fix: descend undo notes and smooth next-level transitions

wechat-campaign-200-r2/smoke.mjs

@@ -26,7 +26,7 @@ function boot(storage = new Map(), width = 375, height = 812) {
         wx['on' + name] = cb => handlers[name] = cb;
     const global = {};
     vm.runInNewContext(fs.readFileSync(path.join(root, 'game.js'), 'utf8'), {Date:Clock, wx, GameGlobal: global, requestAnimationFrame: cb => { frames.set(++frameId, cb); return frameId; }, cancelAnimationFrame: id => frames.delete(id), setTimeout: () => 1, clearTimeout: () => { } }, { timeout: 10000 });
-    const tick = () => { const entry=frames.entries().next().value;if(!entry)return;const [id,fn]=entry; frames.delete(id);text.length=0;images.length=0; fn(); };
+    const tick = () => { const callbacks=[...frames.values()];frames.clear();text.length=0;images.length=0;for(const fn of callbacks)fn(); };
     tick();
     const touch = (kind, x, y) => handlers[kind]({ changedTouches: [{ identifier: 1, clientX: x, clientY: y }], touches: [{ identifier: 1, clientX: x, clientY: y }] });
     const tap = (x, y) => { touch('TouchStart', x, y); touch('TouchEnd', x, y); tick(); };