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/peek.ts

@@ -0,0 +1,18 @@
+// Press-and-hold to peek, mirroring the board's cell gesture. Touch has no
+// hover, so every board fixture answers a 450ms hold with its tooltip.
+
+const HOLD_MS = 450;
+
+/** Wire the result's press/release to onpointerdown/-up/-leave. */
+export function holdToPeek(fire: () => void) {
+  let timer: ReturnType<typeof setTimeout> | null = null;
+  return {
+    press() {
+      timer = setTimeout(fire, HOLD_MS);
+    },
+    release() {
+      if (timer) clearTimeout(timer);
+      timer = null;
+    },
+  };
+}