update：优化节奏训练计数

src/pages/training/practise-one.vue

@@ -501,14 +501,15 @@ const trainingCopy = computed(() => {
     const targetArrows =
       getPositiveInteger(practiceInfo.value.targetArrows) ||
       getPositiveInteger(trainingParams.value.totalReq) || totalArrows;
-    const completedArrows = rhythmCompletedRounds.value;
+    // 展示当前节奏序号，从 1 开始；内部仍累计已完成次数。
+    const currentRound = Math.min(totalArrows, rhythmCompletedRounds.value + 1);
     const hitReq = rhythmHitReq.value;
     const qualifiedArrows = scores.value.filter((arrow) => arrow?.ok === true).length;
 
     return {
       inline: true,
       details: [
-        { text: `(${completedArrows}/${totalArrows})`, highlight: true },
+        { text: `(${currentRound}/${totalArrows})`, highlight: true },
         { text: " 个节奏内，跟随节奏射箭，命中 " },
         { text: `(${qualifiedArrows}/${targetArrows})`, highlight: true },
         { text: " 箭" },