Credibility pass: the accretion sanded smooth

Blind reviews over d2b40ec..HEAD (engine / web / server+deploy). Orphaned
doc comments rejoined their functions; the swap-meet tradables collapsed
from four pasted deriveds to one (killing the "the's treasure" label);
FEAR's aura and banner now share the engine's own dreadDistance; the
long-press peek got one home; rulebook.ts stopped wearing JSON quotes;
process-named tests and war-story comments now state the constraints they
pin; the protocol doc caught up to its handlers; verify-ledgers.sh can
actually count failures; the runbook learned about the determinism gate
and the nightly backups. No behavior changes — 255 tests and all 48
production ledgers replay identically.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/web/src/FirewallEdge.svelte

@@ -2,21 +2,14 @@
   // A standing WALL OF FIRE: board furniture, not a flourish — it burns for
   // as long as the spell holds, so the animation is pure CSS on a handful
   // of shapes (no turbulence filters; those are budgeted for one-shot fx).
+  import { holdToPeek } from "./peek";
   let { x, y, kind, onpeek }: {
     x: number; y: number; kind: "V" | "H";
     /** Press-and-hold (touch has no hover): report what this fire is. */
     onpeek?: (tip: string) => void;
   } = $props();
   const TIP = "a wall of fire — passing through burns for 4";
-  let peekTimer: ReturnType<typeof setTimeout> | null = null;
-  function press() {
-    if (!onpeek) return;
-    peekTimer = setTimeout(() => onpeek?.(TIP), 450);
-  }
-  function release() {
-    if (peekTimer) clearTimeout(peekTimer);
-    peekTimer = null;
-  }
+  const { press, release } = holdToPeek(() => onpeek?.(TIP));
   const uid = $props.id();
   const CELL = 48;
   const WALL = 7;
@@ -40,7 +33,7 @@
 </script>
 
 <g transform={`translate(${cx} ${cy})`} class="fw">
-  <title>a wall of fire — passing through burns for 4</title>
+  <title>{TIP}</title>
   <defs>
     <linearGradient id={`fw-bar-${uid}`} x1="0" y1="1" x2="0" y2="0">
       <stop offset="0" stop-color="#7c1a14" />