round3: G1 gd_answer提前一小节(根因=排程压窗起点) + G2教学降难DDA + G3 count-in修复(根因=未重排调度队列) + G4 escape目标链 + G5 simon双击根治(重听改上滑,重录3句) + G6轮成功/破纪录 + G7 space方向呼喊 + 22语音文件 + guide93断言全绿

web/harness/mock.mjs

@@ -135,9 +135,12 @@ export function installMock(gameDir) {
       };
     }
     createScriptProcessor() { return { connect() {}, disconnect() {}, onaudioprocess: null }; }
-    decodeAudioData() {
+    decodeAudioData(ab) {
+      // 时长按这块 buffer 自己的 url 估算（round3 修复：原来读 lastFetched——
+      // prewarm 与 play 并发 fetch 时 voice 会随机继承 bgm 的 90s 时长，语音
+      // 结束定时器形同虚设、链全靠兜底看门狗推进，tap 也会被"仍在播"的语音吃掉）
       return Promise.resolve({
-        duration: estimateDuration(gameName, lastFetched),
+        duration: estimateDuration(gameName, ab && ab.__url),
         numberOfChannels: 1, sampleRate: 44100,
         getChannelData: () => new Float32Array(16),
       });
@@ -167,9 +170,11 @@ export function installMock(gameDir) {
     }
     const data = fs.readFileSync(p);
     fetchedLog.push({ url: s, ok: true });
+    const ab = data.buffer.slice(data.byteOffset, data.byteOffset + data.byteLength);
+    ab.__url = s; // 供 decodeAudioData 按自身 url 估时长（见上）
     return {
       ok: true, status: 200,
-      arrayBuffer: async () => data.buffer.slice(data.byteOffset, data.byteOffset + data.byteLength),
+      arrayBuffer: async () => ab,
     };
   };