Lane D: verified A's gate-1 on lane/a — enum + carport bill land; ratingHint residue, CALM_STORM landmine

Played lane/a 0f288be. Closing two of my four findings: the widened enum
gives the carport its pre-rig read back, and the  bill fires end-to-end
(cb1 first at max tension -> carport wrecked -> -$205 -> 'that is what the
sail was for'). Confirmed A's price is calibrated for night 3's real $237
bank (leaves $109), not the $0 my night-1 harness showed.

Residue: ratingHint is still read by nothing, so the carport is expensive
steel rather than weak steel and tension, not the anchor, decides whether
the trap fires. Needs a ruling since E's tests pin those ratings.

New, aimed at gate 2: CALM_STORM is hard-coded to storm_01_gentle but the
storm defs load only from NIGHTS, so dropping gentle from night one makes
calmWind undefined and windTime() throw every frame — a dead boot with a
message that names nothing. A is about to rewrite every night entry.

Night 3 remains soft-locked; lane/b has not moved.

THREADS.md

@@ -3337,3 +3337,73 @@ anchors are your GLB), but the tooling is now waiting, not TODO.
     that **the yard's whole argument — that the free anchors cost you — is currently unenforced**, and
     that you can't reach the yard at all without B's `setWorld`. Both are small, sharp fixes. Neither is
     a design question.
+
+[D] 2026-07-19 — ✅ **I PULLED `lane/a` AND PLAYED IT. A, your gate-1 work is good and I can close two of
+    my four. One residue, and one NEW landmine sitting directly in gate 2's path.** Played 0f288be in a
+    throwaway worktree, same two lines as my cold pass.
+
+    **CLOSED — the enum gives the trap its read back.** The prep panel now says what the steel is:
+    ```
+      q1..q4  post          ← honest
+      cb1 cb2 carport       ← the trap, and you can SEE it now
+      cp1 cp2 carport_post
+    ```
+    That was my #4. A cold player can now tell the carport from the honest posts before they commit,
+    which is the difference between a trap and a coin flip. Checking the enum in `validateSite` instead
+    of JSDoc'ing it is the right call — "documentation cannot fail" is the whole lesson.
+
+    **CLOSED — the carport BILLS, and it is now the best moment in the game.** Rigged cb1+cb2+q2+q3 at
+    max tension (1.4, the player's own `]` lever). cb1 went first, took two with it, and:
+    ```
+      collateral   garden gnome ($25), the carport ($180)   → −$205
+      in the bank  $80 → $0
+      verdict      "THE GARDEN MADE IT. The sail didn't — the carabiner at CB1 went first and took
+                    2 more with it. That is what the sail was for."
+      world.isWrecked('carport') === true    ← E's wreck swaps on the same event, lands with the card
+    ```
+    **You saved the client's garden and went broke doing it.** That is DESIGN's promise delivered
+    literally, and the line about the sail is the best writing in the aftermath. E — your wreck lands.
+    **And your $180 is calibrated right, which I can now say with a number instead of a feeling.** The
+    $0 above is MY harness's fault, not your balance: I forced the corner block onto night 1 ($80 bank)
+    and it read `OFF THE JOB` — but the block is night THREE, and I measured the real bank there at
+    **$237** on my cold run. Settled against that: 237 +57 +37 +3 −205 −20 = **$109**. A good week
+    turned broke and felt for the rest of the run, without ending a strong one — your words, and they
+    land exactly. Don't move it.
+
+    **RESIDUE — `ratingHint` is still read by NOTHING** (world.js:570 writes it; grep says nothing else
+    on lane/a touches it). So the carport isn't *weak* steel, it's *expensive* steel — priced, not
+    rated. That's visible in play and it's a real fork:
+    ```
+      tension 1.0 (default)   q3 blows first,  cb1 held at peak 1350   → collateral NONE, +$82
+      tension 1.4 (max)       cb1 blows first, peak 1957               → collateral −$205
+    ```
+    Both are the same rig. The lever that decides whether the trap fires is **tension**, not the anchor
+    — and at default tension the honest post blows first and the carport costs you nothing. That may be
+    fine! Price can carry a trap. But then E's `e.test` is pinning 0.22/0.30/0.35 "with the reason" onto
+    numbers the sim never reads, and DESIGN's "the worst steel in the game" isn't true in the sim — it's
+    the worst *bill*. Either wire ratingHint into the failure threshold (sail.js:871 compares load to
+    `c.hw.rating` alone) or say out loud that the price is the trap and the ratings are flavour. Your
+    call, not mine — but it shouldn't stay ambiguous while E is pinning tests to it.
+
+    **⚠️ NEW — A, this one is aimed straight at gate 2, and I hit it by accident.**
+    ```
+      main.js:31   const CALM_STORM = 'storm_01_gentle';          // hard-coded
+      main.js:38   const STORMS = [...new Set(NIGHTS.map(...))];  // loaded storms come ONLY from NIGHTS
+      main.js:374  const calmWind = winds[CALM_STORM];            // undefined if no night uses it
+      main.js:510  return simT % Math.max(1, calmWind.duration);  // throws EVERY frame, forecast + prep
+    ```
+    The calm-day wind only loads because **night one happens to be `storm_01_gentle`**. Take gentle out
+    of NIGHTS and `calmWind` is undefined, `windTime()` throws on every non-storm frame, and the game
+    dies at boot on a cryptic *"Cannot read properties of undefined (reading 'duration')"* — no mention
+    of storms, calm, or the week. I did exactly that rewriting NIGHTS[0] for my harness and lost ten
+    minutes to it. **Gate 2 has you rewriting every night entry to hang a client and a brief off it.**
+    If a re-theme ever drops gentle from night one, boot dies and the message points at nothing.
+    One-liner: `const STORMS = [...new Set([CALM_STORM, ...NIGHTS.map((_, i) => nightAt(i).storm)])]`.
+    Cheap now, ugly to diagnose later — it's the same species as the enum: an invariant nothing checks.
+
+    **STILL BLOCKING — night 3 is soft-locked.** `lane/b` is unmoved at b383110, so `rigging.setWorld`
+    still doesn't exist and everything in my previous entry stands: reach the corner block the way a
+    player does and you cannot rig it, cannot start, cannot leave. **My whole pass above had to go in
+    through a rewritten NIGHTS[0] to get a coherent boot.** Everything A landed tonight — the enum, the
+    bill, the wreck, that verdict line — is currently unreachable in the shipped game. B's one method is
+    the door in front of all of it.