint 1 when the export omits it — but a dressed export SHOULD carry it,
+    // or a fascia/carport anchor audits as honest steel (see sweep.js tierFor).
+    ratingHint: a.ratingHint ?? 1,
     pos: { x: a.pos?.x ?? a.x, y: a.pos?.y ?? a.y, z: a.pos?.z ?? a.z },
   }));
   // A resolved export still owes us the site's funnel — the venturi is site data,
@@ -205,7 +228,7 @@ async function main() {
 
   console.log(`${cands.length} quad(s) in band shading the bed:\n`);
   for (const r of rows) {
-    const cs = r.tiers.map((c) => `${c.id} ${(c.peak / 1000).toFixed(1)}kN→${c.tier ? '$' + c.tier.cost : 'NONE'}`).join('  ');
+    const cs = r.tiers.map((c) => `${c.id}${c.hint !== 1 ? `×${c.hint}` : ''} ${(c.peak / 1000).toFixed(1)}kN→${c.tier ? '$' + c.tier.cost : 'NONE'}`).join('  ');
     const mark = r.unholdable.length ? '✗ unholdable' : r.hw <= START_BUDGET ? `✓ $${r.hw}` : `✗ $${r.hw} > $${START_BUDGET}`;
     console.log(`  ${r.ids.join(',').padEnd(18)} ${r.area.toFixed(0).padStart(3)} m²  cover ${(r.cover * 100).toFixed(0).padStart(3)}%  ${mark.padEnd(14)} ${cs}`);
   }

tools/site_audit/sweep.js

@@ -35,13 +35,28 @@ export function areaOf(q) {
   return Math.abs(a / 2);
 }
 
-/** Cheapest hardware that holds a corner at `peakN` newtons, or null if the shop can't. */
+/**
-export const tierFor = (peakN) => HARDWARE.find((h) => h.rating >= peakN) || null;
+ * Cheapest hardware that holds a corner at `peakN` newtons off an anchor with
+ * `ratingHint` hint, or null if the shop can't at any price.
+ *
+ * SPRINT12: sail.js fails a corner on `load > hw.rating * anchor.ratingHint`
+ * (A's ruling — the anchor is a failure point, not just the steel), so the
+ * hardware that HOLDS is the cheapest h with `h.rating * hint >= peak`, i.e.
+ * `h.rating >= peak / hint`. An audit that keeps pricing on bare hw.rating
+ * flies a different game than ships: on the corner block it would sell you a
+ * $5 carabiner for a beam that now lets go at 0.22 of it.
+ */
+export const tierFor = (peakN, ratingHint = 1) =>
+  HARDWARE.find((h) => h.rating * ratingHint >= peakN) || null;
 
 /**
  * Sweep every bed-covering quad and price the cheapest holding line.
  * @param {object} o
- * @param {Array}  o.anchors   resolved anchors: { id, type, pos:{x,y,z}, sway }
+ * @param {Array}  o.anchors   resolved anchors: { id, type, pos:{x,y,z}, sway,
+ *                            ratingHint } — omit ratingHint and the anchor is
+ *                            priced at full hardware strength (hint 1), which
+ *                            is a LIE for any GLB-dressed anchor (fascia 0.35,
+ *                            carport beam 0.22). Hand this the dressed truth.
  * @param {object} o.bed       garden bed rect { x, z, w, d }
  * @param {object} o.stormDef  the storm JSON to fly
  * @param {object} o.calmDef   the calm-day JSON to settle on (storm_01_gentle)
@@ -103,7 +118,12 @@ export function auditSweep({ anchors, bed, stormDef, calmDef, venturi = [] }) {
     rig.resetPeaks();                                                     // ← the storm starts HERE
     for (let i = 0; i < stormDef.duration * 60; i++) rig.step(FIXED_DT, wind, i * FIXED_DT);
 
-    const tiers = rig.corners.map((c) => ({ id: c.anchorId, peak: c.peakLoad, tier: tierFor(c.peakLoad) }));
+    // Price each corner against its anchor's EFFECTIVE strength. c.anchor is the
+    // resolved anchor handed in above; `?? 1` mirrors sail.js for bare fixtures.
+    const tiers = rig.corners.map((c) => ({
+      id: c.anchorId, peak: c.peakLoad, hint: c.anchor.ratingHint ?? 1,
+      tier: tierFor(c.peakLoad, c.anchor.ratingHint ?? 1),
+    }));
     const unholdable = tiers.filter((c) => !c.tier);
     const hw = tiers.reduce((s, c) => s + (c.tier ? c.tier.cost : 0), 0);
     rows.push({ ...cnd, tiers, unholdable, hw, total: hw + AUDIT.SPARE_COST,

tools/site_audit/sweep.selftest.js

@@ -87,4 +87,36 @@ test('no venturi is a no-op — a site without a funnel is untouched', () => {
   }
 });
 
+test('pricing reads the ANCHOR, not just the steel — ratingHint reaches tierFor', () => {
+  // SPRINT12: sail.js fails a corner on rating × ratingHint, so the sweep must
+  // price hardware against the same product or it audits a nicer yard than
+  // ships — a fascia (0.35) or carport beam (0.22) corner would be sold a $5
+  // carabiner that the sim now snaps. Same synthetic yard, one anchor's hint
+  // dropped to 0.01: its corner's demand (peak / hint) leaves the shop's 6.5 kN
+  // ceiling entirely, so its tier must go to NONE while every OTHER corner and
+  // every PEAK stays byte-identical (the hint is a pricing fact, not physics —
+  // the sweep flies unbreakable audit hardware). Written to fail if the hint
+  // is dropped from sweep.js's tierFor call: the two runs collapse into one.
+  const sweep = (anchors) => auditSweep({ anchors, bed: BED, stormDef: STORM, calmDef: CALM, venturi: [] }).rows[0];
+  const honest = sweep(ANCHORS);
+  const lied = sweep(ANCHORS.map((a) => (a.id === 'a1' ? { ...a, ratingHint: 0.01, sway: a.sway } : a)));
+
+  for (let i = 0; i < honest.tiers.length; i++) {
+    assert(Math.abs(honest.tiers[i].peak - lied.tiers[i].peak) < 1e-9,
+      `corner ${honest.tiers[i].id}: ratingHint moved a PEAK (${honest.tiers[i].peak} -> ${lied.tiers[i].peak}) — ` +
+      'the hint is a failure threshold, it must never touch the flown loads');
+  }
+  const a1 = lied.tiers.find((c) => c.id === 'a1');
+  const a1honest = honest.tiers.find((c) => c.id === 'a1');
+  assert(a1honest.tier, 'fixture drift: a1 must be holdable at hint 1 or this test asserts nothing');
+  assert(!a1.tier,
+    `a1 at hint 0.01 (demand ${(a1.peak / 0.01 / 1000).toFixed(1)} kN vs the 6.5 kN ceiling) still got ` +
+    `hardware ($${a1.tier?.cost}) — sweep.js is pricing bare hw.rating, not rating × ratingHint`);
+  const others = lied.tiers.filter((c) => c.id !== 'a1');
+  assert(others.every((c) => c.tier && c.tier.cost === honest.tiers.find((h) => h.id === c.id).tier.cost),
+    'a hint on a1 repriced a DIFFERENT corner — hints must be per-anchor');
+  assert(lied.unholdable.some((c) => c.id === 'a1'),
+    'an over-ceiling corner must land in unholdable, or the verdict lies');
+});
+
 export const SWEEP_TESTS = TESTS;

web/world/js/rigging.js

@@ -222,6 +222,16 @@ export class RiggingSession {
     return rig.attach(this.picks.map((p) => p.anchorId), this.picks.map((p) => p.hw), this.tension);
   }
 
+  /**
+   * What a pick's corner actually fails at, in newtons: hardware rating × the
+   * anchor's ratingHint (`?? 1` mirrors sail.js — world.js guarantees the field,
+   * but a session can be handed bare test anchors that never met world.js).
+   */
+  _effRating(p) {
+    const a = this.anchors.find((x) => x.id === p.anchorId);
+    return p.hw.rating * (a?.ratingHint ?? 1);
+  }
+
   /** Everything the HUD needs to draw the prep panel, in one read. */
   get summary() {
     return {
@@ -232,8 +242,16 @@ export class RiggingSession {
       fabric: { id: this.fabric.id, name: this.fabric.name, porosity: this.fabric.porosity, cost: this.fabric.cost, blurb: this.fabric.blurb },
       canStart: this.canStart,
       corners: this.picks.map((p) => ({ anchorId: p.anchorId, hw: p.hw.name, rating: p.hw.rating, cost: p.hw.cost })),
+      // The weak link is the lowest EFFECTIVE rating — hw.rating × the anchor's
+      // ratingHint, the same product sail.js fails a corner on (SPRINT12, A's
+      // ruling). D's #7: this used to reduce on hw.rating alone with strict <,
+      // so four identical carabiners flagged whichever was clicked FIRST — the
+      // label pointed at click order, not steel, and on the corner block it
+      // named the genuinely worst anchor only by luck. Ratings ties still keep
+      // the first pick, honestly: if the products are equal the steel really is
+      // interchangeable and there is no "genuinely worst" to point at.
       weakest: this.picks.length
-        ? this.picks.reduce((w, p) => (p.hw.rating < w.hw.rating ? p : w)).anchorId
+        ? this.picks.reduce((w, p) => (this._effRating(p) < this._effRating(w) ? p : w)).anchorId
         : null,
     };
   }

web/world/js/rigging.selftest.js

@@ -211,6 +211,32 @@ test('summary names the weak link for the HUD', () => {
   return `weak link flagged: ${sum.weakest}, $${sum.budget} left`;
 });
 
+test("weak link is rating × ratingHint, not click order (D's #7)", () => {
+  // Corner-block shape: uniform hardware, one anchor made of lies. The old
+  // reduce compared bare hw.rating with strict <, so four identical carabiners
+  // flagged whichever was clicked FIRST — on site_02 it pointed at cb1 only
+  // because D happened to click cb1 first. The label must follow the product
+  // sail.js actually fails on: hw.rating × anchor.ratingHint.
+  const anchors = [
+    { id: 'q1', type: 'post', pos: { x: -3, y: 4, z: -3 }, ratingHint: 1 },
+    { id: 'q2', type: 'post', pos: { x: 3, y: 4, z: -3 }, ratingHint: 1 },
+    { id: 'q3', type: 'post', pos: { x: 3, y: 4, z: 3 }, ratingHint: 1 },
+    { id: 'cb1', type: 'carport', pos: { x: -3, y: 2.3, z: 3 }, ratingHint: 0.22 },
+  ].map((a) => ({ ...a, sway: () => a.pos }));
+  const s = new RiggingSession({ anchors });
+  // click the honest steel FIRST — the pre-fix code flags q1 here, forever
+  for (const id of ['q1', 'q2', 'q3', 'cb1']) assert(s.rig(id).ok, `rig ${id} failed`);
+  assert(s.summary.weakest === 'cb1',
+    `four identical carabiners: the weak link is the 0.22 carport beam, got ${s.summary.weakest}`);
+  // And better hardware on the lying anchor can make it genuinely NOT the weak
+  // link: rated 6500 × 0.22 = 1430 N still beats carabiner 1200 × 1.0 — the
+  // label follows the product, not the price tag and not the hint alone.
+  s.setHardware('cb1', RATED);
+  assert(s.summary.weakest === 'q1',
+    `rated@0.22 (1430 N) out-rates carabiner@1.0 (1200 N) — expected q1, got ${s.summary.weakest}`);
+  return 'weak link tracks rating × hint through hardware changes';
+});
+
 test('reset() returns a used session to a fresh prep phase', () => {
   const s = session();
   for (const id of ['h1', 'h3', 'p1', 'p2']) s.rig(id);

web/world/js/sail.js

@@ -863,12 +863,27 @@ export class SailRig {
     return n ? Math.sqrt(sum / n) / SIM_DT : 0;
   }
 
-  /** Ported from the prototype: 0.4 s sustained over the rating and it lets go. */
+  /**
+   * Ported from the prototype: 0.4 s sustained over the rating and it lets go.
+   *
+   * SPRINT12 — the threshold is the ANCHOR's, not just the hardware's:
+   * `hw.rating * anchor.ratingHint`. A's ruling (THREADS sprint 11, "THE
+   * RATINGS ARE REAL. WIRE THEM."): DESIGN's fascia/carport lie is an ANCHOR
+   * failing, and before this line every anchor was exactly as strong as the
+   * carabiner you hung off it — E's baked 0.22/0.30/0.35 were read by nothing,
+   * and the lever that decided whether the trap fired was tension, not steel.
+   * Read LIVE from c.anchor each check (not captured at attach): dress() adopts
+   * GLB hints by MUTATING the anchor objects in place, and a prep-time rig must
+   * see the dressed number, not whatever was there when attach() ran.
+   * The `?? 1` is belt-and-braces — world.js guarantees a finite hint on every
+   * anchor (DEFAULT_RATING_HINT, a.test pins it), because `load > rating *
+   * undefined` is `load > NaN`: always false, i.e. an UNBREAKABLE anchor.
+   */
   _checkFailure(dt) {
     for (let k = 0; k < 4; k++) {
       const c = this.corners[k];
       if (c.broken) continue;
-      if (c.load > c.hw.rating) c.overload += dt;
+      if (c.load > c.hw.rating * (c.anchor.ratingHint ?? 1)) c.overload += dt;
       else c.overload = Math.max(0, c.overload - dt * OVERLOAD_RECOVER);
       if (c.overload > OVERLOAD_SECS) {
         c.broken = true;

web/world/js/sail.selftest.js

@@ -901,6 +901,119 @@ test('ponding: rain that the router swallows cannot silently pass', () => {
   return 'no rain API -> no pond (and Lane A asserts the router keeps it)';
 });
 
+// --- SPRINT12: THE RATINGS ARE REAL (A's ruling, THREADS sprint 11) ---------
+// sail.js fails a corner on load > hw.rating * anchor.ratingHint. This test
+// asserts the CONSEQUENCE, not the formula: on the corner block, at max
+// tension, through the funnel, the carport blows before an honest post — the
+// yard's whole thesis, which D measured to be UNENFORCED before the wiring
+// (at any tension the sim had no reason to prefer cb over q; the lever that
+// decided the trap was tension, not steel).
+
+const STORM_03B = await loadStormDef('storm_03b_earlybuster');
+
+/**
+ * site_02_corner_block, DRESSED — dumped live from world.anchors after dress()
+ * (browser, SPRINT12), same provenance as tools/site_audit's backyard dump.
+ * Node cannot dress (GLTFLoader + fetch), and the graybox positions are a
+ * different yard — see audit.mjs's header for the whole sermon. ratingHint is
+ * E's baked number, adopted by adoptAnchor; q1..q4 are site-JSON posts at
+ * world.js's DEFAULT_RATING_HINT = 1.
+ */
+const SITE2_DRESSED = [
+  ['tr1', 'tree', 6.833, 2.992, 0.154, 1.0], ['tr1b', 'tree', 7.142, 3.764, 0.043, 0.88],
+  ['q1', 'post', -3.953, 3.937, -2.824, 1.0], ['q2', 'post', 3.983, 4.001, -2.276, 1.0],
+  ['q3', 'post', 2.249, 3.991, 4.498, 1.0], ['q4', 'post', -3.334, 4.022, 4.445, 1.0],
+  ['cb1', 'carport', -8.41, 2.289, -3, 0.22], ['cb2', 'carport', -5.59, 2.289, -3, 0.22],
+  ['cp1', 'carport_post', -8.41, 1.679, -0.39, 0.3], ['cp2', 'carport_post', -8.41, 1.679, -5.61, 0.3],
+].map(([id, type, x, y, z, ratingHint]) => {
+  const pos = { x, y, z };
+  return { id, type, ratingHint, pos, sway: () => pos };
+});
+
+/** site_02's funnel, verbatim from the site JSON — the yard's personality. */
+const SITE2_VENTURI = [{ x: -6, z: 0, axis: 2.1, gain: 1.5, radius: 5, sharp: 3 }];
+
+/** realWind() with the SITE's venturi on it, the way main.js sets it at load. */
+function site2Wind(def) {
+  const field = createWindField(def);
+  field.setVenturi(SITE2_VENTURI);
+  const out = { x: 0, y: 0, z: 0 };
+  return {
+    sample(pos, t) { return field.vecAt(pos.x, pos.z, t, out); },
+    speedAt(t) { field.vecAt(-6, 0, t, out); return Math.hypot(out.x, out.z); },
+    gustTelegraph: () => null,
+    rainAt: (t) => field.rainAt(t),
+    rainMmPerHour: (t) => field.rainMmPerHour(t),
+  };
+}
+
+/**
+ * D's exact carport line (cb1 cb2 q2 q3) on UNIFORM rated shackles, settled 12 s
+ * on the calm day (funnel on — the gap doesn't switch off for prep, same as the
+ * audit), then flown through the whole early buster. Uniform hardware ON
+ * PURPOSE: the only asymmetry left is the anchors themselves, so if a cb corner
+ * goes first it can only be ratingHint. Returns breaks with the rig's OWN clock
+ * on them — settle is t 0..12, the storm is t 12..102.
+ */
+const flyCarportLine = (anchors, tension) => {
+  const r = new SailRig({ anchors, gridN: 10, porosity: 0.30 });
+  r.watchDivergence = true;
+  r.attach(['cb1', 'cb2', 'q2', 'q3'], Array(4).fill(HARDWARE[2]), tension);
+  const breaks = [];
+  r.events.on('break', (e) => breaks.push({ id: e.anchorId, t: e.t }));
+  const calm = site2Wind(STORM_01), storm = site2Wind(STORM_03B);
+  for (let i = 0, n = Math.round(12 / SIM_DT); i < n; i++) r.step(SIM_DT, calm, (i * SIM_DT) % 3);
+  const SETTLE_END = r.t;
+  for (let i = 0; i < Math.round(STORM_03B.duration / SIM_DT); i++) r.step(SIM_DT, storm, i * SIM_DT);
+  return { breaks, SETTLE_END };
+};
+
+test('ruling: on site_02 the CARPORT blows before an honest post — at DEFAULT tension', () => {
+  // The half D's cold pass proved missing: pre-wiring, at tension 1.0 the
+  // honest post blew first and the carport cost nothing, so the lever that
+  // decided the trap was tension. Now the same rig, default tension, survives
+  // prep and loses the CARPORT mid-storm while both honest posts hold — the
+  // anchor decides, not the dial. (Measured: cb1 lets go around t≈41 with
+  // q2/q3 peaking ~1.8/2.5 kN, well under a bare 6.5 kN rated shackle.)
+  const { breaks, SETTLE_END } = flyCarportLine(SITE2_DRESSED, 1.0);
+  assert(breaks.length > 0,
+    'nothing blew at default tension: ratingHint is not reaching _checkFailure — the trap is still tension-gated');
+  const firstCb = breaks.findIndex((b) => b.id.startsWith('cb'));
+  const firstQ = breaks.findIndex((b) => b.id.startsWith('q'));
+  assert(firstCb >= 0, `the carport never blew (breaks: ${breaks.map((b) => b.id).join(',')})`);
+  assert(firstQ === -1 || firstCb < firstQ,
+    `an honest post (${breaks[firstQ]?.id}) blew before the carport — the trap is pointing the wrong way`);
+  assert(breaks[firstCb].t > SETTLE_END,
+    `the beam let go at t=${breaks[firstCb].t.toFixed(1)}s, INSIDE the ${SETTLE_END.toFixed(0)}s prep settle — ` +
+    'at default tension the trap should fire in the storm, not on the shop floor');
+  return `default tension: ${breaks[firstCb].id} blew at t=${(breaks[firstCb].t - SETTLE_END).toFixed(1)}s into the storm, honest posts held`;
+});
+
+test('ruling: at MAX tension the carport still goes first — and the hint is doing it', () => {
+  // The sprint's literal shape (max tension through the funnel), plus the
+  // control that makes both tests mean "the HINT", not "the load".
+  const { breaks } = flyCarportLine(SITE2_DRESSED, 1.4); // TENSION_MAX
+  const firstCb = breaks.findIndex((b) => b.id.startsWith('cb'));
+  const firstQ = breaks.findIndex((b) => b.id.startsWith('q'));
+  assert(firstCb >= 0, `max tension and the carport still never blew (breaks: ${breaks.map((b) => b.id).join(',')})`);
+  assert(firstQ === -1 || firstCb < firstQ,
+    `an honest post (${breaks[firstQ]?.id}) blew before the carport at max tension`);
+
+  // Identical yard, every hint forced to 1 — bare hardware ratings, the
+  // pre-wiring game — must survive the same night intact: rated shackles at
+  // 6.5 kN hold these loads (worst peak ~3.4 kN); only 6.5 × 0.22 = 1.43 kN
+  // lets go. This is the mutation control IN the suite: unwire sail.js and
+  // both tests above go red because the wired and unhinted runs collapse into
+  // this one. If THIS half ever breaks, the loads moved and the cb-first
+  // asserts stop isolating the wiring — re-measure before touching thresholds.
+  const unhinted = flyCarportLine(
+    SITE2_DRESSED.map((a) => ({ ...a, ratingHint: 1, sway: a.sway })), 1.4).breaks;
+  assert(unhinted.length === 0,
+    `hint-free control lost ${unhinted.map((b) => b.id).join(',')} — bare rated shackles no longer hold this line; ` +
+    'the cb-first asserts are no longer attributing the break to ratingHint');
+  return `max tension: ${breaks[firstCb].id} first at t=${breaks[firstCb].t.toFixed(1)}s; hint-free control held 4/4`;
+});
+
 export const SAIL_TESTS = TESTS;
 
 export function runSailSelftest() {