Give the menus a theme

background-music.wav loops under the title screen and the court picker, ducks
out when a court is picked, and fades back in at the death summary — the end
screen is a menu too, so the zombie bed ducks out as this one comes in.

It starts at BOOT, not on the first tap, so the title screen already has music.
That needed loopBed to call audio() before its already-started early return: the
theme plays into a context the autoplay policy holds suspended, and the call
that wakes it is a second menuMusic() from the first tap, which used to return
at the beds.has guard without reaching AC.resume().

fadeBed also now records a duck for a bed that is still loading, and loopBed
starts that bed silent. An 8 MB file ducked mid-fetch would otherwise come up at
full level, seconds later, over the match. Same latent bug applied to zombieDuck.

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

gameplay.js

@@ -1,8 +1,8 @@
 // Game logic: ballistics, swings, serves, rules/scoring, AI, and the per-frame update.
 
-import { TUNE, UI, BOSS_ART, APPLAUSE_T, EATEN_BURST, COURT, CONTACT, VOLLEY, ZONE_DEPTH, HOME, P_BOUNDS, TOSS, SHOT_DEPTH, POSE_TIME, BOUNCE_IDLE } from './config.js';
+import { TUNE, UI, BOSS_ART, APPLAUSE_T, EATEN_BURST, EATEN_SUMMARY, COURT, CONTACT, VOLLEY, ZONE_DEPTH, HOME, P_BOUNDS, TOSS, SHOT_DEPTH, POSE_TIME, BOUNCE_IDLE } from './config.js';
 import { P, O, ball, score, crowd, G, other, deuceSide, setupPoint, sendBoy } from './state.js';
-import { audio, pock, swish, whoosh, applause, voice, sfx, aww, zombieMusic, zombieDuck } from './audio.js';
+import { audio, pock, swish, whoosh, applause, voice, sfx, aww, zombieMusic, zombieDuck, menuDuck } from './audio.js';
 import { axisX, axisZ, takeFlickAim, touchPX } from './input.js';
 import { W } from './render.js'; // runtime-only cycle (render imports gameplay), same pattern as input/zombies
 import { updateZombies, spawnZombie, spawnRacketZombie, spawnMachine, spawnChapterBoss, zombies, gore, explode, meleeSwipe, extras, parts, pellets, shots, playerGore, eatenBleed } from './zombies.js';
@@ -920,6 +920,9 @@ export function update(dt) {
     const was = G.eatenT; G.eatenT += dt;
     if (G.eatenT < EATEN_BURST) eatenBleed(dt);                     // phase A: they are still tearing at you
     if (was < EATEN_BURST && G.eatenT >= EATEN_BURST) playerGore(); // phase B: you become the gore
+    // phase C: the summary IS the end menu — hand the soundtrack back to the menu theme. Not at
+    // killPlayer: the death itself already has the massacre call and the crowd's groan over it.
+    if (was < EATEN_SUMMARY && G.eatenT >= EATEN_SUMMARY) { zombieDuck(true); menuDuck(false); }
     if (G.shake && (G.shake.t -= dt) <= 0) G.shake = null;
     if (G.boomFlash > 0) G.boomFlash -= dt;
     updateZombies(dt);